Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1482298 | Journal of Non-Crystalline Solids | 2011 | 4 Pages |
Abstract
Ultrahigh-pore-volume carbon aerogels were synthesized by adding rigid silica nanoparticles to resorcinol-formaldehyde sols, followed by supercritical drying, pyrolysis and HF leaching. The presence of silica nanoparticles in polymer gels dramatically inhibits volume shrinkage and framework collapse during the supercritical drying and pyrolysis processes, resulting in the obtained carbon aerogels exhibiting very low bulk density and high pore volume. By changing the mass ratio of silica nanoparticles/resorcinol-formaldehyde resin, pore volumes of carbon aerogels can be tuned in the range of 2.8–6.0 cm3/g.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Qingjun Chen, Donghui Long, Liang Chen, Xiaojun Liu, Xiaoyi Liang, Wenming Qiao, Licheng Ling,