Preparation of sulfonated reduced graphene oxide by radiationinduced chemical reduction of sulfonated graphene oxide

정찬희; 홍지현; jin-mook jung; Hwang In-Tae; Chan-Hee Jung; Choi， Jae-Hak

Carbon Letters

Abbr : Carbon Lett.
2015, 16(1), pp.41-44
Publisher : Korean Carbon Society
Research Area : Other Natural Sciences General

정찬희 ¹, 홍지현 ², jin-mook jung ³, Hwang In-Tae ⁴, Chan-Hee Jung ⁵, Choi， Jae-Hak ⁶

¹한국원자력연구원
²충남대학교
³충남대학교
⁴한국원자력연구원
⁵한국원자력연구원
⁶충남대학교

ABSTRACT

We report the preparation of sulfonated reduced graphene oxide (SRGO) by the sulfonationof graphene oxide followed by radiation-induced chemical reduction. Graphene oxideprepared by the well-known modified Hummer's method was sulfonated with the aryldiazonium salt of sulfanilic acid. Sulfonated graphene oxide (SGO) dispersed in ethanolwas subsequently reduced by γ-ray irradiation at various absorbed doses to produce SRGO. The results of optical, chemical, and thermal analyses revealed that SRGO was successfullyprepared by γ-ray irradiation-induced chemical reduction of the SGO suspension. Moreover,the electrical conductivity of SRGO was increased up to 2.94 S/cm with an increase of theabsorbed dose.
KEYWORDS

sulfonated reduced graphene oxide, graphene oxide, sulfonation, reduction, γ-ray irradiation.
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