Selective molecular transport through intrinsic defects in a single layer of CVD graphene.
basic_science · Level V
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- Record sourced from PubMed, PMID 23030691.
- Also identified by DOI 10.1021/nn303869m.
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Abstract
We report graphene composite membranes with nominal areas more than 25 mm(2) 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.
Medical subject headings
- Graphite
- Membranes, Artificial
- Porosity