Metal–organic frameworks grown on a porous planar template with an exceptionally high surface area: promising nanofiller platforms for CO2 separation

Porous nanosheets made of effectively aligned zeolitic imidazolate framework-8 (ZIF-8), dubbed ZPGO, with an exceptionally high surface area (2170 m2 g−1) were demonstrated. This composite was prepared by growing ZIF-8s on highly porous graphene oxide (PGO) and the mixed matrix membrane with such a...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2017, Vol.5 (43), p.22500-22505
Main Authors: Lee, Hyunhee, Seul Chan Park, Roh, Ji Soo, Moon, Gi Hyeon, Shin, Jae Eun, Kang, Yong Soo, Park, Ho Bum
Format: Article
Language:English
Subjects:
Carbon dioxide
Metal-organic frameworks
Permeability
Surface area
Online Access:Get full text
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Summary:Porous nanosheets made of effectively aligned zeolitic imidazolate framework-8 (ZIF-8), dubbed ZPGO, with an exceptionally high surface area (2170 m2 g−1) were demonstrated. This composite was prepared by growing ZIF-8s on highly porous graphene oxide (PGO) and the mixed matrix membrane with such a nanofiller showed drastically improved size-selective CO2 transport even at very low filler concentration (0.02 wt%) especially under mixed gas conditions where both selectivity (CO2/N2 ∼57) and CO2 permeability (∼163 barrer) were significantly enhanced. In addition to this, ZPGO effectively suppressed CO2-plasticization, which indicates great potential in real operations. This new concept of nanofillers is expected to maximize the filler effect in other fields benefitting from a high surface area as well.
ISSN:2050-7488
2050-7496
DOI:10.1039/c7ta06049a