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. 2020 Mar 9;270:118853. doi: 10.1016/j.apcatb.2020.118853

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Fig. 2 — The number of publications using "TiO₂ + photocatalysis" and "TiO₂ + antibacterial" (inset) as two topic keywords since year 2000 (adapted from Web of Science, Clarivate Analytics; date of search: August 15, 2019).