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Transition metal doped TiO2: physical properties and photocatalytic behaviour

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Title: Transition metal doped TiO2: physical properties and photocatalytic behaviour
Authors: Di Paola, Agatino Browse this author
Ikeda, Shigeru Browse this author →KAKEN DB
Marcì, Giuseppe Browse this author
Ohtani, Bunsho Browse this author →KAKEN DB
Palmisano, Leonardo Browse this author
Issue Date: 2001
Publisher: Hindawi
Journal Title: International journal of photoenergy
Volume: 3
Issue: 4
Start Page: 171
End Page: 176
Publisher DOI: 10.1155/S1110662X01000216
Abstract: Two probe photocatalytic reactions, i.e. ethanoic acid and 4-nitrophenol photooxidation, were carried out in different experimental conditions by using suspensions of transition metal (Co, Cr, Cu, Fe, Mo, V and W) doped polycrystalline TiO2 powders in aqueous systems. A beneficial influence of the presence of metal species was observed only with the samples containing copper and tungsten. In particular, the TiO2/Cu powders showed to be more photoactive of bare TiO2 for the ethanoic acid oxidation while the TiO2/W samples were more efficient for 4-nitrophenol degradation. A tentative interpretation is provided on the basis of the values of the points of zero charge of the powders and of the rate constants of recombination of photogenerated electrons and holes, determined by femtosecond pump-probe diffuse reflectance spectroscopy (PP-DRS).
Type: article
Appears in Collections:触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 大谷 文章

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