摘要
以硝酸锌、碳酸铵为原料,采用均匀沉淀法制备了ZnO纳米粉体,借助Zeta电位仪、IR图谱、XRD及SEM等测试手段,研究了ZnO纳米粉体合成过程中的团聚体状态。结果表明:选择合适的沉淀条件,在沉淀过程中引入适宜的表面活性剂,可增强粉体表面的静电位阻效应,避免干燥和煅烧过程中形成硬团聚体,从而改善粉体的分散性。在碳酸铵?硝酸锌为3?1的摩尔比所得ZnO粉体晶粒小于20nm,二次粒径小于80nm。
Nano-ZnO powder was prepared by using Zn(NO3)(2) and (NH4)(2)CO3 as starting materials. The aggregation of nano-ZnO powder particles was studied by the Zeta potential system, infrared absorption spectra, XRD and SEM. The results showed that a suitable dispersant added to the ZnO precursor could increase the static potential of nano-ZnO powder, which would restrain aggregation of the precursor during the drying and calcining process. In this way, the dispersed state of the ZnO nano-powder is improved. The particle size of prepared ZnO powder is less than 20 nm. Secondary particle size is less than 80 nm.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2004年第9期992-995,共4页
Rare Metal Materials and Engineering
基金
河南省教育厅"自然科学基金项目"资助(2003430208)
关键词
ZNO
纳米粉体
团聚
均匀沉淀
zinc oxide
nanometer
aggregation
homogeneous precipitation method
