Bottom-up synthesis of two-dimensional carbon with vertically aligned ordered micropores for ultrafast nanofiltration

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Two-dimensional (2D) carbon materials perforated with uniform micropores are considered ideal building blocks to fabricate advanced membranes for molecular separation and energy storage devices with high rate capabilities. However, creating high-density uniform micropores in 2D carbon using conventional perforation methods remains a formidable challenge. Here, we report a zeolite-templated bottom-up synthesis of ordered microporous 2D carbon. Through rational analysis of 255 zeolite structures, we find that the IWV zeolite having large 2D microporous channels and aluminosilicate compositions can serve as an ideal template for carbon rep-lication. The resulting carbon is made of an extremely thin polyaromatic backbone and contains well-defined vertically aligned micropores (0.69 nm in diameter). Its areal pore density (0.70 nm-2) is considerably greater than that of porous graphene (<0.05 nm-2) prepared using top-down perforation methods. The isoporous mem-brane fabricated by assembling the exfoliated 2D carbon nanosheets exhibits outstanding permeance and mo-lecular sieving properties in organic solvent nanofiltration.
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Issue Date
2023-02
Language
English
Article Type
Article
Citation

SCIENCE ADVANCES, v.9, no.6

ISSN
2375-2548
DOI
10.1126/sciadv.ade7871
URI
http://hdl.handle.net/10203/305950
Appears in Collection
CBE-Journal Papers(저널논문)
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