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http://dx.doi.org/10.14478/ace.2011.22.3.243

Hydrogen Sensing Property of Porous Carbon Nanofibers by Controlling Pore Structure and Depositing Pt Catalyst  

Kang, Seok Chang (Department of Fine Chemical Engineering Applied Chemistry, Chungnam National University)
Im, Ji Sun (Department of Fine Chemical Engineering Applied Chemistry, Chungnam National University)
Lee, Young-Seak (Department of Fine Chemical Engineering Applied Chemistry, Chungnam National University)
Publication Information
Applied Chemistry for Engineering / v.22, no.3, 2011 , pp. 243-248 More about this Journal
Abstract
Pt deposited porous carbon nanofibers was prepared as a highly sensitive material of hydrogen gas sensor operating at room temperature. Nanofibers was obtained by electrospinning method using polyacrylonitrile as a carbon precursor and then thermally treated for carbon nanofibers. Chemical activation of carbon nanofibers was carried out to enlarge specific surface area up to $2093m^2/g$. Sputtered Pt layer was uniformly distributed keeping the original shape of carbon nanofibers. The hydrogen gas sensing time and sensitivity were improved based on effects of high specific surface area, micropore structure and deposited Pt catalyst.
Keywords
hydrogen sensor; Pt; porous carbon nanofiber; electrospinning; chemical activation;
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