Abstract
In this work, Bi spheres were deposited on bulk WO3·0.33H2O and TiO2 (P25) nanoparticles to form Z-scheme Bi/TiO2/WO3·0.33H2O heterojunction material for the first time by a simple hydrothermal method. The as-prepared materials were comprehensively characterized by XRD, XPS, SEM, TEM, UV–Vis DRS, BET surface area, EIS, and Mott-Schottky analysis. The ternary Bi/TiO2/WO3·0.33H2O composites exhibited superior degradation efficiency for RhB than pure WO3·0.33H2O, TiO2 (P25), and their binary composites. The degradation rate reached 99.84% after 30 min under simulated sunlight. The enhancement of photocatalytic activity could be attributed to the Z-scheme heterojunction system with metal Bi as an electronic medium, which greatly enhanced the efficiency of charge separation. This report demonstrated that Z-scheme Bi/TiO2/WO3·0.33H2O heterojunction photocatalytic material has potential application value in dye wastewater treatment.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (No. 21671026) and Hunan Collaborative Innovation Center of Environmental and Energy Photocatalysis.
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Deng, Y., Zhou, Y., Tang, H. et al. Synthesis of Z-scheme Bi/TiO2/WO3·0.33H2O heterojunction material for the enhanced photocatalytic degradation of pollutants. J Mater Sci: Mater Electron 31, 11276–11285 (2020). https://doi.org/10.1007/s10854-020-03676-1
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DOI: https://doi.org/10.1007/s10854-020-03676-1