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. 2022 Jan 25;13:484. doi: 10.1038/s41467-022-28146-6

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Fig. 1 — Red. cat.: reduction cocatalyst; O_x. cat.: oxidation cocatalyst; RHE: reversible hydrogen electrode; HEP: H₂-evolving photocatalyst; OEP: O₂-evolving photocatalyst.