水热法制备氧化镉纳米线内填充碳纳米管阵列  

Vertically aligned carbon nanotubes filled by CdO nanowire with hydrothermal method

作　　者：吴强[1] 张晓华[1] 杨朝晖[1] 

机构地区：[1]苏州大学物理光电能源学部,软凝聚态物理及交叉研究中心,苏州215000

出　　处：《中国科学：化学》2016年第9期867-872,共6页SCIENTIA SINICA Chimica

基　　金：国家自然科学基金(编号:21204059);江苏省特聘教授计划;江苏省创新团队计划(2013);天津工业大学膜分离及膜过程国家重点实验室开放课题(编号:M2-201501)资助项目

摘　　要：碳纳米管及其复合材料具有独特且优异的性能,是纳米科学领域的研究热点.以往的大量研究主要关注碳纳米管外壁的修饰和复合.近年来,一些理论和实验研究显示,填充于碳纳米管纳米孔道中的物质具有很多特殊的性质与应用.然而传统的填充方法存在填充条件苛刻、填充效率低、重现性差等缺点,极大地限制了该类型复合材料的制备与应用.本文采用一种高度取向排列的碳纳米管/环氧树脂多孔复合薄膜为原料,结合水热法成功地在直径仅8 nm的碳纳米管孔道内部原位填充了长度超过100 nm的氧化镉纳米线,并通过高分辨透射电子显微镜(the high-resolution transmission electron microscopy,HRTEM)、能量弥散X-射线光谱(energy dispersive X-ray spectroscopy,EDX)等方法对实验结果进行表征.与传统填充方法相比,我们的方法具有操作简便、填充效率高等优点,未来可推广到制备其他复杂结构的碳纳米管内填充复合材料,用于新型传感器、电极材料及光学器件等.The carbon nanotube（CNT） and relevant composite materials always raise many interests of the scholar due to the unique nature of the structure and the application.Previous studies mostly focus on the modification of the external walls of CNTs.Recently many researches start to reveal unique properties and applications when materials are encapsulated inside the nano-channel of CNTs.However,there are limited reports on such A@CNT materials because classical filling methods have many drawbacks including low filling efficiency,poor reproducibility and complex equipment.Herein we report a new method to efficiently encapsulate CdO nanowire inside the CNT nano-channels with only 8 nm in diameter.We choose a CNT nano-porous membrane as the building block and grow the CdO nanowire with the length over 100 nm within the CNT inner pores by hydrothermal technique.Highresolution transmission electron microscopy（HRTEM） and energy dispersive X-ray spectroscopy（EDX） are used to characterize the structure of CdO@CNT composite.Compared with the traditional method,our technique exhibits more flexibility,efficiency as well as controllability,which have great potentials on the development of other complex CNT-encapsulated materials.

关 键 词：碳纳米管阵列 氧化镉 内填充 水热法 

分 类 号：TB383.1[一般工业技术—材料科学与工程]