LaPO_4∶Eu^(3+)纳米晶的合成及其在指印显现中的应用  

Synthesis of LaPO_4:Eu^(3+) nano-material and its application in fingerprint manifestation

作　　者：代雪晶[1,2] 汤澄清[2] 邵义[1] 

机构地区：[1]沈阳工业大学材料科学与工程学院,沈阳110870 [2]中国刑事警察学院刑事技术系,沈阳110854

出　　处：《沈阳工业大学学报》2009年第6期649-653,共5页Journal of Shenyang University of Technology

基　　金：辽宁省教育厅重点实验室项目(20082482)

摘　　要：为了研究新型高效的、对人体无毒、对环境无污染的显现指印的无机纳米荧光材料,采用草酸盐共沉淀法制备纳米发光材料LaPO4∶Eu3+,并利用PAMAM树形分子配置LaPO4∶Eu3+/PAM-AM G5.0水体系纳米复合材料来显现潜在指印.同时,探讨了烧结温度和发光中心浓度对纳米发光材料LaPO4∶Eu3+的荧光强度的影响,并对合成的纳米荧光材料进行了XRD、SEM、荧光光谱分析表征.结果表明:LaPO4∶Eu3+的粒径大小约为70nm;纳米荧光材料的最佳激发光波长和发射光谱分别为230nm和580nm.LaPO4∶Eu3+/PAMAM G5.0的水体系纳米复合材料在紫外线的照射下对光滑客体上的指印具有理想、稳定的显现效果.In order to develop more effective, nontoxic and environment-friendly inorganic luminescent nano-materials for manifesting fingerprint, the Eu^3＋ doped LaPO4 nano-materials were synthesized by oxalate coprecipitation method. The nano LaPO4： Eu3^＋/PAMAM G5.0 solution was utilized to manifest the latent fingerprint. The influence of both sintering temperature and Eu^3＋ content on the fluorescence intensity of the LaPO4： Eu3＋ nano-materials was studied. And the LaPO4： Eu^3＋ nano-materials were characterized by XRD, SEM and fluorescence spectra analysis. The results indicate that the particle diameter of the LaPO4： Eu^3＋ nano-materials is about 70nm. The optimal excitation wavelength and emission spectrum of the LaPO4 ： Eu^3＋ nano-materials are 230 nm and 580nm, respectively. The fingerprint details on the surface of smooth objects can be clearly manifestation with the LaPO4 ： Eu^3＋/PAMAM G5.0 solution under the irradiation of UV light.

关 键 词：LaPO4∶Eu3+纳米晶 草酸盐共沉淀法 SEM分析 XRD谱图 激发光谱 发射光谱 PAMAM树形分子 指印显现 

分 类 号：O482.3[理学—固体物理]