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A novel calcined Bi2WO6/BiVO4 heterojunction photocatalyst with highly enhanced photocatalytic activity
文献类型：期刊论文
| 作者 | Ju, Peng1,2 ; Wang, Ping3; Li, Bin3; Fan, Hai3; Ai, Shiyun3; Zhang, Dun1; Wang, Yi1
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| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2014-01-15 |
| 卷号 | 236页码:430-437 |
| 关键词 | Bi2WO6 BiVO4 Heterojunction Photocatalysis Visible light |
| 通讯作者 | Ai, SY (reprint author), Shandong Agr Univ, Coll Chem & Mat Sci, 61 Daizong St, Tai An 271018, Shandong, Peoples R China. |
| 英文摘要 | In this study, a novel visible-light-sensitive calcined Bi2WO6/BiVO4 (C-Bi2WO6/BiVO4) heterojunction photocatalyst was synthesized via a hydrothermal process followed by the calcination at 600 degrees C. The as-prepared multilayer C-Bi2WO6/BiVO4 photocatalyst was composed of Bi2WO6 and BiVO4 with a good visible-light absorption performance. Experimental results showed that C-Bi2WO6/BiVO4 exhibited higher photocatalytic activity than C-Bi2WO6, C-BiVO4, and uncalcined Bi2WO6/BiVO4, and the degradation efficiency of Rhodamine B (RhB) could achieve 100% within 30 min. In addition, after six recycles for the photodegradation of RhB, C-Bi2WO6/BiVO4 did not exhibit significant loss of photocatalytic activity, confirming its stability and long-time reusability. The photocatalytic mechanism was studied by active species trapping experiments, revealing that the holes (h(+)) and hydroxyl radicals ((OH)-O-center dot) played key roles in RhB degradation. Moreover, on the basis of the calculated energy bands, the obviously enhanced photocatalytic performance can be attributed to the efficient separation of photoinduced electron hole pairs. In addition, the calcination improved the crystallinity of C-Bi2WO6/BiVO4, combined with the excellent photoabsorption ability further improved its photocatalytic activity. The present study provides a new strategy to design composite photocatalysts with enhanced photocatalytic performance for water purification and other applications. (C) 2013 Elsevier B.V. All rights reserved. |
| 学科主题 | Engineering |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000328801100046 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/23876]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.Shandong Agr Univ, Coll Chem & Mat Sci, Tai An 271018, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ju, Peng,Wang, Ping,Li, Bin,et al. A novel calcined Bi2WO6/BiVO4 heterojunction photocatalyst with highly enhanced photocatalytic activity[J]. CHEMICAL ENGINEERING JOURNAL,2014,236:430-437. |
| APA | Ju, Peng.,Wang, Ping.,Li, Bin.,Fan, Hai.,Ai, Shiyun.,...&Wang, Yi.(2014).A novel calcined Bi2WO6/BiVO4 heterojunction photocatalyst with highly enhanced photocatalytic activity.CHEMICAL ENGINEERING JOURNAL,236,430-437. |
| MLA | Ju, Peng,et al."A novel calcined Bi2WO6/BiVO4 heterojunction photocatalyst with highly enhanced photocatalytic activity".CHEMICAL ENGINEERING JOURNAL 236(2014):430-437. |
入库方式： OAI收割
来源：海洋研究所
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