以含模板剂的中孔MCM-41为模板合成类碳纳米管材料
以含模板剂的中孔MCM-41为模板合成类碳纳米管材料
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摘要: 以占据MCM41中孔孔道的表面活性剂— 十六烷基三甲基溴化铵(Cetyltrimetylammonium bromide,CTAB)作为碳源,通过模板法合成类碳纳米管材料。使用X射线衍射仪(XRD),N2物理吸附,透射电镜(TEM)和热重分析(TGA)对产品的结构和性能进行了表征。研究表明:此方法能够简便地制备出一种无定形结构的类碳纳米管材料,其中浓硫酸预处理是制备的关键步骤。Abstract: A carbon nanotube analog was prepared using the structuredirecting agent cetyltrimetylammonium bromide locked in the channels of MCM41 as a carbon source. The structures and properties of the resulting samples were characterized by powder XRD, nitrogen adsorptiondesorption measurement, TEM and TGA. It was found that the carbon nanotube analog obtained by this method is amorphous. Pretreatment with concentrated sulfuric acid is a key step in its formation.