| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 47455 | Applied Catalysis B: Environmental | 2010 | 6 Pages |
Abstract
We investigated the chemical state and environment of Cr ions in a Cr ion-grafted TiO2 photocatalyst by means of X-ray absorption fine structure (XAFS) measurements. The XAFS results indicated that the Cr ions exist on TiO2 as Cr(III) in an amorphous Cr2O3-like structure. The Cr2O3-like structure formed clusters and attached to the TiO2 surface. The activity (CO2 generation rate and QE value) was evaluated by 2-propanol decomposition under visible light (1 mW cm−2, 450–580 nm) and was highest with a weight fraction of Cr/TiO2 equaling 1.0 × 10−3. In addition, the activity of the Cr(III)-grafted TiO2 photocatalyst was highly reproducible.
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Authors
Hiroshi Irie, Toshihiko Shibanuma, Kazuhide Kamiya, Shuhei Miura, Toshihiko Yokoyama, Kazuhito Hashimoto,