Abstract

The lanthanide compound nanoparticles were prepared by the hydrothermal method. They were characterized by x-ray diffractometer, scanning electron microscopy, ultraviolet-visible spectrophotometry and photoluminescence. The x-ray diffractometer patterns of all samples indicated crystallization of pure ceria fluorite cubic phase. The optical properties of cerium oxide nanoparticles have changed with the increase of erbium ion in initial reactants. Two peaks at 739 and 780 nm are observed in photoluminescence spectra at 200 nm excitation in the range of 400–800 nm. The lanthanide compound nanoparticles with strongest luminescence were identified in the samples.

摘要

通过水热法制备镧系化合物纳米颗粒。它们通过X射线衍射仪，扫描电子显微镜，紫外可见分光光度法和光致发光来表征。所有样品的X射线衍射图谱表明纯的二氧化铈萤石立方相结晶。氧化铈纳米粒子的光学性质随着初始反应物中of离子的增加而改变。在200-nm激发范围内（400-800 nm），在光致发光光谱中观察到739和780 nm处的两个峰。在样品中鉴定出具有最强发光的镧系元素化合物纳米颗粒。