用沉淀法和燃烧法合成纳米氧化锌(英文)  

SYNTHESIS OF NANO-SIZED ZINC OXIDE BY PRECIPITATION METHOD AND COMBUSTION TECHNOLOGY

作　　者：李像[1] 魏坤[1,2] 王迎军[1,2] 赵娜[1] 郭武生[1] 

机构地区：[1]华南理工大学材料科学与工程学院 [2]特种功能材料教育部重点实验室,广州510640

出　　处：《硅酸盐学报》2010年第3期499-503,共5页Journal of The Chinese Ceramic Society

基　　金：国家"863"计划(2007AA021908);国家自然科学基金(50732003)资助项目

摘　　要：以硝酸锌为原料,分别采用沉淀法和燃烧法合成纳米氧化锌(n-ZnO)颗粒。采用X射线衍射仪、透射电子显微镜和紫外分光光度计对n-ZnO样品进行表征,并研究合成机理和样品紫外屏蔽性能。结果表明:用沉淀法获得的n-ZnO粒径较小,为20～40nm,颗粒分散均匀;用燃烧法制备的n-ZnO粒径为40～80nm。两种方法所制备的n-ZnO均属六方晶型,具有较强的紫外吸收能力,并且吸收出现蓝移,表现为量子尺寸效应。Nano-sized zinc oxide（n-ZnO） particles were synthesized by precipitation method and combustion technology using zinc nitrate as raw materials.The as-synthesized samples were characterized by X-ray diffraction,transmission electron microscope,and ultraviolet（UV） spectrometer.The synthetic mechanism and UV-shielding properties were also investigated.The results show that samples prepared by the precipitation method have a smaller particle size ranging from 20 nm to 40 nm than those synthesized by the combustion technology with particle size of 40-80 nm.In addition,n-ZnO particles prepared by the precipitation method also have a uniform dispersion.The samples prepared by two methods are all assigned to the hexagonal wurtzite structure having strong absorption performance in ultraviolet region,and absorption peaks of the samples appear blue-shift,showing quantum size effects.

关 键 词：氧化锌 沉淀法 燃烧法 合成机理 

分 类 号：TQ174[化学工程—陶瓷工业]