Institutional Repository of Key Laboratory of Marine Environmental Corrosion and Bio-fouling, IOCAS
| Chemical etching preparation of the Bi2WO6/BiOI p-n heterojunction with enhanced photocatalytic antifouling activity under visible light irradiation | |
Xiang, Yuhui1,2; Ju, Peng2,3 ; Wang, Yi2; Sun, Yan2; Zhang, Dun2; Yu, Jianqiang1
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| 2016-03-15 | |
| 发表期刊 | CHEMICAL ENGINEERING JOURNAL
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| 卷号 | 288期号:2016页码:264-275 |
| 文章类型 | Article |
| 摘要 | In this paper, a novel Bi2WO6/BiOI heterojunction photocatalyst was prepared based on a chemical etching method and used in photocatalytic antifouling. The as-prepared Bi2WO6/BiOI photocatalyst was composed of Bi2WO6 and BiOI, exhibiting a three-dimensional hierarchical microsphere structure. Experimental results indicated that the molar percentage of Bi2WO6 to BiOI leaded to different morphologies and photocatalytic activities of Bi2WO6/BiOI composites. 30%Bi2WO6/BiOI exhibited an improved photocatalytic performance under visible light irradiation compared to pure Bi2WO6, pure BiOI, and other Bi2WO6/BiOI composites. Almost all (99.99%) of Pseudomonas Aeruginosa (P. aeruginosa), Escherichia Coli (E. coli) and Staphylococcus Aureus (S. aureus) could be killed and the degradation efficiency of methyl blue (MB) could achieve 100% within 60 min in the presence of 30%Bi2WO6/BiOI. In addition, after six circulating photocatalytic antifouling experiments, 30%Bi2WO6/BiOI exhibited no significant loss of photocatalytic performance, verifying its stability and reusability, which was especially important for its application. Moreover, a possible photocatalytic mechanism was proposed based on active species trapping experiments, demonstrating that the superoxide radicals (O-center dot(2)-) and the holes (h(+)) were the main reactive species in this system. The obviously enhanced photocatalytic activity of the 30%Bi2WO6/BiOI heterojunction photocatalyst could be mainly attributed to the formation of the p-n heterojunction, accelerating the separation of photogenerated charge carriers. This work provides a valuable information on the design of novel heterojunction photocatalysts with excellent photocatalytic properties used in marine antifouling. (C) 2015 Elsevier B.V. All rights reserved. |
| 关键词 | Bioi Bi2wo6 Photocatalysis Antifouling Visible Light |
| DOI | 10.1016/j.cej.2015.11.103 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000370085900028 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/112464 |
| 专题 | 海洋环境腐蚀与生物污损重点实验室 |
| 作者单位 | 1.Qingdao Univ, Key Lab New Fiber Mat & Modern Text, Collaborat Innovat Ctr Marine Biomass Fibers Mat, 308 Ningxia Rd, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Key Lab Marine Environm Corros & Biofouling, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, 19 Jia Yuquan Rd, Beijing 100039, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Xiang, Yuhui,Ju, Peng,Wang, Yi,et al. Chemical etching preparation of the Bi2WO6/BiOI p-n heterojunction with enhanced photocatalytic antifouling activity under visible light irradiation[J]. CHEMICAL ENGINEERING JOURNAL,2016,288(2016):264-275. |
| APA | Xiang, Yuhui,Ju, Peng,Wang, Yi,Sun, Yan,Zhang, Dun,&Yu, Jianqiang.(2016).Chemical etching preparation of the Bi2WO6/BiOI p-n heterojunction with enhanced photocatalytic antifouling activity under visible light irradiation.CHEMICAL ENGINEERING JOURNAL,288(2016),264-275. |
| MLA | Xiang, Yuhui,et al."Chemical etching preparation of the Bi2WO6/BiOI p-n heterojunction with enhanced photocatalytic antifouling activity under visible light irradiation".CHEMICAL ENGINEERING JOURNAL 288.2016(2016):264-275. |
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| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Chemical etching pre（4152KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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