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Nanoporous materials: Porous Graphene as an Atmospheric Nanofilter (Small 20/2010)
Author(s) -
Blankenburg Stephan,
Bieri Marco,
Fasel Roman,
Müllen Klaus,
Pignedoli Carlo A.,
Passerone Daniele
Publication year - 2010
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201090068
Subject(s) - nanoporous , materials science , selectivity , porosity , graphene , fabrication , membrane , nanotechnology , polymer , filter paper , chemical engineering , nanostructure , porous medium , nanoscopic scale , composite material , organic chemistry , chemistry , catalysis , medicine , biochemistry , alternative medicine , pathology , engineering
The fabrication of nanoscale membranes exhibiting high selectivity is an emerging field of research. The possibility to use bottom‐up approaches to fabricate a filter with porous graphene and analyze its functionality with first principle calculations is investigated. Here, the porous network is produced by self‐assembly of the hexaiodo‐substituted macrocycle cyclohexa‐ m ‐phenylene (CHP). The resulting porous network exhibits an extremely high selectivity in favor of H 2 and He among other atmospheric gases, such as Ne, O 2 , N 2 , CO, CO 2 , NH 3 , and Ar. The presented membrane is superior to traditional filters using polymers or silica and could have great potential for further technological applications such as gas sensors or fuel cells.