From graphite to graphene: direct liquid-phase exfoliation of graphite to produce single- and few-layered pristine graphene
From graphite to graphene: direct liquid-phase exfoliation of graphite to produce single- and few-layered pristine graphene
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从石墨到石墨烯：石墨的直接液相剥离生产单层和多层原始石墨烯
DOI：
10.1039/c3ta12212c
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发表时间：
2013-01-01
影响因子：
11.9
通讯作者：
Zhu, Lihua
中科院分区：
文献类型：
--
作者：
Du, Wencheng;Jiang, Xiaoqing;Zhu, Lihua
石墨烯是碳的二维结晶形式，由于其优异的物理性质以及其表面和边缘可以容易地进行化学改性而引起了广泛和强烈的兴趣。开发大量生产高质量石墨烯的方法对于进一步研究其性质和应用至关重要。直接液相剥离石墨制备石墨烯是一种方便的大量制备理想石墨烯样品的方法。这种涉及使用胶体悬浮液的直接方法基于石墨到石墨烯的一步物理转化，具有许多独特的优点。大量的液体已被用作剥离介质，并显示出一定范围的剥离效率。在这篇综述中，我们强调了在各种液体中，包括有机溶剂，离子液体和水/表面活性剂溶液中，将大块石墨粉末或薄片剥离成单层和少层石墨烯片的最新进展。本文还综述了剥离石墨烯样品的质量和产率，以及它们在各种应用中的用途。此外，未来的研究方向，为开发新的剥离介质和更有效的技术，生产剥离良好的原始石墨烯提出。
Graphene, a two-dimensional crystalline form of carbon, has attracted wide and intense interest owing to its excellent physical properties and because its surface and edges can be chemically modified readily. Development of a method for producing high-quality graphene in large quantities is essential for further investigation of its properties and applications. The direct liquid-phase exfoliation of graphite to produce graphene is a convenient method for generating ideal graphene samples in large quantities. This direct method, which involves the use of colloidal suspensions, is based on the one-step physical transformation of graphite into graphene and has many unique advantages. A large number of liquids have been employed as exfoliation media and show a range of exfoliation efficiencies. In this review, we highlight the recent progress made on the exfoliation of bulky graphite powders or flakes into single- and few-layered graphene sheets in various liquids, including organic solvents, ionic liquids, and water/surfactant solutions. The qualities and yields of the exfoliated graphene samples, as well as their use in various applications, are also reviewed. Furthermore, future research directions for the development of novel exfoliation media and more efficient techniques for producing well-exfoliated pristine graphene are proposed.