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首页> 外文期刊>Applied Surface Science >The effects of catalyst treatment on fast growth of millimeter-long multi-walled carbon nanotube arrays
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The effects of catalyst treatment on fast growth of millimeter-long multi-walled carbon nanotube arrays

机译：催化剂处理对毫米长多壁碳纳米管阵列快速生长的影响

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摘要

An optimized strategy was developed for fast growth of millimeter-long CNT arrays using chemical vapor deposition (CVD). Growth temperature of 800℃ was firstly determined, and catalyst heat treatment conditions were then optimized to probe the full potential of growth rate. 1.5 mm long CNT arrays were obtained in 10min under optimized growth and catalyst heat treatment conditions. The growth rate of CNT arrays strongly depends on the growth temperature and catalyst heat treatment. Insufficient reduction could not reduce iron oxide into metallic state or/and crack down catalyst film into particles, but excessive treatment may result in large particles due to Ostwald ripening process. This method would offer more freedoms in designing the fast growth of high-purity, long CNT arrays.
机译：为使用化学气相沉积（CVD）快速生长毫米长的CNT阵列开发了一种优化策略。首先确定了800℃的生长温度，然后优化了催化剂的热处理条件，以探究生长速率的全部潜力。在优化的生长和催化剂热处理条件下，在10分钟内获得1.5毫米长的CNT阵列。 CNT阵列的生长速度强烈地取决于生长温度和催化剂热处理。还原不足不能将氧化铁还原成金属态或/和将催化剂膜破碎成颗粒，但是过度处理可能由于奥斯特瓦尔德熟化过程而导致大颗粒。该方法将为设计高纯度长碳纳米管阵列的快速增长提供更大的自由度。

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  • 来源
    《Applied Surface Science》 |2011年第17期|p.7704-7708|共5页
  • 作者

    Zhao-Yao Zhan; Ya-Ni Zhang; Geng-Zhi Sun; Lian-Xi Zheng; Kin Liao;

  • 作者单位

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, Nanyang Avenue 50, Singapore 639798, Singapore;

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, Nanyang Avenue 50, Singapore 639798, Singapore;

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, Nanyang Avenue 50, Singapore 639798, Singapore;

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, Nanyang Avenue 50, Singapore 639798, Singapore;

    School of Chemical & Biomedical Engineering, Nanyang Technological University, Nanyang Avenue 70, Singapore 637457, Singapore;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    fast growth; millimeter-long; heat treatment; carbon nanotubes;

    机译：快速增长;毫米长热处理;碳纳米管;

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