Study of pyridine-mediated electrochemical reduction of CO2 to methanol at high CO2 pressure (2016)
Journal Article
Haywood, S. K., Rybchenko, S. I., Touhami, D., & Wadhawan, J. D. (2016). Study of pyridine-mediated electrochemical reduction of CO2 to methanol at high CO2 pressure. ChemSusChem, 9(13), 1660-1669. https://doi.org/10.1002/cssc.201600267

© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim The recently proposed highly efficient route of pyridine-catalyzed CO 2 reduction to methanol was explored on platinum electrodes at high CO 2 pressure. At 55 bar (5.5 MPa) of CO 2 , the bulk elec... Read More about Study of pyridine-mediated electrochemical reduction of CO2 to methanol at high CO2 pressure.

A route to unbuffered pH monitoring: A novel electrochemical approach (2016)
Journal Article
Dai, C., Chan, C. I., Barrow, W., Smith, A., Song, P., Potier, F., …Lawrence, N. S. (2016). A route to unbuffered pH monitoring: A novel electrochemical approach. Electrochimica acta, 190, 879-886. https://doi.org/10.1016/j.electacta.2016.01.004

Carbon paste electrodes modified by various dihydroxyquinone derivatives are investigated using both cyclic voltammetry and square wave voltammetry in order to ascertain suitability as voltammetric pH sensors. These electrodes show a Nernstian respon... Read More about A route to unbuffered pH monitoring: A novel electrochemical approach.

Mg/Ca ratios in freshwater microbial carbonates: Thermodynamic, kinetic and vital effects (2014)
Journal Article
Saunders, P., Rogerson, M., Wadhawan, J., Greenway, G., & Pedley, H. (2014). Mg/Ca ratios in freshwater microbial carbonates: Thermodynamic, kinetic and vital effects. Geochimica et cosmochimica acta, 147, 107-118. https://doi.org/10.1016/j.gca.2014.10.014

The ratio of magnesium to calcium (Mg/Ca) in carbonate minerals in an abiotic setting is conventionally assumed to be predominantly controlled by (Mg/Ca)solution and a temperature dependant partition coefficient. This temperature dependence suggests... Read More about Mg/Ca ratios in freshwater microbial carbonates: Thermodynamic, kinetic and vital effects.

Linking mineralisation process and sedimentary product in terrestrial carbonates using a solution thermodynamic approach (2014)
Journal Article
Rogerson, M., Pedley, H. M., Kelham, A., & Wadhawan, J. D. (2014). Linking mineralisation process and sedimentary product in terrestrial carbonates using a solution thermodynamic approach. Earth surface dynamics European Geosciences Union, 2(1), 197-216. https://doi.org/10.5194/esurf-2-197-2014

Determining the processes which generate terrestrial carbonate deposits (tufas, travertines and to a lesser extent associated chemical sediments such as calcretes and speleothems) is a long-standing problem. Precipitation of mineral products from sol... Read More about Linking mineralisation process and sedimentary product in terrestrial carbonates using a solution thermodynamic approach.

Empowering the smart grid: Can redox batteries be matched to renewable energy systems for energy storage? (2013)
Journal Article
Halls, J. E., Hawthornthwaite, A., Hepworth, R. J., Roberts, N. A., Wright, K. J., Zhou, Y., …Wadhawan, J. D. (2013). Empowering the smart grid: Can redox batteries be matched to renewable energy systems for energy storage?. Energy & environmental science, 6(3), 1026-1041. https://doi.org/10.1039/c3ee23708g

The charging of an undivided cerium-zinc redox battery by various current waveforms some of which mimic the output of renewable energy (solar, wind, tidal, biofuel burning) to electricity transducers is considered in this work, where the battery oper... Read More about Empowering the smart grid: Can redox batteries be matched to renewable energy systems for energy storage?.

