Eu^(3+)掺杂的ZnF_2-ZnO纳米结构材料及其发光、光催化性能  

Photoluminescence and photocatalytic activity of Eu^(3+)-doped ZnF_2-ZnO nanostructured materials

作　　者：常加忠[1] 王博 张新磊[1] 张磊[1] 王振领[1] 

机构地区：[1]周口师范学院分析测试中心,河南周口466001 [2]周口市环境监测站,河南周口466000

出　　处：《周口师范学院学报》2012年第2期61-63,71,共4页Journal of Zhoukou Normal University

基　　金：河南省高校科技创新人才支持计划(2011HASTIT030);河南省高等学校青年骨干教师资助计划项目(2009GGJS-119);河南省教育厅自然科学基金资助项目(2011B140025);周口师范学院博士启动基金资助项目

摘　　要：采用水热法,结合后续的热处理,制备了Eu3+掺杂的ZnF2-ZnO纳米结构材料,利用X-射线衍射仪(XRD)、扫描电子显微镜(SEM)和荧光光谱仪对样品结构、形貌及发光性能进行表征.结果表明,以NaF为原料得到的样品为正方体状,长为220～400nm;以NH4F为原料得到的样品呈棒状,长约为1.2μm,直径为110nm左右.紫外光激发下,棒状样品发光性能强于立方体状的样品,表现为掺杂Eu3+的特征发射.光催化脱色实验表明,两种形貌样品的光催化活性差别不大,150min对甲基橙的脱色率达70%左右.Eu^3＋- doped ZnF2 -ZnO nanostructured materials have been successfully prepared by the hydrothermal meth- od and annealing treatment, and characterized by X- ray diffraction （XRD）, scanning electron microscopy （SEM） and fluo- rescence spectroscopy. XRD results showed that the phase structure of the obtained materials is mainly composed of ZnO and ZnF2. SEM results showed that the morphology of the composite material using NaF as starting material is the cube - like structure, while the morphology using NH4F as starting material is the rod- like. Under the irradiation of ultraviolet light, Eu^3＋- doped ZnF2 -ZnO with rod -like morphology exhibits the red emission of Eu ions. The two samples show the similar photocatalytic activity for the decoloring of methyl orange solution.

关 键 词：纳米结构 掺杂 发光 光催化 

分 类 号：O614[理学—无机化学]