fig10

Figure 10. (A) HAADF-STEM image of Ag/Cu interface in Ag₆₅-Cu₃₅ JNS-100; (B) HAADF-STEM images of Ag₆₅-Cu₃₅ JNS-100; (C) EDS elemental mappings of Ag₆₅-Cu₃₅ JNS-100; (D) FE of major CO₂-reduction products obtained on Ag₆₅-Cu₃₅ JNS-100; (E) Comparison of C₂H₄ FE between Ag₆₅-Cu₃₅ JNS-100 and Cu NCs at different potentials; (F) Comparison of C₂₊/C₁ product ratios between Ag₆₅-Cu₃₅ JNS-100, Ag + Cu mixture and Cu NCs; (G) Schematic illustration of a plausible CO₂RR mechanism on Ag₆₅-Cu₃₅ JNS-100. (Reproduced with permission^[128]. Copyright 2022, Wiley-VCH GmbH); (H) Schematic illustration of the synthesis of Cu needle-Ag catalyst. (Reproduced with permission^[129]. Copyright 2023, Advanced Functional Materials published by Wiley-VCH GmbH); (I) Schematic diagram of the in situ dual-doping process for preparing the x, y-Cu₂O/Cu catalysts. [Reproduced with permission^[131]. Copyright 2022, The Author(s)]; (J) Introduction of Ag into Cu₃N with weaker binding strength with reaction intermediates of CO₂RR could increase local CO coverage and facilitate *CO protonation to *CHO. (Reproduced with permission^[134] . Copyright 2024, American Chemical Society). HAADF-STEM: High-angle annular dark-field scanning transmission electron microscopy; JNS: Janus nanostructure; FE: Faraday efficiency; NCs: Nanocrystals; CO₂RR: Carbon dioxide reduction reaction; EDS: Energy dispersive spectrometer.