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

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...

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Main Authors:	Waleed M. Omymen, Jelena R. Rogan, Branimir Z. JugoviÄ, Milica M. GvozdenoviÄ, Branimir N. Grgur
Format:	Article
Language:	English
Published:	Elsevier 2017-12-01
Series:	Journal of Saudi Chemical Society
Online Access:	http://www.sciencedirect.com/science/article/pii/S1319610317300686

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spelling	doaj-44c10f03392f4dd18197e414d454a9be2020-11-24T23:19:53ZengElsevierJournal of Saudi Chemical Society1319-61032017-12-01218990997Photo-assisted electrochemical oxidation of the urea onto TiO2-nanotubes modified by hematiteWaleed M. Omymen0Jelena R. Rogan1Branimir Z. JugoviÄ2Milica M. GvozdenoviÄ3Branimir N. Grgur4Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11020 Belgrade, SerbiaFaculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11020 Belgrade, SerbiaInstitute of Technical Sciences of the Serbian Academy of Sciences and Arts, Knez Mihailova 35/IV, 11000 Belgrade, SerbiaFaculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11020 Belgrade, SerbiaFaculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11020 Belgrade, Serbia; Corresponding author at: Faculty of Technology and Metallurgy, University of Belgrade, Department of Physical Chemistry and Electrochemistry, Karnegijeva 4, 11020 Belgrade, Serbia. Fax: +381 113303681.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, SILARhttp://www.sciencedirect.com/science/article/pii/S1319610317300686
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Waleed M. Omymen Jelena R. Rogan Branimir Z. JugoviÄ Milica M. GvozdenoviÄ Branimir N. Grgur
spellingShingle	Waleed M. Omymen Jelena R. Rogan Branimir Z. JugoviÄ Milica M. GvozdenoviÄ Branimir N. Grgur Photo-assisted electrochemical oxidation of the urea onto TiO2-nanotubes modified by hematite Journal of Saudi Chemical Society
author_facet	Waleed M. Omymen Jelena R. Rogan Branimir Z. JugoviÄ Milica M. GvozdenoviÄ Branimir N. Grgur
author_sort	Waleed M. Omymen
title	Photo-assisted electrochemical oxidation of the urea onto TiO2-nanotubes modified by hematite
title_short	Photo-assisted electrochemical oxidation of the urea onto TiO2-nanotubes modified by hematite
title_full	Photo-assisted electrochemical oxidation of the urea onto TiO2-nanotubes modified by hematite
title_fullStr	Photo-assisted electrochemical oxidation of the urea onto TiO2-nanotubes modified by hematite
title_full_unstemmed	Photo-assisted electrochemical oxidation of the urea onto TiO2-nanotubes modified by hematite
title_sort	photo-assisted electrochemical oxidation of the urea onto tio2-nanotubes modified by hematite
publisher	Elsevier
series	Journal of Saudi Chemical Society
issn	1319-6103
publishDate	2017-12-01
description	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
url	http://www.sciencedirect.com/science/article/pii/S1319610317300686
work_keys_str_mv	AT waleedmomymen photoassistedelectrochemicaloxidationoftheureaontotio2nanotubesmodifiedbyhematite AT jelenarrogan photoassistedelectrochemicaloxidationoftheureaontotio2nanotubesmodifiedbyhematite AT branimirzjugovia photoassistedelectrochemicaloxidationoftheureaontotio2nanotubesmodifiedbyhematite AT milicamgvozdenovia photoassistedelectrochemicaloxidationoftheureaontotio2nanotubesmodifiedbyhematite AT branimirngrgur photoassistedelectrochemicaloxidationoftheureaontotio2nanotubesmodifiedbyhematite
_version_	1725576341870346240

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

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