物理化学学报 >> 2004, Vol. 20 >> Issue (10): 1233-1238.doi: 10.3866/PKU.WHXB20041013

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Ni-Mo双金属氧化物催化剂CVD法大量制备成束多壁纳米碳管

李昱;张孝彬;陶新永;王幼文;刘芙;许国良   

  1. 浙江大学材料物理与微结构研究所; 浙江大学硅材料国家重点实验室; 浙江大学分析测试中心,杭州　310027
  • 收稿日期:2004-02-24 修回日期:2004-06-07 发布日期:2004-10-15
  • 通讯作者: 张孝彬 E-mail:zhangxb@zju.edu.cn

Ni-Mo Bi-Metallic Oxide Catalyst for Large-scale Synthesis of Bundled Multi-walled Carbon Nanotubes by CVD

Li Yu;Zhang Xiao-Bin;Tao Xin-Yong;Wang You-Wen;Liu Fu;Xu Guo-Liang   

  1. Institute of Material Physics and Microstructures; State Key Laboratory of Silicon Materials; Analysis and Measurement Center, Zhejiang University, Hangzhou　310027
  • Received:2004-02-24 Revised:2004-06-07 Published:2004-10-15
  • Contact: Zhang Xiao-Bin E-mail:zhangxb@zju.edu.cn

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摘要： 采用溶胶凝胶法合成的Ni-Mo双金属氧化物催化剂,用CVD法催化裂解甲烷从而大量制备高质量高纯度的成束多壁纳米碳管.实验结果表明,该催化剂具有很高的活性和催化效率.反应2 h后,制备的多壁纳米碳管的量可达到初始催化剂量的80倍以上.碳管的直径较均匀,在10～20 nm之间.随着反应时间的延长,制备的纳米碳管石墨化程度增加,反应1 h后,粗产品中纳米碳管的含量就超过了97％. 简单放大后,单炉每克催化剂可以在0.5 h内制得40 g以上多壁纳米碳管.

关键词: 多壁纳米碳管束, 溶胶凝胶法, 化学气相沉积法

Abstract: Ni-Mo bi-metallic oxide catalyst prepared by a sol-gel method has been used to synthesize high quality multi-walled carbon nanotube bundles with high purity by catalytic decomposition of CH4. The experiment reveals that the prepared catalysts have high activity and high efficiency. After reaction for 2 h, the quantity of synthesized MWNTs is over 80 times of the pristine catalysts. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), thermal gravimetric analysis (TGA), powder X-ray diffraction (XRD) and laser Raman spectroscopy have been performed to characterize the synthesized MWNT bundles. The results show that the synthesized MWNT bundles have a diameter distribution about 10～20 nm. The longer the reaction time is, the graphitization degree of the synthesized MWNT bundles is. After reaction for 1 h, the MWNT bundles with a high purity of more than 97％can be obtained. With a simple enlarged process, a single furnace can produce over 40 g MWNTs for 1 g of catalyst in 30 min.

Key words: Multi-walled carbon nanotubes bundles, Sol-gel method, Chemical vapor deposition