碳纳米管承载氧化锆纳米粒子的研究

An Investigation of Zirconium Oxide Particles Supported on Carbon Nanotubes

在液相沉淀法制备超细粉的工艺中引入碳纳米管,作为ZrO2的承载体。TEM观察发现添加表面活性剂可以实现碳纳米管对ZrO2的有效承载,未加表面活性剂出现了两者的分离。液相中Zeta电位分布的变化表明表面活性剂的添加有利于碳纳米管在水相中的分散,对工艺机理的研究揭示了表面活性剂其疏水基吸附在碳纳米管表面,而其亲水基与ZrO2水合物结合,在碳纳米管承载氧化锆纳米粒子复合材料制备中起到了桥接作用。

ZrO(2) nanoparticles supported on CNTs were prepared by adding CNTs in liquid-disposition process. The TEM photo showed that CNTs and ZrO(2) nanoparticles would be separated from each other without the surfactant and be connected well when the surfactant was absorbed on the surface of CNTs. The zeta potential of the CNTs in the solution revealed that the surfactant could help them weltering the aquatic phase and enhance the stability of their dispersion. The surfactant had also functioned as bridges, which hydrophilic groups were jointed with the ZrO(2) nanoparticles, and which hydrophobic chains were adhered to the surface of the carbon nanotubes, so the ZrO(2) nanoparticles were supported on the surface of the carbon nanotubes through the surfactant.