Nanocarbons by High-Temperature Decomposition of Graphite Oxide at Various Pressures
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- 作者：Alexandr V. Talyzin ; Tams Szab ; Imre Dkny ; Falko Langenhorst ; Petr S. Sokolov ; Vladimir L. Solozhenko
- 刊名：Journal of Physical Chemistry C
- 出版年：2009
- 出版时间：July 2, 2009
- 年：2009
- 卷：113
- 期：26
- 页码：11279-11284
- 全文大小：308K
- 年卷期：v.113,no.26(July 2, 2009)
- ISSN：1932-7455
文摘
Thermal decomposition of graphite oxide into nanocarbons at pressures from ambient to 5 GPa has been studied by using X-ray diffraction, Raman spectroscopy and TEM. The temperature of graphite oxide decomposition at 5 GPa is close to the temperature of graphite oxide exfoliation at ambient pressure; however, materials formed are strongly dependent on pressure. High-pressure conditions favor formation of rounded graphitic nanoparticles, while exfoliation at ambient pressure results in preservation of paper-like wrinkled micrometer size sheets (with thickness of a few graphene layers) typical for pristine graphite oxide.