Preparation, characterization and photocatalytic properties of BiOBr/ZnO composites

Yanling Geng; Na Li; Jiyan Ma; Zhenhai Sun

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Preparation, characterization and photocatalytic properties of BiOBr/ZnO composites

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BiOBr/ZnO composite photocatalysts were prepared by a simple hydrothermal method.The as-prepared samples were characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM),transmission electron microscopy (TEM),high-resolution transmission electron microscopy (HRTEM),UV-Vis diffusion reflectance spectroscopy (DRS) and photoluminescence (PL) spectroscopy,respectively.The photocatalytic activities were evaluated by the degradation of methyl blue (MB) under the simulated sunlight irradiation.Among all the samples,the BiOBr/ZnO composite with a mole ratio of 3:1 (Bi:Zn) exhibited the best photocatalytic activity.The improvement of photocatalytic activity was mainly attributed to the low recombination ratio of photo-induced electron-hole pairs.The possible photocatalytic mechanism was discussed on the basis of the band structures of BiOBr and ZnO.

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《天然气化学（英文版）》 |2017年第3期|416-421|共6页
作者
Yanling Geng; Na Li; Jiyan Ma; Zhenhai Sun;
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作者单位

State Key Laboratory Base of Eco-chemical Engineering, Laboratory of Inorganic Synthesis and Applied Chemistry, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China;

State Key Laboratory Base of Eco-chemical Engineering, Laboratory of Inorganic Synthesis and Applied Chemistry, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China;

State Key Laboratory Base of Eco-chemical Engineering, Laboratory of Inorganic Synthesis and Applied Chemistry, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China;

State Key Laboratory Base of Eco-chemical Engineering, Laboratory of Inorganic Synthesis and Applied Chemistry, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China;

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Preparation, characterization and photocatalytic properties of BiOBr/ZnO composites

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