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동향자료
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Han, Joong Tark (Nano Carbon Materials Research Group, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute) Jang, Jeong In (Nano Carbon Materials Research Group, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute) Kim, Sung Hun (Nano Carbon Materials Research Group, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute) Jeong, Seung Yol (Nano Carbon Materials Research Group, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute) Jeong, Hee Jin (Nano Carbon Materials Research Group, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute) Lee, Geon-Woong (Nano Carbon Materials Research Group, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute)
저널정보
한국탄소학회 Carbon letters Carbon letters 제14권 제2호
발행연도
2013.1
수록면
89 - 93 (5page)

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Size-sorted graphene nanoplatelets are highly desired for fundamental research and technological applications of graphene. Here we show a facile approach for fabricating size-sorted graphene oxide (GO) nanoplatelets by a simple centrifugal method using different dispersion solvents. We found that the small-sized GO nanoplatelets were more effectively separated when dispersed in water or dimethylformamide (DMF) than in an alkali aqueous solution. After several iterations of the centrifugation, the sizes of GO in the supernatant solution were mostly several micrometers. We found that the GO area was not strongly correlated with the C-O content of the GO dispersed in water. However, the size-sorted GO nanoplatelets in DMF showed different C-O content, since DMF can reduce GO nanoplatelets during exfoliation and centrifugation processes.

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