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题名: Hierarchical BiOCl microflowers with improved visible-light-driven photocatalytic activity by Fe(III) modification
作者: Huang, CJ; Hu, JL; Cong, S(丛杉); Zhao, ZG(赵志刚); Qiu, XQ
通讯作者: Zhao, ZG (赵志刚)
关键词: BiOCl ; Visible light ; Surface modification ; Multi-electron redox ; Photocatalysis
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
发表日期: 2015
DOI: 10.1016/j.apcatb.2015.03.001
卷: 174, 页:8
收录类别: SCI
部门归属: 先进材料研究部
英文摘要: Hierarchical BiOCl microflowers have been synthesized by one-step solvothermal method, which are constructed from many thin nanosheets by exposing the highly active highly active {001} facets. Considering the wide band gap of BiOCl microflowers (3.4 eV), the amorphous Fe(III) clusters were grafted on the surfaces through a simple impregnation method to extend the photocatalytic activity to the visible light region. The obtained products were characterized by X-ray diffraction, scanning electron and transmission microscopy, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectroscopy, nitrogen adsorption-desorption, and electrochemical measurements. It is found that the Fe(III) clusters are just deposited on the surfaces rather than doped in the lattices of BiOCl. The morphologies and-crystal structures of BiOCl microflowers thus remain unchanged after modification of Fe(III) clusters. The photocatalytic activity for the decomposition gaseous acetaldehyde can be significantly improved by the modification of Fe(III) clusters under visible light irradiation. The surface Fe(III) clusters play an important role in the interfacial charge transfer for the visible light absorption. Furthermore, together with the strong oxidative holes in the valence band of BiOCl, the Fe(III) clusters can serves as the redox reaction centers for the multi-electron reduction of oxygen molecules, resulting in the full decomposition of acetaldehyde into CO2. (C) 2015 Elsevier B.V. All rights reserved.
语种: 英语
JCR小类分区: 一区
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内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/3322
Appears in Collections:先进材料研究部_赵志刚团队_期刊论文

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Recommended Citation:
Huang, CJ,Hu, JL,Cong, S,et al. Hierarchical BiOCl microflowers with improved visible-light-driven photocatalytic activity by Fe(III) modification[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2015,174:8.
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