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. 2020 Sep 30;755:142588. doi: 10.1016/j.scitotenv.2020.142588

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Fig. 4 — Representative pathogen damage induced by g-C₃N₄-based metal-free visible-light-enabled photocatalytic disinfection: SEM images of Escherichia coli bacteria (a) before and (b) after treatment with PMS addition, and TEM images of human adenoviruses (c) before and (d) after treatment with H₂O₂ addition.