多元醇溶剂对纳米Gd_2O_3∶Tb^(3+)/SiO_x尺寸及发光性能的影响  

Influence of polyol solvent on size and fluorescent property of Gd_2O_3∶Tb^(3+)/SiO_x nanoparticles

作　　者：杨春林[1] 朱琦玮 欧梅桂[2] 

机构地区：[1]贵阳学院化学与材料工程学院,贵阳550003 [2]贵州大学材料与冶金学院,贵阳550025

出　　处：《化工新型材料》2017年第3期199-201,共3页New Chemical Materials

基　　金：国家自然科学基金项目(51201040);贵州省人社厅留学人员项目(黔人项目资助合同(2013)09号);贵州省科技厅联合基金项目(黔科合J字LKG[2013]11号)

摘　　要：以聚乙二醇(PEG)为溶剂,用多元醇法制备了Tb^(3+)掺杂的纳米Gd_2O_3并在其表面包覆聚硅氧烷壳层,得到了Gd_2O_3∶Tb^(3+)/SiO_x纳米颗粒,研究了不同分子量(200、400、600)PEG对纳米颗粒尺寸及发光的影响。扫描电镜图像表明样品均为分散的球形,其中PEG200制备出的纳米颗粒具有明显核壳结构。马尔文激光粒度仪测试结果表明随着PEG分子量的增大,包覆前的颗粒粒径分别为78、21和28nm,包覆后的颗粒粒径分别为140、32和38nm;发射光谱表明:与PEG400和PEG600相比,PEG200合成出的纳米颗粒的荧光性能最佳。Tb3＋doped Gd2O3nanoparticles（Nps）were synthesized and coated with polysiloxane to obtain the coreshell Gd2O3∶Tb3＋/SiOxnanoparticles by polyol method using PEG as solvent.The influence of different PEG molecular weight（200,400 and 600,respectively）upon the particle size and fluorescent property were investigated.SEM images indicated that all well-dispersed nanoparticles had spherical appearance and distinct core-shell structures were observed in the case of PEG200.The corresponding core-shell nanoparticles’ size was about 140 nm,32nm and 38 nm,when core size was78 nm,21nm and 28 nm,respectively.Emission spectra showed that particles synthesized in PEG200 performed the best fluorescent property compared with PEG400 and PEG600.

关 键 词：多元醇法 聚乙二醇 稀土氧化物 核壳结构 发光性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程]