SiO2/Bi2MoO6 nanocomposites with high photocatalytic activity under visible light irradiation

被引：32
作者：
Lin, Xue [1 ]
Guo, Xiaoyu [2 ]
Liu, Di [2 ]
Wang, Qingwei [1 ]
Zhai, Hongju [2 ]
Chang, Limin [2 ]
机构：
[1] Jilin Normal Univ, Key Lab Preparat & Applicat Environm Frien, Siping 136000, Peoples R China
[2] Jilin Normal Univ, Coll Chem, Siping 136000, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2015年 / 63卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Nanostructures; Oxides; Chemical synthesis; Optical properties; Catalytic properties; HIERARCHICAL HETEROSTRUCTURES; HYDROTHERMAL SYNTHESIS; COMPOSITE; BI2MOO6; NANOPARTICLES; MICROSPHERES; EFFICIENCY; SYSTEM; SIO2;
D O I：
10.1016/j.materresbull.2014.11.049
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of SiO2 nanoparticles on Bi2MoO6 photocatalytic performance was described. The results indicated that SiO2 nanospheres were dispersed on Bi2MoO6 nanosheets to form heterostructures with higher specific surface area and more intensive absorption within the visible light range in comparison with pure Bi2MoO6. These excellent structural and spectral properties endowed the SiO2-Bi2MoO6 composites with enhanced photocatalytic activities. The photocatalytic results for the degradation of Rhodamine B (Rh B) indicated that the most active composite proportion is 13.4%SiO2-Bi2MoO6. The high visible light photocatalytic performance was attributed to the synergistic effect between SiO2 and Bi2MoO6, intensive absorption within the visible light range, and high specific surface area. It was also found that the photodegradation of Rh B molecules is mainly attributed to the oxidation action of the generated O-2(center dot-) radicals and partly to the action of h(vb)(+) through direct hole oxidation process. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：72 / 79
页数：8
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