Low temperature Pd/SnO2 sensor for carbon monoxide detection

被引：57

作者：

Kim, Beomseok ^{[1
]}

Lu, Yijiang ^{[1
]}

Hannon, Ami ^{[2
]}

Meyyappan, M. ^{[3
]}

Li, Jing ^{[3
]}

机构：

[1] NASA, ELORET Corp, Ames Res Ctr, Moffett Field, CA 94035 USA

[2] NASA, ERC Inc, Ames Res Ctr, Moffett Field, CA 94035 USA

[3] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2013年 / 177卷

关键词：

Carbon monoxide sensor; Low temperature sensing; Palladium doped tin dioxide; Hydroxypropyl cellulose; SNO2; SENSORS; GAS SENSORS; CO; PD; NANOTUBES; FILMS; NO2;

D O I：

10.1016/j.snb.2012.11.020

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The development of a tin oxide nanoparticle based sensor for detecting carbon monoxide at low temperature, 60 degrees C is presented. A combination of three approaches namely, (1) addition of a catalytic metal - 1.5% palladium, (2) optimization of organic binder content, and (3) a proper design of electrodes, leads to high sensitivity, excellent repeatability, and long-term stability in sensor response. The sensors have been tested in dry (<1% RH) and humid (>70% RH) conditions, and no humidity effect on the sensor performance was noticed. The sensors using 15% hydroxypropyl cellulose (HPC) mixed with Pd/SnO2 show sensitivity to CO gas in the parts per million (ppm) level of concentration, 5-10% repeatability in 6-18 ppm CO exposures, and active response for more than 40 days. In addition, the fatigued sensors were recoverable with a brief heating process. Published by Elsevier B.V.

引用

页码：770 / 775

页数：6

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