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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.
Carbon nanotubes and their composites have unique and excellent properties and are the research hotspots in the field of nanoscience.Many previous researches mainly focus on the modification and recombination of carbon nanotubes outer wall.In recent years, some theoretical and experimental studies have shown that carbon nanotubes filled with carbon However, the traditional filling methods have the disadvantages of severe filling conditions, low filling efficiency and poor reproducibility, which greatly limits the preparation and application of this type of composite materials.In this paper, A highly oriented aligned carbon nanotube / epoxy porous composite film was successfully filled with carbon dioxide nanowires longer than 100 nm in situ in the pores of carbon nanotubes with a diameter of only 8 nm by hydrothermal method. The experimental results were characterized by high-resolution transmission electron microscopy (HRTEM), energy dispersive X-ray spectroscopy (EDX) and other methods.Compared with the traditional filling method, Our method has the advantages of simple operation, high packing efficiency, the future can be extended to the preparation of other complex structures Filling the composite material of carbon nanotubes, a new sensor, electrode materials and optical devices.