| Heteroatom-Modulated Switching of Photocatalytic Hydrogen and Oxygen Evolution Preferences of Anatase TiO2 Microspheres |
| G. Liu; J. Pan; L. C. Yin; J. T. S. Irvine; F. Li; J. Tan; P. Wormald; H. M. Cheng
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| 2012
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| 发表期刊 | Advanced Functional Materials
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| ISSN | 1616-301X
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| 卷号 | 22期号:15页码:3233-3238 |
| 摘要 | Understanding and manipulating the two half-reactions of photoinduced electron reduction and hole oxidation are key to designing and constructing efficient photocatalysts. Here, how the spatial distribution of the heteroatom modulates photocatalytic reduction (hydrogen evolution) and oxidation (oxygen evolution) reaction preferences is investigated by moving boron from the core to the shell of an anatase TiO2 microsphere along [001] via thermal diffusion control. The preference towards photocatalytic hydrogen and oxygen producing reactions from splitting water can be switched by creating a shell with an interstitial Bs+ (s = 3) gradient in the TiO2 microsphere. This switching stems from the downward shift of electronic band edges of the shell by a band bending effect that originates from the extra electrons coming from the interstitial Bs+. These results create new opportunities for designing and constructing efficient photocatalysts by spatial heteroatom engineering. |
| 部门归属 | [liu, gang; pan, jian; yin, lichang; li, feng; tan, jun; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [irvine, john t. s.; wormald, philip] univ st andrews, sch chem, st andrews ky16 9st, fife, scotland.;liu, g (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china.;cheng@imr.ac.cn
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| 关键词 | Titanium Dioxide
Photocatalysis
Heteroatoms
Water Splitting
Visible-light Irradiation
Titanium-dioxide
Surface Science
Semiconductor
Water
Cells
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| URL | 查看原文
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/60108
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
G. Liu,J. Pan,L. C. Yin,et al. Heteroatom-Modulated Switching of Photocatalytic Hydrogen and Oxygen Evolution Preferences of Anatase TiO2 Microspheres[J]. Advanced Functional Materials,2012,22(15):3233-3238.
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| APA |
G. Liu.,J. Pan.,L. C. Yin.,J. T. S. Irvine.,F. Li.,...&H. M. Cheng.(2012).Heteroatom-Modulated Switching of Photocatalytic Hydrogen and Oxygen Evolution Preferences of Anatase TiO2 Microspheres.Advanced Functional Materials,22(15),3233-3238.
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| MLA |
G. Liu,et al."Heteroatom-Modulated Switching of Photocatalytic Hydrogen and Oxygen Evolution Preferences of Anatase TiO2 Microspheres".Advanced Functional Materials 22.15(2012):3233-3238.
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