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. 2024 Nov 23;19(1):193. doi: 10.1186/s11671-024-04146-x

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© The Author(s) 2024

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Fig. 5 — Electrocatalysis a Linear swap voltammogram (LSV) of Bi–Fe₂O₃@GO, Fe₂O₃@GO, and GO in 1 M KOH with a scan rate of 50 mV/s. b Corresponding Tafel plots and c EIS of the synthesized catalysts d Controlled potential electrolysis (CPE) of 20Bi–Fe₂O₃@GO@1.55 V