摘要石墨烯是一种碳的六角型组成的二维结构,其厚度只有1个原子层,是已知材料中最薄的一种。碳碳之间由双键组成,经过sp2杂化以后形成共价键,有一个自由电子,因此,石墨烯有着比较优异的电学性能,热学性能和力学性能等一系列优点。自从2004年首次报道后,就引起了科学界的广泛关注,从而掀起了石墨烯的研究热潮,是继碳纳米管以后又一研究热点。石墨烯的制备主要有机械剥离、外延生长、取向附生法和化学法制备等几种方法,其中化学合成方法的优势是工艺简单,可大批量生产,且耗费低。67180
本毕业设计论文中先后采用了两种不同的化学方法,微波合成法和修正的Hummers法从石墨开始,制备氧化石墨烯GO,然后还原成石墨烯。我们采用扫描电子显微镜镜SEM、原子力显微镜AFM来对石墨烯的形貌、结构进行了表征。
毕业论文关键词 石墨烯;氧化还原法;单层;化学合成
毕业设计说明书(论文)外文摘要
Title Synthesis of graphene with chemical intercalation method
Abstract
Graphene is a material made of carbon only through sp2 orbital hybridization, with one atomic layer thickness. It’s the thinnest one of the known materials. Graphene has excellent electrical conductivity , thermal conductivity and mechanical properties of a series of advantages , since the first reported in 2004 , caused widespread concern in the scientific community,right after the wave of carbon nanotubes. Those two share similarities with same kind of bonding. The synthesis of graphene mainly has four catagories of methods: mechanical exfoliation; epitaxial growth, growth from metal carbon melts, chemical (oxide reduction) synthesis. The advantages of chemical synthesis method is simple, can be mass-produced, and low cost.
This thesis uses two different chemical methods, microwave synthesis and modified Hummers method to prepare graphene. A series of characterization was done such as Scanning electron microscopy SEM, Atomic force microscopy AFM to study the morphology and structure of graphene we have produced.
Keywords graphene;chemical oxidation reduction synthesis;monolayer;chemical intercalation
目 次
1 引言 1
1.1 石墨烯的性质,结构及其制备方法 2
1.2 石墨烯的特性 3
1.2.1 电子运输 3
1.2.2 导电性 3
1.2.3 机械特性 4
1.2.4 电子的相互作用 4
1.2.5 化学性质 4
1.2.6 记忆效应 5
1.3石墨烯的应用前景 5
1.3.1 纳电子器件方面 5
1.3.2 代替硅生产超级计算机 6
1.3.3 光子传感器 6
1.3.4 基因电子测序 6
1.3.5 减少噪音 6
1.3.6 隧穿势垒材料 7
1.3.7 其它应用 7
2 实验部分