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Fabrication of a three-dimensional BiOBr/BiOI photocatalyst with enhanced visible light photocatalytic performance

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WOS被引频次:35
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成果类型:
期刊论文
作者:
Lin, Li;Huang, Manhong;Long, Liping;Sun, Zhe;Zheng, Wei;Chen, Donghui
通讯作者:
Chen, DH
作者机构:
[Sun, Zhe; Zheng, Wei; Chen, Donghui; Lin, Li; Huang, Manhong] School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
[Long, Liping; Lin, Li] School of Chemical and Environmental Engineering, Hunan City University, Yiyang 413000, China
通讯机构:
[Chen, DH] Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China.
语种:
英文
关键词:
BiOBr/BiOI;Photocatalyst;Rhodamine B;Tetracycline;Visible light
期刊:
CERAMICS INTERNATIONAL
ISSN:
0272-8842
年:
2014
卷:
40
期:
8
页码:
11493-11501
文献类别:
WOS:Article;EI:Journal article (JA)
所属学科:
ESI学科类别:材料科学;WOS学科类别:Materials Science, Ceramics
入藏号:
WOS:000340328600004;EI:20142817933885
基金类别:
Hu Nan province Ministry of Transportation scientific research project [200908, 201105]; Ministry of Transport science and technology program [2010353343290]
机构署名:
本校为其他机构
院系归属:
材料与化学工程学院
摘要:
Three-dimensional (3D) BiOBr/BiOI hierarchical microsphere photocatalysts were successfully synthesized via a facile one-pot solvothermal method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), UV-vis diffuse reflectance spectroscopy (UV-vis DRS) and N<inf>2</inf> adsorption-desorption isotherms. The photocatalytic activity was evaluated by the photocatalytic degradation of Rhodamine B (RhB) and tetracycline (TC) under visible light irradiation (&lambda;&gt;420 nm). The 50% BiOBr/BiOI composite showed a higher photocatalytic removal efficiency of RhB and TC than 10% and 90% BiOBr/BiOI composites. RhB (C<inf>0</inf>=15 mg/L) was degraded completely within 40 min and over 83% of TC (C<inf>0</inf>= 40 mg/L) was degraded within 50 min using a catalyst quantity of 0.4 g/L of 50% BiOBr/BiOI. The enhanced photocatalytic activity of the 50:50 composite was attributed to effective separation of photogenerated carriers and the balance between enhanced visible light absorption and decreased valence band (VB) edge potential. &copy;2014 Elsevier Ltd and Techna Group S.r.l.
参考文献:
Bulter M. A., 1978, J ELECTROCHEM SOC, V125, P228
BUTLER MA, 1977, J APPL PHYS, V48, P1914, DOI 10.1063/1.323948
Cao J, 2012, CHEM ENG J, V185, P91, DOI 10.1016/j.cej.2012.01.035
Chen L, 2013, INORG CHEM, V52, P11118, DOI 10.1021/ic401349j
Chen MJ, 2012, J HAZARD MATER, V219, P183, DOI 10.1016/j.jhazmat.2012.03.074

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