摘要：以SnCl₄·5H₂O为原料,采用溶胶-凝胶法制备了纳米SnO₂粒子,研究了焙烧温度、碱的种类及反应物浓度对纳米SnOO₂粒子大小和分散状态的影响。采用XRD、TEM、ED等技术对SnO₂纳米粒子的性能进行了表征。实验结果表明:用氨水和尿素作为沉淀剂,控制反应结束时pH值为7,在600℃焙烧,制备得到粒子尺寸约为15nm、分散性良好的纳米SnO₂粒子。

关键词： 溶胶-凝胶法;SnO₂;纳米粒子

Abstract：T he nanometer-size SnO₂ particles are prepared by sol－gel method with alkali and tin tetra-chlorine as the starting materials．T he microstructure and morphology of the nanometer-size SnO₂ are investigated by means of XRD and T EM．T he results indicated that the nanometer-size SnO₂ particles （～15 nm） are obtained under following conditions：NH₃·H₂O and CO（NH₂）₂ as precipitant pH ≈7 calcination temperature 600℃ for2h．

Keywords：sol－gel method；SnO₂；nanoparticles