伽玛辐照诱发石墨烯结构的损伤及修复机理研究

项目名称： 伽玛辐照诱发石墨烯结构的损伤及修复机理研究

项目编号： No.11305248

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 张伯武

作者单位： 中国科学院上海应用物理研究所

项目金额： 26万元

中文摘要： 石墨烯因其独特的二维结构和优异的力学，电学和光学等性能引发了广泛的研究兴趣，在能源转换，材料增强和电子器件等领域具有诱人的应用前景。其中，开发低成本高品质石墨烯的制备技术和石墨烯结构修饰与功能调控的方法是石墨烯基材料研究的重要内容。申请人前期研究已证明γ射线辐照能够有效用于石墨烯基材料的制备与功能修饰。本项目拟通过脉冲辐解，电子顺磁共振波谱分析技术，辅以拉曼光谱，13C-NMR，X射线光电子能谱，X射线衍射等结构分析方法，研究γ射线辐照诱发石墨烯基材料的化学结构变化，特别是其石墨化结构损伤与修复的基本机理；并结合样品的相关物化性能的测试，探究石墨烯基材料结构与性能的变化关系，为利用辐照技术制备高品质低成本石墨烯及石墨烯基材料的功能化设计与性能调控提供科学依据和实验基础，促进石墨烯基材料在功能纳米复合材料及微电子器件等领域的应用。

中文关键词： 石墨烯；伽马射线；辐射还原；脉冲辐解；辐射氧化

英文摘要： Graphene has recently sparked great excitement in the scientific community given its unique two-dimensional structure and excellent mechanical, electronic, and optical properties and possesses attractive prospects in the field of energy conversion, material enforcement, and electronic devices. In which, the preparation of low-cost, high-quality graphene and modification of structure and performance are the important issues of graphene-based materials research. Our previous work has proved the γ-ray irradiation technique can be effectively used for preparation and modification of graphene-based materials. This project herein is proposed to study the γ-ray irradiation induced chemical structure changes of graphene-based materials, especially investigate the basic mechanism of the graphitic structure damage and restoration through pulse radiolysis, electron paramagnetic resonance and other structure analysis methods, including 13C-NMR, X-ray photoelectron spectroscopy, X-ray diffraction and so on. In addition, the relationship of structure and properties of graphene-based materials is also planned to explore by combining structural characterization with properties measurement. The results of this project will provide scientific and experimental basis for the preparation of high quality and low-cost graphene and str

英文关键词： graphene；gamma ray；radiation-induced reduction；pulse radiolysis；radiation-induced oxidation