In order to study the luminescence materials doped with rare earth ions under different hydrolysis conditions,the material based on B2O3-SiO2 doped with rare-earth ion Tb3+ was synthesized by sol-gel method.Excitation and emission spectroscopy were used to study luminescent properties under the different acid-base catalysis conditions.The results showed that the luminescence in two-step acid-base was best.Using TR,XRD and other modern test technology characterized and analyzed the structure.Results showed that after annealing at 300℃ B2O3 crystals were formed,the excitation spectrum had blue shift,and produced Si—O—B after annealing at 600℃.At this point,the luminescent property was best.It indicated that the network structure of the boron doped silicon dioxide was helpful to the luminescence of material.Finally,the reason was analyzed from the point of view of different hydrolysis mechanism under the acid and alkali conditions.It was concluded that the hydrolysis products of two esters can be more uniformly mixed in the presence of two-step acid-base,which was helpful for B doping into SiO2 structure.
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基金资助
国家自然科学基金资助项目(21261010);内蒙古自治区自然科学基金项目(2015MS0227);内蒙古师范大学“十百千”人才工程第二层次人选(学科带头人)研究基金项目(RCPY-2-2012-K-046)
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