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Fabrication of Ag3PO4-AgBr-PTh composite loaded on Na2SiO3 with enhanced visible-light photocatalytic activity

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Abstract

A novel Ag3PO4-AgBr-PTh composite loaded on Na2SiO3 was synthesized for enhanced visible-light photocatalytic activity. The photocatalytic activity of the samples was evaluated by photodegrading rhodamine B (RhB) under visible light irradiation. The main reactive species and possible photocatalytic mechanism were also discussed. As a result, the Ag3PO4-AgBr-PTh composite loaded on Na2SiO3 exhibited enhanced photocatalytic activity for RhB compared with Ag3PO4 under visible-light irradiation. Additionally, it was demonstrated that the hole (h+) and superoxide radical (•O −2 ) were the major reactive species involving in the RhB degradation. PTh played vital role for the enhanced photocatalytic activity of Ag3PO4-AgBr-PTh-Na2SiO3 composite, which offered an electron transfer expressway and accelerated the transfer of the electrons from the CB of AgBr into Ag3PO4. This work could provide a new perspective for the synthesis of Ag3PO4-based composites and the improvement of photocatalytic activity of Ag3PO4.

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Acknowledgement

This work was supported by the open topics of State Key Laboratory of Pollution Control and Resource Research (PCRRF14006).

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  1. School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China

    Xiaojun Niu & Jinling Ma

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  1. Xiaojun Niu
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  2. Jinling Ma
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Correspondence to Xiaojun Niu.

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Niu, X., Ma, J. Fabrication of Ag3PO4-AgBr-PTh composite loaded on Na2SiO3 with enhanced visible-light photocatalytic activity. Front. Mater. Sci. 12, 264–272 (2018). https://doi.org/10.1007/s11706-018-0430-3

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  • DOI: https://doi.org/10.1007/s11706-018-0430-3

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