Synthesis of Carbon Nanofibers by Ethanol Catalytic Combustion
The effects of position of substrates in flames, preparation time, stability of flames and catalyst precursors on carbon nanofibers are investigated in ethanol catalytic combustion. For investigating the effects of these influence factors on carbon nanofibers, several sets of controlled experiments are performed, such as different position of substrates, different preparation time, stable and unstable flames, different catalyst precursors. In our experiments, the catalyst precursors are iron nitrate, cobalt nitrate, nickel nitrate, and iron chloride, cobalt chloride, nickel chloride. The as-synthesized products are characterized by scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy. Our results show that the optimal position of substrates in flames is more than 1cm and less than 2.5cm for massive yield, the optimal preparation time is more than 5min and less than 30min for massive yield, stable flames would be tent to synthesize carbon nanofibers with single-type morphology and could improve the graphitization of carbon nanofibers, and the catalyst precursors have obvious effects on carbon nanofibes.
Influence factors ethanol catalyst combustion carbon nanofibers
程进 邹小平 张红丹 李飞
北京信息工程学院传感技术研究中心,北京市传感器重点实验室,北京 100101;北京邮电大学电子工程学院,北京 100876 北京信息工程学院传感技术研究中心,北京市传感器重点实验室,北京 100101
国际会议
成都
英文
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）