| Iodine-Deficient BiOI Nanosheets with Lowered Valence Band Maximum To Enable Visible Light Photocatalytic Activity | |
| Wang, Xuewen1; Zhou, Chengxi1; Yin, Lichang2; Zhang, Rongbin1; Liu, Gang2,3 | |
| Corresponding Author | Zhang, Rongbin(rbzhang@ncu.edu.cn) ; Liu, Gang(gangliu@imr.ac.cn) |
| 2019-04-15 | |
| Source Publication | ACS SUSTAINABLE CHEMISTRY & ENGINEERING
 |
| ISSN | 2168-0485 |
| Volume | 7Issue:8Pages:7900-7907 |
| Abstract | Bismuth oxyhalides with layered structures have emerged as an important class of photocatalysts but usually suffer from low activity largely due to their unfavorable band structures. Although point defects as typical electronic structure modifiers have been actively used to modify electronic structures of photocatalysts for high photocatalytic activity, the underlying role of halogen vacancies in improving activity of bismuth oxyhalides has been overlooked. In this study, we demonstrate the substantial role of iodine vacancies in enabling photocatalytic activity of BiOI as a model oxyhalide photocatalyst. It is found that iodine vacancies cause a 0.23 eV downward shift of the valence band maximum of BiOI but not much change in the bandgap. Such band structure modification leads to the formation of photogenerated holes with a stronger oxidative ability, which is favorable for photocatalysis with the holes induced half reaction as a rate-determining step. The results obtained might provide an important implication in designing highly efficient oxyhalide-based photocatalysts by controlling halogen vacancies. |
| Keyword | Iodine vacancy BiOI Photocatalyst Visible light |
| Funding Organization | National Science Fund of China (NSFC) ; Natural Science Foundation of Jiangxi Province ; Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund (the second phase) |
| DOI | 10.1021/acssuschemeng.9b00548 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Science Fund of China (NSFC)[51662030] ; National Science Fund of China (NSFC)[51862023] ; National Science Fund of China (NSFC)[51472249] ; National Science Fund of China (NSFC)[51825204] ; Natural Science Foundation of Jiangxi Province[20171BAB206014] ; Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund (the second phase)[U1501501] |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Engineering |
| WOS Subject | Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical |
| WOS ID | WOS:000465188600050 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/133054 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Rongbin; Liu, Gang |
| Affiliation | 1.Nanchang Univ, Coll Chem, Key Lab Jiangxi Prov Environm & Energy Catalysis, 999 Xuefu Rd, Nanchang 330031, Jiangxi, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Xuewen,Zhou, Chengxi,Yin, Lichang,et al. Iodine-Deficient BiOI Nanosheets with Lowered Valence Band Maximum To Enable Visible Light Photocatalytic Activity[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2019,7(8):7900-7907. |
| APA | Wang, Xuewen,Zhou, Chengxi,Yin, Lichang,Zhang, Rongbin,&Liu, Gang.(2019).Iodine-Deficient BiOI Nanosheets with Lowered Valence Band Maximum To Enable Visible Light Photocatalytic Activity.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,7(8),7900-7907. |
| MLA | Wang, Xuewen,et al."Iodine-Deficient BiOI Nanosheets with Lowered Valence Band Maximum To Enable Visible Light Photocatalytic Activity".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 7.8(2019):7900-7907. |
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