Title: Effect of TiO₂/WO₃/C photoanode composition on the photocurrent of all-solid photoelectrochemical cells

Authors: Jenia Georgieva, Sotiris Sotiropoulos, Stephan Armyanov, Ioannis Poulios

Addresses: Rostislaw Kaischew Institute of Physical Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria. ' Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece. ' Rostislaw Kaischew Institute of Physical Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria. ' Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece

Abstract: High surface area electrodes made of TiO₂+WO₃+C powder coatings have been prepared and tested as photoanodes in mini-photoelectrochemical cells based on Nafion® electrolyte-impregnated microporous membranes. Photovoltammetry and constant potential photoamperometry, carried out at the (TiO₂+WO₃+C)/Nafion® photoanode of an all-solid device in a gas stream saturated with water vapour or with the vapours of methanol aqueous solution under UV and visible (Vis) light illumination, results in well-defined photoelectrochemistry. The effect of TiO₂/WO₃/C photoanode composition on the photocurrent of all-solid photoelectrochemical cells was studied. The possibility of using C+TiO₂+WO₃ powder catalyst as a photoanode in an all-solid photoelectrochemical cell with a polymer electrolyte for air treatment has been demonstrated.

Keywords: titanium dioxide; tungsten oxide; TiO2/WO3/C photoanodes; all-solid photoelectrochemical cells; nanoparticles; nanotechnology; polymer electrolytes; air treatment.

DOI: 10.1504/IJNP.2011.040510

International Journal of Nanoparticles, 2011 Vol.4 No.2/3, pp.216 - 230

Published online: 13 Mar 2015 *

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