室温固相合成纳米ZnO晶须及表征  

Preparation and Characterization of Zinc Oxide Crystal Whiskers via Solid-State Reaction at Room Temperature

作　　者：孙雅博[1] 田克情[1] 张彦[2] 李璟[1] 赵志才[1] 

机构地区：[1]河北化工医药职业技术学院化学与环境工程系,石家庄050026 [2]衡水学院,衡水053000

出　　处：《中国陶瓷》2014年第3期42-44,共3页China Ceramics

摘　　要：以ZnSO4·7H2O和NH4HCO3为原料，在适量表面活性剂聚乙二醇一400（PEG-400）的存在下，采用室温固相反应，得两种纳米碳酸盐前躯体：ZnCO3、Zn5（OH）6（CO3）2。分别以这两种碳酸盐为锌源，以氯化钾为助熔剂，在920℃煅烧2．5h制备得到ZnO晶须，用X射线衍射（XRD）、透射电镜（TEM）及XSZ—D2型倒置生物显微镜对产物进行表征和形貌分析。结果证明：在室温固相反应中，加入KCI助溶剂，纳米ZnO晶须的生长机理为固态纳米颗粒自组装生长过程，得ZnO晶须平均直径为150nm，长度为5．0～4．5μm。Two types of carbonate precursor ：ZnCO3 and Zns（OH）6（CO3）2 are prepared in the presence of surfactant PEG-400 with fully ground ZnSO4·7H2O and NH4HCO3 as raw materials by solid-state reaction at room temperature. ZnO crystal whiskers were prepared via a simple thermolysis of two types of carbonate, the growth process was carried out at 920℃ for 2.5 h using potassium chloride as smelter flux. The products were identified by X-ray diffraction analysis（XRD）, transmission electron microscopy（TEM） and XSZ-D2 inverted biologic microscope.The results showed that the growth mechanism of zinc oxide crystal whiskers shows a new mechanism- self-assemble growth, the ZnO whiskers have diameter about 130nm and lengths ranging from 3.0 to 4.5μm.

关 键 词：室温固相反应 ZnO晶须 助溶剂 机理 

分 类 号：TQ134.41[化学工程—无机化工]