期刊
CARBON
卷 48, 期 3, 页码 839-843出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2009.10.037
关键词
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资金
- NNSFC [50632040, 50802116, 50972167]
- Specialized Research Fund for the Doctoral Program of Higher Education [200805581014]
- Natural Scientific Foundation of Guangdong Province [8451027501001421]
A one-step nanocasting method to prepare a bimodal mesoporous carbon from a highly hydrophobic carbon precursor, i.e., petroleum pitch, has been successfully developed by adopting tetrahydrofuran and hydrofluoric acid as solvent and catalyst, respectively, for the gelation reaction of tetraethyl orthosilicate and water. Experimental results show that the introduction of proper amounts of petroleum pitch does not hamper this gelation reaction, thus forming a uniform silica/carbon composite. it was found that the as-prepared nanoporous carbon has a three-dimensional 3.4 nm-sized wormholelike mesoporous network with well-distributed 17.1 nm-sized particlelike mesopores. Such a bimodal mesoporous carbon has a high Brunauer-Emmett-Teller surface area (782 m(2) g(-1)) and a very large total pore volume (3.0 cm(3) g(-1)). (C) 2009 Elsevier Ltd. All rights reserved.
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