Photo-assisted electrochemical oxidation of the urea onto TiO2-nanotubes modified by hematite

Autor: Waleed M. Omymen, Jelena R. Rogan, Branimir Z. JugoviÄ, Milica M. GvozdenoviÄ, Branimir N. Grgur
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Journal of Saudi Chemical Society, Vol 21, Iss 8, Pp 990-997 (2017)
Druh dokumentu: article
ISSN: 1319-6103
DOI: 10.1016/j.jscs.2017.05.010
Popis: The electrochemical oxidation of the urea in near neutral pH is investigated on platinum electrode. It is shown that oxidation reaction is practically inhibited up to the potentials of â¼0.9Â V. The same reaction is investigated onto electrochemically obtained titanium dioxide nanotubes modified by hematite using facile, low-cost successive ion layer adsorption and reaction (SILAR) method. It is shown that such system possesses electrocatalytic activity at very low potentials, and activity can be further improved by the illumination of the electrode in the photo-assisted reaction. The possible application of the photoactive anode is considered in the application of urea based water electrolysis and urea based fuel cell. Keywords: Photoelectrochemical cell, Water electrolysis, Fuel cell, SILAR
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