Abstract
This paper reports the results of an investigation aiming at finding what affects the grain size of nano-ZnO powder during synthesis. Nano-sized ZnO powders have been prepared by a polymer gelation method. The crystalline structures and morphologies of the powder have been characterized by X-ray diffraction (XRD) and Electron Microscopy (SEM) . The result shows that the different preparation conditions such as concentration, pH value, calcination time and calcination temperature have a lot of influences upon the properties of nano-ZnO powders. The smallest grain size of ZnO powder we have obtained is 15 nm by controlling the process conditions.
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