UiO-66-(COOH)2-Eu@N-GQDs复合发光材料的制备及性能研究

Preparation and Performance of a Composite Luminescent Material UiO-66-(COOH)2-Eu@N-GQDs

摘要

为合成高性能稀土复合发光材料,通过水热法制备了蓝色荧光氮掺杂石墨烯量子点(N-GQDs),并采用后修饰法制备了一种N-GQDs修饰的UiO-66-(COOH)2-Eu复合发光材料。采用傅里叶变换红外光谱仪、X射线衍射仪、扫描电子显微镜、透射电子显微镜、X射线光电子能谱仪等设备对该复合发光材料的结构形貌进行了表征,测试了该复合发光材料的荧光发光性能,并讨论了N-GQDs用量对其性能的影响。实验结果表明,该复合发光材料具有良好的稳定性和发光性能,且少量N-GQDs能提高其发光强度、延长其荧光寿命。

Abstract

To synthesize high-performance rare earth composite luminescent materials, blue fluorescent Nitrogen Doped Graphene Quantum Dots (N-GQDs) were prepared by hydrothermal method, and an N-GQDs modified composite luminescent material UiO-66-(COOH)2-Eu was prepared by post-synthetic modification method. The structural morphology of the composite luminescent material was characterized using Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The fluorescent and luminescent properties of the composite material were tested, and the effect of N-GQDs dosage on the luminescent properties was discussed. The results show that the obtained composite luminescent material has good stability and fluorescent properties, and a small amount of N-GQDs can improve the luminescence intensity and prolong the fluorescence lifetime of the composite material.

关键词

氮掺杂石墨烯量子点 / 金属有机框架 / 后修饰 / 复合材料 / 发光性能

Key words

nitrogen-doped graphene quantum dots / metal-organic framework / post-synthetic modification / composite material / luminescent properties

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基金资助

河北工程大学创新基金资助项目(SJ240100216)

河北省自然科学基金资助项目(E2022402077)

国家自然科学基金资助项目(52308495)