Applied Physics A

, 125:862 | Cite as

La2MgTiO6:Eu2+/TiO2-based composite for methyl orange (MO) decomposition

  • Jinyong Huang
  • Ming QinEmail author
  • Juan Yu
  • Aili Ma
  • Xiaokang Yu
  • Jianbo Liu
  • Zhiqin ZhengEmail author
  • Xinxing WangEmail author


In the recent years, exploring new materials with the photocatalytic functions is a hot research subject, but most of the photocatalysts need an excitation source during the photocatalytic process. In this work, we report the double-perovskite La2MgTiO6:Eu2+ phosphor having the purple-blue afterglow luminescence. Our PL results show that the samples upon excitation at the UV light can show a broad Eu2+ band with the maximum emission intensity at 387 nm. The afterglow range is found to match with the UV absorption region of the TiO2. As a result, we design the UV converted Eu2+ afterglow composite by serving the La2MgTiO6:Eu2+ phosphor as a ceramic substrate to immobilize the TiO2. The photocatalytic experiments reveal the afterglow behavior of La2MgTiO6:Eu2+ phosphor can continuously provide the UV photons to the TiO2 absorption, leading to a continuous-photocatalytic methyl orange degradation in the absence of UV irradiation. Together with the photocatalytic process under the UV irradiation and after removal off the excitation source, a maximum photocatalytic time of 3.5 h is detected.



This work was financially supported by the Innovative University Projects of Guangdong province (Project No. 831783), and the Quality Engineering Construction Projects of Beijing Institute of Technology University (Zhuhai Campus) (Project No. 2016003ZL, and 2017007JXGG), as well as Longshan academic talent research supporting program of Southwest University of Science and Technology (Project No. 18lzxt03, and No. 18zx309) and Southwest University of Science and Technology Natural Science Foundation (Project No. 18zx7125).


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Materials and EnvironmentZhuhai Campus of Beijing Institute TechnologyZhuhaiChina
  2. 2.School of Engineering TechnologyBeijing Normal University ZhuhaiZhuhaiChina
  3. 3.Key Laboratory of Degraded and Unused Land Consolidation EngineeringThe Ministry of Land and ResourcesXi’anChina
  4. 4.Shaanxi Provincial Land Consolidation Engineering Technology Research CenterXi’anChina
  5. 5.Fundamental Science on Nuclear Wastes and Environmental Safety LaboratorySouthwest University of Science and TechnologyMianyangChina
  6. 6.National Co-Innovation Center for Nuclear Waste Disposal and Environmental SafetySouthwest University of Science and TechnologyMianyangChina
  7. 7.School of Life Sciences and EngineeringSouthwest University of Science and TechnologyMianyangChina

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