氧化锌自组装微球的微波水热合成与影响因素  

Synthesis and influence factors of ZnO self-assembled microspheres via microwave hydrothermal method

作　　者：朱振峰[1] 杨冬[1] 刘辉[1] 孙洪军[1] 张建权[1] 郭丽英[1] 

机构地区：[1]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《功能材料》2010年第1期55-58,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50772064);陕西科技大学博士科研启动基金资助项目(BJ08-1);陕西科技大学研究生创新基金对本项目的大力资助

摘　　要：以Zn(NO3)2.6H2O和聚乙二醇(PEG,Mn=2000)为原料,采用微波水热法制备出了结晶性能良好的ZnO微球。利用XRD、EDS、SEM、TEM对样品进行了表征,并系统研究了微波水热过程中辐照时间、水热温度、表面活性剂和超声处理等因素对产物形貌和结构的影响。实验表明,ZnO微球是由很多直径约300nm,长1μm的ZnO棒自组装而成,微球直径约为2μm,自组装结构的形成可能与PEG模板的导向作用有关。延长微波辐照时间,ZnO微球的直径有所增加,微球结构的完整性受微波水热温度影响较大。Fine crystallized ZnO and its self-assembled microspheres were synthesized by microwave hydrothermal method using Zn（NO3）2·6H2O and PEG2000 as raw materials. The as-prepared samples were studied by XRD,EDS,SEM,and TEM. The influence factors （such as reaction time,temperature,surfactant and ultrosonic treatment） on the features and structures of samples were studied systematically. The results showed that the average diameter and length of ZnO rods were about 300nm and 1μm,whereas the diameter of self-assembled microspheres was about 2μm. The growth process of self-assembled microspheres was possibly associated with the directing effect of PEG template.The irradation time had little impact on the crystal formation of samples,by increasing reaction time the diameter of ZnO microspheres could be enhanced. The integrality of the self-assembled microspheres relied a lot on the reaction temperature.

关 键 词：微波水热 ZNO 自组装 微球 影响因素 

分 类 号：O649[理学—物理化学]