期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 160, 期 1, 页码 475-482出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2011.08.014
关键词
Tungsten oxide; Zeolite; Chemical sensor; Environmental monitoring
资金
- EPSRC
- Wolfson trust
- Royal Society
- EPSRC [EP/E021514/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E021514/1] Funding Source: researchfish
Solid-state metal oxide gas sensors with zeolite overlayers have been developed as a means to improve sensor selectivity. Screen printed tungsten oxide (WO3) sensors were modified by the addition of acidic and catalytic zeolite layers. The sensors were characterised before and after sensing experiments using X-ray diffraction, energy dispersive X-ray analysis and scanning electron microscopy. The sensors were tested against various gases and gas mixtures to assess their discriminatory behaviour. The results show that the sensors response can be tailored to be selective towards specific target gases by changing the zeolite; for example the H-ZSM-5 sensor gave a response 19 times greater to NO2 than an unmodified control sensor. It was observed that the WO3 based gas sensors showed a remarkable selectivity towards NO2 in a gas mixture. The sensors also showed high levels of stability and sensitivity and have potential to be used in electronic nose technology. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据