Modified Impregnation Synthesis of Fe-loaded WO3 Nanosheets and the Gas-sensing Properties

被引：13

作者：

Zeng, Yan ^{[1
]}

Hua, Zhongqiu ^{[1
]}

Tian, Xuemin ^{[1
]}

Li, Yan ^{[1
]}

Qiu, Zhilei ^{[1
]}

Wang, Tianci ^{[1
]}

机构：

[1] Hebei Univ Technol, Tianjin Key Lab Elect Mat & Devices, Sch Elect & Informat Engn, Tianjin 300401, Peoples R China

来源：

CHEMISTRY LETTERS | 2017年 / 46卷 / 09期

基金：

中国国家自然科学基金;

关键词：

WO3; Fe-loaded nanosheets; Gas sensors; SENSORS; MECHANISM; BREATH; NO2;

D O I：

10.1246/cl.170555

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In the present study, flake WO3 nanosheets were prepared by a simple acidification method, and the surface of nanosheets was catalytically decorated with Fe via a modified impregnation procedure. The structure and morphology of the nanosheets were characterized by X-ray diffraction, SEM, and TEM. The results indicated that the WO3 nanosheets are highly irregular with a small thickness of 10-20 nm, and the Fe nanoparticles were found to be distributed on the surface of WO3. In addition, the sensing properties of WO3 and Fe-loaded WO3 were also investigated. It was revealed that the surface catalytic modification of Fe could significantly promote the sensing ability of WO3 nanosheets. In particular, Fe-WO3 nanosheets showed an excellent response to acetone, even down to 1 ppm.

引用

页码：1353 / 1356

页数：4

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