Enhanced H2S sensing characteristics of Pt doped SnO2 nanofibers sensors with micro heater

被引：106
作者：
Dong, Ki-Young
Choi, Joong-Ki [2 ]
Hwang, In-Sung [2 ]
Lee, Jin-Woo [3 ]
Kang, Byung Hyun
Ham, Dae-Jin
Lee, Jong-Heun [2 ]
Ju, Byeong-Kwon [1 ]
机构：
[1] Korea Univ, Coll Engn, Display & Nanosyst Lab, Dept Elect Engn, Seoul 136713, South Korea
[2] Korea Univ, Coll Engn, Dept Mat Sci & Engn, Seoul 136713, South Korea
[3] Kyung Hee Univ, Coll Med, Dept Biomed Engn, Seoul 130701, South Korea
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2011年 / 157卷 / 01期
关键词：
SnO2; nanofibers; Micro heater; Gas sensors; Pt-SnO2; H2S sensors; HYDROGEN-SULFIDE; GAS; NANOWIRES; GROWTH; FILMS;
D O I：
10.1016/j.snb.2011.03.043
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Gas sensors were designed and fabricated using oxide nanofibers as the sensing materials on micro platforms using micromachining technology. Pure and Pt doped SnO2 nanofibers were prepared by electrospinning and their H2S gas sensing characteristics were subsequently investigated. The sensing temperatures of 300 and 500 degrees C could be attained at the heater powers of 36 and 94 mW, respectively, and the sensors showed high and fast responses to H2S. The responses of 0.08 wt% Pt doped SnO2 nanofibers to 4-20 ppm H2S, were 25.9-40.6 times higher than those of pure SnO2 nanofibers. The gas sensing characteristics were discussed in relation to the catalytic promotion effect of Pt, nano-scale morphology of electrospun nanofibers, and sensor platform using micro heater. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：154 / 161
页数：8
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