Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5442890 | Optical Materials | 2017 | 7 Pages |
Abstract
In this paper, long afterglow luminescent materials CaAl2O4:Eu2+, Nd3+ and SrAl2O4:Eu2+, Dy3+ were successfully synthesized by high temperature solid state reaction using the alumina extracted from oil shale ash. The properties of samples were characterized using X-ray diffraction (XRD), X-ray fluorescence (XRF) photoluminescence (PL) spectra, thermoluminescent (TL) curve, long afterglow material optical test system. CaAl2O4:Eu2+, Nd3+ and SrAl2O4:Eu2+, Dy3+ prepared with alumina extracted from oil shale ash showed persistent phosphorescence in blue (440Â nm) and green (515Â nm) with persistence time over 10Â h for the blue and 8Â h for the green. This result indicates that the alumina extracted from oil shale ash can be used to prepare fluorescent materials. This reuse can not only utilize the oil shale ash rationally but also substantially increased the added-value of oil shale ash.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Tingting Cui, Pingchuan Ma, Ye Sheng, Keyan Zheng, Xiuqing Zhou, Chengyi Xu, Haifeng Zou, Yanhua Song,