摘要：采用水热合成法,以亚硫酸钠为还原剂,用硝酸银、氨水和锡酸钠为原料制备银-氧化锡复合粉体,对制备的粉体进行X射线衍射、扫描电镜和能谱分析。结果表明:采用水热合成法可以制备出银-氧化锡颗粒,颗粒近似球形,粒径约为400 nm;该粉体由银和氧化锡两种物相组成,银的衍射峰非常明显,银元素和锡元素在粉体中均匀分布,可以推断银和氧化锡的分布是均匀的。

关键词： 银;氧化锡;复合粉体;水热合成

Abstract： Silver-tin oxide composite powders were prepared by hydro - thermal method， AgNO₃， NH₃H2O and Na₂SnO₃ were used as raw materials， Na2SO3 was employed as reducing agent. The composite powders were analyzed by X-ray diffraction， scanning electron microscopy and energy dispersive spectrometry. The results showed that Ag -SnO₂composite powders were prepared by hydrothermal method. The particles looked spherical， their diameters were about 400 nm. The composite powders were composed of Ag and SnO₂. The diffraction peaks of silver was obvious， silver element and tin element in the powders were evenly distributed. It was inferred that the distribution of Ag and SnO₂ was uniform. 

Keywords：silver； tin oxide； composite powder； hydrothermal method