| AlPO_4-5晶体孔道中0.4nm单壁碳纳米管密度改进 |
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| 引用本文： | 翟剑庞,李玲.AlPO_4-5晶体孔道中0.4nm单壁碳纳米管密度改进[J].电子元件与材料,2009,28(8). |
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| 作者姓名： | 翟剑庞 李玲 |
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| 作者单位： | 深圳大学,电子科学与技术学院,广东,深圳,518060 |
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| 基金项目： | 广东省自然科学基金资助项目(No.2008270);;深圳大学科研基金资助项目(No.200844) |
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| 摘 要： | 提出了三种提高AlPO4-5晶体孔道中0.4nm单壁碳纳米管(SWNTs)填充密度和质量的实验方案:(1)用含有更多碳原子的四丙基氢氧化胺替代三正丙胺作为SWNTs碳源;(2)在AlPO4-5晶格中掺杂金属阳离子(Mn2+、Mg2+、Co2+)和硅离子(Si4+),使SWNTs带有负电性和Brφnsted酸位;(3)利用激光快速局部裂解有机碳源分子。结果表明:利用这三种方法均可提高SWNTs的质量和填充密度。
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| 关 键 词： | 单壁碳纳米管 高密度 沸石 拉曼谱 激光微区裂解 |
Density improvement of 0.4 nm single-walled carbon nanotubes inside the channels of AlPO4-5 single crystals |
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| ZHAI Jianpang,LI Ling.Density improvement of 0.4 nm single-walled carbon nanotubes inside the channels of AlPO4-5 single crystals[J].Electronic Components & Materials,2009,28(8). |
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| Authors: | ZHAI Jianpang LI Ling |
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| Affiliation: | College of Electronic Science and Technology;Shenzhen University;Shenzhen 518060;Guangdong Province;China |
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| Abstract: | Three methods were proposed to improve the packed density and quality of 0.4 nm single-walled carbon nanotubes (SWNTs) inside the channels of AlPO4-5 crystals: (1) replacing the initial carbon precursor tripropylamine (TPA) with tetrapropylammonium-hydroxide (TPAOH) which contains more carbon atoms; (2) incorporation of metal cations (Mn2+, Mg2+, Co2+) and Si ion (Si4+) into AlPO4-5 framework, which gives rise to the formation of negatively charged framework and BrΦnsted acid sites; (3) pyrolyzing carbon precursor rapidly and locally by laser. The results show that the packed density and quality of carbon nanotube can be improved by using these three methods. |
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| Keywords: | single-walled carbon nanotube high density zeolite Raman spectrum laser microzone pyrolysis |
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