均匀沉淀法制备纳米氧化锌  

Nanometer Zinc Oxide Powders Preparation by Uniform Precipitation

作　　者：刘家祥[1] 丁德玲[1] 王震[1] 韩跃新[2] 

机构地区：[1]北京化工大学可控化学反应科学与技术基础教育部重点实验室北京化工大学材料科学与工程学院,北京100029 [2]东北大学资源与土木工程学院,沈阳110004

出　　处：《有色金属》2006年第1期49-52,共4页Nonferrous Metals

基　　金：国家自然科学基金资助项目(50374021)

摘　　要：研究均匀沉淀法制备纳米氧化锌影响因素和最佳工艺条件。结果表明,均匀沉淀法可制备出六方晶系纳米氧化锌。随Zn2+浓度增加纳米氧化锌颗粒由棒状向球形转化,平均粒径49nm。对纳米氧化锌产率影响因素的显著性水平依次为反应温度、尿素与Zn2+物质的量之比、反应时间和Zn2+的浓度。最优工艺参数为:反应温度95℃、反应时间3.5h、Zn2+浓度0.6mol/L、尿素与Zn2+物质的量之比为2.5。以硝酸锌为原料可得到纯度较高的纳米氧化锌。The effect factors and optimal technological parameters for nanometer zinc oxide powders prepared by uniform precipitation are investigated. The results show that the nanometer zinc oxide powders belong to hexagonal system can be obtained by uniform precipitation process and the shape of nanometer zinc oxide is changed from rod - like to spherical form with the increase of Zn^2 ＋ concentration. The average diameter of nanometer zinc oxide particles is 49nm. The influencing factors on yield of nanometer zinc oxide powders in proper order are the reaction temperature, molar ratio of carbamide/Zn^2 ＋ , reaction time and concentration of Zn^2 ＋ . The optimal condition is reaction temperature 95℃, reaction time 3.5h, concentration of Zn^2＋ 0.6mol/L and molar ratio 2.5 of carbamide/Zn^2＋ . The purer nanometer zinc oxide powders can be made from the zinc nitrate.

关 键 词：无机非金属材料 纳米氧化锌 均匀沉淀法 

分 类 号：TB383[一般工业技术—材料科学与工程] TB321