华东师范大学学报（自然科学版） >

2022 , Vol. 2022 >Issue 6: 157 - 168

DOI: https://doi.org/10.3969/j.issn.1000-5641.2022.06.016

化学化工

I-TiO2/Sr2MgSi2O7:Eu,Dy复合光催化剂的制备及性能研究

  • 陈加祥 ,
  • 张哲娟 ,
  • 聂耳 ,
  • 宋也男 ,
  • 朴贤卿 ,
  • 孙卓
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  • 华东师范大学 物理与电子科学学院 纳光电集成与先进装备教育部工程研究中心, 上海　200241

收稿日期: 2021-04-20

  录用日期: 2021-04-21

  网络出版日期: 2022-11-22

基金资助

上海市科委项目 (19DZ1205102, 20DZ1202106)

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Preparation and photocatalysis properties of I-TiO2/Sr2MgSi2O7:Eu,Dy composite photocatalyst

  • Jiaxiang CHEN ,
  • Zhejuan ZHANG ,
  • Er NIE ,
  • Yenan SONG ,
  • Xianqing PIAO ,
  • Zhuo SUN
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  • Engineering Research Center for Nanophotonics and Advanced Instrument (Ministry of Education), School of Physics and Electronic Science, East China Normal University, Shanghai　200241, China

Received date: 2021-04-20

  Accepted date: 2021-04-21

  Online published: 2022-11-22

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摘要

为了实现在无光或弱光环境下对有机污染物的降解, 采用水解法制备了I-TiO2/Sr2MgSi2O7:Eu,Dy复合光催化剂, 并以罗丹明B (Rhodamine B, RhB) 为目标污染物, 进行了光催化降解实验. 结果表明, 当I-TiO2/Sr2MgSi2O7:Eu,Dy复合光催化剂中I-TiO2的质量百分比为30%时, 降解率最高: 在可见光照射下, 3 h内对RhB污染物的降解率达到19.2%; 其在无光源环境下, 6 h内对RhB污染物的降解率达到31.9%. 实验证明, 以Sr2MgSi2O7:Eu,Dy长余辉荧光粉为载体的新型复合光催化剂, 在光照下吸收的光能, 成为无光或弱光环境下的新发光源, 实现可见光复合光催化剂的无光催化, 最终达到全天候24 h催化净化的应用目标.

关键词： Sr2MgSi2O7:Eu; Dy; I-TiO2; 光催化; 长余辉光致发光材料

本文引用格式

陈加祥 , 张哲娟 , 聂耳 , 宋也男 , 朴贤卿 , 孙卓 . I-TiO2/Sr2MgSi2O7:Eu,Dy复合光催化剂的制备及性能研究[J]. 华东师范大学学报（自然科学版）, 2022 , 2022(6) : 157 -168 . DOI: 10.3969/j.issn.1000-5641.2022.06.016

Abstract

A I-TiO2/Sr2MgSi2O7:Eu,Dy composite photocatalyst was prepared via hydrolysis for efficient degradation of organic pollutants in the absence of light. In this paper, the photocatalytic degradation of Rhodamine B (RhB) by the composite photocatalyst was studied. The results show that the degradation ability of I-TiO2/Sr2MgSi2O7:Eu,Dy composite photocatalyst with a I-TiO2 ratio of 30% is better, and the degradation efficiency of RhB pollutants reached 31.9% in 6 h without a light source. These results indicate that a Sr2MgSi2O7:Eu,Dy composite photocatalyst, supported by long afterglow phosphor, can absorb light energy and become a new light source in light-free or low-light environments for the photocatalytic reaction of I-TiO2 in order to achieve 24-hour catalytic purification.

Key words： Sr2MgSi2O7:Eu; Dy; I-TiO2; photocatalytic; long-afterglow luminescence

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