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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 | Copyright not evaluated |
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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File | Size | Format | Downloads |
---|---|---|---|
Shelke.pdf | 1.23 MB | Adobe PDF | 1885628532 |
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