fig5

Figure 5. SEM images of (A, B) c-Cu₂O NPs; (C, D) o-Cu₂O NPs; and (E, F) t-Cu₂O NPs. (Reproduced with permission^[73]. Copyright 2020, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim); (G) The preparation of TA-Cu via electrochemical reconstruction of CuTA; (H) FEs of TA-Cu obtained at different applied potentials; (I) Stability for CO₂ electrolysis with the TA-Cu. (Reproduced with permission^[76]. Copyright 2023, Wiley-VCH GmbH). NPs: Nanoparticles; TA: Tannic acid ; FE: Faraday efficiency; SEM: Scanning electron microscope.