The DOI matches its Crossref record; 25 of the 25 references it cites were found in a registry or an index.
An Efficient Visible-Light-Sensitive Fe(III)-Grafted TiO2 Photocatalyst
Abstract
We have prepared a TiO 2 -based novel visible-light-sensitive photocatalyst, in which Fe(III) species were grafted on a rutile TiO 2 surface (denoted as Fe(III)/TiO 2 ). With use of X-ray absorption fine structure analysis, the grafted iron species were determined to be in the 3+ state and adopt an amorphous FeO(OH)-like structure. Fe(III)/TiO 2 displayed optical absorption in the visible light range over 400 nm, which was assigned to the interfacial charge transfer from the valence band of TiO 2 to the surface Fe(III) species. Its photocatalytic activity was evaluated by the decomposition of gaseous 2-propanol under visible light (400−530 nm), which revealed a high quantum efficiency (QE) of 22%. Monochromatic light experiments indicated that the effective wavelength region was extended as far as 580 nm while maintaining a QE of greater than 10%. On the basis of the analogy to Cu(II)-grafted TiO 2 photocatalyst (Irie, H.; et al. Chem. Phys. Lett . 2008, 457, 202), we speculate that the high performance of the present photocatalyst is derived from the photoproduced holes that are generated in the valence band of TiO 2 and contribute to the oxidative decomposition of 2-propanol, and the catalytic reduction of oxygen (presumably multielectron reduction) by photoproduced Fe(II) species on TiO 2 .
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Metadata
- Authors
- Yu, H., Irie, H., Shimodaira, Y., Hosogi, Y., Kuroda, Y., Miyauchi, M., & Hashimoto, K.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-09-01
- Volume
- 114
- Issue
- 39
- Pages
- 16481-16487
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2030646918
- Cited by
- 364
- References
- 25
- FWCI
- 14.68
- Type
- journal article
- Language
- en
- Open access
- closed
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