The fabrication and gas-sensing characteristics of the formaldehyde gas sensors with high sensitivity

被引：103

作者：

Chen, T. ^{[1
]}

Liu, Q. J. ^{[1
]}

Zhou, Z. L. ^{[1
]}

Wang, Y. D. ^{[1
]}

机构：

[1] Yunnan Univ, Dept Mat Sci & Engn, Kunming 650091, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2008年 / 131卷 / 01期

基金：

中国国家自然科学基金;

关键词：

formaldehyde; gas sensor; sensor response; In(2)O(3); CdO;

D O I：

10.1016/j.snb.2007.11.025

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学]; 081704 [应用化学];

摘要：

Gas-sensing characteristics of CdO-mixed In(2)O(3) to formaldehyde were investigated. Gas sensors of indirect heating type were fabricated by the sensitive materials. The phases in the resulting materials and the morphologies of the sensing layers were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively, before and after calcination. The effects of operating temperature on the sensor response and the response versus gas concentration properties of the CdO - In(2)O(3) sensors were investigated. It was shown that the sensors exhibited good response properties to formaldehyde gas at low operating temperature, making them to be promising candidates for practical detectors to formaldehyde gas. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：301 / 305

页数：5

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