利用热蒸发方法在多壁碳纳米管表面沉积Ag纳米颗粒,XRD结果显示，Ag纳米颗粒以晶体形态存在，同时透射电镜分析结果表明，Ag纳米晶颗粒引起碳纳米管横截面形变，从而形成Ag纳米晶颗粒/碳纳米管异质复合材料，这些纳米异质复合材料相互连接，形成网络化分布的结构.
Ag nanoparticles were prepared on the surface of multi-walled carbon nanotubes(MCNTs) by thermal evaporation deposition at room temperature. The morphology and microstructures of Ag/CNTs composites were characterized by SEM,XRD,TEM and HRTEM. The measurement results verify the nanocrystal shape of Ag nanoparticles on the MCNTs. Ag nanoparticles are distributed evenly on the MCNTs and the density of Ag nanoparticles reaches 1011cm－2.Ag nanoparticles present round or elliptical patterns and the round particles have larger diameter than the elliptical ones. The MCNTs are deformed at where Ag nanoparticles grow, which should be attributed to the interaction between Ag nanoparticles and MCNTs during the evolution. The heterojuntion materials are formed by the deformed MCNTs and as-grown Ag nanoparticles. It is found that the heterojuntion materials share mutual connections and constitute a net structure because the chemical bonds between Ag nanoparticles and MCNTs have fixation on reciprocal chiasmata MCNTs. The as-prepared 0-1 dimensional materials have promising applications in sensors, catalysis and optoelectronic devices.
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