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Shape‐Customizable Macro‐/Microporous Carbon Monoliths for Structure‐to‐Functionality CO 2 Adsorption and Novel Electrical Regeneration
Author(s) -
Wang Mei,
Li Yuexing,
Pan Min,
Jia Xianfeng,
Yin Di,
Long Donghui,
Wang Jitong,
Qiao Wenming,
Ling Licheng
Publication year - 2017
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.201700088
Subject(s) - monolith , microporous material , materials science , aerogel , adsorption , porosity , chemical engineering , carbon fibers , scroll , activated carbon , desorption , nanotechnology , composite material , mechanical engineering , chemistry , organic chemistry , catalysis , composite number , engineering
Potential of porous carbons for practical applications is often limited by their intrinsic fragility and poor processability. Here, a facile approach to fabricate hierarchically macro‐/microporous carbon monolith (CM) with high strength and integrated structure is developed, which offers great possibilities for structure‐to‐functionality applications. Through a fiber‐reinforced sol–gel process and an ambient pressure drying approach, aerogel‐like CMs can be designed and fabricated in customizable forms. In particular, a novel scroll‐type carbon monolith (S‐CM) is constructed, which can mimic a roll‐to‐roll tube reactor and thus avoid the packing problems arising from the granules or powders of conventional activated carbons. The resulting CM exhibits a high CO 2 adsorption capacity of 15.9 mmol g −1 at 25 bar and a breakthrough capacity of 1 mmol g −1 at 1 bar. Moreover, owing to the integrated structure and good electrical conductivity, the scroll‐type S‐CM can be easily regenerated by employing a low‐energy electrothermal desorption technique. The specialized design of the CMs should fulfill industrial directives and may provide an access route to more efficient porous carbons for structure‐oriented and process‐intensified applications.