Outputs (92)

Hydrogen production from plastic waste: A comprehensive simulation and machine learning study (2024)
Journal Article
Lahafdoozian, M., Khoshkroudmansouri, H., Zein, S. H., & Jalil, A. (2024). Hydrogen production from plastic waste: A comprehensive simulation and machine learning study. International Journal of Hydrogen Energy, 59, 465-479. https://doi.org/10.1016/j.ijhydene.2024.01.326

Gasification, a highly efficient method, is under extensive investigation due to its potential to convert biomass and plastic waste into eco-friendly energy sources and valuable fuels. Nevertheless, there exists a gap in comprehension regarding the i... Read More about Hydrogen production from plastic waste: A comprehensive simulation and machine learning study.

Techno-economic analysis of production of octane booster components derived from lignin (2024)
Journal Article
Ng, Z. W., Yeoh, K. Y., Hafyan, R. H., Putranto, A., Horri, B. A., Zein, S. H., …Butar, I. (in press). Techno-economic analysis of production of octane booster components derived from lignin. Biomass Conversion and Biorefinery, https://doi.org/10.1007/s13399-023-05255-w

In this study, a comprehensive process for production of an environmentally friendly octane booster (acetophenone) from lignin is presented, along with a detailed techno-economic analysis. Recognizing that much of the prior research on octane booster... Read More about Techno-economic analysis of production of octane booster components derived from lignin.

Advances in MXene-based photoanodes for water-splitting (2023)
Journal Article
Bahari, M. B., Mamat, C. R., Jalil, A. A., Hassan, N. S., Khusnun, N. F., Sawal, M. H., …Le, V. G. (2023). Advances in MXene-based photoanodes for water-splitting. Journal of Electroanalytical Chemistry, 947, Article 117750. https://doi.org/10.1016/j.jelechem.2023.117750

MXene, composed of two-dimensional transition metal carbides/nitrides, has excellent potential as photoanode material for photoelectrochemical water-splitting applications. Its exceptional physical and chemical properties, including high electrical c... Read More about Advances in MXene-based photoanodes for water-splitting.

Lamellar-structured fibrous silica as a new engineered catalyst for enhancing CO<inf>2</inf> methanation (2023)
Journal Article
Aziz, M. A., Jalil, A. A., Hamid, M. Y., Hassan, N. S., Khusnun, N. F., Bahari, M. B., …Saravanan, R. (2023). Lamellar-structured fibrous silica as a new engineered catalyst for enhancing CO2 methanation. Fuel, 352, Article 129113. https://doi.org/10.1016/j.fuel.2023.129113

Recently, Centre of Hydrogen Energy (CHE) has developed new structures of fibrous mesoporous silica nanoparticles (FMSN) and fibrous Mobil composition of matter-41 (FMCM-41) called CHE-SM and CHE-S41, respectively. Both are used as a support, along w... Read More about Lamellar-structured fibrous silica as a new engineered catalyst for enhancing CO<inf>2</inf> methanation.

Comparison of activated carbon and low-cost adsorbents for removal of 2,4-dichlorophenol from wastewater using Aspen Adsorption and response surface methodology (2023)
Journal Article
Yasir, H. A., Zein, S. H., Holliday, M. C., Jabbar, K. J., Ahmed, U., & Jalil, A. A. (2023). Comparison of activated carbon and low-cost adsorbents for removal of 2,4-dichlorophenol from wastewater using Aspen Adsorption and response surface methodology. Environmental Technology, https://doi.org/10.1080/09593330.2023.2202829

In this paper, the adsorption of the chlorinated organic compound, 2,4-dichlorophenol, using activated carbon (AC), bagasse fly ash (BFA) and rice husk fly ash (RHFA) in a packed bed column was simulated using Aspen Adsorption software. The purpose o... Read More about Comparison of activated carbon and low-cost adsorbents for removal of 2,4-dichlorophenol from wastewater using Aspen Adsorption and response surface methodology.

A short review on informetric analysis and recent progress on contribution of ceria in Ni-based catalysts for enhanced catalytic CO methanation (2023)
Journal Article
Hatta, A., Jalil, A., Hassan, N., Hamid, M., Nabgan, W., Alhassan, M., …Firmansyah, M. (2023). A short review on informetric analysis and recent progress on contribution of ceria in Ni-based catalysts for enhanced catalytic CO methanation. Powder Technology, 417, Article 118246. https://doi.org/10.1016/j.powtec.2023.118246

Energy demand is rising, and the exhaustion of accessible energy sources is currently the greatest challenge. CO methanation has become a crucial reaction for the substituted natural gas production, necessitating a catalyst. Ceria is amongst the most... Read More about A short review on informetric analysis and recent progress on contribution of ceria in Ni-based catalysts for enhanced catalytic CO methanation.

Process design, simulation, and techno-economic analysis of integrated production of furfural and glucose derived from palm oil empty fruit bunches (2023)
Journal Article
Mohammed, M. Z. R., Ng, Z. W., Putranto, A., Kong, Z. Y., Sunarso, J., Aziz, M., …Butar, I. (2023). Process design, simulation, and techno-economic analysis of integrated production of furfural and glucose derived from palm oil empty fruit bunches. Clean Technologies and Environmental Policy, https://doi.org/10.1007/s10098-022-02454-3

This study aims to propose a new process design, simulation, and techno-economic analysis of an integrated process plant that produces glucose and furfural from palm oil empty fruit bunches (EFB). In this work, an Aspen Plus-based simulation has been... Read More about Process design, simulation, and techno-economic analysis of integrated production of furfural and glucose derived from palm oil empty fruit bunches.

Process design Optimisation, heat integration, and techno-economic analysis of oil refinery: A case study (2023)
Journal Article
Jabbar, K. J., Zein, S. H., Hasan, A. H., Ahmed, U., & Jalil, A. A. (2023). Process design Optimisation, heat integration, and techno-economic analysis of oil refinery: A case study. Energy Sources, Part A, 45(2), 4931-4947. https://doi.org/10.1080/15567036.2023.2205365

This paper outlines a comprehensive analysis of the optimal design and simulation of a crude oil distillation system within a refinery process, including pre-treatment and blending of two crude oils to increase the refinery’s annual profit. This dist... Read More about Process design Optimisation, heat integration, and techno-economic analysis of oil refinery: A case study.

Process design and techno-economic analysis of dual hydrogen and methanol production from plastics using energy integrated system (2022)
Journal Article
Al-Qadri, A. A., Ahmed, U., Jameel, A. G. A., Ahmad, N., Zahid, U., Zein, S. H., & Naqvi, S. R. (in press). Process design and techno-economic analysis of dual hydrogen and methanol production from plastics using energy integrated system. International Journal of Hydrogen Energy, https://doi.org/10.1016/j.ijhydene.2022.11.266

This study has been dedicated towards the conversion of plastics to methanol and hydrogen. The base design (case 1) represents the conventional design for producing syngas via steam gasification of waste plastics followed by CO2 and H₂S removal. The... Read More about Process design and techno-economic analysis of dual hydrogen and methanol production from plastics using energy integrated system.

Modelling and Simulation of Dissolution/Reprecipitation Technique for Low-Density Polyethene Using Solvent/Non-Solvent System (2022)
Journal Article
Zein, S. H., Hussain, A. A., Yansaneh, O. Y., & Jalil, A. A. (2022). Modelling and Simulation of Dissolution/Reprecipitation Technique for Low-Density Polyethene Using Solvent/Non-Solvent System. Processes, 10(11), Article 2387. https://doi.org/10.3390/pr10112387

The global production and consumption of plastics have continued to increase. Plastics degrade slowly, causing persistent environmental pollution Developed waste plastic recycling methods are discussed in this report, with a focus on the dissolution/... Read More about Modelling and Simulation of Dissolution/Reprecipitation Technique for Low-Density Polyethene Using Solvent/Non-Solvent System.

Process design and life cycle assessment of furfural and glucose co-production derived from palm oil empty fruit bunches (2022)
Journal Article
Ng, Z. W., Gan, H. X., Putranto, A., Akbar Rhamdhani, M., Zein, S. H., George, O. A., …Butar, I. (2022). Process design and life cycle assessment of furfural and glucose co-production derived from palm oil empty fruit bunches. Environment, Development and Sustainability, https://doi.org/10.1007/s10668-022-02633-8

In light of environmental issues, lignocellulosic empty fruit bunch (EFB) biomass is promoted as a carbon–neutral, environmentally friendly, and renewable alternative feedstock. A comprehensive environmental assessment of EFB biorefineries is critica... Read More about Process design and life cycle assessment of furfural and glucose co-production derived from palm oil empty fruit bunches.

