燃烧法合成氧化铁催化剂制备碳纳米管  

Preparation of Carbon Nano-tubes by Synthesizing Ferric Oxide Catalyst with Combustion Method

作　　者：陈易明[1] 张海燕[1] 李顺华[1] 曾国勋[1] 陈进[1] 胡礼初[1] 

机构地区：[1]广东工业大学材料与能源学院,510006

出　　处：《新技术新工艺》2006年第4期115-118,共4页New Technology & New Process

基　　金：广东省自然科学基金(No.036918);广东省科技计划项目(No.2004B10301008);广州市科技计划项目(No.2005Z2-D2051);广东省教育厅自然科学研究项目(No.04Z005)

摘　　要：通过硝酸铁柠檬酸凝胶直接自蔓延燃烧反应制备氧化铁体粉末,使用热重-差热分析法(TG-DSC)分析凝胶的合成温度,比较凝胶的先驱体溶液中柠檬酸和硝酸铁的不同比例对氧化铁体粉末结构和形貌的影响,并以此法制备的氧化铁为催化剂制备碳纳米管。使用SEM,TEM对所制备的碳纳米管的结构和形貌进行表佂,XRD分析表明,使用稀盐酸和浓硝酸能有效的除去产物中残留的催化剂颗粒。Ferric oxide powder was prepared by the self-spreading combustion of the ferric nitrate-citric acid gel, Thermogravimetric-differential thermal analysis （TG-DSC） was employed to analyze the synthesis temperature of the ferric nitrate-citric acid gel. The effect of different ferric nitrate citric acid ratio in the precursor solution on the structure and morphology of the ferric oxide powder was studied by scanning electronic micro scope （SEM）. Carbon nanotubes were prepared by chemical vapor deposition method using the ferric oxide powder as catalyst. The structure and morphology of the prepared carbon nanotubes were studied by transmis sion electron microscope （TEM） and SEM. X-ray diffraction analysis showed that the catalyst parlicle in the carbon nanotubes product could be eliminated by hydrochloric acid and nitric acid.

关 键 词：燃烧法 氧化铁 碳纳米管 化学气相沉积 

分 类 号：TB321[一般工业技术—材料科学与工程]