Large‐Scale Synthesis of MOF‐Derived Superporous Carbon Aerogels with Extraordinary Adsorption Capacity for Organic Solvents

Carbon aerogels (CAs) with 3D interconnected networks hold promise for application in areas such as pollutant treatment, energy storage, and electrocatalysis. In spite of this, it remains challenging to synthesize high‐performance CAs on a large scale in a simple and sustainable manner. We report an...

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Published in:Angewandte Chemie International Edition 2020-01, Vol.59 (5), p.2066-2070
Main Authors: Wang, Chaohai, Kim, Jeonghun, Tang, Jing, Na, Jongbeom, Kang, Yong‐Mook, Kim, Minjun, Lim, Hyunsoo, Bando, Yoshio, Li, Jiansheng, Yamauchi, Yusuke
Format: Article
Language:English
Subjects:
Adsorption
Aerogels
agarose
Carbon
carbon aerogels
Energy storage
Inert atmospheres
mesoporous materials
Metal-organic frameworks
nanoarchitectured materials
Organic solvents
Pollutants
Porosity
Pyrolysis
Specific surface
Surface area
Surface chemistry
Synthesis
Zeolites
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Summary:Carbon aerogels (CAs) with 3D interconnected networks hold promise for application in areas such as pollutant treatment, energy storage, and electrocatalysis. In spite of this, it remains challenging to synthesize high‐performance CAs on a large scale in a simple and sustainable manner. We report an eco‐friendly method for the scalable synthesis of ultralight and superporous CAs by using cheap and widely available agarose (AG) biomass as the carbon precursor. Zeolitic imidazolate framework‐8 (ZIF‐8) with high porosity is introduced into the AG aerogels to increase the specific surface area and enable heteroatom doping. After pyrolysis under inert atmosphere, the ZIF‐8/AG‐derived nitrogen‐doped CAs show a highly interconnected porous mazelike structure with a low density of 24 mg cm−3, a high specific surface area of 516 m2 g−1, and a large pore volume of 0.58 cm−3 g−1. The resulting CAs exhibit significant potential for application in the adsorption of organic pollutants. Walking on air: Metal–organic framework (MOF)‐based carbon aerogels (CAs) were fabricated through a simple and sustainable strategy on a large scale. The obtained CAs show a highly interconnected porous structure with low density (24 mg cm−3), a high specific surface area (516 m2 g−1), and a large pore volume (0.58 cm−3 g−1). The resulting CAs show significant potential for application in the adsorption of organic pollutants.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201913719