期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 47, 页码 14623-14627出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201605510
关键词
carbon aerogels; hypersaline conditions; phenolformaldehyde resin; porosity; zinc dichloride
资金
- National Natural Science Foundation of China [21431006]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [21521001]
- National Basic Research Program of China [2014CB931800, 2013CB931800]
- Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS [2015HSC-UE007, 2015SRG-HSC038]
- Chinese Academy of Sciences [KJZD-EW-M01-1]
Polymer-derived carbon aerogels can be obtained by direct polymerization of monomers under hypersaline conditions using inorganic salts. This allows for significantly increased mechanical robustness and avoiding special drying processes. This concept was realized by conducting the polymerization of phenol-formaldehyde (PF) in the presence of ZnCl2 salt. Afterwards, the simultaneous carbonization and foaming process conveniently converts the PF monolith into a foam-like carbon aerogel. ZnCl2 plays a key role, serving as dehydration agent, foaming agent, and porogen. The carbon aerogels thus obtained are of very low density (25 mg cm(-3)), high specific surface area (1340 m(2) g(-1)), and have a large micro-and mesopore volume (0.75 cm(3) g(-1)). The carbon aerogels show very promising potential in the separation/extraction of organic pollutants and for energy storage.
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