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Size sorting of chemically modified graphene nanoplatelets

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2013, 14(2), pp.89-93
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General

Joong Tark Han 1 장정인 1 김성훈 1 Seung Yol Jeong 1 정희진 1 Geon-Woong Lee 1

1한국전기연구원

Accredited

ABSTRACT

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.

Citation status

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Total Citation Counts(KCI+WOS) (8) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

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