膨润土/Eu离子配合物的发光性质研究  

Study on Luminescence Properties of Bentonite/Eu Ionic Complex

作　　者：乌云嘎 周维磊 演员 曾凡旭 刘景林[1] WU Yunga;ZHOU Weilei;YAN Yuan;ZENG Fanxu;LIU Jinglin(Department of Chemistry and Materials Science,Inner Mongolia Minzu University,Inner Mongolia Tongliao 028000,China)

机构地区：[1]内蒙古民族大学化学与材料学院,内蒙古通辽028000

出　　处：《广州化工》2025年第3期23-25,共3页GuangZhou Chemical Industry

基　　金：内蒙古民族大学博士科研启动基金(KYQD19053)。

摘　　要：镧系离子的发光由于纯正的发光色度、大斯托克斯位移以及长寿命激发态等优点在信息加密、生物成像和照明显示等领域备受关注。本文以片层状多电荷无机硅酸锂镁膨润土为基质,将稀土Eu 3+通过离子交换法与膨润土的Na+置换,利用XPS研究了离子交换的结果,并利用荧光光谱考察不同反应温度和不同反应时间对产物发光性能的影响。实验结果表明回流时间越长,回流温度越高所制备的铕离子凝胶的荧光性能越好,荧光寿命最长可达0.4 ms,量子产率最高可达1.22%。Rare earth europium ion has attracted much attention in luminescence and biological imaging because of its pure luminescence chromaticity and good fluorescence properties.The luminescence of europium ion comes from the electron transition in the inner layer,and its luminescence properties are related to the structure of the luminescent matrix.Synthetic lithium magnesium silicate was used as the substrate,and europium ions were mixed into it by ion exchange method to prepare luminescent materials with different reaction temperatures and different reaction times.The effects of bentonite on the microstructure and fluorescence properties of europium ions were studied by means of fluorescence spectroscopy and transmission electron microscopy.The experimental results showed that the longer the reflux time and the higher the reflux temperature,the better the fluorescence property,the longer the fluorescence lifetime and the higher the quantum yield of the prepared europium ion gels.

关 键 词：稀土铕离子 膨润土 离子交换 荧光性能 

分 类 号：O611.3[理学—无机化学]