In situ synthesis and photocatalytic performance of WO3/ZnWO4 composite powders

被引：20

作者：

Li, Wen ^{[1
]}

Cao, Liyun ^{[1
]}

Kong, Xingang ^{[1
]}

Huang, Jianfeng ^{[1
]}

Yao, Chunyan ^{[1
]}

Fei, Jie ^{[1
]}

Li, Jiayin ^{[1
]}

机构：

[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Peoples R China

来源：

RSC ADVANCES | 2016年 / 6卷 / 28期

基金：

中国国家自然科学基金;

关键词：

METHYLENE-BLUE;

D O I：

10.1039/c5ra25522h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The WO3/ZnWO4 composite powders were synthesized through an in situ reaction process with tunnel structure K10W12O41 center dot 11H(2)O filliform crystallites used as a precursor. At first, Zn2+ ions was intercalated into the K(10)W1(2)O(41)center dot 11H(2)O crystal by exchanging K+ ions, then these Zn2+-exchanged samples were transformed into WO3/ZnWO4 composite powders during heat-treatment. The formation reaction and structure of these samples were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectrometer (EDS). The results showed that the WO3/ZnWO4 composite powders consisted of WO3 nanopartides and ZnWO4 nanorods. Photocatalytic experiments exhibited an excellent photocatalytic performance for the degradation of methylene blue (MB) and the degradation efficiency was about 95% after 70 min under simulated sunlight.

引用

页码：23783 / 23789

页数：7

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