Synthesis of Zn_0.2Ca_0.8TiO₃:Pr³⁺ via electrochemical assembly on ZSM-5 and its luminescent properties

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• 作者：Fengfeng Li^a ; ¹ ; Xiaomin Wang^a ; ¹ ; Mingxi Zhang^a ; Yi Shen^a ; ^{shenyiwxm@163.com" class="auth_mail" title="E-mail the corresponding author} ; Liying Han^a ; Yanzhi Meng^a ; Zhihong Li^b ; Chenchen Zhao^a
• 关键词：ZSM-5@Zn0.2Ca0.8TiO3 ; Pr3+ ; Long persistent emission ; Mesoporous material ; Electrochemical assembly ; Sol-aided electrophoretic deposition
• 刊名：Journal of the European Ceramic Society
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：35
• 期：15
• 页码：4217-4223
• 全文大小：1511 K

文摘

A composite ZSM-5@Zn_0.2Ca_0.8TiO₃:Pr³⁺ with red long persistent emission was synthesized by the sol-aided electrophoretic deposition technique. The effects of different electrophoresis parameters on luminescence performance were analyzed. The photoluminescence and decay curves show that the sample obtained at a deposition voltage of 10 V and a deposition time of 60 min exhibited the optimal luminous property.The luminescence characteristics of the composite were evaluated by its fluorescence and thermoluminescence (TL) spectra. The fluorescence emission peak at 614 nm can be attributed to the ¹D₂ → ³H₄ transition of Pr³⁺. A broad TL peak was observed in the temperature range 30–120 °C, indicating that the trap may have resulted from the combination of 111111111&_pii=S0955221915300650&_rdoc=1&_issn=09552219&md5=d49a861d804b6929c349920aa76bd276">${\mathrm{V}}_{{\mathrm{O}}_2}^{\text{<glyph name="rad"></glyph>}\text{<glyph name="rad"></glyph>}}$, 111111111&_pii=S0955221915300650&_rdoc=1&_issn=09552219&md5=34ae50548a4d20a98f7950207e5a3c68">${\mathrm{Pr}}_{\mathrm{C}\mathrm{a}}^{\text{<glyph name="rad"></glyph>}}$, and 111111111&_pii=S0955221915300650&_rdoc=1&_issn=09552219&md5=c98f82887bff4bb75fec69787ce29a3d">${\text{Pr}}_{\mathrm{C}\mathrm{a}}^{\text{<glyph name="rad"></glyph>}\text{<glyph name="rad"></glyph>}}$ defects. The main peak was located at 68 °C, which is favorable for long persistent emission. The structure of the composite was characterized by XRD, TEM, and SEM. The results show that ZSM-5 still maintained a rectangular prismatic shape after the assembly, whereas the guest Zn_0.2Ca_0.8TiO₃:Pr³⁺ particles with a size of 100 nm and an almost cubic shape were dispersed densely on the surface of ZSM-5.