Effects of catalyst support and chemical vapor deposition condition on synthesis of multi-walled carbon nanocoils
Effects of catalyst support and chemical vapor deposition condition on synthesis of multi-walled carbon nanocoils
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DOI：
10.1063/1.4941207
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发表时间：
2016-02
期刊：
影响因子：
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通讯作者：
Y. Suda;T. Iida;H. Takikawa;T. Harigai;H. Ue;Y. Umeda
中科院分区：
文献类型：
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作者：
Y. Suda;T. Iida;H. Takikawa;T. Harigai;H. Ue;Y. Umeda
多壁碳纳米线圈（MWCNC）是一种具有螺旋形状的碳纳米管（CNT）。我们采用化学气相沉积法（CVD）合成了MWCNCs和MWCNTs杂化材料。MWCNCs被认为是一种潜在的纳米器件材料，如电磁波吸收体和场发射体。考虑MWCNCs的纯度非常重要。在本研究中，我们旨在通过改变催化剂制备和CVD条件来提高MWCNCs与MWCNTs的组成比。作为催化剂，通过将Fe 2 O3细粉和Y型沸石（催化剂载体材料）溶解在Fe密度为0.5wt.%的乙醇中来制备Fe 2 O3/沸石沸石密度为3.5wt%。将催化剂涂覆的Si基材立即转移到热板上，并在80°C下加热5 min。类似地，制备Fe 2 O3/Al 2 O3、Co/沸石/Al 2 O3、Co/沸石和Co/Al 2 O3。考察了复合催化剂的不同对MWCNCs合成的影响。CVD反应器在管式炉中加热...
Multi-walled carbon nanocoil (MWCNC) is a carbon nanotube (CNT) with helical shape. We have synthesized MWCNCs and MWCNTs hybrid by chemical vapor deposition (CVD). MWCNCs are considered to be a potential material in nanodevices, such as electromagnetic wave absorbers and field emitters. It is very important to take into account the purity of MWCNCs. In this study, we aimed to improve the composition ratio of MWCNCs to MWCNTs by changing catalyst preparation and CVD conditions. As a catalyst, Fe2O3/zeolite was prepared by dissolving Fe2O3 fine powder and Y-type zeolite (catalyst support material) in ethanol with an Fe density of 0.5wt.% and with a zeolite density of 3.5wt.%. The catalyst-coated Si substrate was transferred immediately onto a hotplate and was heated at 80°C for 5 min. Similarly, Fe2O3/Al2O3, Co/zeolite/Al2O3, Co/zeolite, and Co/Al2O3 were prepared. The effect of the difference of the composite catalysts on synthesis of MWCNCs was considered. The CVD reactor was heated in a tubular furnace ...