All Outputs (62)

Electrochemical Goniometry: Keystone Reactivity at the Three-Phase Boundary (2024)
Journal Article
Varley, T. S., Lawrence, N. S., & Wadhawan, J. D. (online). Electrochemical Goniometry: Keystone Reactivity at the Three-Phase Boundary. Journal of Solid State Electrochemistry, https://doi.org/10.1007/s10008-024-05932-4

Contact angles of liquid, spherical cap droplets immobilised on an electrode surface and bathed by a fluid are important, quantifiable measures of the liquid/fluid interfacial tension. Optical goniometry, even if computer assisted, suffers when the c... Read More about Electrochemical Goniometry: Keystone Reactivity at the Three-Phase Boundary.

Editorial overview: Innovative methods in electrochemistry (2023): Electrochemical techniques: Smart approaches for timely problems (2023)
Journal Article
Wadhawan, J., & Maisonhaute, E. (2024). Editorial overview: Innovative methods in electrochemistry (2023): Electrochemical techniques: Smart approaches for timely problems. Current Opinion in Electrochemistry, 43, Article 101426. https://doi.org/10.1016/j.coelec.2023.101426

Oxidative Dissolution of Lithium and Manganese from Lithium Manganospinel (LiMn 2 O 4 ): Towards Climate-Smart Processes for Critical Metal Recycling (2023)
Journal Article
Ward, R. A., Kocsis, D., & Wadhawan, J. D. (2023). Oxidative Dissolution of Lithium and Manganese from Lithium Manganospinel (LiMn 2 O 4 ): Towards Climate-Smart Processes for Critical Metal Recycling. Energy advances, https://doi.org/10.1039/d2ya00196a

This work reports the oxidative breakdown of the LiMn2O4 structure using alkaline hypochlorite, as a method for recovering both lithium and manganese species. The heterogeneous dissolution rate for this process is monitored through the formation of t... Read More about Oxidative Dissolution of Lithium and Manganese from Lithium Manganospinel (LiMn 2 O 4 ): Towards Climate-Smart Processes for Critical Metal Recycling.

Empowering clean water whilst safeguarding water distribution pipeline integrity: Towards manganese- and iron-free lime hydrate for water treatment (2023)
Journal Article
Wadhawan, J. D., Kocsis, D., Meyer, C., Ward, R., Thompson, M., Prior, T. J., Kelly, S. M., & Lawrence, N. (2023). Empowering clean water whilst safeguarding water distribution pipeline integrity: Towards manganese- and iron-free lime hydrate for water treatment. Environmental Science: Water Research & Technology, https://doi.org/10.1039/d2ew00109h

Hydrated limes are amongst the most economically valuable alkalis used by the water industry for the treatment of potable water. They are typically manufactured from the thermal decomposition of high purity limestones. However, the latter contain bot... Read More about Empowering clean water whilst safeguarding water distribution pipeline integrity: Towards manganese- and iron-free lime hydrate for water treatment.

Nafion® Coated Electropolymerised Flavanone-based pH Sensor (2022)
Journal Article
Miranda, M., Carvetta, C., Sisodia, N., Shirley, L., Day, C., McGuinness, K., …Lawrence, N. S. (in press). Nafion® Coated Electropolymerised Flavanone-based pH Sensor. Electroanalysis, https://doi.org/10.1002/elan.202100652

This work summarizes the electrochemical response of flavanone carbon composite electrodes in comparison with Nafion®-coated flavanone carbon composite electrodes, for use as voltammetric pH sensors in both buffered and low-buffered media. Square wav... Read More about Nafion® Coated Electropolymerised Flavanone-based pH Sensor.

Asymmetric and Anharmonic Electrode Kinetics: Evaluation of a Model for Electron Transfer with Concerted Rupture of Weak, Inner Shell Interactions (2021)
Journal Article
Lawrence, N. S., Schöllhorn, B., & Wadhawan, J. D. (2021). Asymmetric and Anharmonic Electrode Kinetics: Evaluation of a Model for Electron Transfer with Concerted Rupture of Weak, Inner Shell Interactions. ChemistrySelect, 6(46), 13331-13335. https://doi.org/10.1002/slct.202103526

A surface-integrated form of the widely used (anharmonic) Lennard-Jones 12–6 interaction potential, the Lennard-Jones 9–3 potential, is used to develop a quadratic activation/driving force relationship that gives rise to asymmetric Tafel plots for el... Read More about Asymmetric and Anharmonic Electrode Kinetics: Evaluation of a Model for Electron Transfer with Concerted Rupture of Weak, Inner Shell Interactions.

In situ recalibration of ion selective electrodes (2021)
Journal Article
Wadhawan, J. D., Sisodia, N., Lawrence, N. S., & McGuinness, K. L. (2022). In situ recalibration of ion selective electrodes. Sensors and Diagnostics, 1(1), 134-138. https://doi.org/10.1039/d1sd00003a

Reference electrode drift resulting from the exchange of ions at the solution/reference electrode chamber interface is the number one reason why ion selective electrodes and pH sensors in particular require recalibration, costing companies up to 70%... Read More about In situ recalibration of ion selective electrodes.

