镍催化热解乙炔制备碳纳米纤维

无机材料学报

镍催化热解乙炔制备碳纳米纤维

全慧娟; 席红安; 李勤; 王若钉

中国科学院上海硅酸盐研究所, 上海 200050

收稿日期:2004-05-18 修回日期:2004-07-15 出版日期:2005-05-20 网络出版日期:2005-05-20

Synthesis of Platelet-stacked Carbon Nanofibers by Ni-catalyzed Pyrolysis of Acetylene

QUAN Hui-Juan; XI Hong-An; LI Qin; WANG Ruo-Ding

Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China

Received:2004-05-18 Revised:2004-07-15 Published:2005-05-20 Online:2005-05-20

摘要/Abstract

摘要： 在较低温度(450-800℃)下以氧化铝基板负载的镍为催化剂,催化热解乙炔合成碳纳米纤维.扫描电镜和透射电镜观察表明,反应温度决定碳纳米纤维的尺寸和结构,在550℃下制备的碳纳米纤维一般具有类似弹簧状的结构,而在700℃下制备的碳纳米纤维则偏向于片状堆积结构,并介绍了片状堆积结构的生长机理.

关键词: 碳纳米纤维, 催化热解, Ni催化剂, C₂H₂

Abstract: Carbon nanofibers were synthesized by catalytic pyrolysis of acetylene on Ni-coated alumina flakes at 450-800℃. SEM and TEM observations indicated that the diameters and structure of carbon nanofibers were strongly affected by temperatures, the carbon nanofibers synthesized at 550℃ had a coil-like shape, while the products obtained at 700℃ contained many plateletstacked nanofibers. A growth model was proposed to explain the structure of the platelet-stacked nanofibers.

Key words: carbon nanofibers, catalytic pyrolysis, Ni-catalysts, acetylene

中图分类号:

O613

全慧娟,席红安,李勤,王若钉. 镍催化热解乙炔制备碳纳米纤维[J]. 无机材料学报.

QUAN Hui-Juan,XI Hong-An,LI Qin,WANG Ruo-Ding. Synthesis of Platelet-stacked Carbon Nanofibers by Ni-catalyzed Pyrolysis of Acetylene[J]. Journal of Inorganic Materials.

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