Contemporary Perspectives on Waste Plastic Catalysis (2022)
Book Chapter
Yansaneh, O. Y., & Zein, S. H. Contemporary Perspectives on Waste Plastic Catalysis. In R. Pullabhotla (Ed.), Prime Archives in Chemistry. (2nd ed.). Hyderabad: Vide Leaf. https://doi.org/10.37247/pachem2ed.2.22.25

Microwave-Assisted Hydrothermal Carbonisation of Waste Biomass: The Effect of Process Conditions on Hydrochar Properties (2022)
Journal Article
Holliday, M. C., Parsons, D. R., & Zein, S. H. (2022). Microwave-Assisted Hydrothermal Carbonisation of Waste Biomass: The Effect of Process Conditions on Hydrochar Properties. Processes, 10(9), Article 1756. https://doi.org/10.3390/pr10091756

Hydrochars are an alternative form of biochar produced by hydrothermal carbonisation (HTC), a potentially cheaper and greener method. In this paper, the effect of multiple variables on hydrochar properties was investigated. Waste biomass was converte... Read More about Microwave-Assisted Hydrothermal Carbonisation of Waste Biomass: The Effect of Process Conditions on Hydrochar Properties.

Techno-Economic Analysis and Feasibility of Industrial-Scale Activated Carbon Production from Agricultural Pea Waste Using Microwave-Assisted Pyrolysis: A Circular Economy Approach (2022)
Journal Article
Zein, S. H., & Antony, A. (2022). Techno-Economic Analysis and Feasibility of Industrial-Scale Activated Carbon Production from Agricultural Pea Waste Using Microwave-Assisted Pyrolysis: A Circular Economy Approach. Processes, 10(9), Article 1702. https://doi.org/10.3390/pr10091702

This paper examines a novel approach to activated carbon (AC) production that uses pea waste (PW) and to what extent it is economically competitive with current production methods. Additionally, the outcome is to provide a detailed economic analysis... Read More about Techno-Economic Analysis and Feasibility of Industrial-Scale Activated Carbon Production from Agricultural Pea Waste Using Microwave-Assisted Pyrolysis: A Circular Economy Approach.

Waste Plastic Thermal Pyrolysis: A Recent Advanced Study (2022)
Book Chapter
Yansaneh, O. Y., & Zein, S. H. (2022). Waste Plastic Thermal Pyrolysis: A Recent Advanced Study. In G. Bucci (Ed.), Current Overview on Science and Technology Research Vol. 1 (1-36). Hooghly, West Bengal: Book Publisher International. https://doi.org/10.9734/bpi/costr/v1/2637b

This work is essentially a simplification of a collection of thermal pyrolysis research work, mostly recent, being reviewed and referenced here, and showcasing the increased interest in pyrolysis treatment methods. The management of waste plastic (WP... Read More about Waste Plastic Thermal Pyrolysis: A Recent Advanced Study.

Pyrolysis of High-Density Polyethylene Waste Plastic to Liquid Fuels—Modelling and Economic Analysis (2022)
Journal Article
Zein, S. H., Grogan, C. T., Yansaneh, O. Y., & Putranto, A. (2022). Pyrolysis of High-Density Polyethylene Waste Plastic to Liquid Fuels—Modelling and Economic Analysis. Processes, 10(8), Article 1503. https://doi.org/10.3390/pr10081503

Recycling of waste plastics has become vital due to the threat to the environment the huge piles of those wastes represent, with research revealing High-Density Polyethylene (HDPEs) as the most dominant waste plastics. Because of their dominance and... Read More about Pyrolysis of High-Density Polyethylene Waste Plastic to Liquid Fuels—Modelling and Economic Analysis.

Agricultural Pea Waste as a Low-Cost Pollutant Biosorbent for Methylene Blue Removal: Adsorption Kinetics, Isotherm And Thermodynamic Studies (2022)
Journal Article
Holliday, M. C., Parsons, D. R., & Zein, S. H. (2022). Agricultural Pea Waste as a Low-Cost Pollutant Biosorbent for Methylene Blue Removal: Adsorption Kinetics, Isotherm And Thermodynamic Studies. Biomass Conversion and Biorefinery, https://doi.org/10.1007/s13399-022-02865-8

Biosorbents are an alternative pollutant adsorbent, usually sourced from waste biomass and requiring little to no treatment. This makes them cheaper than conventional adsorbents. In this paper, green pea (Pisum sativum) haulm was used as a biosorbent... Read More about Agricultural Pea Waste as a Low-Cost Pollutant Biosorbent for Methylene Blue Removal: Adsorption Kinetics, Isotherm And Thermodynamic Studies.

Industrial-Scale Activated Carbon Production from Agricultural Pea Waste: A Techno-Economic and Feasibility Study (2022)
Book Chapter
Zein, S. H., & Antony, A. (2022). Industrial-Scale Activated Carbon Production from Agricultural Pea Waste: A Techno-Economic and Feasibility Study. In R. Pullabhotla (Ed.), Prime Archives in Chemistry. (2nd ed.). Hyderabad: Vide Leaf. https://doi.org/10.37247/pachem2ed.2.22.27

This paper examines a novel approach to activated carbon (AC) production that uses pea waste (PW) and to what extent it is economically competitive with current production methods. Additionally, the outcome is to provide a detailed economic analy... Read More about Industrial-Scale Activated Carbon Production from Agricultural Pea Waste: A Techno-Economic and Feasibility Study.

Latest Advances in Waste Plastic Pyrolytic Catalysis (2022)
Journal Article
Yansaneh, O. Y., & Zein, S. H. (2022). Latest Advances in Waste Plastic Pyrolytic Catalysis. Processes, 10(4), Article 683. https://doi.org/10.3390/pr10040683

With the increase in demand for plastic use, waste plastic (WP) management remains a challenge in the contemporary world due to the lack of sustainable efforts to tackle it. The increment in WPs is proportional to man’s demand and use of plastics, an... Read More about Latest Advances in Waste Plastic Pyrolytic Catalysis.

Recent Advances on Waste Plastic Thermal Pyrolysis: A Critical Overview (2022)
Journal Article
Yansaneh, O. Y., & Zein, S. H. (2022). Recent Advances on Waste Plastic Thermal Pyrolysis: A Critical Overview. Processes, 10(2), Article 332. https://doi.org/10.3390/pr10020332

Post-consumer plastic management, otherwise termed waste plastic (WP) management, is a great challenge in today’s world, mainly because of its characteristic biodegradation properties. The quantity of waste plastics correspondingly increases with the... Read More about Recent Advances on Waste Plastic Thermal Pyrolysis: A Critical Overview.

Techno-economic analysis and feasibility of industrial-scale biodiesel production from spent coffee grounds (2021)
Journal Article
Thoppil, Y., & Zein, S. H. (2021). Techno-economic analysis and feasibility of industrial-scale biodiesel production from spent coffee grounds. Journal of cleaner production, 307, Article 127113. https://doi.org/10.1016/j.jclepro.2021.127113

The depletion of the overall provision of crude oil has contributed to the penury for replacing diesel inside the tape drive industry to mitigate their impact. The purpose of the study is to perform an economic analysis to key out the viability of de... Read More about Techno-economic analysis and feasibility of industrial-scale biodiesel production from spent coffee grounds.

A circular economy approach for industrial scale biodiesel production from palm oil mill effluent using microwave heating: Design, simulation, techno-economic analysis and location comparison (2021)
Journal Article
Waudby, H., & Zein, S. H. (2021). A circular economy approach for industrial scale biodiesel production from palm oil mill effluent using microwave heating: Design, simulation, techno-economic analysis and location comparison. Process Safety and Environmental Protection, 148, 1006-1018. https://doi.org/10.1016/j.psep.2021.02.011

This paper examines a green approach to produce industrial-scale biodiesel from a palm oil mill effluent (POME) using Microwave Heating. Kinetic data were determined for this reaction and implemented into the Aspen HYSYS simulation software to produc... Read More about A circular economy approach for industrial scale biodiesel production from palm oil mill effluent using microwave heating: Design, simulation, techno-economic analysis and location comparison.

Electrochemical quantification of D-glucose during the production of bioethanol from thermo-mechanically pre-treated wheat straw (2021)
Journal Article
Ward, R. A., Charlton, A., Welham, K. J., Baker, P., Zein, S. H., Tomkinson, J., …Wadhawan, J. D. (2021). Electrochemical quantification of D-glucose during the production of bioethanol from thermo-mechanically pre-treated wheat straw. Electrochemistry communications, 124, Article 106942. https://doi.org/10.1016/j.elecom.2021.106942

Mechanical pre-treatment (disc refining) of wheat straw, at both atmospheric and elevated pressure, is shown to be an efficient process to access fermentable monosaccharides, with the potential to integrate within the infrastructure of existing first... Read More about Electrochemical quantification of D-glucose during the production of bioethanol from thermo-mechanically pre-treated wheat straw.

Esterification of residual palm oil using solid acid catalyst derived from rice husk (2020)
Journal Article
Semilin, V., Balan, W. S., Janaun, J., Chung, C. H., Zhu, Z., Haywood, S. K., …Zein, S. H. (2021). Esterification of residual palm oil using solid acid catalyst derived from rice husk. Journal of hazardous materials, 404(Part B), Article 124092. https://doi.org/10.1016/j.jhazmat.2020.124092

In this study, carbon-silica based acid catalysts derived from rice husks (RH) were successfully synthesised using microwave (MW) technology. The results showed that MW sulphonation produced Sulphur (S) content of 17.2–18.5 times higher than in raw R... Read More about Esterification of residual palm oil using solid acid catalyst derived from rice husk.

