Journal of East China Normal University(Natural Science) ›› 2022, Vol. 2022 ›› Issue (6): 157-168.doi: 10.3969/j.issn.1000-5641.2022.06.016

• Chemistry and Chemical Engineering • Previous Articles     Next Articles

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

Jiaxiang CHEN, Zhejuan ZHANG, Er NIE, Yenan SONG, Xianqing PIAO, Zhuo SUN*()   

  1. 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:2021-04-20 Accepted:2021-04-21 Online:2022-11-25 Published:2022-11-22
  • Contact: Zhuo SUN


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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