CuO nanowire gas sensors for air quality control in automotive cabin

被引：300

作者：

Kim, Yoon-Sung ^{[1
]}

Hwang, In-Sung ^{[1
]}

Kim, Sun-Jung ^{[1
]}

Lee, Choong-Yong ^{[1
]}

Lee, Jong-Heun ^{[1
]}

机构：

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

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2008年 / 135卷 / 01期

关键词：

CuO nanowires; Thermal oxidation; Automobile ventilation; CO; NO2;

D O I：

10.1016/j.snb.2008.08.026

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

CuO nanowires (NWs) were grown by the thermal oxidation of Cu foil at 400 degrees C and gas sensors were fabricated by the deposition of a solution containing the CuO NWs. At 300-370 degrees C, the sensor resistance increased upon exposure to 30-100 ppm CO. This has been explained by the gas sensing characteristics of the p-type oxide semiconductor. In contrast, the sensor showed two opposite NO2 sensing behaviors; the resistance decreased upon exposure to 30-100 ppm NO2. but increased upon contact with <= 5 ppm NO2. The increase in resistance upon contact with both reducing CO and a low concentration of oxidizing NO2 gases provides a simple and novel sensing algorithm for air quality control in automotive cabins. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：298 / 303

页数：6

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