Recovery of oil from palm oil mill effluent using polypropylene micro/nanofiber (2020)
Journal Article
Semilin, V., Janaun, J., Chung, C. H., Touhami, D., Haywood, S. K., Chong, K. P., …Zein, S. H. (2021). Recovery of oil from palm oil mill effluent using polypropylene micro/nanofiber. Journal of hazardous materials, 404, Article 124144. https://doi.org/10.1016/j.jhazmat.2020.124144

Residual palm oil that goes into the river untreated can become detrimental to the environment. Residual oil discharge during milling process into palm oil mill effluent (POME) is unavoidable. About 1 wt% of residual oil in POME causes major problems... Read More about Recovery of oil from palm oil mill effluent using polypropylene micro/nanofiber.

Single-Step extraction-esterification process to produce Biodiesel from Palm Oil Mill Effluent (POME) using microwave heating: a circular economy approach to making use of a difficult waste product. (2020)
Journal Article
Davies, E., Deutz, P., & Zein, S. H. (in press). Single-Step extraction-esterification process to produce Biodiesel from Palm Oil Mill Effluent (POME) using microwave heating: a circular economy approach to making use of a difficult waste product. Biomass Conversion and Biorefinery, https://doi.org/10.1007/s13399-020-00856-1

This investigation explores single step biodiesel synthesis using Palm Oil Mill Effluent (POME) as a feedstock. Normally considered a waste product from the extraction process of palm oil, POME treatment is difficult and can cause significant environ... Read More about Single-Step extraction-esterification process to produce Biodiesel from Palm Oil Mill Effluent (POME) using microwave heating: a circular economy approach to making use of a difficult waste product..

Optimization of pH as a strategy to improve enzymatic saccharification of wheat straw for enhancing bioethanol production (2020)
Journal Article
Abdulsattar, M., Abdulsattar, J., Greenway, G., Welham, K., & Zein, S. H. (2020). Optimization of pH as a strategy to improve enzymatic saccharification of wheat straw for enhancing bioethanol production. Journal of Analytical Science and Technology, 11(1), Article 17. https://doi.org/10.1186/s40543-020-00217-7

In this work, wheat straw (WS) was used as a lignocellulosic substrate to investigate the influence of pH on enzymatic saccharification. The optimum enzymatic hydrolysis occurred at pH range 5.8 – 6.0, instead of 4.8 - 5.0 as has been widely reported... Read More about Optimization of pH as a strategy to improve enzymatic saccharification of wheat straw for enhancing bioethanol production.

An innovative method of extraction of coffee oil using an advanced microwave system: in comparison with conventional Soxhlet extraction method (2019)
Journal Article
Hibbert, S., Welham, K., & Zein, S. H. (2019). An innovative method of extraction of coffee oil using an advanced microwave system: in comparison with conventional Soxhlet extraction method. SN Applied Sciences, 1(11), Article 1467. https://doi.org/10.1007/s42452-019-1457-5

The production of energy and chemicals from waste biomass is an attractive alternative by comparison with first generation biofuels and fossil feedstocks. This paper investigates oil extraction from spent coffee grounds (SCG) by means of an advanced... Read More about An innovative method of extraction of coffee oil using an advanced microwave system: in comparison with conventional Soxhlet extraction method.

Rheological evaluation of the fabrication parameters of cellulose acetate butyrate membrane on CO2/N2 separation performance (2019)
Book Chapter
Lee, R., Jawad, Z., Ahmad, A., Chua, H., Ngang, H., & Zein, S. (2019). Rheological evaluation of the fabrication parameters of cellulose acetate butyrate membrane on CO2/N2 separation performance. In Z. A. Jawad (Ed.), Membrane Technology for CO2 Sequestration and Separation (202-225). (1). Boca Raton: Taylor & Francis

The rise in emission of greenhouse gases (GHGs) mainly carbon dioxide (CO2) in recent years due to rapid development of modern civilisation, has been listed as the primary contributor to global warming. To address this global issue, membrane technolo... Read More about Rheological evaluation of the fabrication parameters of cellulose acetate butyrate membrane on CO2/N2 separation performance.

Wheat straw bio-refining. Part II: Optimization of the microwave radiation with sulphuric acid pre-treatment and its enzymatic hydrolysis for fermentable sugars (2017)
Journal Article
Festus, O., Skoulou, V. K., & Zein, S. H. (2017). Wheat straw bio-refining. Part II: Optimization of the microwave radiation with sulphuric acid pre-treatment and its enzymatic hydrolysis for fermentable sugars. Current Microwave Chemistry, 4(4), 306-316. https://doi.org/10.2174/2213335604666171103123459

Background: The potential of microwave-assisted heating for enhancing the alkaline pretreatment of lignocellulosic waste is highlighted in this work. Objective: To maximize separation of fermentable sugars from wheat straw. Methods: Wheat straw... Read More about Wheat straw bio-refining. Part II: Optimization of the microwave radiation with sulphuric acid pre-treatment and its enzymatic hydrolysis for fermentable sugars.

Wheat Straw Bio-refining. Part I: Optimization of the Microwave Radiation Process with Sulphuric Acid Pre-treatment (2017)
Journal Article
Demirhan, H., Fauzi, A., Skoulou, V. . K., Haywood, S. . . H., & Zein, S. . . H. (2017). Wheat Straw Bio-refining. Part I: Optimization of the Microwave Radiation Process with Sulphuric Acid Pre-treatment. Current Microwave Chemistry, 4(3), https://doi.org/10.2174/2213335604666170719113659

Background: This study investigates the microwave-assisted acid extraction of lignin from wheat straw. Methods: Two experimental design methods, the Central Composite Design (CCD) and the Response Surface Method (RSM) methods were used to select c... Read More about Wheat Straw Bio-refining. Part I: Optimization of the Microwave Radiation Process with Sulphuric Acid Pre-treatment.

Wheat Straw Bio-refining. Part I: Optimization of the Microwave Radiation Process with Sulphuric Acid Pre-treatment (2017)
Journal Article
Demirhan, H., Fauzi, A., Skoulou, V., Haywood, S., & Zein, S. H. (2017). Wheat Straw Bio-refining. Part I: Optimization of the Microwave Radiation Process with Sulphuric Acid Pre-treatment. Current Microwave Chemistry, 4(3), 205-218. https://doi.org/10.2174/2213335604666170719113659

Background: This study investigates the microwave-assisted acid extraction of lignin from wheat straw. Methods: Two experimental design methods, the Central Composite Design (CCD) and the Response Surface Method (RSM) methods were used to select c... Read More about Wheat Straw Bio-refining. Part I: Optimization of the Microwave Radiation Process with Sulphuric Acid Pre-treatment.

Characterization of rice husk-based catalyst prepared via conventional and microwave carbonisation (2017)
Journal Article
Touhami, D., Zhu, Z., Balan, W. S., Janaun, J., Haywood, S., & Zein, S. (2017). Characterization of rice husk-based catalyst prepared via conventional and microwave carbonisation. Journal of Environmental Chemical Engineering, 5(3), 2388-2394. https://doi.org/10.1016/j.jece.2017.04.020

© 2017 Elsevier Ltd. Carbon-based sulphonated catalysts (CBSCs) were made from rice husk for biodiesel production. The CBSCs were prepared by microwave (MW) and conventional heating processes from the same feedstock. In both heating systems, the prep... Read More about Characterization of rice husk-based catalyst prepared via conventional and microwave carbonisation.

Nanocarbons from acid pretreated waste coffee grounds using microwave radiation (2017)
Journal Article
Zein, S. H., Gyamera, B. A., & Skoulou, V. K. (2017). Nanocarbons from acid pretreated waste coffee grounds using microwave radiation. Materials letters, 193, 46-49. https://doi.org/10.1016/j.matlet.2017.01.100

This study investigates the use of microwave radiation to produce nanocarbons from Waste Coffee Grounds (WCG). It is first step to demonstrate the potential of integrating the microwave power to conventional methods of carbonaceous materials and nano... Read More about Nanocarbons from acid pretreated waste coffee grounds using microwave radiation.

Investigation of the chemocatalytic and biocatalytic valorization of a range of different lignin preparations: The importance of β-O-4 content (2016)
Journal Article
Lancefield, C. S., Rashid, G. M. M., Bouxin, F., Wasak, A., Tu, W., Hallett, J., …Bugg, T. D. H. (2016). Investigation of the chemocatalytic and biocatalytic valorization of a range of different lignin preparations: The importance of β-O-4 content. ACS Sustainable Chemistry and Engineering, 4(12), 6921-6930. https://doi.org/10.1021/acssuschemeng.6b01855

A set of seven different lignin preparations was generated from a range of organosolv (acidic, alkaline, ammonia-treated, and dioxane-based), ionic liquid, autohydrolysis, and Kraft pretreatments of lignocelluloses. Each lignin was characterized by 2... Read More about Investigation of the chemocatalytic and biocatalytic valorization of a range of different lignin preparations: The importance of β-O-4 content.

Effect of ions in ionic liquids on the characteristics of cellulose from coconut husk fibres (2016)
Journal Article
Reh, N. A., Zakaria, R., & Zein, S. H. (2016). Effect of ions in ionic liquids on the characteristics of cellulose from coconut husk fibres. International journal of biomedical engineering and technology, 21(1), 80-94. https://doi.org/10.1504/IJBET.2016.076734

This paper reports the properties of cellulose nanowhiskers as new potential biomaterials. Cellulose nanowhiskers were produced from coconut husk fibres using four different anions of ionic liquids: 1-butyl-3-mehtylimidzalium chloride, 1-butyl-3-meht... Read More about Effect of ions in ionic liquids on the characteristics of cellulose from coconut husk fibres.

