Fabrication of novel p-Ag2O/n-PbBiO2Br heterojunction photocatalysts with enhanced photocatalytic performance under visible-light irradiation

  • Zuming HeEmail author
  • Jiangbin SuEmail author
  • Rui Chen
  • Bin Tang


The p-Ag2O/n-PbBiO2Br heterojunctions were prepared by the polyacrylamide gel synthesis and chemical deposition method. The as-synthesized Ag2O/PbBiO2Br photocatalysts were characterized in details by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscope (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscope (TEM), electron spin resonance (ESR), ultraviolet-visible diffuse reflectance spectroscopy (UV–Vis DRS) and electrochemical workstation. Compared with the pure PbBiO2Br and Ag2O, the Ag2O/PbBiO2Br photocatalysts exhibit enhanced photocatalytic activities for the degradation of methylene blue (MB) under visible-light irradiation. In particular, the Ag2O/PbBiO2Br(1:1) composite shows the optimal photocatalytic performance. The degradation efficiency of MB reaches 99.2% in 50 min, and the best reaction rate constant reaches 5.982 × 10−2 min−1, which is 7.6 and 10.2 times higher than that of pure Ag2O and PbBiO2Br, respectively. The significantly enhanced photocatalytic performance of Ag2O/PbBiO2Br photocatalysts could be attributed to the broadened light absorption and the formation of the p–n heterojunctions between Ag2O and PbBiO2Br. Consequently the photo-generated electron–hole pairs can be separated effectively. Through the ESR technique and the radical trapping experiments, the superoxide (\(\cdot {\text{O}}_{2}^{-}\)) radicals and holes are demonstrated to play the major role in the MB degradation. Finally, based on the experimental results and analyses, the photocatalytic mechanism of the Ag2O/PbBiO2Br composites was proposed.



This work was supported by the Natural Science Foundation of Jiangsu Province (BK20181043) and the Specialized Research Fund for the Doctoral Program of Jiangsu University of Technology (KYY17011)

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.

