An Unusual Strong Visible-Light Absorption Band in Red Anatase TiO2 Photocatalyst Induced by Atomic Hydrogen-Occupied Oxygen Vacancies
Yang, YQ; Yin, LC; Gong, Y; Niu, P; Wang, JQ; Gu, L; Chen, XQ; Liu, G; Wang, LZ; Cheng, HM
2018
发表期刊ADVANCED MATERIALS
ISSN0935-9648
卷号30期号:6页码:-
文章类型期刊论文
摘要Increasing visible light absorption of classic wide-bandgap photocatalysts like TiO2 has long been pursued in order to promote solar energy conversion. Modulating the composition and/or stoichiometry of these photocatalysts is essential to narrow their bandgap for a strong visible-light absorption band. However, the bands obtained so far normally suffer from a low absorbance and/or narrow range. Herein, in contrast to the common tail-like absorption band in hydrogen-free oxygen-deficient TiO2, an unusual strong absorption band spanning the full spectrum of visible light is achieved in anatase TiO2 by intentionally introducing atomic hydrogen-mediated oxygen vacancies. Combining experimental characterizations with theoretical calculations reveals the excitation of a new subvalence band associated with atomic hydrogen filled oxygen vacancies as the origin of such band, which subsequently leads to active photo-electrochemical water oxidation under visible light. These findings could provide a powerful way of tailoring wide-bandgap semiconductors to fully capture solar light.
关键词Electron-spin-resonance State Z-scheme Carbon Nitride Polycrystalline Tio2 Energy-conversion Titanium-dioxide Water Efficiency Evolution Performance
DOI10.1002/adma.201704479
收录类别SCI
语种英语
WOS记录号WOS:000424485100018
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28928
专题中科院上海应用物理研究所2011-2018年
作者单位1.Yang, YQ
2.Yin, LC
3.Gong, Y
4.Niu, P
5.Wang, JQ
6.Gu, L
7.Chen, XQ
8.Liu, G
9.Wang, LZ
10.Cheng, HM
推荐引用方式
GB/T 7714
Yang, YQ,Yin, LC,Gong, Y,et al. An Unusual Strong Visible-Light Absorption Band in Red Anatase TiO2 Photocatalyst Induced by Atomic Hydrogen-Occupied Oxygen Vacancies[J]. ADVANCED MATERIALS,2018,30(6):-.
APA Yang, YQ.,Yin, LC.,Gong, Y.,Niu, P.,Wang, JQ.,...&Cheng, HM.(2018).An Unusual Strong Visible-Light Absorption Band in Red Anatase TiO2 Photocatalyst Induced by Atomic Hydrogen-Occupied Oxygen Vacancies.ADVANCED MATERIALS,30(6),-.
MLA Yang, YQ,et al."An Unusual Strong Visible-Light Absorption Band in Red Anatase TiO2 Photocatalyst Induced by Atomic Hydrogen-Occupied Oxygen Vacancies".ADVANCED MATERIALS 30.6(2018):-.
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