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High-Efficient Visible-Light Photocatalysis Performance and Light-Corrosion Resistance of Ag3PO4 Constructed by double-Z System Composites

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Abstract

Novel visible-light-driven Ag3PO4/AgBr/AgI photocatalysts were prepared via a simple self-assembly strategy combined with in-situ anion-exchanging process. The photocatalytic activity of Ag3PO4 was significantly improved by constructing double-Z system. Specifically, the obtained materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and UV-vis diffuse reflectance spectroscopy (DRS). Under visible light irradiation (λ > 420 nm), the Ag3PO4/AgBr/AgI photocatalysts showed much higher photocatalytic activity than bulk Ag3PO4 for the degradation of formaldehyde (HCHO), and 100% HCHO degradation could be obtained within 28 min. The degradation efficiency could be maintained in five cycles. Further electron paramagnetic resonance (ESR) tests demonstrated that both •OH and •O2− generated in the system. This study provides new insights into the fabrication of highly efficient visible-light-driven photocatalysts and facilitates their practical application in emerging environment issues.

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Acknowledgements

This work was financially supported by China Postdoctoral Science Foundation (2021M701662) and the Excellent Research Program of Nanjing University (ZYJH005).

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Authors and Affiliations

  1. State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023, Nanjing, P.R. China

    Wenran Wang, Yutong Zhang, Liuqing Huang, Hongyi Wang, Cheng Gu & Zhanghao Chen

  2. Nanjing Research Institute of Ecological and Environmental Protection, 175 Huju Road, 210013, Nanjing, P.R. China

    Xueru Yu

  3. School of the Environment, Nanjing University, 210093, Nanjing, Jiangsu, P. R. China

    Zhanghao Chen

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  1. Wenran Wang
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  2. Xueru Yu
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  3. Yutong Zhang
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  4. Liuqing Huang
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  5. Hongyi Wang
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  6. Cheng Gu
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  7. Zhanghao Chen
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Correspondence to Zhanghao Chen.

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Wang, W., Yu, X., Zhang, Y. et al. High-Efficient Visible-Light Photocatalysis Performance and Light-Corrosion Resistance of Ag3PO4 Constructed by double-Z System Composites. Bull Environ Contam Toxicol 109, 1167–1174 (2022). https://doi.org/10.1007/s00128-022-03629-w

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