Sensing characteristics of tin dioxide/gold sensor prepared by coprecipitation method

被引：44

作者：

Sung, JH ^{[1
]}

Lee, YS ^{[1
]}

Lim, JW ^{[1
]}

Hong, YH ^{[1
]}

Lee, DD ^{[1
]}

机构：

[1] Kyungpook Natl Univ, Sch Elect & Elect Engn, Taegu 702701, South Korea

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2000年 / 66卷 / 1-3期

关键词：

thick film; tin dioxide; gold; methane;

D O I：

10.1016/S0925-4005(00)00319-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

High selective and sensitive thick-film methane sensors were fabricated and their sensing characteristics for various hydrocarbon gases were investigated. SnO2/Au was prepared by coprecipitation method. SEM, TEM, BET and XRD analyses were carried out for investigation of surface morphology and crystalline structure. Pd-added SnO2/Au thick-film devices exhibited high sensitivity to methane gas at operating temperature of 400 degrees C. The sensitivity of SnO2/Au + Pd thick-film devices to methane gas was higher than that of the other gases. The optimal adding amounts of Au and Pd were 1 and 3 wt.%, respectively. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：149 / 152

页数：4

共 7 条

[1] INFLUENCE OF CATALYTIC ACTIVITY ON SEMICONDUCTING METAL-OXIDE SENSORS .1. EXPERIMENTAL SENSOR CHARACTERISTICS AND THEIR QUALITATIVE INTERPRETATION [J].