Oxygen sensing with mesoporous ceria-zirconia solid solutions

被引：41
|
作者：
Abdollahzadeh Ghom, S. [1 ]
Zamani, C. [1 ]
Nazarpour, S. [1 ]
Andreu, T. [1 ]
Morante, J. R. [1 ]
机构：
[1] Univ Barcelona, Dept Elect, MIND IN2UB, ME2, E-08028 Barcelona, Cat, Spain
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2009年 / 140卷 / 01期
关键词：
Oxygen sensing; Mesoporous ceria-zirconia; Solid solution; KIT-6; SBA-15; STORAGE CAPACITY; CATALYSTS; CE;
D O I：
10.1016/j.snb.2009.02.078
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Mesoporous ceria and ceria-zirconia solid solutions are synthesized and tested as an oxygen sensor. Two structures were selected for this study i.e. KIT-6 and SBA-15. Solid solutions are prepared through making replicas of synthesized mesoporous silica where these templates were impregnated with precursor materials. Structural analysis of the products confirmed formation of mesostructures. Existence of two oxidation states of cerium was also verified in XPS spectra of the samples. Thermogravimetry measurements showed large increase of oxygen storage capacity of these solid solutions - as compared to pure ceria - especially for Ce0.95Zr0.05O2 and response measurements show the relatively fast and stable response of the sensor to oxygen-containing atmospheres. (C) 2009 Published by Elsevier B.V.
引用
收藏
页码：216 / 221
页数：6
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