球形纳米氧化锌的合成

Preparation of spherical ZnO nano-meter powders

本文报道了一种使用流变相法制备球形纳米氧化锌的方法。首先将氧化锌和尿素按摩尔比1∶4混合均匀,加适量水调制成流变态,在300℃反应生成胶状物;然后将胶状物在高速搅拌下水解,将水解产物在120℃下分解;最后研究了热分解产物的表面形貌与粒度分布。实验结果表明在120℃左右生成白色球形纳米ZnO粉体,粒度分布在30-80nm之间,其结构为一未指标化结构,可在600℃左右转变为六方氧化锌。

In this paper,a Rheological Phase Reaction route was reported for the preparation of Spherical nano-meter ZnO.First,the colloid precursor was synthesized at 300℃ from ZnO and Urea by molar ratio of 1：4 which were mixed with water into Rheological phase reaction,and then the colloid precursor was hydrolyzed by fast stirring for thermal decomposing at 120℃,and finally the SEM was studied for investigating the particle size and surface morphology of ZnO.The results shows that a white Spherical nano-meter ZnO powders which the main particle size of ZnO distributes between 30nm and 80 nm was gained at 120℃ of which structure is a unindexed type transforming to hexagonal one at 600℃,