Bi^(3+)敏化LRH纳米片的剥离制备  

Synthesis of Y_(1.9-X)Eu_(0.1)Bi_X(OH)_5NO_3·nH_2O and the Photoluminescence Properties Study

作　　者：张琳[1] 马菲 金凤[1] 师瑞娟[1] 管清梅[1] 盛良全[1] 

机构地区：[1]阜阳师范学院化学与材料工程学院,安徽阜阳236047

出　　处：《陶瓷学报》2017年第5期674-678,共5页Journal of Ceramics

基　　金：安徽省自然科学研究项目(KJ2016A548;2015KJ008);安徽省高校自然科学基金项目(2016FSKJ13;2017FSKJ09);阜阳师范学院科研创新团队(KYTD201710)

摘　　要：本文通过水热反应法制备了Bi^(3+)敏化Eu^(3+)掺杂的Y_(1.9-X)Eu_(0.1)Bi_X(OH)_5NO_3·nH_2O层状材料,通过调整Eu^(3+)与Bi^(3+)掺杂比,获得荧光性能最优、Bi^(3+)敏化效果最佳的层状材料。X-射线衍射分析测试表明该材料具有明显的层状结构,层间距d值约0.92 nm。经十二烷基硫酸根离子交换取代后的材料层间距增大到2.6 nm,并且由于层间有机阴离子的"天线效应",使得复合层状材料的荧光性能得到了显著增强。正丁醇溶剂中剥离得到纳米片材料,SEM和TEM测试表明:纳米片的二维尺寸在500 nm-1000 nm的范围。室温条件下纳米片溶胶的光致发光分析表明:Bi^(3+)的敏化作用使得Eu^(3+)_掺杂LRH纳米片材料的荧光性能得到显著提升。We produced LRH（Layered Rare-earth Hydroxide） Y_（1.9-X）Eu_（0.1）Bi_X（OH）_5NO_3·nH_2O by solvothermal reaction. The photoluminescence（PL） were investigated with various concentrations of Bi^（3＋） in LRH codoped with 5 at.% Eu^（3＋）, the intencity of LRH enhanced significantly at a Bi^（3＋） concentrationof 0.7 at.%. The interlayer space enlarged after anion exchange under the condition of microwave. X-ray diffraction and transmission electron microscopy revealed that the LRH nanosheets were composed of crystallites with a uniform crystallographic orientation. The photoluminescence intencity of LRH enhanced significantly due to the antenna effect of organic anion. and the size of obtained nanosheets distributed in the range of 500-1000 nm.

关 键 词：层状材料 纳米片 光致发光 剥离 

分 类 号：TQ174.75[化学工程—陶瓷工业]