Liquid-phase exfoliation of graphene in organic solvents with addition of naphthalene
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- 作者：Jiasheng Xu ; Dinh Khoi Dang ; Van Tam Tran ; Xiaoyang Liu ; Jin Suk Chung ; Seung Hyun Hur ; Won Mook Choi ; Eui Jung Kim ; Paul A. Kohl
- 关键词：Graphene ; Naphthalene ; 蟺&ndash ; 蟺 Interaction ; Liquid-phase exfoliation
- 刊名：Journal of Colloid and Interface Science
- 出版年：15 March, 2014
- 年：2014
- 卷：418
- 期：Complete
- 页码：37-42
- 全文大小：1626 K
文摘
We report a facile method for the production of graphene sheets through liquid-phase exfoliation of graphite in organic solvents with addition of naphthalene. The production yield of graphene is significantly increased with the addition of naphthalene in most solvents tested in this work. Naphthalene serves as a 鈥渕olecular wedge鈥?to intercalate into the edge of graphite, which plays a key role during sonication and significantly improves the production yield of graphene. The graphene concentration of the dispersion in 1-methyl-2-pyrrolidinone is as high as 0.15 mg/mL (after sonication for 90 min), which allows this method to easily produce films and composites for a range of applications.