Analysis of the catalytic activity and electrical characteristics of different modified SnO2 layers for gas sensors

被引：72

作者：

Cabot, A ^{[1
]}

Vilà, A ^{[1
]}

Morante, JR ^{[1
]}

机构：

[1] Univ Barcelona, Dept Elect, E-08028 Barcelona, Spain

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2002年 / 84卷 / 01期

关键词：

SnO2; gas sensors; catalytic activity; CH4;

D O I：

10.1016/S0925-4005(02)00010-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this work, the effects of additives on the catalytic properties and electrical characteristics of SnO2, nanopowders are investigated using methane as target gas. For the purpose of this study, Pd, Pt and Au were introduced in sol-gel tin oxide nanopowders. Additives nominal weight concentration used were 0.2 and 2%. In order to obtain different additive chemical states, SnO2 grain size and related to that, different additive surface concentrations, calcination treatments at temperatures up to 1000 degreesC were carried out after additive introduction. Comparison of the catalytic and electrical results is discussed as a function of the additive concentration and calcination temperature. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：12 / 20

页数：9

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