二乙醇胺辅助溶剂热法制备ZnO纳米晶  

Diethanolamine-Assisted Solvothermal Synthesis of ZnO Nanocrystalline

作　　者：史飞凡 丁妍 孙同明[1] 

机构地区：[1]南通大学化学与化工学院,江苏 南通

出　　处：《分析化学进展》2023年第3期255-261,共7页Advances in Analytical Chemistry

摘　　要：通过简单的水热法,在二乙醇胺(DEA)的辅助下,以ZnSO4∙7H2O、ZnCl2、Zn(OAc)2∙2H2O和Zn(NO3)2∙6H2O作为锌源,合成了不同形貌的六方晶相ZnO。本文研究了二乙醇胺的用量和锌源的种类对产物尺寸和形貌的影响。利用X-射线粉末衍射仪(XRD)和扫描电子显微镜(SEM)对产物的晶相、纯度、尺寸和形貌进行了表征。用250 W高压汞灯模拟紫外光照射,探究了不同形貌的ZnO对甲基橙溶液的光催化降解活性。对比发现,由Zn(NO3)2∙6H2O作为锌源制得的立方体状ZnO由于具有粒径小、比表面积大、分散性好等特点,因此对染料的催化降解性能优于汉堡状结构。In this paper, with the assistance of diethanolamine (DEA), hexagonal ZnO with different morphologies were synthesized by simple solvothermal method using ZnSO4∙7H2O, ZnCl2, Zn(OAc)2∙2H2O and Zn(NO3)2∙6H2O as zinc sources. The effects of the main reaction parameters (diethanolamine dosage, zinc source) on the size and morphology of the product were studied. The purity, crystal phase, demension and morphology of the product were characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The photocatalytic performance of different morphological ZnO was investigated by the degradation of methyl orangeaqueous solutions under simulated ultraviolet irradiation (250 W high pressure mercury lamp). By comparison, by virtue of the unique characteristics of small particle size, large specific surface area and good dispersion, the photocatalytic properties of ZnO nanocubs obtained from Zn(NO3)2∙6H2O is better than that of hamburg structure.

关 键 词：ZNO 二乙醇胺 水热法 纳米晶 光催化活性 

分 类 号：O64[理学—物理化学]