采用喷射共沉淀法制备了ZnGa2 O4纳米晶。XRD、SEM和TEM结构分析结果表明 ,喷射共沉淀法制备的Zn Ga2 O4纳米晶颗粒细小均匀 ,形状完整。与化学共沉淀法相比 ,粒子尺寸明显减小 ,小于 10nm ,同时ZnO杂相峰消失。分析了喷射共沉淀法的机理 ,并对实验结果进行了解释。 ZnGa2O4 nanocrystals were prepared by spray coprecipitation method. The results of XRD, SEM and TEM analysis show that Zn Ga 2 O 4 nanocrystalline particles prepared by spray coprecipitation method are fine and uniform and complete in shape. Compared with the chemical coprecipitation method, the particle size is significantly reduced, less than 10nm, ZnO impurity peak disappears at the same time. The mechanism of spray coprecipitation method was analyzed and the experimental results were explained.