School of Chemical Engineering, University of Ulsan, Ulsan 680-749, Republic of Korea; College of Chemistry, Chemical Engineering and Food Safety, Bohai University, 19 Sci-tech Road, Jinzhou 121013, PR China.
School of Chemical Engineering, University of Ulsan, Ulsan 680-749, Republic of Korea.
J Colloid Interface Sci. 2014 Mar 15;418:37-42. doi: 10.1016/j.jcis.2013.12.009. Epub 2013 Dec 11.
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 "molecular wedge" 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.
我们报告了一种通过在有机溶剂中加入萘来进行液相剥离石墨以生产石墨烯片的简便方法。在这项工作中测试的大多数溶剂中，加入萘可显著提高石墨烯的产率。萘作为“分子楔子”插入石墨的边缘，在超声过程中起着关键作用，可显著提高石墨烯的产率。在 1-甲基-2-吡咯烷酮中的分散体的石墨烯浓度高达 0.15mg/mL（超声 90 分钟后），这使得该方法可以轻松地为各种应用生产薄膜和复合材料。
