期刊
SCIENTIFIC REPORTS
卷 6, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/srep28052
关键词
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资金
- National Research Foundation of Korea [2009-0083512, 2014R1A2A1A05007760]
- Defense Acquisition Program Administration and Agency for Defense Development [UD100048JD]
- BK 21 Plus Program
- Institute of Advanced Aerospace Technology at Seoul National University
- Industrial Facilities & Infrastructure Research Program - Ministry of Land, Infrastructure and Transport of the Korean Government [13IFIP-B065893-01]
- National Research Foundation of Korea [2014R1A2A1A05007760] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Membranes with atomic level pores or constrictions are valuable for separation and catalysis. We report a graphene-based membrane with an interlayer spacing of 3.7 angstrom (angstrom). When graphene oxide nanoplates are functionalized and then reduced, the laminated reduced graphene oxide (rGO) nanoplates or functionalized rGO membrane is little affected by an intercalated fluid, and the interlayer spacing of 3.7 angstrom increases only to 4.4 angstrom in wetted state, in contrast to the graphene oxide (GO) membrane whose interlayer spacing increases from 9 angstrom to 13 angstrom in wetted state. When applied to ion separation, this membrane reduced the permeation rate of small ions such as K+ and Na+ by three orders of magnitude compared to the GO membrane.
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