一步法溶剂热催化合成纳米碳纤维(英文)  

One-pot Catalytic Solvothermal Approach for Carbon Nanofibers Preparation

作　　者：王百年[1] 陈祥迎[2] 钱逸泰[1] 

机构地区：[1]中国科学技术大学化学与材料科学学院,合肥230026 [2]合肥工业大学化学工程学院,合肥230009

出　　处：《无机化学学报》2008年第9期1424-1427,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No20431020)资助项目

摘　　要：利用四氢呋喃为溶剂和碳源,通过溶剂热催化方法在500℃一步合成了纳米碳纤维,X-射线衍射(XRD)分析显示此法合成的碳纤维晶型为碳的六方石墨相,场发射电镜(FESEM)和透射电镜(TEM)照片进一步表明碳纤维平均直径为100nm,长度达几百纳米至几微米,高分辨电镜照片揭示产品中碳的晶间距为0.34nm;产品纯度通过热重法(TGA)分析;同时,拉曼光谱图显示在1347和1584cm-1处有2个强峰,这与石墨相碳的典型拉曼光谱图是一致的。Carbon nanofibers have been synthesized through a one-pot catalytic solvothermal approach using tetrahydrofuran as the solvent and carbon source at 500 ℃. XRD patterns show that the as-prepared carbon nanofibers are of hexagonal graphite. Field-emission scanning electron microscopy（FESEM） and TEM images indicate that the carbon nanofibers have an average diameter of 100 nm and length ranging from hundreds of nanometers to several micrometers. High-resolution transmission electron microscopy （HRTEM） images reveal that the products consist of graphite layers with interlayer spacing of about 0.34 nm. The purity of the carbon nanofibers is also examined by thermal gravimetric analysis （TGA）. The Raman spectrum has two strong peaks at 1 347 and 1 584 cm^-1, corresponding to the typical Raman peaks of graphitized carbon nanofibers.

关 键 词：碳纳米纤维 溶剂热法 催化剂 

分 类 号：O612.4[理学—无机化学] O613.72[理学—化学]