摘要
以水和N,N-二甲基甲酰胺(DMF)为二元溶剂,丁二酸钠为辅助剂的溶剂热法合成纳米晶自组装CaWO_(4):Tb^(3+)微球。探讨N,N-二甲基甲酰胺的用量、丁二酸钠的用量及Tb^(3+)掺杂物质的量分数对发光性能的影响。利用X射线衍射(XRD)、紫外漫反射(DRS)、扫描电镜(SEM)、光致发光光谱(PL)、暗箱式紫外分析仪等对产物结构、形貌及其性能进行表征。实验表明:添加5 mL的DMF作为溶剂,加入1.2 g丁二酸钠为辅助剂,合成的产物为四方晶相的纳米晶自组装CaWO_(4):Tb^(3+)微球。该微球在257 nm激发下表现出强发射峰,在546 nm附近有较强的荧光发射峰,荧光强度是未添加丁二酸钠对应产物的3.8倍。
The nanocrystalline self-assembled CaWO_(4):Tb^(3+) microspheres were synthesized by solvothermal methods with water and N,N-dimethylformamide(DMF)as binary solvent and sodium succinate as auxiliary agent.The effects of the volume of N,N-dimethylformamide,the dosage of sodium succinate and the amount-of-substance fraction of Tb^(3+) on luminescence properties of CaWO_(4):Tb^(3+) were investigated in detail.The structure,morphology and properties of the product were characterized by X-ray diffraction(XRD),UV-vis diffuse reflectance spectroscopy(DRS),scanning electron microscopy(SEM)and photoluminescence(PL)and dark-box ultraviolet analyzar etc..The results showed that the product was nanocrystalline selfassembled CaWO_(4):Tb^(3+) microspheres with the tetragonal structure,which could be obtained after solvothermal treatment with 5 mL DMF as solvent and 1.2 g sodium succinate as additive.The microsphere showed a strong emission peak at 257 nm and a strong fluorescence emission peak near 546 nm.The fluorescence intensity of the microspheres was 3.8 times higher than that of the corresponding product without sodium succinate.
作者
覃利琴
杨黄根
陈德
陶萍芳
Qin Liqin;Yang Huanggen;Chen De;Tao Pingfang(College of Chemistry and Food Science,Yulin Normal University,Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology,Yulin 537000,China)
出处
《无机盐工业》
CAS
CSCD
北大核心
2021年第1期36-39,43,共5页
Inorganic Chemicals Industry
基金
国家自然科学基金(21767029)
广西自然科学基金(2017GXNSFAA198197)。
关键词
自组装
溶剂热法
丁二酸钠
发光性能
self-assembled
solvothermal methods
sodium succinate
photoluminescence properties
