Carbon nanofibers from pyrolysis flame and research on the affecting factors
Synthesis of carbon nanofibers from the V-type pyrolysis flame is a new method and it has wide application prospects. It needs simple laboratory equipments and normal atmosphere pressure. The V-type pyrolysis flame experimental system is introduced, involving V-type pyrolysis flame burner, mass flux controllers, sampling substrate etc. The carbon nanofibers were characterized by scanning electron microscope and transmission electron microscope. Carbon nanofibers with less impurities and high quality can be captured when the temperature was from 800 to 880℃, austenitic stainless steel type304 was served as sampling substrate, nickel nitrate was served as catalyst precursor and sampling time was 5 minutes. The carbon nanofibers are from 100 to 200 nm in diameter and dozens microns in length. The average diameter of catalyst particles is approximately from 20 to 50 nm. The effects of temperature, sampling substrate materials, sampling time and catalyst were analyzed. The temperature determined the diameter and shape of carbon nanofibers. The austenitic stainless steel type304 substrate containing nickel is in favor of synthesis of carbon nanofibers. The number of carbon nanofibers got more and more while the diameter got thicker firstly and then had little change with the sampling time increased within 5 minutes. In addition, experimental results also indicated that carbon nanofibers had much impurity and worse morphology if the diameter of catalyst particles was above 50nm.
carbon nanofiber V-type pyrolysis flame affecting factors scanning electron microscope transmission electron microscope.
LIU Yuan-Chao SUN Bao-Min SHAN Ti-Kun DING Zhao-Yong
Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education, College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266
国际会议
2009 Advanced Polymer Processing(Qingdao)Intl Forum(2009高分子材料先进制造业(青岛)国际论坛
青岛
英文
98-103
2009-08-19（万方平台首次上网日期，不代表论文的发表时间）