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Title Room temperature ammonia gas sensing characteristics of Co3O4
Authors Shelke, P.N.
Jadkar, S.R.
Khollam, Y.B.
Chakane, S.D.
Adsool, A.D.
Mohite, K.C.
ORCID
Keywords датчик аммиака
датчик аміаку
ammonia sensor
чутливість
чувствительность
sensitivity
воспроизводимость
відтворюваність
repeatbility
response & recovery time
Type Article
Date of Issue 2011
URI http://essuir.sumdu.edu.ua/handle/123456789/27857
Publisher Видавництво СумДУ
License
Citation Room temperature ammonia gas sensing characteristics of Co3O4 [Текст] / P.N. Shelke, S.R. Jadkar, Y.B. Khollam et al. // Journal of Nano- and Electronic Physics. — 2011. — Vol. 3, № 1, Part V : Proceedings of the International Symposium on Semiconductor Materials and Devices (ISSMD-2011), Vadodara, India, 28-30 January 2011. — P. 859-867.
Abstract Room temperature ammonia gas-sensing characteristics of Co3O4 pellet sensor are reported in this paper. For this purpose, Co3O4 powder is prepared by a route of simple precipitation + heating at 800° C/2 hr. The as-prepared powder is characterized by using X-ray diffraction and scanning electron microscopy. The ammonia gas-sensing properties of Co3O4 pellets made at various loads of 3, 5, 7 & 9 ton and at constant time 4 min. are measured using home-built static gas sensing system. The characterization studies revealed that the cobalt oxide particles formed are cubic spinel Co3O4, highly pure and spherical in shape. The particle size distribution is found to be nearly uniform with average particle size ~ 1 μm. The ammonia gas sensing properties of Co3O4 pellet sensor are found to be good. The highest sensitivities – S.F. 175 and 358 are found at ~ 25 ppm and 250 ppm concentrations of ammonia gas respectively for the Co3O4 pellet sensor made at the load 3 ton. Further, an admirable repeatability and reversibility in the ammonia gas sensing characteristics are observed for all the Co3O4 pellet sensors. The average response time of 4.0 min. and recovery time of 3.0 min. are obtained for all the Co3O4 pellet sensors. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/27857
Appears in Collections: Журнал нано- та електронної фізики (Journal of nano- and electronic physics)

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