Zeolite-Modified Discriminating Gas Sensors
Zeolite-Modified Discriminating Gas Sensors
复制标题
DOI：
10.1149/1.3065436
复制
发表时间：
2009-01-01
影响因子：
3.9
通讯作者：
Parkin, Ivan P.
中科院分区：
文献类型：
--
作者：
Binions, Russell;Davies, Helen;Parkin, Ivan P.
使用沸石作为转换层，以提高固态金属氧化物半导体气体传感器的响应和鉴别能力的证明。厚膜传感器的制备是通过丝网印刷三氧化钨或铬钛氧化物层与各种沸石作为覆盖层。传感器的气体响应测试对一氧化碳和乙醇在不同浓度。实验结果表明，它是可以显着改变的设备的响应行为：在乙醇气体的情况下，沸石Y改性的传感器。与未修改的传感器相比，响应增加了2个数量级。计算模型研究表明，催化反应和扩散行为的组合是造成这些变化的原因。这种区别行为在电子鼻和传感器阵列中应该是有用的。(c)2009年电化学学会。[DOI：10.1149/1.3065436]保留所有权利。
The use of zeolites as transformation layers to enhance the response and discriminating power of solid-state metal-oxide-semiconductor gas sensors is demonstrated. Thick film sensors were prepared by screen printing layers of tungsten trioxide or chromium titanium oxide with various zeolites as overlayers. The sensors gas response was tested against carbon monoxide and ethanol in varying concentrations. Experimental result.,; show that it is possible to dramatically alter the response behavior of the devices: in the instance of ethanol gas with a zeolite Y-modified sensor. the response was increased by 2 orders of magnitude compared to the unmodified sensor. Computational modelling studies show that a combination of catalytic reaction and diffusion behavior are responsible for these changes. Such discriminatory behavior should prove useful in electronic noses and sensor arrays. (c) 2009 The Electrochemical Society. [DOI: 10.1149/1.3065436] All rights reserved.