纳米ZnO合成中醇水体系和熔盐介质的粒径调控效应研究  

Study on Size Modulation Effects of Ethanol/Water System and Molten Salts Media in Preparing ZnO Nanoparticles

作　　者：冯欣[1] 施利毅[1,2] 时雯[1] 张剑平[2] 方建慧[2] 马书蕊[2] 

机构地区：[1]上海大学纳米科学与技术研究中心,上海200444 [2]上海大学理学院化学系,上海200444

出　　处：《人工晶体学报》2009年第5期1108-1113,共6页Journal of Synthetic Crystals

基　　金：国家高技术研究发展计划(863)项目(No.2007AA03Z335);上海市科委学科带头人计划(No.07XD14014);上海高校选拔培养优秀青年教师科研专项基金(No.SHU-07051);教育部科学技术研究重点项目(No.208182)

摘　　要：采用液相法制备了纳米ZnO,在沉淀过程中采用乙醇-水混合溶液,煅烧过程中加入碱金属硝酸盐介质,以研究两者对粒径的调控作用和机理。并利用XRD、TEM、BET和PL等测试手段进行产物表征。结果表明:相同条件下,采用NaNO3和LiNO3熔盐辅助煅烧后,产物粒径较直接煅烧明显减小;同量的LiNO3相对于NaNO3,其产物粒径小于后者;当醇水比例增加时,由于介电常数的减小,产物粒径也明显减小。最后讨论了醇水体系和熔盐介质粒径调控的机理。ZnO nanoparticles were synthesized by liquid phase method. The size control effects of Ethanol/Water solvents used in precipitation and the molten alkali salts in calcination were investigated. The products were charaterized by XRD,TEM,BET and PL. The results indicated that particle size decreased in the assisted calcination with NaNO3 and LiNO3 salts. With the same addition amount,the particle size obtained with LiNO3 was smaller than the former. And the size decreased obviously when the ratio of ethanol to water changed from 1∶1 to 3∶1. Finally,the mechanisms of ethanol/water mixed system and molten salts media were also disscussed.

关 键 词：纳米ZNO 醇水混合体系 熔盐介质 粒径调控 

分 类 号：TQ132.4[化学工程—无机化工]