水热法制备氧化锌阵列及其形貌控制  

Hydrothermal Synthesis of ZnO Nanorod Arrays and Their Morphology Control

作　　者：李必慧[1] 唐一文[1] 张新[1] 姜云[1] 罗利娟[1] 贾志勇[1] 

机构地区：[1]华中师范大学 物理科学与技术学院,武汉430079

出　　处：《无机材料学报》2007年第3期403-406,共4页Journal of Inorganic Materials

基　　金：武汉市重大科技攻关项目之纳米专项(20041003068-09);教育部留学回国人员启动基金

摘　　要：低温条件下,采用水热法,通过控制前驱溶液的pH值,在预先镀有ZnO纳米膜的导电玻璃衬底上制备了形貌各异的ZnO阵列,用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、高分辨透射电子显微镜(HRTEM)和紫外-可见分光光度计等分析手段对ZnO纳米棒的结构和形貌进行了表征．同时还对不同形貌阵列的形成机理进行探讨．结果表明,所制ZnO纳米棒为单晶,沿c轴择优生长．在pH值为10．5左右时,能得到取向性好、直径均匀(d-80nm)的ZnO纳米棒阵列．光学测试表明,在可见光区透光度超过80％,禁带宽度约为3．25eV．By using the hydrothermal method, the ZnO nanorod arrays with different morphologies were synthesized on ZnO nanoparticle-coated transparent conductivity glasses （TCO） at low temperatures by controlling the pH value of precursory solutions. The ZnO nanorod arrays were characterized by X-ray diffraction （XRD）, scanning electron microscope （SEM）, transmission electron microscope （TEM）, high-resolution transmission electron microscope （HRTEM） and ultraviolet-visible spectrophotometer （UV-Vis）. Fhrthermore, the mechanism was primary discussed. The results show that the ZnO nanorod is a single crystal and it grows along c axis. When the pH value is about 10.5, the array is well-aligned and the diameter of the nanorod is uniform. Optical characterization shows that the optical transmittance of the film is higher than 80% in the visible wavelength and its band gap is about 3.25eV.

关 键 词：水热法 氧化锌阵列 PH值 形貌 

分 类 号：O642[理学—物理化学] O484[理学—化学]