Synthesis of Carbon Nanofibers: A Catalyst Derived from Cupric Carbonate Basic During Acetylene Decomposition
Two types of helical and straight carbon nanofibers, have been synthesized by the decomposition of acetylene using cupric carbonate basic as catalyst precursor at low temperature. The obtained carbon nanomaterials were characterized by transmission electron microscope, scanning electron microscope, and X-ray power diffraction. The size of the catalyst nanoparticles remaining inside the resultant nanofibers was determined. The carbon nanofiber diameters, ranging from 30 to 400 nm, closely correlated with the size of the catalytic nanoparticle. The growth mechanism of carbon nanomaterials was also studied. The nanocopper particle size had a considerable effect on the morphology of carbon nanofibers. The helical carbon nanofibers with a symmetric growth mode were synthesized with the nanocopper catalyst particles having a grain size less than 50 nm. When the average catalyst particle size determined was around 50–300 nm, the straight carbon nanofibers were obtained dominantly.
Carbon Nanofiber Helical Straight Catalyst Size
Liyan YU Lina SUI Zuolin CUI
College of Materials Science and Engineering, Qingdao University of Science and Technology,Zhengzhou Road, Qingdao, 266042, China
国际会议
重庆
英文
579-584
2008-06-09（万方平台首次上网日期，不代表论文的发表时间）