碳納米纖維的火焰法合成
( 1. 武漢大學(xué) 物理科學(xué)與技術(shù)學(xué)院， 武漢 430072;
2. 武漢大學(xué) 電子顯微鏡中心， 武漢 430072)
摘 要: 提出了一種利用脈沖電鍍法在金屬基板表面沉積一層具有催化活性的鎳納米晶，再將該基板放入乙醇火焰中合成碳納米管(CNTs)和碳納米纖維(CNFs)的方法。 利用光學(xué)顯微鏡和X射線衍射儀（XRD）表征了鍍層鎳納米晶的形貌和晶格特征， 利用透射電鏡（TEM）表征了碳納米管的微觀結(jié)構(gòu)。 實(shí)驗(yàn)研究了基板材料和電鍍時(shí)間等因素對(duì)碳納米管和碳納米纖維合成的影響；初步討論了其生長機(jī)理。
關(guān)鍵字: 脈沖電鍍； 納米晶鎳； 碳納米管； 碳納米纖維； 火焰
pulse plated Ni nanocrystalline substrate in ethanol flames
（ 1. College of Physics and Technology,
Wuhan University， Wuhan 430072, China;
2. Center for Electron Microscopy,
Wuhan University, Wuhan 430072, China）
Abstract: It is introduced a novel method for synthesizing carbon nanotubes (CNTs) and carbon nanofibers (CNFs) in ethanol flames by using a pulse plated Ni nanocrystalline layer on the surface of metal substrates as catalyst. The morphologies of Ni nanocrystalline layer, CNTs and CNFs were characterized by using metallographic microscope, X-ray diffraction (XRD) and transmission electron microscope (TEM) respectively. The effects of substrates and plating time on CNTs and CNFs synthesis process were studied, and the growth mechanisms were discussed preliminarily.
Key words: pulse plating; nanocrystalline nickel; carbon nanotubes; carbon nanofibers; flame
