Synthesis and characterizations of V2O5/ZnO nanocomposites and enhanced photocatalytic activity

被引：9
|
作者：
Shi, Qing [1 ]
Wang, Shu [1 ]
Wu, Haijun [1 ]
Yu, Miao [1 ]
Su, Xiaohua [1 ]
Ma, Fa [1 ]
Jiang, Jiuxing [1 ]
机构：
[1] Harbin Univ Sci & Technol, Sch Sci, Harbin, Heilongjiang, Peoples R China
来源：
FERROELECTRICS | 2018年 / 523卷 / 01期
基金：
中国国家自然科学基金;
关键词：
ZnO; V2O5; colloidal carbon spheres; characterization and photocatalysis; AZO-DYE; ZNO; SOLAR; NANOSTRUCTURES; DEGRADATION; HYDROGEN; GROWTH; WATER;
D O I：
10.1080/00150193.2018.1391563
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The colloidal carbon spheres were used as transitional carriers for the first time to obtain V2O5/ZnO nanocomposites. Each component was prepared by hydrothermal method, and the final product V2O5/ZnO nanocomposites were obtained after sintering in air to remove the colloidal carbon spheres completely. The XRD, TEM and XPS analyses showed the as-prepared samples were composed by wurtzite ZnO and orthorhombic V2O5. Meanwhile, the optical properties of samples were investigated in detail comparing with those of bare ZnO: UV-vis absorption spectra of V2O5/ZnO composites showed their stronger absorption in the visible region, in addition, a significant decrease on emission intensity was observed in the photoluminescence (PL) spectra, which revealed a low combination rate of photogenerated carriers of V2O5/ZnO nanocomposites in this work. Finally, the photocatalytic activities of samples were detected by photodegrading methylene blue (MB) under the simulated solar-driven irradiation. As a result, V2O5/ZnO nanocomposites showed an excellent photocatalytic behavior with a photodegradation rate over 2times higher than that of bare ZnO, because of its extended visible response and enhanced charge separation efficiency.
引用
收藏
页码：74 / 81
页数：8
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