Enhanced photocatalytic destruction of pollutants by surface W vacancies in V-W-Bi2WO6 under visible light
文献类型：期刊论文
| 作者 | Wang, Zhiqiang; Zhang, Lili ; Zhang, Xiao; Hu, Chun; Wang, Liang; Shi, Baoyou; Cao, Xingzhong
|
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2020-09-15 |
| 卷号 | 576页码:385-393 |
| 关键词 | W vacancies Enhanced photoactivity Pollutants degradation Visible light |
| ISSN号 | 0021-9797 |
| 英文摘要 | W vacancies containing Bi2WO6 (V-W-Bi2WO6) was synthesized by a reductant-involved hydrothermal process. The photoactivity of Bi2WO6 was enhanced by 3.3 times and the TOC removal rate increased from 38.3% to 64.7% after the introduction of surface W vacancies. Positron annihilation spectrometry (PAS), XPS, Raman spectra and other characterization results indicated that W vacancies existed on the catalyst surface. The surface W vacancies were proved to widen the band gap and negatively shift CB edge to produce more O-2(center dot) and photoexcited holes at catalyst surface, as confirmed by ESR and radicals trapping experiments. Further, according to the results of pyridine adsorbed FTIR and Zeta potentials, the enhanced interaction between pollutants and V-W-Bi2WO6 was confirmed. As a result, the active species produced at surface were able to be accelerated to directly react with organic pollutants, leading to the highly efficient degradation and mineralization of pollutants in water. (C) 2020 Elsevier Inc. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45288]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Wang, Zhiqiang,Zhang, Lili,Zhang, Xiao,et al. Enhanced photocatalytic destruction of pollutants by surface W vacancies in V-W-Bi2WO6 under visible light[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2020,576:385-393. |
| APA | Wang, Zhiqiang.,Zhang, Lili.,Zhang, Xiao.,Hu, Chun.,Wang, Liang.,...&Cao, Xingzhong.(2020).Enhanced photocatalytic destruction of pollutants by surface W vacancies in V-W-Bi2WO6 under visible light.JOURNAL OF COLLOID AND INTERFACE SCIENCE,576,385-393. |
| MLA | Wang, Zhiqiang,et al."Enhanced photocatalytic destruction of pollutants by surface W vacancies in V-W-Bi2WO6 under visible light".JOURNAL OF COLLOID AND INTERFACE SCIENCE 576(2020):385-393. |
入库方式： OAI收割
来源：生态环境研究中心
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