物理化学学报2012，Vol.28Issue(7)：1551-1555,5.DOI:10.3866/PKU.WHXB201205093
准二维无定形碳结构的制备和结构表征
Fabrication and Structure Characterization of Quasi-2-Dimensional Amorphous Carbon Structures
摘要
Abstract
Quasi-2-dimensional total amorphous and half-amorphous carbon structures are fabricated from single-layer or few-layer of graphene via high-energy electron beam irradiation. Sample structures before and after electron beam irradiation are recorded by high resolution imaging and coherent nano-area electron diffraction using transmission electron microscopy (TEM). The atomic pair distribution functions of the sample are obtained from electron diffraction patterns. In the quasi-2-dimensional amorphous carbon material, the carbon hexagonal ring structure is not the main structural feature anymore, and the low order nearest distances between carbon atoms are slightly different from that in perfect graphene. Although the sample shows a long-range disordered atomic arrangement, it still holds short-range order and even middle-range order extending to 0.5 nm, as many zigzag carbon chains remain after electron beam irradiation.关键词
石墨烯/准二维无定形结构/电子束辐照/高分辨成像/电子衍射/原子对分布函数Key words
Graphene/ Quasi-2 dimensional amorphous structure/ Electron beam irradiation/ High resolution imaging/ Electron diffraction/ Atomic pair distribution function分类
化学化工引用本文复制引用
冉珂,陈清,左建民..准二维无定形碳结构的制备和结构表征[J].物理化学学报,2012,28(7):1551-1555,5.基金项目
国家自然科学基金(60925003),科技部重大研究计划(2012CB932702)及美国能源部(DEFG02-01ER45923)资助项目 （60925003）
