多壁碳纳米管/氧化铕复合材料的制备  

Preparation of Multi-Walled Carbon Nanotubes/Europium Oxide Composite

作　　者：陈传盛[1,2] 刘天贵[3] 陈小华[1] 易斌[3] 宁振武[1] 宁振武[1] 朱灿[1] 何晨冲 

机构地区：[1]长沙理工大学,湖南长沙410004 [2]中南大学粉末冶金国家重点实验室,湖南长沙410083 [3]湖南大学,湖南长沙410082

出　　处：《稀有金属材料与工程》2009年第A01期477-480,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50772033;20876016);中国博士后科学基金(200801340;20070420820)资助

摘　　要：利用混合酸对催化裂解法制备的多壁碳纳米管进行纯化,然后先后用氨水和柠檬酸对纯化后的多壁碳纳米管进行修饰,最后利用共沉淀法和热处理制备了碳纳米管氧化铕复合材料,并使用红外光谱、X-衍射仪(XRD)、扫描电镜(SEM)研究了碳纳米管及氧化铕复合材料的结构和形貌。光谱结果表明:经过混合酸纯化后,碳纳米管表面拥有丰富的羟基和羧基等官能团,而且能够在纯化后的多壁碳纳米管表面引入氨基和柠檬酸分子。电子显微图像显示,在450℃下热处理,获得了多壁碳纳米管/氧化铕纳米线复合材料;在750℃下热处理,获得了多壁碳纳米管/纳米氧化铕复合材料。Multi-walled carbon nanotubes （MWCNTs） were purified by immersing them in a 3：1 mixture of concentrated H2504 and HNO3 and then were modified with ammonia and citric acid （CA）, respectively. Then the MWCNTs/europium oxide composite was prepared by co-deposition and heat treatment. Finally, the MWCNTs/europium oxide composite was investigated by X-ray diffraction （XRD）, electron microscopes and IR. The results show that there are many oxygenated functional groups on the surface of the MWNT after the treatment of mixture acid, such as carboxy, hydroxl and carbony. Moreover, the amidocyanogen and CA molecules were introduced onto the surface of MWNTs. The results of electron microscopes illuminate that MWCNTs/Eu2O3 nanowires composites are gained at the heat treatment of 450 ℃, and the MWCNTs/nano-Eu2O3 composites are gained by the treatment of 750 ℃ .

关 键 词：碳纳米管 氧化铕 复合材料 纳米线 

分 类 号：TB383.1[一般工业技术—材料科学与工程]