Selective molecular transport through intrinsic defects in a single layer of CVD graphene

Sean C. O'Hern, Cameron A. Stewart, Michael S H Boutilier, Juan Carlos Idrobo, Sreekar Bhaviripudi, Sarit K. Das, Jing Kong, Tahar Laoui, Muataz Atieh, Rohit Karnik

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213 Citations (Scopus)

Abstract

We report graphene composite membranes with nominal areas more than 25 mm2 fabricated by transfer of a single layer of CVD graphene onto a porous polycarbonate substrate. A combination of pressure-driven and diffusive transport measurements provides evidence of size-selective transport of molecules through the membrane, which is attributed to the low-frequency occurrence of intrinsic 1-15 nm diameter pores in the CVD graphene. Our results present the first step toward the realization of practical membranes that use graphene as the selective material.

Original languageEnglish
Pages (from-to)10130-10138
Number of pages9
JournalACS Nano
Volume6
Issue number11
DOIs
Publication statusPublished - 27 Nov 2012
Externally publishedYes

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Keywords

  • filtration
  • graphene membranes
  • nanofiltration
  • nanofluidics

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

O'Hern, S. C., Stewart, C. A., Boutilier, M. S. H., Idrobo, J. C., Bhaviripudi, S., Das, S. K., Kong, J., Laoui, T., Atieh, M., & Karnik, R. (2012). Selective molecular transport through intrinsic defects in a single layer of CVD graphene. ACS Nano, 6(11), 10130-10138. https://doi.org/10.1021/nn303869m