Incorporation of inorganic carbon nanotubes fillers into the CA polymeric matrix for improvement in CO2/N2 separation (2015)
Journal Article
Jawad, Z. A., Ahmad, A. L., Low, S. C., & Zein, S. H. (2015). Incorporation of inorganic carbon nanotubes fillers into the CA polymeric matrix for improvement in CO2/N2 separation. Current nanoscience, 11(1), 69-79. https://doi.org/10.2174/1573413710666140922224633

Among all separation techniques, membrane technology has been shown to reduce CO 2 emissions without any phase changes due to its rapid, energy efficient process. The membrane-based gas separation must consist of a defect-free, thin, dense skin layer... Read More about Incorporation of inorganic carbon nanotubes fillers into the CA polymeric matrix for improvement in CO2/N2 separation.

Rebuttal to the comment on article "poly(3-hydroxybutyrate)-functionalised multi-walled carbon nanotubes/chitosan green nanocomposite membranes and their application in pervaporation" (2015)
Journal Article
Ong, Y. T., Ahmad, A. L., Zein, S. H. S., Sudesh, K., & Tan, S. H. (2016). Rebuttal to the comment on article "poly(3-hydroxybutyrate)-functionalised multi-walled carbon nanotubes/chitosan green nanocomposite membranes and their application in pervaporation". Separation and purification technology, 158, 94-95. https://doi.org/10.1016/j.seppur.2015.11.042

Reply to "non green perspective on biodegradable polymer nanocomposites" (2015)
Journal Article
Ong, Y. T., Ahmad, A. L., Zein, S. H. S., & Tan, S. H. (2015). Reply to "non green perspective on biodegradable polymer nanocomposites". Brazilian journal of chemical Engineering, 32(4), 976. https://doi.org/10.1590/0104-6632.20150324r20150178

Influence of solvent exchange time on mixed matrix membrane separation performance for CO2/N2and a kinetic sorption study (2014)
Journal Article
Jawad, Z. A., Ahmad, A. L., Low, S. C., Chew, T. L., & Zein, S. H. (2015). Influence of solvent exchange time on mixed matrix membrane separation performance for CO2/N2and a kinetic sorption study. Journal of membrane science, 476, 590-601. https://doi.org/10.1016/j.memsci.2014.11.008

Carbon dioxide (CO 2 ) is the largest contributor of greenhouse gas emissions. Mixed matrix membranes (MMMs) have recently received attention as an attractive candidate for membrane-based separation, for which MMMs can serve as an alternative to conv... Read More about Influence of solvent exchange time on mixed matrix membrane separation performance for CO2/N2and a kinetic sorption study.

Carbon Nanotubes: Next-Generation Nanomaterials for Clean Water Technologies (2014)
Book Chapter
Ong, Y. T., Yee, K. F., Yeang, Q. W., Zein, S. H. S., & Tan, S. H. (2014). Carbon Nanotubes: Next-Generation Nanomaterials for Clean Water Technologies. In B. I. Kharisov, O. V. Kharissova, & H. R. Dias (Eds.), Nanomaterials for Environmental Protection (125-142). Hoboken, NJ: John Wiley and Sons. https://doi.org/10.1002/9781118845530.ch8

© 2014 John Wiley & Sons, Inc. Substantial progress and breakthroughs have been achieved for nanomaterials because of their nanometer size. Carbon nanotubes (CNTs), a type of nanomaterial, have received considerable interest worldwide because of th... Read More about Carbon Nanotubes: Next-Generation Nanomaterials for Clean Water Technologies.

Green tea polyphenol-reduced graphene oxide: derivatisation, reduction efficiency, reduction mechanism and cytotoxicity (2014)
Journal Article
Abdullah, M. F., Zakaria, R., & Zein, S. H. S. (2014). Green tea polyphenol-reduced graphene oxide: derivatisation, reduction efficiency, reduction mechanism and cytotoxicity. RSC advances, 4(65), 34510-34518. https://doi.org/10.1039/c4ra04292a

This paper reports on the derivatisation, reduction efficiency, reduction mechanism and cytotoxicity of green tea polyphenol-reduced graphene oxide (GTP-RGO). The reduction of graphene oxide (GO) at 90°C using a weight ratio (WR) of GTP/GO=1 resulted... Read More about Green tea polyphenol-reduced graphene oxide: derivatisation, reduction efficiency, reduction mechanism and cytotoxicity.

Future scope and directions of nanotechnology in creating next-generation supercapacitors (2014)
Book Chapter
Kiamahalleh, M. V., & Zein, S. H. S. (2014). Future scope and directions of nanotechnology in creating next-generation supercapacitors. In Nanostructured Ceramic Oxides for Supercapacitor Applications (153-190). Boca Raton, FL, USA: CRC Press. https://doi.org/10.1201/b16522-10

The primary global research scheme of the 21st century is nanotechnology. Looking forward to the future, nanotechnologies’ generalized diffusion will seem to turn them into supplies, generating more space for privileged and superior values of applica... Read More about Future scope and directions of nanotechnology in creating next-generation supercapacitors.

A cellulose acetate/multi-walled carbon nanotube mixed matrix membrane for CO2/N2separation (2013)
Journal Article
Ahmad, A. L., Jawad, Z. A., Low, S. C., & Zein, S. H. (2014). A cellulose acetate/multi-walled carbon nanotube mixed matrix membrane for CO2/N2separation. Journal of membrane science, 451, 55-66. https://doi.org/10.1016/j.memsci.2013.09.043

Carbon dioxide (CO 2 ) emissions have been rising indiscriminately and are becoming a major contributor to Earth's greenhouse effect. One of the most promising means of separating the hazardous CO 2 gas is to develop a cost effective and high-perform... Read More about A cellulose acetate/multi-walled carbon nanotube mixed matrix membrane for CO2/N2separation.

Facile Synthesis of Silver Nanoparticles by Chemical Reduction Route (2013)
Journal Article
Ratnamalar, R., Mariatti, M., Ahmad, Z., & Zein, S. (2013). Facile Synthesis of Silver Nanoparticles by Chemical Reduction Route. Materials Science Forum, 756, 99-105. https://doi.org/10.4028/www.scientific.net/msf.756.99

This work reports a simple chemical reduction route for the preparation of uniformed Ag nanoparticles whereby a fine control over the sizes of the Ag nanoparticles was studied by varying the concentrations of the reducing agents used. In characteriza... Read More about Facile Synthesis of Silver Nanoparticles by Chemical Reduction Route.

Nanophase Hydroxyapatite as a biomaterial in advanced hard tissue engineering: A review (2013)
Journal Article
Zakaria, S. M., Sharif Zein, S. H., Othman, M. R., Yang, F., & Jansen, J. A. (2013). Nanophase Hydroxyapatite as a biomaterial in advanced hard tissue engineering: A review. Tissue Engineering: Parts A, B, and C, 19(5), 431-441. https://doi.org/10.1089/ten.teb.2012.0624

Hydroxyapatite is a biocompatible material that is extensively used in the replacement and regeneration of bone material. In nature, nanostructured hydroxyapatite is the main component present in hard body tissues. Hence, the state of the art in nano... Read More about Nanophase Hydroxyapatite as a biomaterial in advanced hard tissue engineering: A review.

Comparison of the pervaporation performance of various types of carbon nanotube-based nanocomposites in the dehydration of acetone (2013)
Journal Article
Yeang, Q. W., Zein, S. H. S., Sulong, A. B., & Tan, S. H. (2013). Comparison of the pervaporation performance of various types of carbon nanotube-based nanocomposites in the dehydration of acetone. Separation and purification technology, 107, 252-263. https://doi.org/10.1016/j.seppur.2013.01.031

The present work focuses on the functionalisation of multi-walled carbon nanotubes (MWCNTs) with poly(vinyl alcohol) (PVA) in order to improve the compatibility and dispersion of MWCNTs in a chitosan (CS) matrix. The resultant PVA-MWCNT/CS nanocompos... Read More about Comparison of the pervaporation performance of various types of carbon nanotube-based nanocomposites in the dehydration of acetone.

The Functionalization of Beta-Cyclodextrins on Multi Walled Carbon Nanotubes: Effects of the Dispersant and Non Aqueous Media (2013)
Journal Article
Latif Ahmad, A., Abbas Jawad, Z., Chun Low, S., & Hussein Sharif Zein, S. (2013). The Functionalization of Beta-Cyclodextrins on Multi Walled Carbon Nanotubes: Effects of the Dispersant and Non Aqueous Media. Current nanoscience, 9(1), 93-102. https://doi.org/10.2174/1573413711309010015

Sidewall functionalization by chemical agents can improve the dispersion of carbon nanotubes (CNTs), but the improvement is at the expense of their properties and structure. An environmentally friendly dispersant, cyclodextrins (CD), was revealed as... Read More about The Functionalization of Beta-Cyclodextrins on Multi Walled Carbon Nanotubes: Effects of the Dispersant and Non Aqueous Media.

