Carbon nanotubes-CuO/SnO2 based gas sensor for detecting H2S in low concentration

被引：29

作者：

Fan, Jun ^{[1
]}

Liu, Ping ^{[1
]}

Chen, Xiaohong ^{[1
]}

Zhou, Honglei ^{[1
]}

Fu, Shaoli ^{[1
]}

Wu, Wanwan ^{[1
]}

机构：

[1] Univ Shanghai Sci & Technol, Sch Mat Sci & Engn, Shanghai 200093, Peoples R China

来源：

NANOTECHNOLOGY | 2019年 / 30卷 / 47期

基金：

美国国家科学基金会;

关键词：

CuO/SnO2; semiconductors; carbon nanotubes; H2S; gas sensors; SENSING PERFORMANCE; FABRICATION;

D O I：

10.1088/1361-6528/ab3cb3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Porous CuO/SnO2 nanofibers were prepared by co-dissolution and electrospinning, followed by annealing, and compounded with different amounts of carbon nanotubes (CNTs, 0-5 wt%). The performance of the composite based sensor was tested in different concentrations of H2S range from 0.1 to 0.5 ppm. The results showed that the gas sensor based CuO/SnO2 doped by CNTs (CNTs-CuO/SnO2) has a low optimum operating temperature, 40 degrees C, good behavior in detecting low concentration H2S, short response and recovery time (8.3 and 11.5 s, respectively). And at the same time, compared with other gases, 3 wt% CNTs-CuO/SnO2 composite nanomaterial had excellent selectivity to H2S at low concentrations. The prepared gas sensor had great advantages in detecting low concentration H2S.

引用

页数：6

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