Unravelling the Occurrence of Mediator-Blood Protein Interactions via the Redox Catalysis of the Physiological Gasotransmitter Hydrogen Sulfide (2021)
Journal Article
Ward, H. J., Ward, R. A., Lawrence, N. S., & Wadhawan, J. D. (2021). Unravelling the Occurrence of Mediator-Blood Protein Interactions via the Redox Catalysis of the Physiological Gasotransmitter Hydrogen Sulfide. ChemistrySelect, 6(37), 10059-10062. https://doi.org/10.1002/slct.202102974

Ferrocenemethanol is employed as an aqueous, homogeneous redox mediator for hydrogen sulfide. The reaction is seen to follow an EC’ mechanism over the range 6≤pH≤9, with bisulfide reacting four times more rapidly than hydrogen sulfide. In the presenc... Read More about Unravelling the Occurrence of Mediator-Blood Protein Interactions via the Redox Catalysis of the Physiological Gasotransmitter Hydrogen Sulfide.

Interaction of temperature, salinity and extracellular polymeric substances controls trace element incorporation into tufa calcite (2021)
Journal Article
Rogerson, M., Pedley, H. M., Greenway, G. M., & Wadhawan, J. D. (in press). Interaction of temperature, salinity and extracellular polymeric substances controls trace element incorporation into tufa calcite. The Depositional Record, https://doi.org/10.1002/dep2.160

The influence of extracellular polymeric substances on carbonate mineral growth in natural settings remains one of the most poorly understood contributors to the growth of non-marine carbonate sediments. The influences of these materials are complica... Read More about Interaction of temperature, salinity and extracellular polymeric substances controls trace element incorporation into tufa calcite.

Decorating BODIPY with electron-withdrawing NO group: spectroelectrochemical consequences and computational investigation (2021)
Journal Article
Silva, T. L., Nascimento, T. A. D., Almeida, A. K. . A. . D., Melo, S. M. . G., Silva, J. C. . S. . D., Xavier, J. A., …Goulart, M. O. (2021). Decorating BODIPY with electron-withdrawing NO group: spectroelectrochemical consequences and computational investigation. ChemElectroChem, 8(15), 2921-2934. https://doi.org/10.1002/celc.202100609

4,4-difluoro-5,7-dimethyl-4-bora-3a,4a-diaza-s-indacene (BODIPY) and derivatives are an outstanding class of fluorescent dyes. Herein, we report on the introduction of a nitrosyl moiety into the BODIPY structure and its dramatic effect on the observe... Read More about Decorating BODIPY with electron-withdrawing NO group: spectroelectrochemical consequences and computational investigation.

Electrochemically Induced Mesomorphism Switching in a Chlorpromazine Hydrochloride Lyotropic Liquid Crystal (2021)
Journal Article
Crapnell, R. D., Alhasan, H. S., Partington, L. I., Zhou, Y., Ahmed, Z., Altalhi, A. A., Varley, T. S., Alahmadi, N., Mehl, G. H., Kelly, S. M., Lawrence, N. S., Marken, F., & Wadhawan, J. D. (2021). Electrochemically Induced Mesomorphism Switching in a Chlorpromazine Hydrochloride Lyotropic Liquid Crystal. ACS Omega, 6(7), 4630-4640. https://doi.org/10.1021/acsomega.0c05284

The discovery of electrochemical switching of the Lα phase of chlorpromazine hydrochloride in water is reported. The phase is characterized using polarizing microscopy, X-ray scattering, rheological measurements, and microelectrode voltammetry. Fast,... Read More about Electrochemically Induced Mesomorphism Switching in a Chlorpromazine Hydrochloride Lyotropic Liquid Crystal.

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., Richards, D. I., Kelly, S. M., Lawrence, N. S., & 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.

Intra- and Inter-molecular Sulf- hydryl Hydrogen Bonding: Facilitating Proton Transfer Events for Determination of pH in Sea Water (2020)
Journal Article
Sisodia, N., Miranda, M., McGuinness, K. L., Wadhawan, J. D., & Lawrence, N. S. (in press). Intra- and Inter-molecular Sulf- hydryl Hydrogen Bonding: Facilitating Proton Transfer Events for Determination of pH in Sea Water. Electroanalysis, https://doi.org/10.1002/elan.202060332

© 2020 Wiley-VCH GmbH This work presents the electrochemical response of a 2-(methylthio)phenol glassy carbon based electrode for a promising voltammetric pH sensor in both buffered and low-buffered solutions. Electropolymerization of the redox speci... Read More about Intra- and Inter-molecular Sulf- hydryl Hydrogen Bonding: Facilitating Proton Transfer Events for Determination of pH in Sea Water.