Cytocompatibility, bioactivity and mechanical strength of calcium phosphate cement reinforced with multi-walled carbon nanotubes and bovine serum albumin (2012)
Journal Article
Gholami, F., Zein, S. H. S., Gerhardt, L. C., Low, K. L., Tan, S. H., McPhail, D. S., …Boccaccini, A. R. (2013). Cytocompatibility, bioactivity and mechanical strength of calcium phosphate cement reinforced with multi-walled carbon nanotubes and bovine serum albumin. Ceramics international, 39(5), 4975-4983. https://doi.org/10.1016/j.ceramint.2012.11.094

This paper reports on the in vitro cytotoxicity, bioactivity behaviour and mechanical properties of novel injectable calcium phosphate cement filled with hydroxylated multi-walled carbon nanotubes and bovine serum albumin (CPC/MWCNT-OH/BSA). To predi... Read More about Cytocompatibility, bioactivity and mechanical strength of calcium phosphate cement reinforced with multi-walled carbon nanotubes and bovine serum albumin.

The electrochemical studies of the corrosion resistance behaviour of hydroxyapatite coatings on stainless steel fabricated by electrophoretic deposition (2012)
Journal Article
Chew, K. K., Zein, S. H. S., Ahmad, A. L., McPhail, D. S., & Abdullah, M. F. (2013). The electrochemical studies of the corrosion resistance behaviour of hydroxyapatite coatings on stainless steel fabricated by electrophoretic deposition. Journal of Industrial and Engineering Chemistry, 19(4), 1123-1129. https://doi.org/10.1016/j.jiec.2012.12.008

HA was coated on stainless steel (SS) 316L by using electrophoretic deposition to impart corrosion resistance upon SS 316L. Consequently, corrosion behaviour of HA coated SS 316L deposited from applied voltages 10. V to 60. V (denoted as HA/SS316L-10... Read More about The electrochemical studies of the corrosion resistance behaviour of hydroxyapatite coatings on stainless steel fabricated by electrophoretic deposition.

Hydroxyapatite nanoparticles: Electrospinning and calcination of hydroxyapatite/polyvinyl butyral nanofibers and growth kinetics (2012)
Journal Article
Zakaria, S. M., Sharif Zein, S. H., Othman, M. R., & Jansen, J. A. (2013). Hydroxyapatite nanoparticles: Electrospinning and calcination of hydroxyapatite/polyvinyl butyral nanofibers and growth kinetics. Journal of biomedical materials research. Part A, 101A(7), 1977-1985. https://doi.org/10.1002/jbm.a.34506

Electrospinning of hydroxyapatite (HA)/polyvinyl butyral solution resulted in the formation of fibers with average diameter of 937-1440 nm. These fibers were converted into HA nanoparticles with size < 100 nm after undergoing calcination treatment a... Read More about Hydroxyapatite nanoparticles: Electrospinning and calcination of hydroxyapatite/polyvinyl butyral nanofibers and growth kinetics.

Electrochemical impedance spectroscopy (EIS) study of modified type-316l stainless steel (SS) as an effective biomaterial for orthopedic implant applications (2012)
Journal Article
Zein, S. H. S., & Abdullah, M. F. (2012). Electrochemical impedance spectroscopy (EIS) study of modified type-316l stainless steel (SS) as an effective biomaterial for orthopedic implant applications. Journal of nanomedicine & nanotechnology, 3(4), https://doi.org/10.4172/2157-7439.1000e108

Multiwalled carbon nanotubes based nanocomposites for supercapacitors: A review of electrode materials (2012)
Journal Article
Kiamahalleh, M. V., Zein, S. H. S., Najafpour, G., Sata, S. A., & Buniran, S. (2012). Multiwalled carbon nanotubes based nanocomposites for supercapacitors: A review of electrode materials. Nano, 7(2), Article 1230002. https://doi.org/10.1142/S1793292012300022

Electrode materials are the most important factors to verify the properties of the electrochemical supercapacitor. In this paper, the storage principles and characteristics of electrode materials, including carbon-based materials, transition metal ox... Read More about Multiwalled carbon nanotubes based nanocomposites for supercapacitors: A review of electrode materials.

Corrosion resistance study of electrophoretic deposited hydroxyapatite on stainless steel for implant applications (2012)
Journal Article
Chew, K. K., Zein, S. H. S., Ahmad, A. L., McPhail, D. S., & Boccaccini, A. R. (2012). Corrosion resistance study of electrophoretic deposited hydroxyapatite on stainless steel for implant applications. Key engineering materials, 507, 141-146. https://doi.org/10.4028/www.scientific.net/KEM.507.141

Stainless steel (SS) is often used for orthopaedic and dental implants because of its excellent mechanical characteristics. However, from an electrochemical perspective, SS can be susceptible to corrosion-related problems. Inorganic bioactive coating... Read More about Corrosion resistance study of electrophoretic deposited hydroxyapatite on stainless steel for implant applications.

The optimization of electrical conductivity using central composite design for polyvinyl alcohol/multiwalled carbon nanotube-manganese dioxide nanofiber composites synthesised by electrospinning (2012)
Journal Article
Zamri, M. F. M. A., Zein, S. H. S., Abdullah, A. Z., & Basir, N. I. (2012). The optimization of electrical conductivity using central composite design for polyvinyl alcohol/multiwalled carbon nanotube-manganese dioxide nanofiber composites synthesised by electrospinning. Journal of applied sciences (Asian Network for Scientific Information), 12(4), 345-353. https://doi.org/10.3923/jas.2012.345.353

This research reports the characterization and statistical analysis of electrical conductivity optimization for polyvinyl alcohol (PVA)/multiwalled carbon nanotube (MWCNT)-manganese dioxide (MnO 2 ) nanofiber composite. The Central Composite Design (... Read More about The optimization of electrical conductivity using central composite design for polyvinyl alcohol/multiwalled carbon nanotube-manganese dioxide nanofiber composites synthesised by electrospinning.

Energy and environmental applications of carbon nanotubes (2012)
Journal Article
Tan, C. W., Tan, K. H., Ong, Y. T., Mohamed, A. R., Zein, S. H. S., & Tan, S. H. (2012). Energy and environmental applications of carbon nanotubes. Environmental chemistry letters, 10(3), 265-273. https://doi.org/10.1007/s10311-012-0356-4

Energy and environment are major global issues inducing environmental pollution problems. Energy generation from conventional fossil fuels has been identified as the main culprit of environmental quality degradation and environmental pollution. In or... Read More about Energy and environmental applications of carbon nanotubes.

Preparation of Perovskite Titania Ceramic Membrane by Sol-Gel Method (2012)
Book Chapter
Ahmad, A. L., Abdullah, S. N. A., & Zein, S. H. S. (2012). Preparation of Perovskite Titania Ceramic Membrane by Sol-Gel Method. In A. Fauzi Ismail, & T. Matsuura (Eds.), Sustainable Membrane Technology for Energy, Water, and Environment (95-104). Hoboken, N.J.: John Wiley and Sons. https://doi.org/10.1002/9781118190180.ch9

Investigation into the role of NaOH and calcium ions in the synthesis of calcium phosphate nanoshells (2012)
Journal Article
Yeo, C. H., Zein, S. H., Ahmad, A. L., & McPhail, D. S. (2012). Investigation into the role of NaOH and calcium ions in the synthesis of calcium phosphate nanoshells. Brazilian journal of chemical Engineering, 29(1), 147-158. https://doi.org/10.1590/S0104-66322012000100016

Calcium phosphate (CaP) nanoshells were prepared using negatively charged liposomes (1,2-dioleoyl-sn-glycero-3-phosphate sodium salt (DOPA)) as a template by base titration synthesis at various concentrations of NaOH and calcium ions. The elemental c... Read More about Investigation into the role of NaOH and calcium ions in the synthesis of calcium phosphate nanoshells.

Influence of calcination temperature and perovskite concentration on the morphology, gas permeance and selectivity of perovskite-titania membranes (2011)
Journal Article
Ahmad, A. L., Sani, N. A. A., & Zein, S. H. S. (2011). Influence of calcination temperature and perovskite concentration on the morphology, gas permeance and selectivity of perovskite-titania membranes. Journal of ceramic science and technology an international journal reporting on the synthesis, structure and properties of ceramics, 2(1), 9-14. https://doi.org/10.4416/JCST2010-00026

Defect-free titania membranes doped with different concentrations of SrCo 0.8 Fe 0.2 O 3 perovskite were successfully prepared using a sol-gel technique combined with a wet impregnation process. The titania membranes were immersed in a perovskite so... Read More about Influence of calcination temperature and perovskite concentration on the morphology, gas permeance and selectivity of perovskite-titania membranes.

