H2S sensitivity study of polypyrrole/WO3 materials

被引：49

作者：

Geng, Lina ^{[1
]}

Huang, Xueliang ^{[1
]}

Zhao, Yingqiang ^{[1
]}

Li, Peng ^{[1
]}

Wang, Shurong ^{[1
]}

Zhang, Shoumin ^{[1
]}

Wu, Shihua ^{[1
]}

机构：

[1] Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China

来源：

SOLID-STATE ELECTRONICS | 2006年 / 50卷 / 05期

关键词：

H2S; gas sensitivity; polypyrrole; WO3;

D O I：

10.1016/j.sse.2006.04.024

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this work, a H2S sensor formed from hybrid of WO3 and polypyrrole (PPy) by mechanical mixing was produced. The gas-sensing properties of the hybrid materials were studied and compared with those of PPy and WO3. It was found that PPY/WO3 materials can complement the drawbacks of pure PPy and WO3 to Some extent. PPY/WO3 materials with varies PPy mass percent (1%, 3%, 5%, 10%, 20%) had better reversibility than PPy, and also had higher sensitivity than WO3 when operated at 90 degrees C. The sensing mechanism of PPy/WO3 materials to H2S was presumed to be the synergism of PPy and WO3 or the effect of p-n heterojunctions. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：723 / 726

页数：4