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Polymerization under hypersaline conditions : a robust route to pPhenolic polymer-derived carbon aerogels

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Fechler,  Nina
Nina Fechler, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Antonietti,  Markus
Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Citation

Yu, Z.-L., Li, G.-C., Fechler, N., Yang, N., Ma, Z.-Y., Wang, X., et al. (2016). Polymerization under hypersaline conditions: a robust route to pPhenolic polymer-derived carbon aerogels. Angewandte Chemie International Edition, 55(47), 14623-14627. doi:10.1002/anie.201605510.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002B-5280-2
Abstract
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 m2 g−1), and have a large micro- and mesopore volume (0.75 cm3 g−1). The carbon aerogels show very promising potential in the separation/extraction of organic pollutants and for energy storage.