@article{oai:kyutech.repo.nii.ac.jp:00005310, author = {Kitano, Sho and Murakami, Naoya and 村上, 直也 and Ohno, Teruhisa and 横野, 照尚 and Mitani, Yasunori and 三谷, 康範 and Nosaka, Yoshio and Asakura, Hiroyuki and Teramura, Kentaro and Tanaka, Tsunehiro and Tada, Hiroaki and Hashimoto, Keiji and Kominami, Hiroshi}, issue = {21}, journal = {The Journal of physical chemistry. C}, month = {May}, note = {A rhodium(III) ion (Rh3+)-modified TiO2 (Rh3+/TiO2) photocatalyst, prepared by a simple adsorption method and exhibiting high levels of photocatalytic activity in degradation of organic compounds, was investigated by using X-ray absorption fine structure (XAFS) measurements, (photo)electrochemical measurements, double-beam photoacoustic (DB-PA) spectroscopic measurements, and photoluminescence measurements. Based on the results, the features of the Rh3+ modifier and the working mechanism of the Rh3+/TiO2 photocatalyst are discussed. XAFS measurements revealed that the Rh3+ species were highly dispersed and almost atomically isolated on TiO2. The (photo)electrochemical measurements, DB-PA spectroscopic measurements, and photoluminescence showed a unique bifunction of the Rh3+ modifier as a promoter for O2 reductions and an electron injector to the conduction band of TiO2 for response to visible light. The reasons for the Rh3+/TiO2 photocatalyst exhibiting higher levels of photocatalytic activity than those of TiO2 photocatalysts modified with other metal ions are also discussed on the basis of obtained results.}, pages = {11008--11016}, title = {Bifunctionality of Rh3+ Modifier on TiO2 and Working Mechanism of Rh3+/TiO2 Photocatalyst under Irradiation of Visible Light}, volume = {117}, year = {2013}, yomi = {ムラカミ, ナオヤ and オウノ, テルヒサ and ミタニ, ヤスノリ} }