A novel Cl- modification approach to develop highly efficient photocatalytic oxygen evolution over BiVO4 with AQE of 34.6%
文献类型：期刊论文
| 作者 | Zhang, Qiqi; Liu, Min; Zhou, Wei; Zhang, Yajun; Hao, Weichang; Kuang, Yongbo; Liu, Huimin; Wang, Defa; Liu, Lequan; Ye, Jinhua |
| 刊名 | NANO ENERGY
 |
| 出版日期 | 2021 |
| 卷号 | 81 |
| 英文摘要 | Water oxidation with multielectron transfer is regarded as the crucial step in photocatalytic water splitting. However, a facile but efficient method to promote its slow kinetics is still highly demanding. This work demonstrates that Clsurface modification drastically enhances photocatalytic water oxidation over BiVO4 as well as WO3. The optimal modified BiVO4 achieves a photocatalytic activity of 4.2 orders enhancement relative to the pristine BiVO4, giving up to an excellent apparent quantum efficiency of 34.6% at 420 nm. Cl--modified 30-facet BiVO4 with 2.6 times enhancement confirms that the surface reaction involved with photogenerated holes can be dramatically accelerated by Clmodification in addition to enhanced charge carrier separation. Our results highlight the impact of Clmodification on the reaction kinetics and pathway during the photocatalytic water oxidation process, which has been mostly overlooked. Systematic studies (DFT simulations, kinetic experiments) reveal that Clmodification remarkably reduces the photocatalytic water oxidation energy barrier and alters reaction pathway, which is also manifested in facilitated H2O molecule activation in synchronous illumination XPS (SI-XPS) study. The EXAFS and angle-resolved XPS (AR-XPS) results show that Cl bonds to Bi and mainly concentrates on the surface of modified BiVO4. Our findings provide an effective and facile approach to exploring efficient O-2 evolution semiconductors for photocatalytic water splitting. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22147]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | Liu, LQ (corresponding author), Tianjin Univ, TJU NIMS Int Collaborat Lab, Sch Mat Sci & Engn, 92 Weijin Rd, Nankai Dist 300072, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zhang, Qiqi,Liu, Min,Zhou, Wei,et al. A novel Cl- modification approach to develop highly efficient photocatalytic oxygen evolution over BiVO4 with AQE of 34.6%[J]. NANO ENERGY,2021,81. |
| APA | Zhang, Qiqi.,Liu, Min.,Zhou, Wei.,Zhang, Yajun.,Hao, Weichang.,...&Ye, Jinhua.(2021).A novel Cl- modification approach to develop highly efficient photocatalytic oxygen evolution over BiVO4 with AQE of 34.6%.NANO ENERGY,81. |
| MLA | Zhang, Qiqi,et al."A novel Cl- modification approach to develop highly efficient photocatalytic oxygen evolution over BiVO4 with AQE of 34.6%".NANO ENERGY 81(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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