Photogalvanic cells based on lyotropic nanosystems: towards the use of liquid nanotechnology for personalised energy sources (2012)
Journal Article
Halls, J. E., & Wadhawan, J. D. (2012). Photogalvanic cells based on lyotropic nanosystems: towards the use of liquid nanotechnology for personalised energy sources. Energy & environmental science, 5(4), 6541-6551. https://doi.org/10.1039/c2ee03169h

A lightweight, autonomous and practical, proof-of-concept electrical power source is developed within this work. It comprises a photoredox-active material embedded within the non-ionic surfactant subphase, with a second redox reagent present within t... Read More about Photogalvanic cells based on lyotropic nanosystems: towards the use of liquid nanotechnology for personalised energy sources.

Wastewater as a photoelectrochemical fuel source: light-to-electrical energy conversion with organochloride remediation (2012)
Journal Article
Halls, J. E., Johnson, T., Altalhi, A. A., & Wadhawan, J. D. (2012). Wastewater as a photoelectrochemical fuel source: light-to-electrical energy conversion with organochloride remediation. Electrochemistry communications, 22, 4-7. https://doi.org/10.1016/j.elecom.2012.04.024

A photogalvanic cell that employs 2,4-dichlorophenol as a fuel source, an N-substituted phenothiazine as light harvester, and sacrificial zinc anode is presented, and shown to afford a ca. 4% light-to-electrical power conversion efficiency in violet... Read More about Wastewater as a photoelectrochemical fuel source: light-to-electrical energy conversion with organochloride remediation.

Voltammetry within structured liquid nanosystems: towards the design of a flexible, three-dimensional framework for artificial photosystems (2012)
Journal Article
Halls, J. E., Wright, K. J., Pickersgill, J. E., Smith, J. P., Altalhi, A. A., Bourne, R. W., …Wadhawan, J. (2012). Voltammetry within structured liquid nanosystems: towards the design of a flexible, three-dimensional framework for artificial photosystems. Electrochimica acta, 70, 215-227. https://doi.org/10.1016/j.electacta.2012.03.052

Normal lyotropic liquid crystals (in the lamellar or hexagonal phases) are investigated as a route to afford a structured, three-dimensional, quasi-biphasic framework within which electron transfer cascades may be initiated voltammetrically. For mode... Read More about Voltammetry within structured liquid nanosystems: towards the design of a flexible, three-dimensional framework for artificial photosystems.

Electrochemistry of organometallic lyotropic chromonic liquid crystals (2012)
Journal Article
Halls, J. E., Bourne, R. W., Wright, K. J., Partington, L. I., Tamba, M. G., Zhou, Y., …Wadhawan, J. D. (2012). Electrochemistry of organometallic lyotropic chromonic liquid crystals. Electrochemistry communications, 19(1), 50-54. https://doi.org/10.1016/j.elecom.2012.02.032

Two aqueous lyotropic chromonic liquid crystals made from nickel(II) or copper(II) phthalocyananine tetrasulfonic acid tetrasodium salt are prepared with characterisation through optical polarising microscopy, X-ray diffraction and conductivity. Thes... Read More about Electrochemistry of organometallic lyotropic chromonic liquid crystals.

Concentration-dependent diffusion coefficients of tert-butylferrocene within dodecyltrimethylammonium chloride/brine liquid crystals (2012)
Journal Article
Halls, J. E., Altalhi, A. A., De Abreu, F. C., Goulart, M. O., & Wadhawan, J. D. (2012). Concentration-dependent diffusion coefficients of tert-butylferrocene within dodecyltrimethylammonium chloride/brine liquid crystals. Electrochemistry communications, 17, 41-44. https://doi.org/10.1016/j.elecom.2012.01.013

The title lyotropic liquid crystal is examined as a framework to investigate long-range charge transfer, using tert-butylferrocene (tBuFc) as model hydrophobic system. It is found that the apparent one-dimensional diffusion coefficient depends on the... Read More about Concentration-dependent diffusion coefficients of tert-butylferrocene within dodecyltrimethylammonium chloride/brine liquid crystals.