Abstract
A series of new highly exfoliated graphites were synthesized from fluorinated graphite intercalation compounds of compositions C 2F·xR (R = ClF3, (CH3)2CO, CH3CN, C6H6, CCl4). The exfoliation degree of these materials reaches more than 2000 times, indicating a significantly higher exfoliated state than observed for the conventional expanded graphites derived from graphite bisulphate or nitrate. These exfoliated graphites have increased interlayer distances, specific surface areas as high as 170-370 m2/g, low bulk densities of 0.4-0.7 g/L, and good sorption capacities towards a range of organic and inorganic liquids. The influence of the nature of the intercalated molecules on the properties of the exfoliated graphite is discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 3233-3241 |
| Number of pages | 9 |
| Journal | Carbon |
| Volume | 49 |
| Issue number | 10 |
| DOIs | |
| State | Published - Aug 2011 |
Bibliographical note
Funding Information:This work was supported by grant from Korean Defense Acquisition Program Administration & Agency for Defense Development . We are grateful to Ms. J.-E. Park from Ewha Womans University (Korea) and to Dr. J.V. Veselovskaya and Dr. M.M. Tokarev from Borescov Institute of Catalysis of the Siberian branch of the Russian Academy of Sciences (Russia) for BET measurements and to Prof. V.V. Avdeev from Lomonosov Moscow State University (Russia) for the samples of expanded graphites derived from graphite nitrate. E.D.G. wishes to thank Russian Science Support Foundation for their grant “The best postgraduates of RAS” and Novosibirsk Region Administration and Haldor Topsoe for their PhD scholarships.