Synergistic photocatalytic degradation mechanism of BiOClxI1-x-OVs based on oxygen vacancies and internal electric field-mediated solid solution
文献类型：期刊论文
| 作者 | He, Hao2; Liu, Chenrui2; Li, Mengke2; Liu, Yun2; Zhu, Runliang1
|
| 刊名 | Chemosphere
 |
| 出版日期 | 2023 |
| 卷号 | 337页码:139281 |
| ISSN号 | 0045-6535 |
| DOI | 10.1016/j.chemosphere.2023.139281 |
| 英文摘要 | The easy recombination of photoexcited electron-hole pairs is a serious constraint for the application of photocatalysts. In this work, a range of BiOClxI1-x solid solutions with abundant oxygen vacancies (BiOClxI1-x-OVs) were synthesized. In particular, the optimal BiOCl0.5I0.5-OVs sample exhibited almost 100% removal of bisphenol A (BPA) within 45 min visible light exposure, which was 22.4, 3.1 and 4.5 times greater than BiOCl, BiOCl-OVs and BiOCl0.5I0.5, respectively. Besides, the apparent quantum yield of BPA degradation reaches 0.24%, better than some other photocatalysts. Benefiting from the synergism of oxygen vacancies and solid solution, BiOCl0.5I0.5-OVs gained an enhanced photocatalytic capacity. Oxygen vacancies induced an intermediate defective energy level in BiOClxI1-x-OVs materials, promoting the generation of photogenerated electrons and the molecular oxygen adsorption to produce more active oxygen radicals. Meanwhile, the fabricated solid solution structure enhanced the internal electric field between BiOCl layers, achieving rapid migration of photoexcited electrons and effective segregation of photoinduced charge carriers. Thus, this study provides a viable idea to solve the problems of poor visible light absorption of BiOCl-based photocatalysts and easy reorganization of electrons and holes in the photocatalysts. ? 2023 Elsevier Ltd |
| 语种 | 英语 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80216]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 作者单位 | 1.CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou; 510640, China 2.Department of Environmental Science and Engineering, College of Environment and Resources, Xiangtan University, Xiangtan; 411105, China |
| 推荐引用方式 GB/T 7714 | He, Hao,Liu, Chenrui,Li, Mengke,et al. Synergistic photocatalytic degradation mechanism of BiOClxI1-x-OVs based on oxygen vacancies and internal electric field-mediated solid solution[J]. Chemosphere,2023,337:139281. |
| APA | He, Hao,Liu, Chenrui,Li, Mengke,Liu, Yun,&Zhu, Runliang.(2023).Synergistic photocatalytic degradation mechanism of BiOClxI1-x-OVs based on oxygen vacancies and internal electric field-mediated solid solution.Chemosphere,337,139281. |
| MLA | He, Hao,et al."Synergistic photocatalytic degradation mechanism of BiOClxI1-x-OVs based on oxygen vacancies and internal electric field-mediated solid solution".Chemosphere 337(2023):139281. |
入库方式： OAI收割
来源：广州地球化学研究所
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