水热合成法对纳米氧化锡粉体粒径和形貌的控制研究

利用氯化锡和氨水作为反应试剂，通过水热合成技术制备了近球形，棒状，椭球形，六角形等粉体形貌和粒径范围从4 nm至120 nm的纳米氧化锡粉体，并对水热合成条件对粉体的粒径和形貌的影响进行了研究。所制备的粉体的XRD分析结果显示，合成温度在160 ℃以上并且合成时间在3 h以上，粉体全部具有氧化锡晶体结构。利用透射电镜对粉体的粒径和形貌观察发现，二氧化锡粉体的形貌和粒径可通过改变溶液的浓度，合成温度与合成时间进行有效的控制，其中合成温度与溶液浓度不仅可以控制合成粉体的粒径，而且可以控制粉体的形貌。

Tin Oxide Nanoparticles with Controlled Morphology and Particle Size by Hydrothermal Method

Tin oxide nanoparticles with different particle sizes and morphologies were synthesised by varying the concentration, heating temperature and duration time by hydrothermal method. The particles were characterised by X-ray diffraction(XRD) and transmission electron microscopy(TEM). The TEM micrographs show that spherical, rod-like, oval and Hexagonal shaped nanoparticles with particle sizes from 4 nm to 120 nm are synthesised when the parameters of synthesis are changed. XRD patterns indicate that all of nanoparticles synthesised are with the structure of tin oxide.