CuO catalytic membrane as selectivity trimmer for metal oxide gas sensors

被引：164

作者：

Frietsch, M ^{[1
]}

Zudock, F ^{[1
]}

Goschnick, J ^{[1
]}

Bruns, M ^{[1
]}

机构：

[1] Forschungszentrum Karlsruhe, Inst Instrumentelle Analyt, D-76021 Karlsruhe, Germany

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2000年 / 65卷 / 1-3期

关键词：

gas sensor; CuO catalytic membrane; principal component analysis (PCA);

D O I：

10.1016/S0925-4005(99)00353-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Gas sensors based on semiconducting metal oxides were coated with catalytic membranes to improve the selectivity of gas detection. CuO was used to establish a catalytic membrane to develop an active gas filter. The coated gas sensors were tested for their gas-detecting properties by exposure to model gas atmospheres. The catalytic effect of the membranes was examined by analyzing the composition of the gas atmosphere with an FT-IR spectrometer during exposure. To test the discrimination power, eight sensors with and without coating were combined in an array which was exposed to a mixture of two gases. A good selectivity was demonstrated using principal component analysis (PCA). (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：379 / 381

页数：3