摘 要: 采用熔盐法制备得到了单一六方纤锌矿结构的 ZnO 纳米微 粉, 并对其反应条件进行了研究。通过 XRD、TEM 和 BET 等分析手 段对纳米粉的形貌结构进行表征, 通过 TG 分析对反应过程进行研 究。通过调控焙烧温度、熔盐含量、焙烧时间等反应条件, 可以将其平 均粒径尺寸有效控制在 50~150 nm 范围。结果表明, 通常所得 ZnO 纳米微粉晶化程度高, 团聚较少, 粒径分布较均匀; 但熔盐含量较低 时, 微粉产物中将生成一定量的 ZnO 纳米棒。 

关键词: 氧化锌; 纳米微粉; 熔盐法; 弱团聚

Abstract: ZnO nano-crystal powders with hexagonal crystal configura tion were successfully synthesized from a molten salt method, and the synthesis condtions were detailedly studied. The novel characters of syn thesized ZnO powders were analyzed by means of XRD, TEM, BET and TG, etc. The average crystal sizes of obtained ZnO powders could be ef ficiently controlled by changing the calcination conditions, such as calci nation temperature, calcination time, content of molten salt KNO3. Com monly these obtained ZnO powders own the eminent characters of weak agglomeration, narrow distribution and fine crystalline configuration. When the content of molten salt KNO3 was low enough, amount of nano-rod ZnO could be synthesized efficiently. 

Keywords: ZnO; nano-crystal powder; molten salt synthesis method; weak agglomeration