Antiphotocorrosion UV-Bi2O3@PANI Photocatalyst Rich in Oxygen Vacancy Defects: Building Processes, Preparation Mechanisms, and Photocatalysis Performance
文献类型：期刊论文
| 作者 | Dou, Wenyue; Kong, Linghao ; Hu, Xingyun; Tan, Zhenzhen; Yang, Yangyang
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| 刊名 | PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
 |
| 出版日期 | 2022 |
| 卷号 | 219期号:23页码:1-10 |
| ISSN号 | 1862-6300 |
| 关键词 | antiphotocorrosion holes transfer oxygen vacancy defects UV light UV-Bi2O3@PANI photocatalysts |
| 英文摘要 | Low content of oxygen vacancy defects (OVs) and limited resistibility to photocorrosion are the core problems in the heterogeneous photocatalytic processes of bismuth oxide (Bi2O3). Herein, the strategy of ultraviolet (UV) light-inducing OVs coupling with polyaniline (PANI) combination inhibiting photocorrosion is employed on the modification of Bi2O3. First, the high methylene blue (MB) degradation efficiency by UV3h-Bi2O3@PANI(0.5 wt%) above 99.5% and the low Bi3+ dissolved concentration below 0.20 mg L-1 under visible light signify the high photocatalytic activity and stability. Then, the mechanisms for generation of OVs and inhibition of photocorrosion are proposed as follows. 1) Holes (h(+)) forming under irradiation, diffusing through the lattice, and reaching the surface of Bi2O3 can be regarded as a monatomic oxygen ion (O-S(-)); 2) O-S(-) combines and continues to be oxidized by h(+), leading to the generation of O-2 with the OVs left in the lattice; 3) UV-Bi2O3 and PANI are excited to produce electrons/holes (e(-)/h(+)); 4) e(-)/h(+) transfer in UV-Bi2O3@PANI heterojunction leads to the separation of h(+) from UV-Bi2O3 and the inhibition of photocorrosion. Through the core problems being overcome, a new idea for the development and application of Bi2O3 with excellent performances in the field of water treatment is provided. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/48531]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Xuzhou University of Technology 2.Chinese Academy of Sciences 3.Research Center for Eco-Environmental Sciences (RCEES) |
| 推荐引用方式 GB/T 7714 | Dou, Wenyue,Kong, Linghao,Hu, Xingyun,et al. Antiphotocorrosion UV-Bi2O3@PANI Photocatalyst Rich in Oxygen Vacancy Defects: Building Processes, Preparation Mechanisms, and Photocatalysis Performance[J]. PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE,2022,219(23):1-10. |
| APA | Dou, Wenyue,Kong, Linghao,Hu, Xingyun,Tan, Zhenzhen,&Yang, Yangyang.(2022).Antiphotocorrosion UV-Bi2O3@PANI Photocatalyst Rich in Oxygen Vacancy Defects: Building Processes, Preparation Mechanisms, and Photocatalysis Performance.PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE,219(23),1-10. |
| MLA | Dou, Wenyue,et al."Antiphotocorrosion UV-Bi2O3@PANI Photocatalyst Rich in Oxygen Vacancy Defects: Building Processes, Preparation Mechanisms, and Photocatalysis Performance".PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE 219.23(2022):1-10. |
入库方式： OAI收割
来源：生态环境研究中心
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