Supplementary material


  1. 1.
    L.J. Di, T. Xian, X.F. Sun, H.Q. Li, Y.J. Zhou, J. Ma, H. Yang, Facile preparation of CNT/Ag2S nanocomposites with improved visible and NIR light photocatalytic degradation activity and their catalytic mechanism. Micromachines 10, 503 (2019)CrossRefGoogle Scholar
  2. 2.
    Y.M. Xia, Z.M. He, W. Yang, B. Tang, Y.L. Lu, K.J. Hu, J.B. Su, X.P. Li, Effective charge separation in BiOI/Cu2O composites with enhanced photocatalytic activity. Mater. Res. Express 5, 025504 (2018)CrossRefGoogle Scholar
  3. 3.
    Z.M. He, Y.M. Xia, B. Tang, X.F. Jiang, J.B. Su, Fabrication and photocatalytic property of ZnO/Cu2O core–shell nanocomposites. Mater. Lett. 184, 148–151 (2016)CrossRefGoogle Scholar
  4. 4.
    X.X. Zhao, H. Yang, Z.M. Cui, Z. Yi, H. Yu, Synergistically enhanced photocatalytic performance of Bi4Ti3O12 nanosheets by Au and Ag nanoparticles. J. Mater. Sci. 30, 13785–13796 (2019)Google Scholar
  5. 5.
    Y.M. Xia, Z.M. He, Y.L. Lu, B. Tang, S.P. Sun, J.B. Su, X.P. Li, Fabrication and photocatalytic property of magnetic SrTiO3/NiFe2O4 heterojunction nanocomposites. RSC Adv. 8, 5441–5450 (2018)CrossRefGoogle Scholar
  6. 6.
    H.J. Gao, C.X. Zheng, H. Yang, X.W. Niu, S.F. Wang, Construction of a CQDs/Ag3PO4/BiPO4 heterostructure photocatalyst with enhanced photocatalytic degradation of rhodamine B under simulated solar irradiation. Micromachines 10, 557 (2019)CrossRefGoogle Scholar
  7. 7.
    Z.M. He, Y.M. Xia, J.B. Su, B. Tang, Fabrication of magnetically separable NiFe2O4/Bi24O31Br10 nanocomposites and excellent photocatalytic performance under visible light irradiation. Opt. Mater. 88, 195–203 (2019)CrossRefGoogle Scholar
  8. 8.
    Y.M. Xia, Z.M. He, J.B. Su, K.J. Hu, Polyacrylamide gel synthesis and photocatalytic performance of PbBiO2Br nanosheets. Mater. Lett. 241, 64–67 (2019)CrossRefGoogle Scholar
  9. 9.
    A. Lebedev, F. Anariba, X. Li, D.S.H. Leng, P. Wu, Ag/Ag2O/BiNbO4 structure for simultaneous photocatalytic degradation of mixed cationic and anionic dyes. Sol. Energy 178, 257–267 (2019)CrossRefGoogle Scholar
  10. 10.
    Z.M. Yang, C.H. Deng, Y.H. Ding, H.A. Luo, J.R. Yin, Y.H. Jiang, P. Zhang, Y. Jiang, Eco-friendly and effective strategy to synthesize ZnO/Ag2O heterostructures and its excellent photocatalytic property under visible light. J. Solid State Chem. 268, 83–93 (2018)CrossRefGoogle Scholar
  11. 11.
    X.W. Ruan, H. Hu, H.N. Che, G.B. Che, C.M. Li, C.B. Liu, H.J. Dong, Facile fabrication of Ag2O/Bi12GeO20 heterostructure with enhanced visible-light photocatalytic activity for the degradation of various antibiotics. J. Alloys Compd. 773, 1089–1098 (2019)CrossRefGoogle Scholar
  12. 12.
    S.H. Liang, D.F. Zhang, X.P. Pu, X.T. Yao, R.T. Han, J. Yin, X.Z. Ren, A novel Ag2O/g-C3N4 p–n heterojunction photocatalysts with enhanced visible and near-infrared light activity. Sep. Purif. Technol. 210, 786–797 (2019)CrossRefGoogle Scholar
  13. 13.
    Y.M. Xia, Z.M. He, J.B. Su, Y. Liu, B. Tang, X.P. Li, Fabrication of novel n-SrTiO3/p-BiOI heterojunction for degradation of crystal violet under simulated solar light irradiation. NANO 13(6), 1850070 (2018)CrossRefGoogle Scholar
  14. 14.
    Y.M. Xia, Z.M. He, J.B. Su, X.P. Li, B. Tang, One-step construction of novel PbBiO2Br/ZnO heterojunction composites with enhanced photocatalytic activity. Phys. Status Solidi (a) (2019). CrossRefGoogle Scholar
  15. 15.
