Fig. 21. (a) Schematic diagram exhibiting proposed reaction mechanisms for the photoreduction of CO2 on Ag–TiO2/GO, Pd–TiO2/GO, and Cu–TiO2/GO.141 Copyright 2021, Royal Society of Chemistry. (b) C2 product yield rates, evolutions over time and catalytic stabilities of pristine meso-Co3O4, mr-meso-Co3O4, and meso-Co3O4@CoO. (c) Pathway on surfacereduced meso-Co3O4.142 Copyright 2023, American Chemical Society. (d) The proposed reaction mechanism for the photocatalytic CO2 reduction conversion to CH3CHO.143 Copyright 2022, Royal Society of Chemistry.
