Journal
MATERIALS RESEARCH BULLETIN
Volume 45, Issue 2, Pages 135-141Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2009.09.029
Keywords
Oxides; Semiconductors; Chemical synthesis; X-ray diffraction; Catalytic properties
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Funding
- Universidad Autonoma de Nuevo Leon (UANL)
- CONACYT [81546]
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Bismuth vanadate (BiVO4) was synthesized by the co-precipitation method at 200 degrees C. The photocatalytic activity of the oxide was tested for the photodegradation of rhodamine B under visible light it-radiation. The analysis of the total organic carbon showed that the mineralization of rhodamine B over a BiVO4 photocatalyst (similar to 40% after 100 h of irradiation) is feasible. In the same way, a gas chromatography analysis coupled with mass spectroscopy revealed the existence of organic intermediates during the photodegradation process such as ethylbenzene, o-xylene, m-xylene, and phthalic anhydride. The modification of variables such as dispersion pH, amount of dissolved O-2, and irradiation source was studied in order to know the details about the photodegradation mechanism. (C) 2009 Elsevier Ltd. All rights reserved.
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