Large scale synthesis of ZnO nanoparticles via homogeneous precipitation  

作　　者：王益明 李建华 洪若瑜 

机构地区：[1]Chemical Engineering and Materials Science&Key Laboratory of Organic Synthesis of Jiangsu Province,College of Chemistry,Soochow University [2]Kailuan Zhongrun Coal Chemical Co.,Ltd. [3]State Key Laboratory of Multi-phase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences [4]College of Chemistry and Chemical Engineering,Fuzhou University

出　　处：《Journal of Central South University》2012年第4期863-868,共6页中南大学学报（英文版）

基　　金：Project(20876100) supported by the National Natural Science Foundation of China;Project(20090451176) supported by the China Post-doctoral Science Foundation;Project(2009CB219904) supported by the National Basic Research Program of China;Projects(YJS0917,SG0978) supported by the Commission of Science and Technology of Suzhou Municipality;Project(11C26223204581) supported by the Ministry of Science and Technology;Project(BK2011328) supported by the Natural Science Foundation of Jiangsu Province,China

摘　　要：In order to synthesize ZnO nanoparticles economically, industrial-grade zinc sulfate and urea were utilized to synthesize ZnO precursors in a stirred-tank reactor or a Teflon-lined autoclave at 100-180 ℃ under complete sealing condition. The ZnO precursors were calcined at 450 ℃ for 3 h to, synthesize ZnO nanoparticles. The composition of the precursors and the formation mechanism of ZnO were studied by thermogravimetric analysis and Fourier transform infrared spectroscopy. The results of X-ray diffraction, transmission electron microscopy and scanning electron microscopy of the ZnO powders demonstrate that high-purity zincite ZnO nanoparticles are synthesized. Orthogonal experiments were performed to find out the optimal conditions for the maximum yield and the minimum size. The ettect of temperature on the size ofZnO nanoparticles was investigated. The results show that a higher temperature is propitious to obtain smaller nanoparticles.In order to synthesize ZnO nanoparticles economically,industrial-grade zinc sulfate and urea were utilized to synthesize ZnO precursors in a stirred-tank reactor or a Teflon-lined autoclave at 100-180 °C under complete sealing condition.The ZnO precursors were calcined at 450 °C for 3 h to synthesize ZnO nanoparticles.The composition of the precursors and the formation mechanism of ZnO were studied by thermogravimetric analysis and Fourier transform infrared spectroscopy.The results of X-ray diffraction,transmission electron microscopy and scanning electron microscopy of the ZnO powders demonstrate that high-purity zincite ZnO nanoparticles are synthesized.Orthogonal experiments were performed to find out the optimal conditions for the maximum yield and the minimum size.The effect of temperature on the size of ZnO nanoparticles was investigated.The results show that a higher temperature is propitious to obtain smaller nanoparticles.

关 键 词：ZNO homogeneous synthesis sealing condition thermogravimetric analysis 

分 类 号：O614.241[理学—无机化学] TB383.1[理学—化学]