NDLI: WO$_{3}$ nanomaterials synthesized via a sol-gel method and calcination for use as a CO gas sensor

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Frontiers of Chemical Engineering in China : Volume 8, Issue 1, March 2014

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WO$_{3}$ nanomaterials synthesized via a sol-gel method and calcination for use as a CO gas sensor

Content Provider	Springer Nature Link
Author	Susanti, Diah Diputra, A. A. Gede Pradnyana Tananta, Lucky Purwaningsih, Hariyati Kusuma, George Endri Wang, Chenhao Shih, Shaoju Huang, Yingsheng
Copyright Year	2014
Abstract	Carbon monoxide is a poisonous and hazardous gas and sensitive sensor devices are needed to prevent humans from being poisoned by this gas. A CO gas sensor has been prepared from WO$_{3}$ synthesized by a sol-gel method. The sensor chip was prepared by a spin-coating technique which deposited a thin film of WO$_{3}$ on an alumina substrate. The chip samples were then calcined at 300, 400, 500 or 600 °C for 1 h. The sensitivities of the different sensor chips for CO gas were determined by comparing the changes in electrical resistance in the absence and presence of 50 ppm of CO gas at 200 °C. The WO$_{3}$ calcined at 500 °C had the highest sensitivity. The sensitivity of this sensor was also measured at CO concentrations of 100 ppm and 200 ppm and at operating temperatures of 30 and 100 °C. Thermogravimetric analysis of the WO$_{3}$ calcined at 500 °C indicated that this sample had the highest gas adsorption capacity. This preliminary research has shown that WO$_{3}$ can serve as a CO gas sensor and that is should be further explored and developed.
Starting Page	179
Ending Page	187
Page Count	9
File Format	PDF
ISSN	20950179
Journal	Frontiers of Chemical Engineering in China
Volume Number	8
Issue Number	2
e-ISSN	20950187
Language	English
Publisher	Higher Education Press
Publisher Date	2014-05-29
Publisher Institution	Chinese Universities
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	WO$_{3}$ nanomaterial sol-gel calcinations CO gas sensor sensitivity Industrial Chemistry/Chemical Engineering Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Chemical Engineering

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