Substitution Boosts Charge Separation for High Solar-Driven Photocatalytic Performance
文献类型：期刊论文
| 作者 | Zhang, Gong; Zhang, Le; Liu, Yang; Liu, Limin; Huang, Chin-Pao; Liu, Huijuan; Li, Jinghong |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2016-10-12 |
| 卷号 | 8期号:40页码:26783-26793 |
| 关键词 | BiOBr iodine substitution vacancy photoactivity |
| 英文摘要 | Bandgap engineering of photocatalysts is a common approach to achieving high effective utilization of solar resource. However, the difficulty in achieving bandgap narrowing and high activity simultaneously seems to be irreconcilable via the traditional modification pathway. Herein, we have substituted iodine for a fraction of bromine atoms in BiOBr to overcome this restriction and provided some deep-seated insights into how the substitution boosts the photocatalytic properties. The substituted BiOBr0.75I0.25 exhibited exceptional photoactivity, with photon-to-current conversion efficiency approximately 6 times greater than TiO2 in UV region, and more than 10 times higher than BiOBr or BiOI in visible-light region. We found that the substitution narrowed the bandgap, facilitated the diffusion of electron with small effective mass, as well as induced oxygen vacancies on [Bi2O2](2+) layers. By virtue of the stronger dipole moments produced, the enhancement of intrinsic electric fields between [Bi2O2](2+) and halogen slabs was achieved in BiOBr0.75I0.25; thereby the distance the photogenerated electron could diffuse was sufficient to inhibit the recombination. Out findings not only shed light on the potential properties of hybrid-halide photocatalysts but also provide a Strategy for developing high efficiency catalysts. |
| 收录类别 | SCI |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/36079]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Gong,Zhang, Le,Liu, Yang,et al. Substitution Boosts Charge Separation for High Solar-Driven Photocatalytic Performance[J]. ACS APPLIED MATERIALS & INTERFACES,2016,8(40):26783-26793. |
| APA | Zhang, Gong.,Zhang, Le.,Liu, Yang.,Liu, Limin.,Huang, Chin-Pao.,...&Li, Jinghong.(2016).Substitution Boosts Charge Separation for High Solar-Driven Photocatalytic Performance.ACS APPLIED MATERIALS & INTERFACES,8(40),26783-26793. |
| MLA | Zhang, Gong,et al."Substitution Boosts Charge Separation for High Solar-Driven Photocatalytic Performance".ACS APPLIED MATERIALS & INTERFACES 8.40(2016):26783-26793. |
入库方式： OAI收割
来源：生态环境研究中心
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