超声波直接沉淀法制备纳米氧化锌及改性研究  

Preparation of nano-ZnO by direct precipitation method under ultrasonic radiation and surface modification study

作　　者：朱卫兵[1] 陈剑松[1] 廖静[1] 宗俊[1] 

机构地区：[1]华东师范大学化学系,上海200062

出　　处：《无机盐工业》2008年第3期20-22,29,共4页Inorganic Chemicals Industry

基　　金：上海市科委纳米中心0652nm026超高电位梯度纳米ZnO压敏电阻研制

摘　　要：以硝酸锌和无水碳酸钠为原料,把超声波引入到直接沉淀法中,同时用溴化十六烷基三甲基铵(CTAB)作为表面活性剂,合成出粒径小、分布均匀且团聚现象明显减弱的纳米氧化锌,并用TG-DTA,XRD,SEM等分析手段对制得的产物进行表征,找出合成的最佳条件。同时,还以油酸作为改性剂对所制得的纳米氧化锌进行表面改性,以FT-IR等测试手段对其改性原理进行简单探讨,并通过测定活化指数对改性效果进行分析。Nano -sized ZnO with small particle size, uniform size distribution and less agglomeration was synthesized by direct precipitation method under ultrasonic radiation with Zn（ NO3 ） 2 and anhydrous Na2 CO3 as the raw materials, eetrimonium bromide （CTAB） as surface active agent. The product was charactered by TG - DTA ,XRD and SEM ,then the optimum condition of synthesis was found. Meanwhile, the prepared ZnO nano - partieals were modified with oleie acid. The principle of modification was discussed simply by FT - IR method etc. and the effect of modification was analyzed by measuring activation index.

关 键 词：纳米氧化锌 超声波 表面改性 

分 类 号：TQ132.41[化学工程—无机化工]