CO sensing properties of SnO2-CeO2 mixed oxides

被引:12
|
作者
Chesler, P. [1 ]
Hornoiu, C. [1 ]
Bratan, V. [1 ]
Munteanu, C. [1 ]
Postole, G. [2 ,3 ]
Ionescu, N. I. [1 ]
Juzsakova, T. [4 ]
Redey, A. [4 ]
Gartner, M. [1 ]
机构
[1] Romanian Acad, Ilie Murgulescu Inst Phys Chem, Splaiul Independentei 202, Bucharest 060021, Romania
[2] CNRS, Inst Rech Catalyse & Environm Lyon IRCELYON, 2 Ave Albert Einstein, F-69626 Villeurbanne 9, France
[3] Univ Lyon 1, 2 Ave Albert Einstein, F-69626 Villeurbanne 9, France
[4] Univ Pannonia, Inst Environm Engn, Veszprem, Hungary
关键词
Mixed SnO2-CeO2 oxides; CO sensors; Sensing mechanism; CARBON-MONOXIDE; GAS SENSORS; ELECTRICAL-CONDUCTIVITY; CATALYTIC-PROPERTIES; OXIDATION; SENSITIVITY; DEPENDENCE; FILMS; CERIA;
D O I
10.1007/s11144-015-0970-9
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A series of SnO2-CeO2 powder mixed oxides (with 5, 10, and 20 % wt SnO2) was prepared, characterized and used to study the sensing properties for CO, in absence of oxygen, using a CO-helium mixture. The results have shown that the SnO2-CeO2 powder has good response and recovery characteristics. This powder has better sensitivity to CO than pure SnO2 at the working temperature of 400-450 A degrees C. A sensing mechanism was proposed and discussed in this paper. The results have indicated that the SnO2-CeO2 mixed oxides can be used as CO sensors, in absence of oxygen.
引用
收藏
页码:551 / 563
页数:13
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