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题名:
A visible-light-driven heterojuncted composite WO3/Bi12O17Cl2: Synthesis, characterization, and improved photocatalytic performance
作者: Zheng, Jiaojiao1; Chang, Fei1; Jiao, Mingzhi1; Xu, Quan1; Deng, Baoqing1; Hu, Xuefeng2
刊名: JOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN号: 0021-9797
出版日期: 2018-01-15
卷号: 510, 页码:20-31
关键词: Bi12O17Cl2 ; WO3 ; Composite ; Heterojunction ; Photocatalytic ; Degradation
DOI: 10.1016/j.jcis.2017.07.119
产权排序: 第2完成单位
通讯作者: Chang, Fei(Univ Shanghai Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China) ; Hu, Xuefeng(Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remedia, Yantai 264003, Shandong, Peoples R China)
英文摘要: Novel visible-light-driven WO3/Bi12O12Cl2 heterojuncted photocatalysts with different mass ratios were successfully fabricated by a facile hydrothermal process and were characterized by XRD, UV-Vis DRS, SEM, TEM, HRTEM, XPS, BET, Raman, PL, and ESR techniques. The original morphology of Bi12O12Cl2 was maintained after the addition of WO3 nanoparticles and the specific surface area values of WBx composites were obviously enlarged. The intimate contact of both components in HRTEM confirmed the generation of smooth phase interface. These as-prepared samples were subjected to the photocatalytic degradation of dye rhodamine B (RhB) and tetracycline hydrochloride (TC) under visible light irradiation (lambda >= 420 nm). Under identical conditions, WBx composites showed greatly enhanced photocatalytic performance in comparison to bare WO3 and Bi12O12Cl2. Especially, the sample WB0.5 exhibited the highest photocatalytic removal outcome over RhB among all tested candidates and owned an apparent rate constant about 73.7, 7.1, 15.8 times of those pure WO3, Bi12O12Cl2, and N-doped TiO2, respectively. The enhancement of photocatalytic capability of composites mainly attributed to the suitable morphology, enlarged specific surface areas, strengthened optical property, and favorable well-aligned straddling band-structures. Active species entrapping experiments confirmed holes and superoxide radicals as major oxidative species, by which, a possible photocatalytic mechanism was primarily proposed. (C) 2017 Elsevier Inc. All rights reserved.
研究领域[WOS]: Chemistry
项目资助者: National Natural Science Foundation of China(21207089) ; SRF for ROCS, SEM ; Natural Science Foundation of Shanghai(17ZR1419200)
关键词[WOS]: HYDROTHERMAL SYNTHESIS ; OXYGEN-RICH ; COMBUSTION SYNTHESIS ; CHARGE-TRANSFER ; BISPHENOL-A ; DOPED BIOCL ; DEGRADATION ; BI12O17CL2 ; WO3 ; NANOSHEETS
文章类型: Article
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000414823800003
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内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/23465
Appears in Collections:中科院海岸带环境过程与生态修复重点实验室_期刊论文

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作者单位: 1.Univ Shanghai Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remedia, Yantai 264003, Shandong, Peoples R China

Recommended Citation:
Zheng, Jiaojiao,Chang, Fei,Jiao, Mingzhi,et al. A visible-light-driven heterojuncted composite WO3/Bi12O17Cl2: Synthesis, characterization, and improved photocatalytic performance[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2018,510:20-31.
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