Surface analysis of rayon-based carbon nanofibers and activated carbon fibers

최식영; 김연정; 임우택; 류상훈

오늘 하루 그만보기

P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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P-ISSN 1225-0163
E-ISSN 2288-8985

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Vol.20, No.4

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Surface analysis of rayon-based carbon nanofibers and activated carbon fibers

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

2007, v.20 no.4, pp.296-301

& (2007). Surface analysis of rayon-based carbon nanofibers and activated carbon fibers. , 20(4), 296-301.

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Abstract

Carbon nanofibers (CNFs) are non-microporous materials with a high surface area ($100{\sim}200m^2/g$) and high purity. Therefore, the material has a high potential for use as catalyst support. Activated carbon fibers (ACFs) are of increasing concern with regard to the levels of toxic air pollutants emitted from high-technology industry. Rayon-based CNFs and ACFs was subjected to thermal oxidation under a wide variety of temperature and air conditions to modify the surface properties. Rayon-based CNFs and ACFs were prepared by using thermal chemistry. CNFs were synthesized at temperatures above $600^{\circ}C$ in an air atmosphere and grew with increased temperature and air conditions. After heating at $800^{\circ}C$ for 72 hr, carbonized rayon with ACFs had $2,662m^2/g$ (BET) of surface area and $1.41cm^3/g$ of pore volume. The resulting ACFs had a 99% surface area in which pore size was 10 nm or less, and a 60 % surface area in which pore size was 2 nm or less.