新型炭材料2012，Vol.27Issue(5)：352-361,10.DOI:10.1016/S1872-5805(12)60021-3
改进化学气相沉积法在炭纤维表面生长碳纳米管
Synthesis of carbon nanotubes on carbon fibers by modified chemical vapor deposition
摘要
Abstract
Carbon nanotubes (CNTs) were synthesized on carbon fibers by a modified thermal chemical vapor deposition (CVD) method.The fibers were first treated at a temperature of 973 K and then treated by a mixture of sulfur acid and nitric acid with a volume ratio of 1∶3 to improve the dispersion of catalyst precursor Fe(NO3)3·9H2O on the surface before impregnation with a catalyst solution.The carbon fibers then underwent simultaneous catalyst reduction and CNT growth to decrease the contact time between the transition metal and the carbon fiber surface,and a uniform and thick CNT forest could be obtained with no significant decrease of the mechanical strength of the carbon fibers compared with those produced by traditional thermal CVD.An in-depth analysis shows that the process parameters have a great influence on the CNT growth rate,such as the type of solvent,concentration of Fe(NO3)3·9H2O,the ratio of H2 to C2H2,and the growth time.It was revealed that a better CNT forest could be obtained when the catalyst solvent is ethanol,the Fe concentration is 100 mmol/L,the ratio of H2/C2H2 is 4/1,the temperature is 1 023 K and the growth time is 30 min.关键词
碳纳米管/炭纤维/表面/前处理/改进的化学气相沉积法Key words
Carbon nanotubes/ Carbon fibers/ Surface / Pretreatment/ Modified CVD method分类
化学化工引用本文复制引用
胡志辉,张翔宇,董绍明,胡建宝,王震,鲁博,杨金山,李庆刚,吴斌,高乐..改进化学气相沉积法在炭纤维表面生长碳纳米管[J].新型炭材料,2012,27(5):352-361,10.基金项目
国家自然科学基金(51002170),中国科学院上海硅酸盐研究所科技创新项目(Y12ZC6160G) （51002170）
