四氧化三铁/碳纳米管复合材料的制备及对放射性废水中铜离子的吸附  

Preparation of Ferroferric Oxide/Carbon Nanotube Composite Material and Its Adsorption Toward Copper Ion from Radioactive Waste Water

作　　者：代明珠[1] 李俊[1] 康斌[1] 任超[1] 戴耀东[1] 董宇[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,南京210016

出　　处：《材料导报》2013年第10期83-86,共4页Materials Reports

基　　金：国家自然科学基金(81071256;81101146);江苏省自然科学基金(BK2011738;BK2011739)

摘　　要：采用热分解法制备了一种功能性的四氧化三铁/碳纳米管复合材料,磁性四氧化三铁纳米粒子均匀地修饰在多壁碳纳米管表面,而且无团聚现象出现。同时由于复合材料具有超顺磁性,通过外加磁场可以很简单地将其从溶液中分离出来。将该复合材料作为吸附剂用于去除放射性废水中的铜离子,复合材料的吸附作用不仅对时间有很强的依赖性,而且能够高效地去除铜离子,并能通过外加磁场实现快速分离。这种四氧化三铁/碳纳米管复合材料有望成为一种很好的用于放射性废水处理的吸附剂。A functional ferroferric oxide/carbon nanotube composite material was prepared by thermal decom position. Muhi-walled carbon nanotubes （MWNTs） were decorated with magnetic iron oxide nanopartieles, with an uniform distribution on the nanotube surface, no reunion phenomenon to appear. Because the composite materials exhibited superparamagnetic behavior and could be easily separated from the solution via a magnetic process, this MWNTiron oxide composites might serve as adsorbent for contaminant adsorption from radioactive wastewater, especially for copper ion removal. The adsorption of MWNT-iron oxide composites toward copper ion was time dependent, and the composites could be efficiently removed through a magnetic separation process. This magnetic nanoparticle decorated carbon nanotubes might be an efficient and proper adsorbent in wastewater treatment applications.

关 键 词：多壁碳纳米管 四氧化三铁 吸附剂 铜离子 超顺磁 

分 类 号：TL941.1[核科学技术—辐射防护及环境保护]