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Formation of Ag3PO4/AgBr composites with Z-scheme configuration by an in situ strategy and their superior photocatalytic activity with excellent anti-photocorrosion performance

  • Jiajia Zhuang
  • Jinsong LiuEmail author
  • Zhengying Wu
  • Ziquan Li
  • Kongjun Zhu
  • Kang Yan
  • Yuan Xu
  • Yanfang Huang
  • Zixia Lin
Article
  • 6 Downloads

Abstract

A novel Ag3PO4/AgBr composite with Z-Scheme structure was constructed and synthesized via a simple in situ ion-exchange strategy on the surface of Ag3PO4 tetrahedra in an alkaline environment. The as-prepared Ag3PO4/AgBr composite has an intimate contact interface and exhibited enhanced visible-light photocatalytic activity, accompanied by superior stability toward degradation of methylene blue (MB) in aqueous solution. Also, a variety of pollutants can be degraded without selectivity, and the degradation efficiency was over 96%. Changes in the bandgap and the detailed degradation mechanism of the Ag3PO4/AgBr composite were analyzed and revealed using characterization analysis, theoretical calculations, and further designed experiments. Sufficient interfacial contact between Ag3PO4 and AgBr was favorable for transferring carriers and lengthening the lifetime of the Z-Scheme system, which simultaneously inhibit photocorrosion and maintain a high degradation rate. The trapping experiments indicate that h+ is a dominant reactive species for the degradation of MB. This Ag3PO4/AgBr photocatalyst with Z-Scheme structure shows great potential for replication and large scale impact on the environmental purification of organic pollutants.

Notes

Acknowledgements

This work was supported by the Fundamental Research Funds for the Central Universities (No. NS2017038), the National Nature Science Foundation of China (NSFC No. 51672130), Natural Science Foundation (NSF) of Jiangsu Province (BK20151198), and Science and Technology Development Project of Suzhou (SYG201818).

Supplementary material

10854_2019_1485_MOESM1_ESM.pdf (537 kb)
Supplementary material 1 (PDF 537 kb)

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Jiajia Zhuang
    • 1
  • Jinsong Liu
    • 1
    • 2
    Email author
  • Zhengying Wu
    • 3
  • Ziquan Li
    • 4
  • Kongjun Zhu
    • 2
  • Kang Yan
    • 2
  • Yuan Xu
    • 2
  • Yanfang Huang
    • 1
  • Zixia Lin
    • 5
  1. 1.Department of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjingChina
  2. 2.State Key Laboratory of Mechanics and Control of Mechanical StructuresNanjing University of Aeronautics and AstronauticsNanjingChina
  3. 3.Laboratory for Environment Functional MaterialsSuzhou University of Science and TechnologySuzhouChina
  4. 4.Institute of Advanced MaterialsNanjing University of Posts and TelecommunicationsNanjingChina
  5. 5.Testing Center of Yangzhou UniversityYangzhou UniversityYangzhouChina

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