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Surface modification of SrAl_2O_4:Eu~(2+), Dy~(3+) phosphors using silica encapsulation

机译：SrAl_2O_4：Eu〜（2+），Dy〜（3+）荧光粉的表面改性

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Silica encapsulated phosphors SrAl_2O_4:Eu~(2+), Dy~(3+) have been synthesized by non-homogeneous phase coring method, in which glycerol was firstly used as dispersion medium and hyper-dispersant was introduced as additive. IR, BET and scanning electron microscopy (SEM) demonstrated that a dense layer of silica was formed on the surface of phosphor SrAl_2O_4:Eu~(2+), Dy~(3+). The results showed that the encapsulated phosphors possess good properties in water-resistance, heat-resistance and dispersibility when encapsulation amount reached 8 wt. %. Moreover, the photoluminescence intensity of phosphors SrAl_2O_4:Eu~(2+), Dy~(3+) was improved apparently after surface modification. All results revealed that silica encapsulation would effectively improve alkaline earth aluminates phosphors' properties and using glycerol as the dispersion medium is helpful to silica encapsulation.

机译：采用非均相相取芯法合成了二氧化硅包封的荧光粉SrAl_2O_4：Eu〜（2 +），Dy〜（3+），首先以甘油为分散介质，引入超分散剂为添加剂。 IR，BET和扫描电子显微镜（SEM）表明，在荧光粉SrAl_2O_4：Eu〜（2 +），Dy〜（3+）的表面形成了致密的二氧化硅层。结果表明，当包封量达到8 wt。％时，包封的荧光粉具有良好的耐水性，耐热性和分散性。％。此外，表面改性后，SrAl_2O_4：Eu〜（2 +），Dy〜（3+）荧光粉的光致发光强度明显提高。所有结果表明，二氧化硅包封将有效地改善碱土金属铝酸盐荧光粉的性能，并且使用甘油作为分散介质有助于二氧化硅包封。

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来源
《Powder Technology and Application》|2008年|199-204|共6页
会议地点 Beijing(CN)
作者
Ruifang Li; Junwei Ye; Jinghui Wang; Xiaobin Lu; Yuan Lin; Guiling Ning;
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作者单位

State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, 158 Zhongshan Road, Dalian 116012, P. R. China;

State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, 158 Zhongshan Road, Dalian 116012, P. R. China;

State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, 158 Zhongshan Road, Dalian 116012, P. R. China;

State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, 158 Zhongshan Road, Dalian 116012, P. R. China;

State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, 158 Zhongshan Road, Dalian 116012, P. R. China;

State Key Laboratory of F;

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会议组织
原文格式 PDF
正文语种 eng
中图分类粉末技术;
关键词
aluminate-based phosphors; silica; encapsulation; modification;

机译：铝酸盐基磷光体；二氧化硅封装修改;

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专利

1. Thermoluminescence and infrared stimulated luminescence in long persistent monoclinic SrAl_2O_4:Eu~(2+) ,Dy~(3+) and SrAl_2O_4:Eu~(2+) ,Nd~(3+) phosphors [J] . Chernov V, Salas-Castillo P., Diaz-Torres L. A., Optical Materials . 2019,第JUNa期

机译：长持续单斜SrAl_2O_4：Eu〜（2 +），Dy〜（3+）和SrAl_2O_4：Eu〜（2 +），Nd〜（3+）荧光粉的热致发光和红外激发光
2. Thermoluminescence and infrared stimulated luminescence in long persistent monoclinic SrAl_2O_4:Eu~(2+) ,Dy~(3+) and SrAl_2O_4:Eu~(2+) ,Nd~(3+) phosphors [J] . Chernov V, Salas-Castillo P., Diaz-Torres L. A., Optical Materials . 2019,第Juna期

机译：热致发光和红外刺激的发光在长期持久性单斜晶体_2O_4：Eu〜（2+），Dy〜（3+）和SRAL_2O_4：EU〜（2+），ND〜（3+）磷光体
3. Role of rhodamine-B dye encapsulated mesoporous SiO_2 in color tuning of SrAl_2O_4:Eu~(2+),Dy~(3+) composite long lasting phosphor [J] . Sourav Das, J. Manam, S. K. Sharma Journal of materials science . 2016,第12期

机译：罗丹明B染料包裹的中孔SiO_2在SrAl_2O_4：Eu〜（2 +），Dy〜（3+）复合长效荧光粉的颜色调节中的作用
4. Surface modification of SrAl_2O_4:Eu~(2+), Dy~(3+) phosphors using silica encapsulation [C] . International forum on powder technology application . 2009

机译：SRAL_2O_4的表面改性：EU〜（2+），DY〜（3+）磷光体使用二氧化硅封装
5. Applications of a three-body potential model and crystal field calculations to the simulation of europium(3+), erbium(3+) and ytterbium(3+) environments on lead silicate glass [D] . Peres, Tania 1999

机译：三体电势模型和晶体场计算在硅酸铅玻璃上（（3+），（3+）和（3+）环境模拟中的应用
6. The Improvement of Moisture Resistance and Organic Compatibility of SrAl2O4: Eu2+ Dy3+ Persistent Phosphors Coated with Silica–Polymer Hybrid Shell [O] . Lei Lyu, Yuxian Chen, Liting Yu, 2020

机译：二氧化硅-聚合物杂化壳包覆的SrAl2O4：Eu2 +Dy3 +持久荧光粉的耐湿性和有机相容性的改善
7. Influence of Eu$sup$2+$/sup$ and Dy$sup$3+$/sup$ Concentrations on the Fluorescence and Phosphorescence of Sr$inf$2$/inf$MgSi$inf$2$/inf$O$inf$7$/inf$ Phosphors [O] . MAO Qi-Nan, LI He, JI Zhen-Guo, 2016

机译：eu $ sup $ 2 + $ / sup $ 和dy $ sup $ 3 + $ / sup $ 浓度对SR的荧光和磷光，LT; INF $ GT; 2 $ LT; / INF $ GT; MGSI $ LT; INF $ GT; 2 $ LT; / INF $ GT; O $ LT; INF $ GT; 7 $ / inf $ 荧光粉

Surface modification of SrAl_2O_4:Eu~(2+), Dy~(3+) phosphors using silica encapsulation

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