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Abstract
ZnS nanocrystallites have been successfully prepared by a sonochemical process. The influence of ultrasonic irradiation power on the crystallites size and synthesis rate of ZnS nanoparticles during the process was investigated. The as prepared ZnS nanocrystallites were characterised by X-ray diffraction and transmission electron microscopy. Results show that ZnS nanoparticles can be obtained by sonochemical process using zinc chloride and thiacetamide as raw materials. It is found that the as prepared ZnS nanoparticles are hexagonal phase with spherical or spherical-like morphologies. The crystallites size decreases, while the synthesis rate of ZnS nanoparticles increases with the increase of ultrasonic irradiation power in relatively short reaction time (<110 min). There is an extreme point of reaction rate at the ultrasonic irradiation power of 300 W after 110 min reaction.