Carbon nanotubes applications: Solar and fuel cells, hydrogen storage, lithium batteries, supercapacitors, nanocomposites, gas, pathogens, dyes, heavy metals and pesticides (2011)
Book Chapter
Tan, C. W., Tan, K. H., Ong, Y. T., Mohamed, A. R., Zein, S. H. S., & Tan, S. H. (2012). Carbon nanotubes applications: Solar and fuel cells, hydrogen storage, lithium batteries, supercapacitors, nanocomposites, gas, pathogens, dyes, heavy metals and pesticides. In E. Lichtfouse, J. Schwarzbauer, & D. Robert (Eds.), Environmental Chemistry for a Sustainable World, Volume 1: Nanotechnology and Health Risk (3-46). Dordrecht: Springer. https://doi.org/10.1007/978-94-007-2442-6_1

Energy and environment are major global issues inducing environmental pollution. Energy generation from conventional fossil fuels has been identified as the main culprit of environmental degradation from global warming effects, in addition to environ... Read More about Carbon nanotubes applications: Solar and fuel cells, hydrogen storage, lithium batteries, supercapacitors, nanocomposites, gas, pathogens, dyes, heavy metals and pesticides.

Structural and interaction properties of encapsulated Mno2 nanowires filled MWCNTs (2011)
Journal Article
Abd Razak, S. I., & Sharif Zein, S. H. (2011). Structural and interaction properties of encapsulated Mno2 nanowires filled MWCNTs. Nano, 06(05), 435-439. https://doi.org/10.1142/S1793292011002822

Uniform encapsulated MnO2 nanowires were achieved within the cavity of multiwalled carbon nanotubes (MWCNTs). The Raman spectra revealed a charge-transfer shifts between the MnO2 particles and the inner tube of MWCNTs. Thin, uniform and continuous Mn... Read More about Structural and interaction properties of encapsulated Mno2 nanowires filled MWCNTs.

Comparison of DOPA and DPPA liposome templates for the synthesis of calcium phosphate nanoshells (2011)
Journal Article
Yeo, C. H., Zein, S. H. S., Ahmad, A. L., & McPhail, D. S. (2012). Comparison of DOPA and DPPA liposome templates for the synthesis of calcium phosphate nanoshells. Ceramics international, 38(1), 561-570. https://doi.org/10.1016/j.ceramint.2011.07.044

The aim of this paper is to synthesise calcium phosphate (CaP) nanoshells by controlling their particle size and shape using negatively charged liposomes (1,2 dioleoyl-sn-glycero-3 phosphate sodium salt (DOPA) and 1,2-dipalmitoyl-sn- glycero-3-phosph... Read More about Comparison of DOPA and DPPA liposome templates for the synthesis of calcium phosphate nanoshells.

Synthesis, characterization and biodegradation of novel poly(L-lactide)/multi- walled carbon nanotube porous scaffolds for tissue engineering applications (2011)
Journal Article
Adeli, H., Zein, S. H. S., Tan, S. H., Akil, H. M., & Ahmad, A. L. (2011). Synthesis, characterization and biodegradation of novel poly(L-lactide)/multi- walled carbon nanotube porous scaffolds for tissue engineering applications. Current nanoscience, 7(3), 323-332. https://doi.org/10.2174/157341311795542552

This paper reports on the synthesis and characterization of novel poly(L-lactide)/multi-walled carbon nanotube (PLLA/MWCNT) porous scaffolds prepared by the freeze-extraction method. The obtained scaffolds showed well-distributed and interconnected p... Read More about Synthesis, characterization and biodegradation of novel poly(L-lactide)/multi- walled carbon nanotube porous scaffolds for tissue engineering applications.

Preparation and capacitive properties of nickel-manganese oxides/multiwalled carbon nanotube/poly (3,4-ethylenedioxythiophene) composite material for electrochemical supercapacitor (2011)
Journal Article
Kiamahalleh, M. V., Cheng, C. I., Sata, S. A., Bumran, S., & Zein, S. H. S. (2011). Preparation and capacitive properties of nickel-manganese oxides/multiwalled carbon nanotube/poly (3,4-ethylenedioxythiophene) composite material for electrochemical supercapacitor. Journal of applied sciences (Asian Network for Scientific Information), 11(13), 2346-2351. https://doi.org/10.3923/jas.2011.2346.2351

Nickel-manganese oxides/multiwalled carbon nanotubes/poly (3,4-ethylenedioxythiophene) (NMO/MWCNTs/PEDOT) nanocomposite was prepared by in chemical oxidation method and served as electrode material in supercapacitor. Binary nanocomposites of NMO/MWCN... Read More about Preparation and capacitive properties of nickel-manganese oxides/multiwalled carbon nanotube/poly (3,4-ethylenedioxythiophene) composite material for electrochemical supercapacitor.

The effect of interfacial bonding of calcium phosphate cements containing bio-mineralized multi-walled carbon nanotube and bovine serum albumin on the mechanical properties of calcium phosphate cements (2011)
Journal Article
Low, K. L., Zein, S. H. S., Tan, S. H., McPhail, D. S., & Boccaccini, A. R. (2011). The effect of interfacial bonding of calcium phosphate cements containing bio-mineralized multi-walled carbon nanotube and bovine serum albumin on the mechanical properties of calcium phosphate cements. Ceramics international, 37(7), 2429-2435. https://doi.org/10.1016/j.ceramint.2011.05.092

The aim of this study was to investigate the effect of adding bio-mineralized hydroxyl functionalized multi-walled carbon nanotubes (MWCNTs-OH) on the compressive strength of calcium phosphate cements (CPCs). Bovine serum albumin (BSA) was also incor... Read More about The effect of interfacial bonding of calcium phosphate cements containing bio-mineralized multi-walled carbon nanotube and bovine serum albumin on the mechanical properties of calcium phosphate cements.

Optimization of the mechanical strength properties of poly(L-lactide)/ multi-walled carbon nanotube scaffolds using response surface methodology (2011)
Journal Article
Adeli, H., Sharif Zein, S. H., Tan, S. H., & Ahmad, A. L. (2011). Optimization of the mechanical strength properties of poly(L-lactide)/ multi-walled carbon nanotube scaffolds using response surface methodology. Nano, 06(02), 113-122. https://doi.org/10.1142/S1793292011002470

In this study the response surface methodology (RSM) coupled with the central composite design (CCD) were used to optimize the mechanical strength properties of poly(L-lactide)/multi-walled carbon nanotube (MWCNT) scaffolds. The scaffolds were prepar... Read More about Optimization of the mechanical strength properties of poly(L-lactide)/ multi-walled carbon nanotube scaffolds using response surface methodology.

Synthesis of a TiO2 ceramic membrane containing SrCo 0.8Fe0.2O3 by the sol-gel method with a wet impregnation process for O2 and N2 permeation (2011)
Journal Article
Ahmad, A. L., Abdullah Sani, N. A., & Sharif Zein, S. H. (2011). Synthesis of a TiO2 ceramic membrane containing SrCo 0.8Fe0.2O3 by the sol-gel method with a wet impregnation process for O2 and N2 permeation. Ceramics international, 37(8), 2981-2989. https://doi.org/10.1016/j.ceramint.2011.03.036

A SrCo0.8Fe0.2O3 impregnated TiO2 membrane (TiO2–SrCo0.8Fe0.2O3 membrane) was successfully prepared using a sol–gel method in combination with a wet impregnation process. The membrane was subjected to a single gas permeance test using oxygen (O2) and... Read More about Synthesis of a TiO2 ceramic membrane containing SrCo 0.8Fe0.2O3 by the sol-gel method with a wet impregnation process for O2 and N2 permeation.

MnO2-filled multiwalled carbon nanotube/polyaniline nanocomposites: Effect of loading on the conduction properties and its percolation threshold (2011)
Journal Article
Abd Razak, S. I., Sharif Zein, S. H., & Ahmad, A. L. (2011). MnO2-filled multiwalled carbon nanotube/polyaniline nanocomposites: Effect of loading on the conduction properties and its percolation threshold. Nano, 06(01), 81-91. https://doi.org/10.1142/S1793292011002378

This paper reports the synthesis and characterization of ternary nanocomposites consisting of polyaniline (PANI), multiwalled carbon nanotubes (MWCNTs) and manganese dioxide (MnO2) at different MWCNT–MnO2 loadings. The composite electrical percolatio... Read More about MnO2-filled multiwalled carbon nanotube/polyaniline nanocomposites: Effect of loading on the conduction properties and its percolation threshold.

Optimization of the mechanical properties of calcium phosphate/multi-walled carbon nanotubes/bovine serum albumin composites using response surface methodology (2011)
Journal Article
Low, K. L., Tan, S. H., Zein, S. H. S., McPhail, D. S., & Boccaccini, A. R. (2011). Optimization of the mechanical properties of calcium phosphate/multi-walled carbon nanotubes/bovine serum albumin composites using response surface methodology. Materials and Design, 32(6), 3312-3319. https://doi.org/10.1016/j.matdes.2011.02.022

Response surface methodology (RSM) coupled with the central composite design (CCD) was used to optimize the mechanical properties of calcium phosphate cement/multi-walled carbon nanotubes/bovine serum albumin (CPC/MWCNTs/BSA) composites. In this stud... Read More about Optimization of the mechanical properties of calcium phosphate/multi-walled carbon nanotubes/bovine serum albumin composites using response surface methodology.

