文献类型：期刊文献

英文题名：Highly sensitive methane catalytic combustion micro-sensor based on mesoporous structure and nanocatalyst

作者：Su, Jiacan[1];Cao, Liehu[1];Li, Liang[2];Wei, Jie[2];Li, Gengnan[2];Yuan, Yinyin[2]

机构：[1]Second Mil Med Univ, Changhai Hosp, Dept Orthopaed, Shanghai 200433, Peoples R China;[2]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2013

卷号：5

期号：20

起止页码：9720

外文期刊名：NANOSCALE

收录：;EI(收录号：20134116824253);WOS:【SCI-EXPANDED(收录号:WOS:000325005500040)】；

基金：This study was supported by National Key Basic Research Program of China, Grant no. 2013CB933201; National Nature Science Foundation of China (Grant no. 21073059, 31271031, 81271705) and the Major Program of Natural Science Foundation of Shanghai, China (no. 11JC1416302).

语种：英文

外文关键词：Catalyst activity - Mesoporous materials - Microsensors - Aluminum oxide - Alumina - Nanocatalysts - Combustion

摘要：In order to get a methane catalytic combustion micro-sensor, two different catalytic systems used in traditional methane catalytic combustion sensors were fabricated into a mesoporous structure and their catalytic activities were investigated. In comparison, the Rh2O3-Al2O3 system can form more a uniform mesoporous structure and has a much higher specific surface area. Even more importantly, it has relatively higher catalytic activity and stability for the methane catalytic combustion reaction. After being coated on a microelectro-mechanical system (MEMS) micro-heater, a catalytic combustion type methane micro-sensor was fabricated. The meso-structured Rh2O3-Al2O3 hybrid based MEMS sensor demonstrated a short T-90 response time, relatively high signal output, high enough signal/noise ratio for practical detecting and strong anti-poison properties.