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Synthesis, Characterization and Properties Studies of Alkylated Graphene and Graphene Quantum Dots

Abstract

石墨烯自被发现并报道以来,因其独特的结构和优异的物理化学性质成为物理、化学、材料科学等领域研究的热点。然而已有的制备方法中石墨烯的产率和产量都不尽如人意,合成得到的石墨烯也很难分散在一般的溶剂中,极大地限制了石墨烯在实际领域的应用。因此,发展一种可分散、高质量石墨烯的制备方法成为相关领域中的一个重点和难点课题。此外,纯的石墨烯是零带隙半导体,因此不会有光致发光现象,大大限制了它在光电器件中的应用。最近研究发现,当石墨烯的宽度小于10nm后,由于量子限域效应和边界效应的影响,得到的石墨烯纳米带或石墨烯量子点能够表现出半导体特性。这一发现突破了二维石墨烯材料本身的限制,激起了科学家对石墨烯纳米带和...Graphene has attracted enormous attention over the past few years due, in part, to the remarkable electrical, mechanical, and thermal properties of this new material. However, low yield and throughput remain limiting factors in producing large quantities of materials needed for many practical applications, such as capacitors, fuel cells, catalysts, and sensors. In addition, graphene materials prod...学位:理学硕士院系专业:化学化工学院_无机化学学号:2052011115154

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