石墨基底对碳/碳化硼复合纳米绳形成的影响  

Effect on Graphite Substrate to Formation of Boron Carbide/Carbon Composite Nanoropes

作　　者：马淑芳[1] 梁建[1] 赵君芙[1] 孙晓霞[1] 许并社[1] 

机构地区：[1]太原理工大学材料科学与工程学院,新材料界面科学与工程教育部重点实验室,太原030024

出　　处：《无机化学学报》2009年第6期1050-1054,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.20471041)资助项目;山西省自然科学基金(No.20071011066)

摘　　要：利用邻碳硼烷(C2H12B10)作为反应原料,二茂铁(C10H10Fe)作为催化剂,通过化学气相沉积法在石墨基片上生长出一种新颖的碳化硼纳米绳。用X射线衍射仪分析纳米绳的相结构,用场发射扫描电子显微镜(FESEM)和高分辨透射电子显微镜(HRTEM)观察纳米绳的微观形貌和结构,结果发现纳米绳的中心部分是碳化硼纳米线,在线的表面有非晶碳绳结,故纳米绳为碳/碳化硼复合物。研究了绳状产物的生长机理,表明石墨基片对产物的形成有至关重要的作用。A type of novel boron carbide nanoropes has been grown on the graphite substrate by chemical vapor deposition method. In this study, o-carborane（C2H12B10） powder was used as a precursor and ferrocene（C10H10Fe） as a catalyst. Phase, microstructures and components of these nanoropes were characterized by X-ray diffractometer （XRD）, scan electron microscopy （SEM） and high-resolution transmission electron microscopy（HRTEM） as well as energy dispersive X-ray spectroscopy（EDS）. It has been found that the boron carbide nanoropes have such a structure of a single crystal wire in the centre of ropes partially covered with amorphous carbon knots. Growth mechanism of boron carbide nanoropes was discussed. It has demonstrated that the substrate of graphite plays a significant role in the formation of nanoropes.

关 键 词：碳化硼 纳米绳 微观结构 生长机理 

分 类 号：O613.71[理学—无机化学] O613.81[理学—化学]