Microwave Hydrothermal Synthesis and Characterization of ZnO Nanostructures in Aqueous Solution  

作　　者：郭立童 武静 郭立芝 朱亚波 许程 强颖怀 

机构地区：[1]School of Materials Science&Engineering,China University of Mining and Technology [2]School of Electronic Engineering,Xi'an Shiyou University

出　　处：《Journal of Shanghai Jiaotong university(Science)》2012年第6期734-737,共4页上海交通大学学报（英文版）

基　　金：the National Natural Science Foundation of China(No.81100789);the Fundamental Research Funds for the Central Universities of China (No.2012QNA04)

摘　　要：ZnO nanostructures were prepared in aqueous solution by microwave hydrothermal synthesis. X- ray diffraction （XRD） and field emission scanning electron microscopy （FESEM） were used to characterize ZnO nanostructures （ZNs）. The effects of pH, reaction temperature and reaction time on yield of ZnO were investigated. The yield of ZnO increased significantly with the increase of pH value, reaction temperature and reaction time. High yield and well crystallinity of ZNs could be obtained at 120~C for 60min by microwave hydrothermal synthesis. The spherical and rugby-like ZNs were obtained at 120 ℃ without triethanolamine （TEA） and with TEA （mass ratio, r = mzn2＋ ： mTEA = 1 ： 1）, respectively. The concentration of Zn（OH）2- ions in the reaction solution and TEA had an important effect on the nucleation and morphology of ZnO nanostructures. Mechanism for the formation of ZnO nanostructures was proposed.ZnO nanostructures were prepared in aqueous solution by microwave hydrothermal synthesis.X-ray diffraction（XRD） and field emission scanning electron microscopy（FESEM） were used to characterize ZnO nanostructures（ZNs）.The effects of pH,reaction temperature and reaction time on yield of ZnO were investigated. The yield of ZnO increased significantly with the increase of pH value,reaction temperature and reaction time. High yield and well crystallinity of ZNs could be obtained at 120℃for 60min by microwave hydrothermal synthesis.The spherical and rugby-like ZNs were obtained at 120℃without triethanolamine（TEA） and with TEA(mass ratio,r = mZn2+:mTEA= 1:1),respectively.The concentration of Zn（OH）42- ions in the reaction solution and TEA had an important effect on the nucleation and morphology of ZnO nanostructures.Mechanism for the formation of ZnO nanostructures was proposed.

关 键 词：ZNO NANOSTRUCTURES microwave hydrothermal CHARACTERIZATION 

分 类 号：TB34[一般工业技术—材料科学与工程]