Fabrication and Characterization of Porous Non-Woven Carbon Based Highly Sensitive Gas Sensors Derived by Magnesium Oxide

Yesol Kim; Se Ho Cho; Sungho Lee; Lee, Young-Seak (이영석)

doi:10.5714/CL.2012.13.4.254

Fabrication and Characterization of Porous Non-Woven Carbon Based Highly Sensitive Gas Sensors Derived by Magnesium Oxide

Carbon Letters
Abbr : Carbon Lett.
2012, 13(4), pp.254-259
DOI : 10.5714/CL.2012.13.4.254
Publisher : Korean Carbon Society
Research Area : Natural Science > Natural Science General > Other Natural Sciences General

Yesol Kim ¹, Se Ho Cho ¹, Sungho Lee ², Lee, Young-Seak ³

¹Chungnam National University
²Korea Institute of Science and Technology
³충남대학교

Accredited

ABSTRACT

Nanoporous non-woven carbon fibers for a gas sensor were prepared from a pitch/polyacrylonitrile (PAN) mixed solution through an electrospinning process and their gas-sensing properties were investigated. In order to create nanoscale pores, magnesium oxide (MgO) powders were added as a pore-forming agent during the mixing of these carbon precursors. The prepared nanoporous carbon fibers derived from the MgO pore-forming agent were characterized by scanning electron microscopy (SEM), N_2-adsorption isotherms, and a gas-sensing analysis. The SEM images showed that the MgO powders affected the viscosity of the pitch/PAN solution, which led to the production of beaded fibers. The specific surface area of carbon fibers increased from 2.0 to 763.2 m^2/g when using this method. The template method therefore improved the porous structure, which allows for more efficient gas adsorption. The sensing ability and the response time for the NO gas adsorption were improved by the increased surface area and micropore fraction. In conclusion, the carbon fibers with high micropore fractions created through the use of MgO as a pore-forming agent exhibited improved NO gas sensitivity.

KEYWORDS

carbon fibers, electrodes, electrospinning, gas sensor, porous carbon

Citation status

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2023-01-02)

Total Citation Counts(KCI+WOS) (13) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

* References for papers published after 2023 are currently being built.

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Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04

Fabrication and Characterization of Porous Non-Woven Carbon Based Highly Sensitive Gas Sensors Derived by Magnesium Oxide

ABSTRACT

KEYWORDS

Citation status

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2023-01-02)

Total Citation Counts(KCI+WOS) (13) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

* References for papers published after 2023 are currently being built.

Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04

Fabrication and Characterization of Porous Non-Woven Carbon Based Highly Sensitive Gas Sensors Derived by Magnesium Oxide

ABSTRACT

KEYWORDS

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KCI Citation Counts (4)

WoS Citation Counts (9) This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2023-01-02)

Total Citation Counts(KCI+WOS) (13) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

REFERENCES (23) * References for papers published after 2023 are currently being built.

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Citation

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2023-01-02)

* References for papers published after 2023 are currently being built.