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摘要本课题的研究目标是制备出YPO4纳米晶体以及YPO4·0.8H2O纳米晶体并对其进行性能表征。以水热合成法制备了分别掺杂5%Eu3+和5%Tb3+的YPO4纳米晶体，和Y（0.95-x）PO4·0.8H2O：0.05 Eu3+，x Tb3+（x=0.10，0.20，0.40）纳米晶体。对所制备的样品进行X-射线粉末衍射（XRD）、透射电子显微镜(TEM)、荧光光谱分析(PL)等表征手段。XRD结果表明在180℃，反应4个小时时得到的YPO4纳米晶体和YPO4·0.8H2O纳米晶体都是纯六方相；TEM结果表明在该反应条件下YPO4纳米晶体呈现正方形片状，YPO4·0.8H2O纳米晶体呈现长棒状，两者都排列规则，分散性良好，粒径和长度均匀。PL结果表明，稀土离子共掺的Y（0.95-x）PO4·0.8H2O：0.05 Eu3+，x Tb3+纳米晶体之间的确存在能量转移现象。并且是Tb3+离子作为能量供体转移到Eu3+。47571
Abstract This work is aim to obtain YPO4 and YPO4·0.8H2O nanocrystals,and research the performance characterization of products. Respectively, 5%Eu3+or 5%Tb3+ doped YPO4 nanocomposite materials and Y（0.95-x）PO4·0.8H2O：0.05 Eu3+，x Tb3+（x=0.10，0.20，0.40） nanocomposite materials were successfully prepared by hydrothermal method. The as-prepared samples were characterized by X- ray powder diffraction ( XRD) , scanning electron microscope ( SEM ) and fluorescence spectroscopy (PL) . XRD spectrum shows that when the reaction temperature is 180C，reaction time is 4 hours，the YPO4 and YPO4·0.8H2O nanocrystals is pure hexagonal phase. TEM results indicate that under the reaction conditions YPO4 nanocrystals present square flake,and YPO4·0.8H2O nanocrystals present long Rod-like,both of which flow,good dispersion,uniform particle size and legth. PL results indicate that Y（0.95-x）PO4·0.8H2O：0.05 Eu3+，x Tb3+nanocrystals what are rare earth ions codoping does exist energy transferom phenomenon.And Tb3+ ion as the energy donor transferred to Eu3+.
毕业论文关键词：YPO4纳米晶体; YPO4·0.8H2O纳米晶体; 水热合成法; 荧光光谱
Keyword: YPO4 nanocrystals; YPO4·0.8H2Onanocrystals; Hydrothermal synthesis; Fluorescence spectrum
目 录
一、引 言 5
（一）实验背景概述 5
1.稀土无机纳米发光材料的研究进展 5
2.稀土无机纳米发光材料的优越性 5
3.稀土无机纳米发光材料的制备方法 6
4.稀土无机纳米发光材料的应用前景 6
（二）实验研究内容与意义 7
1.实验研究内容 7
2.实验研究意义 7
二、实验细节 8
（一）材料的制备 8
1.实验试剂 8
2.实验步骤 8
（二）实验仪器 9
三、结果与讨论 9
（一）X-射线粉末衍射 9
1.只有Eu3+或Tb3+的稀土离子掺杂对所得产物晶型的影响 10
2. Eu3+和Tb3+稀土离子共同掺杂对所得产物晶型的影响 11
（二）形貌分析 12
1.只有Eu3+的稀土离子掺杂所得产物的形貌 13
2.Eu3+和Tb3+稀土离子共同掺杂对所得产物的形貌