载气气氛对Co/MgMoO_4催化剂CVD法高效合成碳纳米材料的影响  

Effect of Carrier Gas on Quality of CVD Synthesized Carbon Nano-materials over High Performance Co/MgMoO_4 Catalyst

作　　者：陶新永[1] 张孝彬[1] 程继鹏[1] 李昱[1] 刘芙[1] 

机构地区：[1]浙江大学硅材料国家重点实验室,材料科学与工程系杭州310027

出　　处：《无机化学学报》2004年第5期563-566,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金资助项目(No.50172043);863资助项目(No.2002AA334020)。

摘　　要：High yield and quality mutli-walled carbon nanotube (MWNT) bundles and carbon nanofibers were synthesized by catalytic decomposition of methane over Co/MgMoO4 catalyst at 1 000 ℃. TEM studies showed that the products were mainly carbon nanofibers without carrier gas and were all MWNT bundles with hydrogen or nitrogen as carrier gas. Thermal gravimetric analyses (TGA) on the raw product indicated that the purity of MWNT was higher than 95wt%. The growth mechanism of carbon nanofibers and MWNTs was also discussed.High yield and quality mutli-walled carbon nanotube (MWNT) bundles and carbon nanofibers were synthesized by catalytic decomposition of methane over Co/MgMoO4, catalyst at 1000 degreesC. TEM studies showed that the products were mainly carbon nanofibers without carrier gas and were all MWNT bundles with hydrogen or nitrogen as carrier gas. Thermal gravimetric analyses (TGA) on the raw product indicated that the purity of MWNT was higher than 95wt%. The growth mechanism of carbon nanofibers and MWNTs was also discussed.

关 键 词：纳米碳管 化学气相沉积法 CVD 载气气氛 催化剂 纳米碳纤维 形态结构 生长机制 钴掺杂钼酸镁 

分 类 号：O635.1[理学—高分子化学] TB383[理学—化学]