Absorption and desorption characteristic of zeolites in gas sensor system

摘要：

Nanosized zeolites as a novel absorbent were investigated targeting for the nerve agent sarin stimulant gas DMMP. Quartz crystal microbalance (QCM) gas sensors modified with Silicalite-1 or Cu-ZSM-5 zeolites synthesized as micro-porous absorbents were fabricated and their gas response characteristics were examined to study the absorption capability of zeolites. The results indicated that Cu-ZSM-5 zeolite has stronger absorption capacity than Silicalite-1 due to the affinity between Cu2+and DMMP. Within our experimental conditions,when desorption temperature is 523K and desorption time is 30 minutes,the Cu-ZSM-5 zeolite not only have optimum desorption properties,also have good repeatability. Compared with Silicalite-1,Cu-ZSM-5 zeolite is a preferable absorption material for chemical warfare agent detection and it also can present a good selective and repeating ability.

关键词： Zeolite Preconcentration QCM DMMP

作者: Wei Yao Yuanyuan Hu Xinming Ji Nan Ren Jia Zhou Yiping Huang Yi Tang

作者单位: ASIC and System State Key Lab,Department of Microelectronics,Fudan University,Shanghai 200433,P.R.Ch Department of Chemistry,Fudan University,Shanghai 200433,P.R.China

会议类型: 国际会议

会议名称: 9th International Conference on Solid-State and Integrated-Circuit Technology(第9届固态和集成电路国际会议)

会议地点: 北京

会议语种:英文

页码: 2589-2592

在线出版日期: 2008-10-20（万方平台首次上网日期，不代表论文的发表时间）