期刊
CARBON
卷 48, 期 12, 页码 3420-3426出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2010.05.037
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资金
- National Nature Science Found of China [20871075, 20971079]
- 973 Project of China [2005CB623601]
- Independent Innovation Foundation of Shandong University (IIFSDU)
- Taishan Scholar Project of Shandong province
Leaf-like carbon sheets have been obtained by the pyrolysis of dichloromethane and ferrocene in an autoclave in 300-600 degrees C on Cu ribbons for 90 min. The thickness of the sheets could be controlled from 50 to 200 nm by adjusting the experimental parameters. The formation process was studied by observing product-evolution utilizing the real-time imaging capabilities of emission scanning electron microscope, and it is considered that Diffusion-Limited Aggregation mechanism could be responsible for their growth. Thermo-gravimetric analysis curves show that the initial thermal decomposition temperature of the carbon sheets increases from 300 to 420 degrees C with the increasing preparation temperature. The Brunauer-Emmett-Teller specific surface area was 398 m(2)/g and with a narrow pore distribution in the range of 2-5 nm. By changing the carbon sources, solid carbon spheres as well as chain-like solid carbon spheres (3-5 mu m) could be selectively prepared using one-pot reactions. (C) 2010 Elsevier Ltd. All rights reserved.
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