Effects of Surface and Morphological Properties of Zeolite on Impedance Spectroscopy-Based Sensing Performance
发表时间：2019-03-09
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- 论文类型：
- 期刊论文
- 第一作者：
- Zhang, Jianwei
- 通讯作者：
- Li, XG (reprint author), Dalian Univ Technol, Key Lab Liaoning Integrated Circuits Technol, Sch Elect Sci & Technol, Dalian 116024, Peoples R China.
- 合写作者：
- Li, Xiaogan,White, Jeremy,Dutta, Prabir K.
- 发表时间：
- 2012-10-01
- 发表刊物：
- SENSORS
- 收录刊物：
- SCIE、EI、PubMed、Scopus
- 文献类型：
- J
- 卷号：
- 12
- 期号：
- 10
- 页面范围：
- 13284-13294
- ISSN号：
- 1424-8220
- 关键字：
- chemical warfare agents; zeolite membranes; chemical gas sensors
- 摘要：
- Measurement by impedance spectroscopy of the changes in intrazeolitic cation motion of pressed pellets of zeolite particles upon adsorption of dimethylmethylphosphonate (DMMP) provides a strategy for sensing DMMP, a commonly used simulant for highly toxic organophosphate nerve agents. In this work, two strategies for improving the impedance spectroscopy based sensing of DMMP on zeolites were investigated. The first one is the use of cerium oxide (CeO2) coated on the zeolite surface to neutralize acidic groups that may cause the decomposition of DMMP, and results in better sensor recovery. The second strategy was to explore the use of zeolite Y membrane. Compared to pressed pellets, the membranes have connected supercages of much longer length scales. The zeolite membranes resulted in higher sensitivity to DMMP, but recovery of the device was significantly slower as compared to pressed zeolite pellets.
- 是否译文：
- 否
