p-AgI anchored on {001} facets of n-Bi2O2CO3 sheets with enhanced photocatalytic activity and stability
文献类型：期刊论文
| 作者 | Hu, Chun; Zhang, Lili; Ji, Huanhuan |
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2017-05-15 |
| 卷号 | 205期号:0页码:34-41 |
| 关键词 | P-agi/n-bi2o2co3 Close Contact Visible Light Photocatalysis 2-chlorophenol |
| 英文摘要 | A close-connected p-AgI/n-Bi2O2CO3 heterojunction was synthesized by a one-step co-crystallization method. The visible-light-driven photoactivity of AgI was exceptionally enhanced by nearly 5 times through in-situ close contact with Bi2O2CO3. After seven cycling measurements, the photodegradation rate of 2-chlorophenol could be maintained at 88% and no Ag+ and Bi3+ could be detected in the reaction solution, indicating high photostability of the heterojunction photocatalyst. On the basis of the characterization of morphology, X-ray diffraction, Fourier-transform infrared spectra and X-ray photoelectron spectroscopy, AgI nanoparticles were selectively anchored on active {001} facets of layered Bi2O2CO3 sheets, and a strong interfacial interaction between p-AgI and n-Bi2O2CO3 was observed, which enhanced effective separation and transfer of the photo-generated electron-hole pair from AgI, resulting in the high photoactivity and photostability of AgI for the degradation and mineralization of 2-chlorophenol under visible light. By the studies of electron spin resonance and other experiments, the charge transfer process at the interface cif p-AgI/n-Bi2O2CO3 was verified that the photoexcited electrons of the conduction band of AgI transferred to the conduction band of Bi2O2CO3 to react with surface adsorbed oxygen into O-2(center dot-), while the photoexcited holes of the valence band of AgI could oxidize organic pollutants in water. (C) 2016 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39722]  |
| 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 | Hu, Chun,Zhang, Lili,Ji, Huanhuan. p-AgI anchored on {001} facets of n-Bi2O2CO3 sheets with enhanced photocatalytic activity and stability[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2017,205(0):34-41. |
| APA | Hu, Chun,Zhang, Lili,&Ji, Huanhuan.(2017).p-AgI anchored on {001} facets of n-Bi2O2CO3 sheets with enhanced photocatalytic activity and stability.APPLIED CATALYSIS B-ENVIRONMENTAL,205(0),34-41. |
| MLA | Hu, Chun,et al."p-AgI anchored on {001} facets of n-Bi2O2CO3 sheets with enhanced photocatalytic activity and stability".APPLIED CATALYSIS B-ENVIRONMENTAL 205.0(2017):34-41. |
入库方式： OAI收割
来源：生态环境研究中心
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