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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 13, No. 1, 2016, pp. 339-348
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Bioline Code: st16032
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 13, No. 1, 2016, pp. 339-348
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Analytical investigation of CO2 sensor based on carbon strand
Akbari, E.; Buntat, Z.; Afroozeh, A.; Zeinalinezhad, A. & Khaledian, M.
Abstract
This experimental study attempts to design and
develop a novel carbon-based material fabrication method
that implements high voltage AC arc discharge. The carbon-
based material is to be used in an electric circuit to
build up a gas sensing mechanism. After applying a high
AC voltage to the graphite electrodes employed in the
experiment, an arc ignites between the electrodes as the gas
between them is iodized. In the carbon decomposition
process, the arc is employed and results in the fabricated
carbon strands. Thereafter, carbon monoxide (CO2) in the
atmospheric pressure is passed over the electrodes in the
Pyrex glass tube chamber where the carbon strand fabrication
process takes place. An increment appears in the
measured current voltage (I–V) between the two sides of
the carbon strand as the carrier concentration of CO2 gas is
increased from 200 to 800 ppm. Support vector regression
(SVR) algorithm was used for data processing with statistical
analysis for errors and quality control.
Keywords
AC arc discharge; CO2 gas sensor; Support vector regression (SVR); I–V characteristics
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