Sensitivity enhancement for CO gas detection using a SnO2-CeO2-PdOx system

被引：31

作者：

Kim, IJ

Do Han, S ^{[1
]}

Singh, I

Lee, HD

Wang, JS

机构：

[1] Korea Inst Energy Res, Sensors & Adv Mat Lab, Taejon, South Korea

[2] Chungnam Natl Univ, Dept Elect, Taejon 305764, South Korea

[3] Maharshi Dayanand Univ, Dept Chem, Rohtak 124001, Haryana, India

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2005年 / 107卷 / 02期

关键词：

SnO2-CeO2-PdOx; composites; sol-get method; CO selective gas sensor;

D O I：

10.1016/j.snb.2004.12.036

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Thick film CO sensors were fabricated using SnO2 loaded with CeO2 and PdO gimel. The composition that gave highest sensitivity for CO was in the wt.% ratio of SnO2:CeO2:PdOx as 94:5:1. The nano-crystalline powders of SnO2-CeO2-PdOx composites synthesized by sol-gel method were screen-printed on alumina substrates. The fabricated sensors were also tested against other gases like H-2, CH4, C3HS, C2H5OH, NOx and SO2. The composite material was found sensitive against CO in the working temperature range between 120 and 180 degrees C, with minor interference of other gases. The CO gas as low as 40 ppm can be detected by the present fabricated sensors. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：825 / 830

页数：6

共 34 条

[31] Mesostructured SnO2 as sensing material for gas sensors [J].