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以KI为催化剂气相沉积纳米碳纤维的研究

发表时间:2009-11-30  浏览量:1148  下载量:437
全部作者: 贾明明,张永恒
作者单位: 青岛科技大学材料科学与工程学院
摘 要: 为解决目前以过渡金属Fe,Co,Ni及其合金为催化剂气相沉积制备纳米碳纤维所得到的产物必须用强酸提纯,针对这一过程不易除净杂质、成本高且容易破坏纳米碳纤维形貌的问题,采用可溶性催化剂制备纳米碳纤维。用化学气相沉积(chemical vapor deposition, CVD)法以水溶性的KI为催化剂、乙炔(C2H2)为碳源制得了结构不同的纳米碳纤维,既有螺旋形和线形的纳米碳纤维,也有碳纳米管。实验表明:以KI为催化剂,通过合理控制温度等条件能够制备出理想的纳米碳纤维。
关 键 词: 材料科学基础学科;水溶催化剂;纳米碳纤维;纳米结构;KI
Title: Study on synthesis of carbon nanofibers by chemical vapor deposition using KI catalyst
Author: JIA Mingming, ZHANG Yongheng
Organization: College of Materials Science and Engineering, Qingdao University of Science and Technology
Abstract: Most catalysts used in preparing carbon nanofibers by chemical vapor deposition are transition metals, such as Fe, Co and Ni. Purifying the carbon nanofibers must use strong acids if Fe, Co and Ni metals are used as catalysts. This process costs a lot and some impurities can not be removed easily. At the same time, the structure of nanofibers can be destroyed easily. To solve the above problem, in this study, the carbon nanofibers with helical, linear and hollow structures were obtained by chemical vapor deposition using the water-soluble KI as the catalyst and the acetylene (C2H2) gas as the carbon precursor. The experimental results showed that the perfect carbon nanofibers can be prepared by using KI as the catalyst through controlling the factors such as temperature.
Key words: foundational discipline in materials science; water-soluble catalysts; carbon nanofibers; nano-structure; KI
发表期数: 2009年11月第22期
引用格式: 贾明明,张永恒. 以KI为催化剂气相沉积纳米碳纤维的研究[J]. 中国科技论文在线精品论文,2009,2(22):2373-2377.
 
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