无机类富勒烯MoS_2纳米粒子的合成和表征

Synthesis and characterizations of inorganic fullerene-like MoS_2 nanoparticles

提出了一种合成无机类富勒烯过渡金属硫化物纳米粒子的方法．通过Na2MoO4与CHsCSNH2的水热反应合成纳米须状MoS2，然后在氮气气氛中800℃下热处理所合成的纳米须状MoS2，使其转化成无机类富勒烯结构的MoS2纳米粒子．用透射电镜（TEM）、高分辨透射电镜（HRTEM）和X-射线衍射（XRD）对样品进行了表征．结果表明，水热合成的MoS2产物为短纳米须的形貌，热处理后其形貌转化成球形或类球形纳米粒子，并具有嵌套封闭的层状结构．纳米粒子的粒径主要分布在50～120nm，平均粒径为80nm．这种合成方法具有简单和环境友好的优点，可以批量合成无机类富勒烯MoS2纳米材料．

An effective process was presented for the synthesis of inorganic fullerene-like （IF） MoS2 nanoparticles. MoS2 nano-fibrils were synthesized by the hydrothermal reaction between Na2MoO4 and CH3CSNH2, then IF-MoS2 nanoparticles were obtained by the heat treatment of MoS2 nano-fibrils obtained by hydrothermal process in N2 at 800 ℃. The products were characterized by transmission electron microscopy （TEM）, high-resolution transmission electron microscopy （HRTEM） and X-ray diffraction （XRD）. It was found that the as-prepared MoS2 samples by hydrothermal method were nanowhiskers and they changed to the sphere or sphere-like nanoparticles after their annealing, which had nested and closed layer structure. Most of the particles range from 50-100 nm with an average diameter of 80 nm. The method presented in this paper is simple and environment-friendly, and can be used to prepare inorganic fullerene-like MoS2 nanoparticles in large scale.