    K. Gurung, M.C. Ncibi, S.K. Thangaraj, J. Jänis, M. Seyedsalehic, M. Sillanpää, Removal of pharmaceutically active compounds (PhACs) from real membrane bioreactor (MBR) effluents by photocatalytic degradation using composite Ag2O/P-25 photocatalyst. Sep. Purif. Technol. 215, 317–328 (2019)CrossRefGoogle Scholar
  16. 16.
    D. Zhang, S. Cui, J. Yang, Preparation of Ag2O/g-C3N4/Fe3O4 composites and theapplication in the photocatalytic degradation of Rhodamine B under visible light. J. Alloys Compd. 708, 1141–1149 (2017)CrossRefGoogle Scholar
  17. 17.
    Y.M. Xia, Z.M. He, J.B. Su, K.J. Hu, Construction of novel Cu2O/PbBiO2Br composites with enhanced photocatalytic activity. J. Mater. Sci. 30, 9843–9854 (2019)Google Scholar
  18. 18.
    M. Pooladi, H. Shokrollahi, S.A.N.H. Lavasani, H. Yang, Investigation of the structural, magnetic and dielectric properties of Mn-doped Bi2Fe4O9 produced by reverse chemical co-precipitation. Mater. Chem. Phys. 229, 39–48 (2019)CrossRefGoogle Scholar
  19. 19.
    S.F. Wang, H.J. Gao, Y. Wei, Y.W. Li, X.H. Yang, L.M. Fang, L. Lei, Insight into the optical, color, photoluminescence properties, and photocatalytic activity of the N-O and C-O functional groups decorating spinel type magnesium aluminate. CrystEngComm 21, 263–277 (2019)CrossRefGoogle Scholar
  20. 20.
    S.Y. Wang, H. Yang, X.X. Wang, W.J. Feng, Surface disorder engineering of flake-like Bi2WO6 crystals for enhanced photocatalytic activity. J. Electron. Mater. 48, 2067–2076 (2019)CrossRefGoogle Scholar
  21. 21.
    Y.M. Xia, Z.M. He, J.B. Su, One-step construction of novel Ag3PO4/PbBiO2Br composite with enhanced photocatalytic activity. Mater. Res. Express 6, 085909 (2019)CrossRefGoogle Scholar
  22. 22.
    S. Ma, J. Xue, Y. Zhou, Z. Zhang, Enhanced visible-light photocatalytic activity of Ag2O/g-C3N4 p–n heterojunctions synthesized via a photochemical route for degradationof tetracycline hydrochloride. RSC Adv. 5, 40000–40006 (2015)CrossRefGoogle Scholar
  23. 23.
    Y.X. Yan, H. Yang, Z. Yi, T. Xian, R.S. Li, X.X. Wang, Construction of Ag2S@CaTiO3 heterojunction photocatalysts for enhanced photocatalytic degradation of dyes. Desalin. Water Treat. (2019). CrossRefGoogle Scholar
  24. 24.
    Y.M. Xia, Z.M. He, J.B. Su, B Tang Y liu, Enhanced photocatalytic performance of Z-scheme Cu2O/Bi5O7I nanocomposites. J. Mater. Sci. 29, 15271–15281 (2018)Google Scholar
  25. 25.
    Y. Liu, S. Wei, W. Gao, Ag/ZnO heterostructures and their photocatalytic activity under visible light: effect of reducing medium. J. Hazard. Mater. 287, 59–68 (2015)CrossRefGoogle Scholar
  26. 26.
    Y.L. Yu, S.L. Huang, Y. Gu, S. Yan, Z.J. Lan, W.J. Zheng, Y.A. Cao, Study of PbBiO2X (X = Cl, Br and I) square nanoplates with efficient visible photocatalytic performance. Appl. Surf. Sci. 428, 844–850 (2018)CrossRefGoogle Scholar
  27. 27.
    Z.M. He, B. Tang, J.B. Su, Y.M. Xia, Fabrication of novel Cu2O/Bi24O31Br10 composites and excellent photocatalytic performance. J. Mater. Sci. 29, 19544–19553 (2018)Google Scholar
  28. 28.
    Y.X. Yan, H. Yang, Z. Yi, T. Xian, X.X. Wang, Direct Z-scheme CaTiO3@BiOBr composite photocatalysts with enhanced photodegradation of dyes. Environ. Sci. Pollut. Res. (2019). CrossRefGoogle Scholar
  29. 29.
    Z.M. He, Y.M. Xia, J.B. Su, Fabrication of novel AgBr/Bi24O31Br10 composites with excellent photocatalytic performance. RSC Adv. 8, 39187–39196 (2018)CrossRefGoogle Scholar
  30. 30.
    B. Wang, J. Di, G.P. Liu, S. Yin, J.X. Xia, Q. Zhang, H.M. Li, Novel mesoporous graphitic carbon nitride modified PbBiO2Br porous microspheres with enhanced photocatalytic performance. J. Colloid Interface Sci. 507, 310–322 (2017)CrossRefGoogle Scholar
