PREPARATION OF ZnO NANOPARTICLES BY PRECIPITATION/MECHANOCHEMICAL METHOD

摘要

The ZnO nanoparticles were synthesized by using a combination of precipitation and mechanical milling. Basic zinc carbonate precursor was prepared by precipitation process using zinc sulfate as the starting material. Under the mechanochemical effect, parts of the basic zinc carbonate were transformed into ZnO. In the closed system of milling, in order to produce pure ZnO nanoparticle phase, further heat processing was needed. But the ultimate ZnO particles were more uniform and the particle size distribution was narrower. The effects of mechanical milling process on properties of ultimate ZnO particles were also investigated.