Understanding the high sensitivity of parallel WO3 sensor toward NO2 gas at low temperature

被引：1
|
作者：
Yan, Aihua [1 ]
Xie, Changsheng
Huang, Fei [1 ]
Li, Huayao
Zhang, Shaoliang [1 ]
机构：
[1] China Univ Min & Technol, Low Carbon Energy Inst, Xuzhou 221008, Peoples R China
来源：
ADVANCES IN CHEMICAL, MATERIAL AND METALLURGICAL ENGINEERING, PTS 1-5 | 2013年 / 634-638卷
关键词：
WO3; hydrothermal method; high sensitivity; parallel circuit; SENSING CHARACTERISTICS; FORMATION MECHANISM; FILMS;
D O I：
10.4028/www.scientific.net/AMR.634-638.3866
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Tungsten trioxide (WO3-x) with different morphologies was synthesized by hydrothermal method. Using a pair of Pt electrodes and Al2O3 ceramics tube as a substrate, NO2 sensing properties of the WO3 products were measured at different working temperatures. And the high sensing properties at low working temperature were also investigated. The results showed that the sensitivity of WO3 product is strongly dependent on morphology and structure. The parallel circuit mode also plays an important role in the NO2 sensing characteristics. The low working temperature can be attributed to the competitive reaction between O-2 and NO2 gas. The parallel mode may increase the lifetime of sensor.
引用
收藏
页码：3866 / 3869
页数：4
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