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论文类型： 期刊论文

发表时间： 2008-02-29

发表刊物： MATERIALS LETTERS

收录刊物： SCIE、EI

卷号： 62

期号： 4-5

页面范围： 703-706

ISSN号： 0167-577X

关键字： graphite nanosheets; Raman spectra; nanosized thickness; BET method; nanomaterials; X-ray techniques

摘要： A mixture of natural graphite and HNO3 was used to form graphite intercalation compounds to prepare graphite nanosheets through destroying van der Waals forces between adjacent sheets with detonation technique. The average grain size, microstructure and morphology of the graphite nanosheets were characterized by XRD, TEM and SEM. The specific surface area was tested by nitrogen adsorption and the structure information was obtained from Raman spectra. The results indicated that the prepared graphite nanosheets have two-dimensional plane structure and nanosized thickness. The specific surface area of the nanosheets is 8 times higher than that of the raw graphite. It indicates that detonation method is convenient and effective in preparing graphite nanosheets. (C) 2007 Elsevier B.V. All rights reserved.