High Sensitivity and Selectivity of C-Doped WO3 Gas Sensors Toward Toluene and Xylene

被引:46
|
作者
Deng, Lubin [1 ]
Ding, Xiaohu [1 ]
Zeng, Dawen [1 ]
Zhang, Shunping [2 ]
Xie, Changsheng [2 ]
机构
[1] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, Dept Mat Sci & Engn, Nanomat & Smart Sensors Labs, Wuhan 430074, Peoples R China
关键词
C-doped WO3; selectivity; toluene; xylene; VOLATILE ORGANIC-COMPOUNDS; SENSING CHARACTERISTICS; CARBON; FILMS; MECHANISM; AU;
D O I
10.1109/JSEN.2011.2179980
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
High sensitivity and selectivity of C-doped WO3 gas sensors are reported in this paper. C-doped WO3 is synthesized by a facile infiltration and calcination process using the cotton fibers as templates. The response of C-doped WO3 sensor toward toluene (50 ppm) and xylene (50 ppm) reach 91 and 199, respectively. By comparing the response of C-doped WO3 sensor toward various indoor noxious gases (toluene, formaldehyde, ethanol, methane, benzene, and xylene), distinctive selectivity toward toluene and xylene is found. In addition, C-doped WO3 exhibits relative hygro-stability, differing from traditional gas sensor material. The results indicate that C-doped WO3 has good potential in practical applications, due to its remarkable performance and facile synthesized methods.
引用
收藏
页码:2209 / 2214
页数:6
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