纳米粒子的制备方法及应用

当粒子尺寸达到纳米量级时，粒子将具有量子尺寸效应、小尺寸效应、表面效应和宏观量子隧道效应，因而表现出许多特有的性质，在催化、滤光、光吸收、医学、磁介质及新材料方面有广阔的应用前景。综述了纳米粒子的制备方法，按研究纳米粒子的学科分类，可将其分为物理方法、化学方法和物理化学方法。

Application and Preparation of Nanometer Particle

When the size of a particle reaches nanometer magnitude, it has quantum-scale effect, small-scale effect, surface effect and macro-quantum tube effect. Therefore, it exhibits a lot of unique properties and has extensive application prospect in aspects of catalysis, light-filtering, light-absorption, medicine, magnetic medium and novel materials. In this paper, some preparation methods of nanometer particles are introduced. They can be divided into physical method, chemical method and physics-chemical method according to subject classification.