Design of selective gas sensors using electrospun Pd-doped SnO2 hollow nanofibers

被引：233

作者：

Choi, Joong-Ki ^{[1
]}

Hwang, In-Sung ^{[1
]}

Kim, Sun-Jung ^{[1
]}

Park, Joon-Shik ^{[2
]}

Park, Soon-Sup ^{[2
]}

Jeong, Unyong ^{[3
]}

Kang, Yun Chan ^{[4
]}

Lee, Jong-Heun ^{[1
]}

机构：

[1] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea

[2] Korea Elect Technol Inst, Convergence Sensor & Device Res Ctr, Kyunggido 463816, South Korea

[3] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea

[4] Konkuk Univ, Dept Chem Engn, Seoul 143701, South Korea

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2010年 / 150卷 / 01期

关键词：

Gas sensors; Electrospinning; Selective detection; Hollow nanofibers; Pd-SnO2; SENSING PROPERTIES; FABRICATION; CO; HYDROGEN; NANOPARTICLES; SENSITIVITY; COMPOSITE; ETHANOL; METHANE; MODEL;

D O I：

10.1016/j.snb.2010.07.013

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Undoped and Pd-doped SnO2 hollow nanofibers were prepared by single capillary electrospinning and their gas sensing characteristics for 100 ppm H-2, 100 ppm CO, 500 ppm CH4, and 100 ppm C2H5OH were investigated The gas responses and responding kinetics were closely dependent upon the sensor temperature and Pd doping concentration The undoped and 0.08 wt% Pd-doped SnO2 nanofibers showed selective detection to C2H5OH at 385 and 440 degrees C. In the 0.4 wt% Pd-doped SnO2 nanofiber sensor, the selective detection to CH4 and H-2 was optimized at 440 degrees C with the minimum cross-sensitivity to C2H5OH. The tuning of gas selectivity via the combinatorial control of Pd doping concentration and sensor temperature in the electrospun hollow nanofibers was discussed in relation to the gas sensing mechanism (C) 2010 Elsevier B V All rights reserved.

引用

页码：191 / 199

页数：9

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