Crystal facet-dependent photocatalytic oxidation and reduction reactivity of monoclinic WO3 for solar energy conversion
文献类型：期刊论文
| 作者 | Y. P. Xie ; G. Liu ; L. C. Yin ; H. M. Cheng |
| 刊名 | Journal of Materials Chemistry
 |
| 出版日期 | 2012 |
| 卷号 | 22期号:14页码:6746-6751 |
| 关键词 | light-driven photocatalysts augmented-wave method visible-light hydrogen-production tungsten-oxide tio2 water surface nanocrystals efficiency |
| ISSN号 | 0959-9428 |
| 中文摘要 | The reactivity of a photocatalyst is basically influenced by its surface atomic and linked electronic structure. Tuning different crystal facets is becoming an important strategy to optimize the reactivity of a photocatalyst for targeted reactions. Here we report a facile and new route of synthesizing a quasi-cubic-like WO3 crystal with a nearly equal percentage of {002}, {200} and {020} facets, and a rectangular sheet-like WO3 crystal with predominant {002} facet by controlling acidic hydrolysis of crystalline WB. As a result of electronic structure effects induced by crystal facet, the quasi-cubic-like WO3 crystal with a deeper valence band maximum shows a much higher O-2 evolution rate in photocatalytic water oxidation than the rectangular sheet-like WO3 crystal. The latter, with an elevated conduction band minimum of 0.3 eV, is able to photoreduce CO2 to generate CH4 in the presence of H2O vapor. |
| 原文出处 | |
| 公开日期 | 2013-02-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/60359]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Y. P. Xie,G. Liu,L. C. Yin,et al. Crystal facet-dependent photocatalytic oxidation and reduction reactivity of monoclinic WO3 for solar energy conversion[J]. Journal of Materials Chemistry,2012,22(14):6746-6751. |
| APA | Y. P. Xie,G. Liu,L. C. Yin,&H. M. Cheng.(2012).Crystal facet-dependent photocatalytic oxidation and reduction reactivity of monoclinic WO3 for solar energy conversion.Journal of Materials Chemistry,22(14),6746-6751. |
| MLA | Y. P. Xie,et al."Crystal facet-dependent photocatalytic oxidation and reduction reactivity of monoclinic WO3 for solar energy conversion".Journal of Materials Chemistry 22.14(2012):6746-6751. |
入库方式： OAI收割
来源：金属研究所
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