fig18

Figure 18. (A) FT-EXAFS fitting and structural model of CA/Ni₁Cu_NP N-C; (B) Photocatalytic CO₂RR product efficiency of CH₄, CO, and C₂H₆ with different percentage of Ni₁Cu_NP N-C; (C) Diagram of photocatalytic CO₂RR mechanism over Ni₁Cu_NP N-C; (A-C) are quoted with permission from Pan et al.^[278]; (D) AC-HADDF-STEM image of CoN_X/TiO₂; (E and F) CO/CH₄ yields (E) and the corresponding TCEN (F) of CoN_X/TiO₂ and other reference samples; (D-F) are quoted with permission from Zeng et al.^[279]; (G) Normalized XANES spectra of the Cu K-edge for Cu SAs/UiO-66-NH₂ and other samples; (H and I) CH₃OH/CH₃CH₂OH yields (H) and comparative rates of formation (I) by Cu SAs/UiO-66-NH₂; (G-I) are quoted with permission from Wang et al.^[280]. FT: Fourier transform; EXAFS: extended X-ray absorption fine structure; CO₂RR: CO₂ reduction reaction; XANES: X-ray absorption near-edge structure; TCEN: total carbon-based product.