分析化学2026，Vol.54Issue(6)：1064-1073,中插40-中插42,13.DOI:10.19756/j.issn.0253-3820.261063
NaGd(WO4)2:Eu3+荧光材料的合成、表征及手印显现应用研究
Synthesis,Characterization and Application of NaGd(WO4)2:Eu3+Fluorescent Material for Fingerprint Development
摘要
Abstract
The application of rare-earth ion-activated bimetallic tungstates fluorescent materials in the field of latent fingerprint visualization was investiged in this work.A red-emitting NaGd(WO4)2:Eu3+phosphor was synthesized via a high-temperature solid-state reaction,employing NaGd(WO4)2 as host matrix and Eu3+as activator.The phase structure and optical properties of the synthesized material were systematically characterized.X-ray diffraction(XRD)analysis confirmed the successful incorporation of Eu3+ions into the crystal lattice of the NaGd(WO4)2 host without inducing significant structural distortion.Under ultraviolet light excitation,the material exhibited strong photoluminescence originating from the characteristic F-F transitions of the Eu3+ions.The optimal photoluminescence intensity was achieved at a Eu3+doping concentration of 35%(Molar ratio).Further increase in concentration resulted in a quenching effect,which was primarily attributed to electric multipole interactions among the activator ions.The fingerprint development capability of the material was subsequently evaluated.On non-porous surfaces,the NaGd(WO4)2:Eu3+powder provided high contrast between the latent fingerprint ridges and the background substrate,effectively suppressing background interference.The developed fingerprints revealed level 1-3 ridge features in detail,demonstrating the material's high contrast,sensitivity,and selectivity.This work provided a promising new approach for applying rare-earth activated bimetallic tungstates in forensic technology.关键词
稀土/双金属钨酸盐/荧光材料/光学性能/手印显现Key words
Rare earth/Bimetallic tungstates/Fluorescent materials/Optical properties/Fingerprint development引用本文复制引用
张阳,何海铭,姜辉,徐驰,张朝阳,高億民,王禹霏..NaGd(WO4)2:Eu3+荧光材料的合成、表征及手印显现应用研究[J].分析化学,2026,54(6):1064-1073,中插40-中插42,13.基金项目
辽宁省科技计划联合计划项目(No.2025-MSLH-341)和国家级大学生创新训练项目(No.202511432001)资助. Supported by the Joint Program Project of Science and Technology Plan of Liaoning Province(No.2025-MSLH-341)and the National College Student Innovation and Training Program of China(No.202511432001). （No.2025-MSLH-341）
