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Photoelectrochemical and Spectroscopic Studies of Colloidal Nano-Particles of Mixed TiO<sub>2</sub>/V<sub>2</sub>O<sub>5</sub> Metal-Oxide Semiconductors
Department of Science, Mathematics, and Informatics, School of Art and Science Indiana University Kokomo, Kokomo, USA
Department of Science, Mathematics, and Informatics, School of Art and Science Indiana University Kokomo, Kokomo, USA
Rose Hulman Institute of Technology, Terre Haute, USA
Rose Hulman Institute of Technology, Terre Haute, USA
Rose Hulman Institute of Technology, Terre Haute, USA
- 1 Department of Science, Mathematics, and Informatics, School of Art and Science Indiana University Kokomo, Kokomo, USA
- 2 Department of Science, Mathematics, and Informatics, School of Art and Science Indiana University Kokomo, Kokomo, USA
- 3 Rose Hulman Institute of Technology, Terre Haute, USA
- 4 Rose Hulman Institute of Technology, Terre Haute, USA
- 5 Rose Hulman Institute of Technology, Terre Haute, USA
Materials Sciences and Applications·Volume 03 (2012)·Pages 265–271·Published 22 May 2012·DOI10.4236/msa.2012.35039
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Abstract
Due to its importance in hydrogen production during the photolysis process of aqueous suspensions process, mixed TiO 2 /V 2 O 5 metal-oxide semiconductors were prepared and subjected to crystal structure investigation using X-ray technique. The photoelectrochemical behavior of these TiO 2 /V 2 O 5 was investigated by photolysis of aqueous suspensions of these oxides containing [Fe(CN) 6 ] 4- . X-ray diffraction analysis indicated that the TiO 2 crystallites grow in the (1 0 1) direction, while The V 2 O 5 crystallites seem to be growing in the (4 2 0) direction, with increasing concentration of V 2 O 5 . Photolysis studies show that photochemical activities that maintained the [Fe(CN) 6 ] 4/ [Fe(CN) 6 ] 3- redox reversibility increased by increasing V 2 O 5 up to 50% and then decreased at greater percentages. Aqueous nano systems used in these studies retained their stability as indicated by the reproducibility of their photo-catalytic activities.
KeywordsTiO<sub>2</sub>/V<sub>2</sub>O<sub>5</sub>NanoparticlesSemiconductorsPhotolysisHydrogen Production
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