Spectral Characteristic and Its Regularity of Rare Earth Ions in Inorganic Microporous Material Ⅰ.The Spectral Characteristics of Eu^(3+) in NaY,NaX and NaA Zeolites

摘要

In this paper,we have investigated the spectral characteristics of Eu3+ion sorbed on NaY,NaX and NaAzeolites.During calcination,the influence of Eu3+ion’s positions in zeolites on its spectral structures are dis-cussed emphatically.The experimental results show that the electric dipole-to-magnetic dipole transition inten-sity ratios of Eu3+emission in NaY,NaX and NaA zeolites calcinated at the same temperature increase inproper order.The bonding actions between Eu3+ion and framework oxygens are studied by the measurementsof excitation spectra and X-ray photoelectron spectroscopy.In the Eu3+content ranging from 0.95% to10.5%,the concentration quenching of the fluorescence in Eu（Ⅲ）-NaY is not observed.