会议专题

Flame Synthesis of Carbon Nanotubes and Nanocapsules

Flame synthesis of carbon nanotubes and nanocapsules is demonstrated via a pyramid-shaped pyrolysis flame. The mixture of CO, H2, and nebulized catalyst raw material reacts in a high temperature environment formed inside the frustum of pyramid-shaped reactor heated by premixed flame of C2H2 and air outside. A sampling substrate inserted into the incomplete combusting flame of central reacting mixtures can gain the samples of carbon nanotubes and nanocapsules. The effect of sampling time and catalyst concentration is revealed via Field emission scanning electron microscope (FE-SEM) and High-resolution transmission electron microscopy (HR-TEM). 5-mins sampling time and 0.5/50 (Fe(CO)5/C2H5OH, volume ratio) of catalyst concentration is the most appropriate for carbon nanotubes synthesis. In addition, it is to say that catalyst concentration is the most important one among all the factors that can be used to determine whether the main products are carbon nanotubes or nanocapsules, and the structures of nanocapsules are also analyzed in detail.

Carbon Nanotubes Nanocapsules Pyrolysis flame Sampling time Catalyst concentration FE-SEM HR-TEM

DING Zhao-yong SUN Bao-min JIA Bin DING Xiao-lian

School of Energy, Power and Mechanical Engineering, North China Electric Power University,China School of Electrical and Electronic Engineering, North China Electric Power University, China

国际会议

11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

青岛

英文

116-121

2010-09-25(万方平台首次上网日期,不代表论文的发表时间)