  31. 31.
    Z. Yang, P. Zhang, Y. Ding, Y. Jiang, Z. Long, W. Dai, Facile synthesis of Ag/ZnO heterostructures assisted by UV irradiation: highly photocatalytic property and enhanced photostability. Mater. Res. Bull. 46, 1625–1631 (2011)CrossRefGoogle Scholar
  32. 32.
    Z.C. Shan, W.D. Wang, X.P. Lin, H.M. Ding, F.Q. Huang, Photocatalytic degradation of organic dyes on visible-light responsive photocatalyst PbBiO2Br. J. Solid State Chem. 181, 1361–1366 (2008)CrossRefGoogle Scholar
  33. 33.
    M. Singha, R. Gupta, Structural and magnetic studies on polycrystalline Ni doped ZnV2O4. Phys. B 563, 101–106 (2019)CrossRefGoogle Scholar
  34. 34.
    S.Y. Wang, H. Yang, Z. Yi, X.X. Wang, Enhanced photocatalytic performance by hybridization of Bi2WO6 nanoparticles with honeycomb-like porous carbon skeleton. J. Environ. Manag. 248, 109341 (2019)CrossRefGoogle Scholar
  35. 35.
    Y.M. Xia, Z.M. He, K.J. Hu, B. Tang, J.B. Su, Y. Liu, X.P. Li, Fabrication of n-SrTiO3/p-Cu2O heterojunction composites with enhanced photocatalytic performance. J. Alloys Compd. 753, 356–363 (2018)CrossRefGoogle Scholar
  36. 36.
    Y.M. Xia, Z.M. He, J.B. Su, Y. Liu, B. Tang, Fabrication and photocatalytic property of novel SrTiO3/Bi5O7I nanocomposites. Nanoscale Res. Lett. 13, 148 (2018)CrossRefGoogle Scholar
  37. 37.
    Z.M. He, Y.M. Xia, B. Tang, J.B. Su, Fabrication and photocatalytic property of magnetic NiFe2O4/Cu2O composites. Mater. Res. Express 4, 095501 (2017)CrossRefGoogle Scholar
  38. 38.
    Z. Sun, J. Guo, S. Zhu, L. Mao, J. Ma, D. Zhang, A high performance Bi2WO6 graphene photocatalyst for visible light-induced H2 and O2 generation. Nanoscale 6, 2186–2193 (2014)CrossRefGoogle Scholar
  39. 39.
    L.J. Di, H. Yang, T. Xian, X.J. Chen, Facile synthesis and enhanced visible-light photocatalytic activity of novel p-Ag3PO4/n-BiFeO3 heterojunction composites for dye degradation. Nanoscale Res. Lett. 13, 257 (2018)CrossRefGoogle Scholar
  40. 40.
    H.P. Lin, W.W. Lee, S.T. Huang, L.W. Chen, T.W. Yeh, J.Y. Fu, C.C. Chen, Controlled hydrothermal synthesis of PbBiO2Br/BiOBr heterojunction with enhanced visible-driven-light photocatalytic activities. J. Mol. Catal. A 417, 168–183 (2016)CrossRefGoogle Scholar
  41. 41.
    X.J. Wen, C.G. Niu, L. Zhang, C. Liang, G.M. Zeng, An in depth mechanism insight of the degradation of multiple refractory pollutants via a novel SrTiO3/BiOI heterojunction photocatalysts. J. Catal. 356, 283–299 (2017)CrossRefGoogle Scholar
  42. 42.
    H. He, Y. Du, X. Chu, P.K. Zhang, General and facile approach to heterostructured core/shell BiVO4/BiOI p–n junction: room-temperature in situ assembly and highly boosted visible-light photocatalysis. ACS Sustain. Chem. Eng. 3, 3262–3273 (2015)CrossRefGoogle Scholar
  43. 43.
    S.M. Wang, Y. Guan, L.P. Wang, W. Zhao, H. He, J. Xiao, S.G. Yang, C. Sun, Fabrication of a novel bifunctional material of BiOI/Ag3VO4 with high adsorption-photocatalysis for efficient treatment of dye wastewater. Appl. Catal. B 168–169, 448–457 (2015)CrossRefGoogle Scholar
  44. 44.
    Y.X. Yan, H. Yang, Z. Yi, T. Xian, NaBH4-reduction induced evolution of Bi nanoparticles from BiOCl nanoplates and construction of promising Bi@BiOCl hybrid photocatalysts. Catalysts 9, 795 (2019)CrossRefGoogle Scholar

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Authors and Affiliations

  1. 1.Huaide SchoolChangzhou UniversityJingjiangChina
  2. 2.School of Mathematics & PhysicsChangzhou UniversityChangzhouChina

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