中文摘要：

采用溶胶凝胶法制备了Eu^3＋掺杂的硅钛柱撑蒙脱土（Si-Ti—MT），运用XRD，SEM—EDX和FTT-IR对其结构进行了表征。结果表明，Eu^3＋掺杂的硅钛柱撑剂插入蒙脱土层之间，保持了蒙脱土层状结构。经荧光发射光谱和激发光谱分析可知，Si—Ti-MT是Eu^3＋发光的有效基体，其发射能级主要为Eu^3＋613nm（^5D0→F2）；激发光谱中表现了Eu^3＋的5个特征激发带，分别为363nm（^7F0→^5D4），382nM（^7F0→^5G2），395nm（^7F0→^5lE），415nm（^7F0→^5D1）和465nm（^7F0→^5D2）；热处理促进了Eu^3＋掺杂的硅钛柱撑蒙脱土的发光，且样品的荧光强度随着Eu^3＋掺杂量的增加而增强，不会发生浓度猝灭现象。

英文摘要：

The Eu^3 ＋ doped silicon-titanium pillared montmorillonite was prepared by the sol-gel method, and the structure was studied by XRD, SEM-EDX and FT-IR. The results indicated that the pillaring agent of Eu^3 ＋ doped silicon-titanium was inserted into the mont- morillonite, which did not destroy the framework of montmorillonite. The results of fluorescence emission spectroscopy and fluorescence excitation spectroscopy showed that the Si-Ti-MT was effective for the fluorescent properties of Eu^3 ＋. The 613 nm emission of Eu^3 ＋ （^5D0→^7F2） was the mainly emission transition. The characteristic excitation lines of Eu^3＋ typically were 363 nm（^F0→^5D4）, 382 nm （^7F0→^5C2）, 395 nm （^7F0→^5L6 ）, 415 nm （^7F0→^5D1 ）, and 465 nm （^7F0→^5D2）. The fluorescent properties of Eu^3＋ doped Si-Ti-MT could be promoted by heat treatment, fluorescence intensity could increase with the content of Eu^3 ＋ , and the concentration quenching phenomenon was not found.