Evaporative Mass Loss Measurement as a Quality Control Tool for Quality Assurance in the Manufacture of Inks Suitable for High Speed (≥60 m/min) Printing (2020)
Journal Article
Ward, H. J., Ward, H. J., Armstrong-Telfer, T. A., Armstrong-Telfer, T. A., Kelly, S. M., Kelly, S. M., Lawrence, N. S., Lawrence, N. S., Wadhawan, J., & Wadhawan, J. D. (2020). Evaporative Mass Loss Measurement as a Quality Control Tool for Quality Assurance in the Manufacture of Inks Suitable for High Speed (≥60 m/min) Printing. Journal of Electroanalytical Chemistry, 872, Article 114328. https://doi.org/10.1016/j.jelechem.2020.114328

In any manufacturing environment, it is always important to be able to embrace a culture of traceability of any non-conformed product. For the case of ink manufacture, operator confusion, leading to the mixing-up of solvents, or connecting the incorr... Read More about Evaporative Mass Loss Measurement as a Quality Control Tool for Quality Assurance in the Manufacture of Inks Suitable for High Speed (≥60 m/min) Printing.

Regular Solution Theory for Polymer Permeation Transients: A Toolkit for Understanding Experimental Waveshapes (2020)
Journal Article
Wadhawan, J., Craster, B. ;., Lawrence, N., & Kelly, S. M. (2020). Regular Solution Theory for Polymer Permeation Transients: A Toolkit for Understanding Experimental Waveshapes. Langmuir : the ACS journal of surfaces and colloids, 36(18), 5003-5020. https://doi.org/10.1021/acs.langmuir.0c00589

The accurate measurement of permeation is important at the product design stage for a variety of industries as diverse as conveyance methods for oil and gas produced fluids, such as mixtures of carbon dioxide, methane, hydrogen sulfide, water, and hy... Read More about Regular Solution Theory for Polymer Permeation Transients: A Toolkit for Understanding Experimental Waveshapes.

Electrochemical immunoassay for the detection of stress biomarkers (2020)
Journal Article
Abdulsattar, J. O., Greenway, G. M., & Wadhawan, J. D. (2020). Electrochemical immunoassay for the detection of stress biomarkers. Heliyon, 6(3), Article e03558. https://doi.org/10.1016/j.heliyon.2020.e03558

A rapid electrochemical immunoassay method was developed to detect and measure stress biomarkers (cortisol and cortisone) in two biological samples (Zebrafish whole-body and artificial saliva). This methodology utilizes an immunoassay approach taking... Read More about Electrochemical immunoassay for the detection of stress biomarkers.

Multiphase Methods in Organic Electrosynthesis (2019)
Journal Article
Marken, F., & Wadhawan, J. D. (2019). Multiphase Methods in Organic Electrosynthesis. Accounts of chemical research, 52(12), 3325-3338. https://doi.org/10.1021/acs.accounts.9b00480

© 2019 American Chemical Society. ConspectusWith water providing a highly favored solution environment for industrial processes (and in biological processes), it is interesting to develop water-based electrolysis processes for the synthesis and conve... Read More about Multiphase Methods in Organic Electrosynthesis.

Relationship between Surface Mechanical Properties and Foam Stability (2019)
Thesis
Pang, Y. (2019). Relationship between Surface Mechanical Properties and Foam Stability. (Thesis). University of Hull. https://hull-repository.worktribe.com/output/4912429

This thesis is concerned with foam stability and surface mechanical properties (including surface tension and surface rheological properties) of liquid-air interfaces of foams. In particular, the question as to which surface mechanical property (or p... Read More about Relationship between Surface Mechanical Properties and Foam Stability.

Imaging immunoassay in negative: Surface-­‐catalysed chemiluminescence for the detection of pregnancy hormones in artificial saliva (2018)
Journal Article
Wright, K. J., Oiaidha, Z. O., Love, D. P., Aljohani, M., Greenway, G. M., & Wadhawan, J. D. (2018). Imaging immunoassay in negative: Surface-­‐catalysed chemiluminescence for the detection of pregnancy hormones in artificial saliva. New journal of chemistry = Nouveau journal de chimie, 42(23), 18641-18648. https://doi.org/10.1039/c8nj02974a

A novel and rapid (45min), quantitative chemiluminescence-based, surface immunoassay is reported for the quantitative detection of progesterone and œstriol in artificial saliva. The detection limits for these pregnancy hormones are 2.3 and 2.5 pg mL-... Read More about Imaging immunoassay in negative: Surface-­‐catalysed chemiluminescence for the detection of pregnancy hormones in artificial saliva.

Performance of lyotropic liquid crystal-based photoelectrochemical capacitors for solar-to- electrical energy conversion (2018)
Presentation / Conference Contribution
Halls, J. E., Ward, H. J., Althali, A. A., Testut, L., Kocsis, D., Alhassan, H. S., Kelly, S. M., Lawrence, N. S., & Wadhawan, J. D. (2018, November). Performance of lyotropic liquid crystal-based photoelectrochemical capacitors for solar-to- electrical energy conversion. Presented at Sustainable industrial processing summit and exhibition, Rio de Janeiro, Brazil

Regenerative photoelectrochemical capacitors, adapted from a experimental system previously reported (J. E. Halls, J. D. Wadhawan, Energy Environ. Sci., 2012, 5, 6541) and based on the doping of a lamellar lyotropic liquid crystal with visible light... Read More about Performance of lyotropic liquid crystal-based photoelectrochemical capacitors for solar-to- electrical energy conversion.