前驱物尺寸和形貌对纳米ZnO的影响  

Influences of Morphology and Size of Precursor on Nano-ZnO

作　　者：陈传志[1] 周祚万[1] 

机构地区：[1]西南交通大学材料科学与工程学院,四川成都6100031

出　　处：《西南交通大学学报》2004年第4期557-560,共4页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金资助项目(50272056);四川省重点科技公关项目(川科计[2001]20号;[2002]7号)

摘　　要：以Zn(NO3)2和CO(NH2)2为主要原料,用均匀沉淀法制备了不同粒径的纳米ZnO.通过控制沉淀反应的工艺参数,可得到不同尺寸的条状和片状前驱物;再通过调控焙烧条件,可得到不同尺寸的球状、网状和棒状纳米ZnO.用TEM及XRD等方法对前驱物及纳米产物进行表征和研究,结果表明,纳米ZnO的形貌和尺寸在很大程度上取决于前驱物的形貌和尺寸.Nano-ZnO powders with diameters of 8 to 130 nm were prepared from zinc nitrate and urea by homogeneous precipitation method. The precursors in different sizes and with rod-like or lamellar shapes were obtained by controlling the reaction procedures. Then, nano-ZnO of different sizes and with spherical, net-like and rod-like shapes could be obtained under different calcination conditions. The microstructures and morphologies of the precursors and nano-ZnO particles were analyzed with TEM (transmission electron microscope) and XRD (X-ray diffraction), showing that the shapes and sizes are determined in a great extent by those of the precursors.

关 键 词：均匀沉淀法 前驱物 纳米ZNO 尺寸 形貌 透射电子显微镜 X射线衍射 

分 类 号：TB383[一般工业技术—材料科学与工程]