Effect of para-hydroxybenzene sulfonic acid on the properties of ine/multiwalled carbon nanotubes-MnO2 (2010)
Journal Article
Razak, S. I. A., Zein, S. H. S., & Ahmad, A. L. (2010). Effect of para-hydroxybenzene sulfonic acid on the properties of ine/multiwalled carbon nanotubes-MnO2. Nano, 5(6), 369-373. https://doi.org/10.1142/S1793292010002293

New ex situ polyaniline (PANI)/MnO 2 -filled multiwalled carbon nanotubes (MWCNTs) nanocomposites using para-hydroxybenzene sulfonic acid (PHBSA) as a dopant and linker exhibit enhanced electrical conductivity and interfacial interaction. Strong and... Read More about Effect of para-hydroxybenzene sulfonic acid on the properties of ine/multiwalled carbon nanotubes-MnO2.

Poly(3-hydroxybutyrate)-functionalised multi-walled carbon nanotubes/chitosan green nanocomposite membranes and their application in pervaporation (2010)
Journal Article
Ong, Y. T., Ahmad, A. L., Zein, S. H. S., Sudesh, K., & Tan, S. H. (2011). Poly(3-hydroxybutyrate)-functionalised multi-walled carbon nanotubes/chitosan green nanocomposite membranes and their application in pervaporation. Separation and purification technology, 76(3), 419-427. https://doi.org/10.1016/j.seppur.2010.11.013

The aim of this research was to align poly(3-hydroxybutyrate) (PHB)-functionalised multi-walled carbon nanotubes (MWCNTs) into a chitosan matrix. The MWCNTs were first functionalised with PHB and aligned into a membrane filter template through a filt... Read More about Poly(3-hydroxybutyrate)-functionalised multi-walled carbon nanotubes/chitosan green nanocomposite membranes and their application in pervaporation.

Reinforcement of calcium phosphate cement with multi-walled carbon nanotubes and bovine serum albumin for injectable bone substitute applications (2010)
Journal Article
Chew, K., Low, K., Sharif Zein, S. H., McPhail, D. S., Gerhardt, L., Roether, J. A., & Boccaccini, A. R. (2011). Reinforcement of calcium phosphate cement with multi-walled carbon nanotubes and bovine serum albumin for injectable bone substitute applications. Journal of the mechanical behavior of biomedical materials, 4(3), 331-339. https://doi.org/10.1016/j.jmbbm.2010.10.013

This paper presents the development of novel alternative injectable calcium phosphate cement (CPC) composites for orthopaedic applications. The new CPC composites comprise β-tri-calcium phosphate (β-TCP) and di-calcium phosphate anhydrous (DCPA) mixe... Read More about Reinforcement of calcium phosphate cement with multi-walled carbon nanotubes and bovine serum albumin for injectable bone substitute applications.

Remarkable stability of supercapacitor material synthesized by manganese oxide filled in multiwalled carbon nanotubes (2010)
Journal Article
Kiamahalleh, M. V., Sata, S. A., Buniran, S., & Zein, S. H. S. (2010). Remarkable stability of supercapacitor material synthesized by manganese oxide filled in multiwalled carbon nanotubes. Current nanoscience, 6(5), 553-559. https://doi.org/10.2174/157341310797575041

Improving the electrochemical stability of manganese oxide/multiwalled carbon nanotubes (MnO 2 /MWCNTs) nanocomposites is of great importance to many electrochemical supercapacitor applications. In this study, the electrochemical properties of MnO 2... Read More about Remarkable stability of supercapacitor material synthesized by manganese oxide filled in multiwalled carbon nanotubes.

Highly efficient hybrid supercapacitor material from nickel-manganese oxides/MWCNT/PEDOT nanocomposite (2010)
Journal Article
Kiamahalleh, M. V., Cheng, C. I., Sata, S. A., Buniran, S., & Zein, S. H. S. (2010). Highly efficient hybrid supercapacitor material from nickel-manganese oxides/MWCNT/PEDOT nanocomposite. Nano, 5(3), 143-148. https://doi.org/10.1142/S1793292010002049

A novel ternary nanocomposite of nickel-manganese oxides/multi-walled carbon nanotubes (NMO/MWCNTs) coated with poly (3,4-ethylenedioxythiophene) (PEDOT) was prepared by chemical oxidation method. The filling of NMO particles inside MWCNTs and the un... Read More about Highly efficient hybrid supercapacitor material from nickel-manganese oxides/MWCNT/PEDOT nanocomposite.

A review on carbon nanotubes in an environmental protection and green engineering perspective (2010)
Journal Article
Ong, Y. T., Ahmad, A. L., Zein, S. H. S., & Tan, S. H. (2010). A review on carbon nanotubes in an environmental protection and green engineering perspective. Brazilian journal of chemical Engineering, 27(2), 227-242. https://doi.org/10.1590/S0104-66322010000200002

Recent developments in nanotechnologies have helped to benchmark carbon nanotubes (CNTs) as one of the most studied nanomaterials. By taking advantages of CNTs extraordinary physical, chemical and electronic properties, a wide variety of applications... Read More about A review on carbon nanotubes in an environmental protection and green engineering perspective.

Calcium phosphate-based composites as injectable bone substitute materials (2010)
Journal Article
Low, K. L., Tan, S. H., Zein, S. H. S., Roether, J. A., Mouriño, V., & Boccaccini, A. R. (2010). Calcium phosphate-based composites as injectable bone substitute materials. Journal of biomedical materials research. Part B, Applied biomaterials, 94(1), 273-286. https://doi.org/10.1002/jbm.b.31619

A major weakness of current orthopedic implant materials, for instance sintered hydroxyapatite (HA), is that they exist as a hardened form, requiring the surgeon to fit the surgical site around an implant to the desired shape. This can cause an incre... Read More about Calcium phosphate-based composites as injectable bone substitute materials.

Preparation and properties of perovskite-dispersed titania membranes (2010)
Journal Article
Sani, N. A., Ahmad, A. L., & Zein, S. H. (2010). Preparation and properties of perovskite-dispersed titania membranes. Journal of applied sciences (Asian Network for Scientific Information), 10(12), 1097-1103. https://doi.org/10.3923/jas.2010.1097.1103

Defect-free SrCo 0 8 Fe 0 2 0 3 perovskite-dispersed titania (perovskite-titania) membrane was successfully prepared by sol-gel method combined with wet impregnation process. In this experiment, titania membrane was immersed in a perovskite solution,... Read More about Preparation and properties of perovskite-dispersed titania membranes.

MnO2-filled multiwalled carbon nanotube/polyaniline nanocomposites with enhanced interfacial interaction and electronic propertiesMnO2-filled multiwalled carbon nanotube/polyaniline nanocomposites with enhanced interfacial interaction and electronic properties (2009)
Journal Article
Razak, S. I. A., Ahmad, A. L., Zein, S. H. S., & Boccaccini, A. R. (2009). MnO2-filled multiwalled carbon nanotube/polyaniline nanocomposites with enhanced interfacial interaction and electronic propertiesMnO2-filled multiwalled carbon nanotube/polyaniline nanocomposites with enhanced interfacial interaction and electronic properties. Scripta materialia, 61(6), 592-595. https://doi.org/10.1016/j.scriptamat.2009.05.030

This paper reports the synthesis and characterization of new ternary nanocomposites combining polyaniline (PANI), multiwalled carbon nanotubes (MWCNTs) and manganese dioxide (MnO2). MnO2 was successfully incorporated within the MWCNTs. In situ polyme... Read More about MnO2-filled multiwalled carbon nanotube/polyaniline nanocomposites with enhanced interfacial interaction and electronic propertiesMnO2-filled multiwalled carbon nanotube/polyaniline nanocomposites with enhanced interfacial interaction and electronic properties.

Effect of multi-walled carbon nanotubes on mechanical properties of feldspar filled polypropylene composites (2008)
Journal Article
Ansari, M. N., Ismail, H., & Zein, S. H. (2009). Effect of multi-walled carbon nanotubes on mechanical properties of feldspar filled polypropylene composites. Journal of Reinforced Plastics and Composites, 28(20), 2473-2485. https://doi.org/10.1177/0731684408092377

In this study, the effect of multi-walled carbon nanotube (MWCNT) reinforcement on mechanical and morphological properties of MWCNT reinforced feldspar/polypropylene composites was investigated. The composites were compounded in a Polydrive Thermo Ha... Read More about Effect of multi-walled carbon nanotubes on mechanical properties of feldspar filled polypropylene composites.

Synthesis and characterization of TiO2 coated multiwalled carbon nanotubes using a sol gel method (2008)
Journal Article
Sharif Zein, S. H., & Boccaccini, A. R. (2008). Synthesis and characterization of TiO2 coated multiwalled carbon nanotubes using a sol gel method. Industrial & engineering chemistry research, 47(17), 6598-6606. https://doi.org/10.1021/ie701770q

A considerable improvement in the quality of TiO 2 coatings on multiwalled carbon nanotubes (MWNTs) was obtained by introducing a three-step purification and functionalization process which combines oxidation in air followed by sulfuric acid refluxe... Read More about Synthesis and characterization of TiO2 coated multiwalled carbon nanotubes using a sol gel method.

