期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 114, 期 1, 页码 516-519出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp908875t
关键词
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资金
- E.U. [CT-2006-042095]
- Swiss NSF [200021-116688]
- NSF [206021-121306]
- Swiss Federal Office of Energy [153613-102809, 153613-102691]
- Swiss CTI [7023.3
- 4]
- U.S. Department of Education [DE-AC02-05CH11231]
Close inspection of the pre-edge in oxygen near-edge X-ray absorption fine structure spectra of single-step, gas-phase-synthesized titanium oxynitride photocatalysts with 20 nm particle size reveals an additional e(g) resonance in the valence band that went unnoticed in previous TiO2 anion doping studies. The relative spectral weight of this Ti(3d)-O(2p) hybridized state with respect to and located between the readily established t(2g) and e(g) resonances scales qualitatively with the photocatalytic decomposition power, suggesting that this extra resonance bears co-responsibility for the photocatalytic performance of titanium oxynitrides at visible light wavelengths.
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