水热法制备多种ZnO纳米结构及其发光性能

HYDROTHERMAL SYNTHESIS OF MULTIFORM ZnO NANOSTRUCTURES AND THEIR PHOTOLUMINESCENCE PROPERTIES

以氯化锌(ZnCl2)和氨水(NH4OH)为原料,以十六烷基三甲基氯化铵(1631)为辅助剂,采用水热法制备出了多种形貌的ZnO纳米结构,运用X射线衍射、扫描电子显微镜和室温光致发光谱研究了ZnO样品的结构、形貌和光学性质,探讨了表面活性剂1631在多种ZnO结构形成过程中的作用机理.研究表明多种ZnO纳米结构均为单晶,随着表面活性剂用量的增加,ZnO纳米结构的长径比减小;ZnO纳米结构都出现一个强的蓝紫外发射峰,ZnO的蓝紫外发受到其比表面积的影响.

By using the hydrothermal method, as ZnCl2 and NH4OH for reagents, 1631 as subsidiary, ZnO nanostructuress were successfully synthesized. The phase and morphology of the product were characterized by means of powder X-ray diffraction（XRD）, scanning e- lectron microscopy（SEM）, and transmission electron microscopy（TEM）, and researched the effect of 1631 in process of ZnO growth. The results show that ZnO were singlecrystal. With addness of 1631, the ratio of length to radii was minished, and all of ZnO nanostructures have a strong indigo-apex, and the indigo-apex was affected by specific surface area of ZnO.