The effect of reduction temperature on Co-Mo/Al2O3catalysts for carbon nanotubes formation (2007)
Journal Article
Chai, S. P., Zein, S. H. S., & Mohamed, A. R. (2007). The effect of reduction temperature on Co-Mo/Al2O3catalysts for carbon nanotubes formation. Applied catalysis. A, General, 326(2), 173-179. https://doi.org/10.1016/j.apcata.2007.04.020

Catalyst reduction temperature was observed to affect the yield and diameter uniformity of carbon nanotubes (CNTs) produced on Co-Mo/Al 2 O 3 catalysts. The results show that on the whole, the reduced catalysts gave higher carbon yield. The CNTs obta... Read More about The effect of reduction temperature on Co-Mo/Al2O3catalysts for carbon nanotubes formation.

Synthesis of manganese oxide/carbon nanotube nanocomposites using wet chemical method (2007)
Journal Article
Zein, S. H. S., Yeoh, L. C., Chai, S. P., Mohamed, A. R., & Mahayuddin, M. E. M. (2007). Synthesis of manganese oxide/carbon nanotube nanocomposites using wet chemical method. Journal of Materials Processing Technology, 190(1-3), 402-405. https://doi.org/10.1016/j.jmatprotec.2007.03.104

Novel material with peculiar properties can be obtained by introducing foreign materials into the inner cavity of carbon nanotubes. It has been suggested that the materials encapsulated into the hollow regions of carbon nanotubes could result in a si... Read More about Synthesis of manganese oxide/carbon nanotube nanocomposites using wet chemical method.

Synthesizing carbon nanotubes and carbon nanofibers over supported-nickel oxide catalysts via catalytic decomposition of methane (2007)
Journal Article
Chai, S. P., Zein, S. H. S., & Mohamed, A. R. (2007). Synthesizing carbon nanotubes and carbon nanofibers over supported-nickel oxide catalysts via catalytic decomposition of methane. Diamond and related materials, 16(8), 1656-1664. https://doi.org/10.1016/j.diamond.2007.02.011

Supported-NiO catalysts were tested in the synthesis of carbon nanotubes and carbon nanofibers by catalytic decomposition of methane at 550 °C and 700 °C. Catalytic activity was characterized by the conversion levels of methane and the amount of carb... Read More about Synthesizing carbon nanotubes and carbon nanofibers over supported-nickel oxide catalysts via catalytic decomposition of methane.

Study of hydrogen storage by carbonaceous material at room temperature (2007)
Journal Article
Hassan, N. H. A., Mohamed, A. R., & Zein, S. H. S. (2007). Study of hydrogen storage by carbonaceous material at room temperature. Diamond and related materials, 16(8), 1517-1523. https://doi.org/10.1016/j.diamond.2006.12.042

Recently, many studies have been reported about a variety of carbon materials in adsorbing hydrogen. Regarding that, hydrogen adsorption in different carbonaceous materials was investigated at room temperature, 298 K and three different pressures whi... Read More about Study of hydrogen storage by carbonaceous material at room temperature.

Production of High Purity Multi-Walled Carbon Nanotubes from Catalytic Decomposition of Methane (2006)
Journal Article
Hong, K. B., Ismail, A. A. B., Mahayuddin, M. E. B. M., Mohamed, A. R., & Zein, S. H. S. (2006). Production of High Purity Multi-Walled Carbon Nanotubes from Catalytic Decomposition of Methane. Journal of natural gas chemistry / Chengdu Institute of Organic Chemistry, the Chinese Academy of Sciences, 15(4), 266-270. https://doi.org/10.1016/S1003-9953%2807%2960004-8

Acid-based purification process of multi-walled carbon nanotubes (MWNTs) produced via catalytic decomposition of methane with NiO/TiO 2 as a catalyst is described. By combining the oxidation in air and the acid refluxes, the impurities, such as amorp... Read More about Production of High Purity Multi-Walled Carbon Nanotubes from Catalytic Decomposition of Methane.

COx-Free Hydrogen and Carbon Nanofibers Produced from Direct Decomposition of Methane on Nickel-Based Catalysts (2006)
Journal Article
Chai, S. P., Zein, S. H. S., & Mohamed, A. R. (2006). COx-Free Hydrogen and Carbon Nanofibers Produced from Direct Decomposition of Methane on Nickel-Based Catalysts. Journal of natural gas chemistry / Chengdu Institute of Organic Chemistry, the Chinese Academy of Sciences, 15(4), 253-258. https://doi.org/10.1016/S1003-9953%2807%2960002-4

Direct decomposition of methane was carried out using a fixed-bed reactor at 700 °C for the production of CO x -free hydrogen and carbon nanofibers. The catalytic performance of NiO-M/SiO 2 catalysts (where M=AgO, CoO, CuO, FeO, MnO x and MoO) in met... Read More about COx-Free Hydrogen and Carbon Nanofibers Produced from Direct Decomposition of Methane on Nickel-Based Catalysts.

Moderate temperature synthesis of single-walled carbon nanotubes on alumina supported nickel oxide catalyst (2006)
Journal Article
Chai, S. P., Zein, S. H. S., & Mohamed, A. R. (2007). Moderate temperature synthesis of single-walled carbon nanotubes on alumina supported nickel oxide catalyst. Materials letters, 61(16), 3519-3521. https://doi.org/10.1016/j.matlet.2006.11.108

A simple nickel oxide catalyst has been developed in synthesizing single-walled carbon nanotubes (SWNTs) at moderate temperature. The catalyst used in the experiment was without a preceding reduction in hydrogen flow. The synthesis of SWNTs was perfo... Read More about Moderate temperature synthesis of single-walled carbon nanotubes on alumina supported nickel oxide catalyst.

Formation of Y-junction carbon nanotubes by catalytic CVD of methane (2006)
Journal Article
Chai, S. P., Zein, S. H. S., & Mohamed, A. R. (2006). Formation of Y-junction carbon nanotubes by catalytic CVD of methane. Solid state communications, 140(5), 248-250. https://doi.org/10.1016/j.ssc.2006.08.006

Y-junction carbon nanotubes were grown by catalytic CVD of methane at 700 {ring operator} C on NiO-CuO-MoO(7:2:1) (w/w/w)/SiO 2 catalyst. For comparison, NiO-CuO(8:2) (w/w)/SiO 2 and NiO-MoO(8:2) (w/w)/SiO 2 catalysts were tested for carbon nanotube... Read More about Formation of Y-junction carbon nanotubes by catalytic CVD of methane.

Preparation of carbon nanotubes over cobalt-containing catalysts via catalytic decomposition of methane (2006)
Journal Article
Chai, S. P., Zein, S. H. S., & Mohamed, A. R. (2006). Preparation of carbon nanotubes over cobalt-containing catalysts via catalytic decomposition of methane. Chemical Physics Letters, 426(4-6), 345-350. https://doi.org/10.1016/j.cplett.2006.05.026

Decomposition of methane into carbon nanotubes over CoO catalysts supported on various catalyst supports at 550 °C and 700 °C was investigated. The effect of catalyst promoters on the supported CoO catalysts at 700 °C was also examined. Electron micr... Read More about Preparation of carbon nanotubes over cobalt-containing catalysts via catalytic decomposition of methane.

Screening of metal oxide catalysts for carbon nanotubes and hydrogen production via catalytic decomposition of methane (2006)
Journal Article
Zein, S. H., Mohamed, A. R., & Chai, S. P. (2006). Screening of metal oxide catalysts for carbon nanotubes and hydrogen production via catalytic decomposition of methane. Studies in surface science and catalysis, 159, 725-728. https://doi.org/10.1016/S0167-2991%2806%2981699-X

A number of catalysts prepared from transition metals such as copper (Cu), iron (Fe), nickel (Ni), cobalt (Co) and manganese (Mn) on TiO 2 support were tested for the decomposition of methane into hydrogen and carbon. These catalysts were used in the... Read More about Screening of metal oxide catalysts for carbon nanotubes and hydrogen production via catalytic decomposition of methane.

Mn/Ni/TiO2 catalyst for the production of hydrogen and carbon nanotubes from methane decomposition (2004)
Journal Article
Zein, S. H. S., & Mohamed, A. R. (2004). Mn/Ni/TiO2 catalyst for the production of hydrogen and carbon nanotubes from methane decomposition. Energy and Fuels, 18(5), 1336-1345. https://doi.org/10.1021/ef0340864

The decomposition of methane into carbon and hydrogen over 15 mol % MnO x /20 mol %NiO/ TiO 2 catalysts was investigated. The effects of catalyst synthesis and pretreatment of 15 mol % MnO x /20 mol % NiO/TiO 2 catalysts for the activity and morpho... Read More about Mn/Ni/TiO2 catalyst for the production of hydrogen and carbon nanotubes from methane decomposition.

Kinetic studies on catalytic decomposition of methane to hydrogen and carbon over Ni/TiO2catalyst (2004)
Journal Article
Zein, S. H. S., Mohamed, A. R., & Sai, P. S. T. (2004). Kinetic studies on catalytic decomposition of methane to hydrogen and carbon over Ni/TiO2catalyst. Industrial & engineering chemistry research, 43(16), 4864-4870. https://doi.org/10.1021/ie034208f

Experiments were conducted in a fixed-bed catalytic reactor to study the decomposition of methane to hydrogen and carbon over 13 wt % Ni/TiO 2 -based catalyst. The variables include the volumetric flow rate of reactant (relative partial pressures of... Read More about Kinetic studies on catalytic decomposition of methane to hydrogen and carbon over Ni/TiO2catalyst.