辅助水热法合成新颖CaWO4∶Ln3+（Ln=Tb,Eu,Dy,Sm）及其发光性能  

Assisted Hydrothermal Synthesis and Photoluminescence Properties of CaWO4:Ln3+（Ln=Tb,Eu,Dy,Sm）

作　　者：覃利琴 杨黄根 李冬兰 陈德 QIN Liqin;YANG Huanggen;Li Donglan;CHEN De(College of Chemistry and Food Science,Yulin Normal University,Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology,Yulin 537000,China)

机构地区：[1]玉林师范学院化学与食品科学学院广西农产资源化学与生物技术重点实验室

出　　处：《中国陶瓷》2019年第11期20-25,共6页China Ceramics

基　　金：国家自然科学基金（21767029）;广西自然科学基金（2017GXNSFAA198197）;校级科研项目（2017YJKY24）

摘　　要：以酒石酸钾钠为辅助剂,采用辅助水热法合成CaWO4∶Ln^3+(Ln=Tb,Eu,Dy,Sm)发光材料。考察酒石酸钾钠的用量、离子掺杂浓度等对合成产物发光性能的影响。采用X射线衍射(XRD)、扫描电镜(SEM)、紫外可见吸收谱(DRS)、光致发光光谱(PL)等对样品的结构、形貌及其发光性能进行表征。实验结果表明:产物为四方晶相的CaWO4∶Ln^3+(Ln=Tb,Eu,Dy,Sm)。当添加0.4 g酒石酸钾钠、掺杂浓度为5 mol%制备的CaWO4∶Ln^3+(Ln=Tb,Eu,Dy,Sm)发光材料,在紫外光激发下发出不同颜色光。荧光强度是未添加酒石酸钾钠所得产物的2.1倍。the novel CaWO4∶Ln^3+(Ln=Tb,Eu,Dy,Sm)Phosphors were synthesized by Hydrothermal Synthesis with potassium sodium tartrate Assisted.The effects of the quality of potassium sodium tartrate,the ratio percent of Tb^3+,Eu^3+,Dy^3+,and Sm^3+on luminescence of CaWO4∶Ln^3+(Ln=Tb,Eu,Dy,Sm)were investigated in detail.and the sample of structure and morphology were characterized by X-ray diffraction(XRD),field emission scanning electron microscopy(FE-SEM),UV-vis diffuse reflectance(DRS)and photoluminescence(PL).The results show that the product was polyhedron CaWO4∶Ln^3+(Ln=Tb,Eu,Dy,Sm)with the Tetragonal structure;The Photoluminescence spectrum shows a strong PL emission peak from the production.The luminescence intensity of the CaWO4∶Ln^3+(Ln=Tb,Eu,Dy,Sm)higher than the production obtained without potassium sodium tartrate Assisted.

关 键 词：水热法合成 CAWO4 辅助 发光性能 

分 类 号：TQ174.75[化学工程—陶瓷工业]