【摘要】 以乙炔(C2H2)为碳源,铁为催化剂,通过化学气相沉积技术在单晶硅衬底上制备了碳纳米带。采用场发射SEM、TEM、激光Ram an光谱等先进分析手段对其形态和结构进行了表征。研究发现:碳纳米带是一种准二维材料,厚度约30nm,宽度在几百纳米,长度在100μm量级。碳纳米带的碳层沿着与其生长轴方向一致的(002)晶向排列,碳层的边缘都弯曲折叠成封闭结构。碳纳米带中碳层的排列不很平直,其中存在大量的层错。由此认为碳纳米带可用于能源等领域。更多还原

【Abstract】 Carbon nanoribbons（CNRs） are obtained by Fe catalyzed chemical vapor deposition on a silicon substrate using C₂H₂ as carbon source.The morphology and microstructure of this novel carbonaceous material was observed by field emission scanning electron microscopey,high-resolution transmission electron microscopy and Raman spectroscopy.It is found that CNRs are of the order of 100 μm long,and most have a nearly rectangular transverse section several hundred nanometers wide and 30 nm thick.The carbon layers of the CNRs have an uniform orientation perpendicular to the ribbon axis;the orientation is characterized to be the（002） direction.The microstructure of the CNRs arises from stacked open sheets of carbon layers,and the ridges of carbon layers are folded every several layers.The arrangement of carbon layers in CNRs is not very regular,and many stacking faults have been found.Potential applications of CNRs as energy materials are suggested.更多还原