【摘要】 采用水热沉淀法工艺制备出粒径小、粒度均匀、高品质的纳米氧化锌,粉体颗粒分散性好,纯度高,平均粒度为74nm.通过正交实验分析了工艺过程中各因素对粉体制备的影响,进行了XRD、TEM、IR、BET测试,对样品结构、组成、粒度、大小进行分析和表征;讨论了络合物浓度、煅烧温度以及保温时间等对粉体粒径的影响.制备纳米氧化锌的最佳工艺条件为:ZnSO4浓度0 25mol·L-1;氨水与ZnSO4的络合比为1∶1 5;煅烧温度350℃;保温时间1h.对水热沉淀法制备的纳米氧化锌粒子在液相中成核与生长机理进行了初步探讨.更多还原

【Abstract】 Nanometer zinc oxide powder can be prepared in a method of hydrothermal precipitation.The cross experimental design and the analyses of influencing factors are studied.The powder structure,component and grain size of the prepared powder are tested by means of XRD,IR and TEM.The results of the influence factors,such as concentration,sintering temperature and holding time etc,are discussed in detail.It is demonstrated that the ZnO powders decentralization is better,the purification is high,the mean grain size is about 74 nm.更多还原