Electrochemical conversion of CO2 can be improved using ZIFs-based catalysts with high electric conductivity (Table ). The performance of the electrocatalyst depends on the metal centers of the ZIF materials . The performance can also be enhanced under light using photoactive components in the investigated electrocatalysts . [292] CsPbBr3 quantum dots. Co centers in ZIF-67 accelerated the charge separation process and activated the adsorbed CO2 molecules leading to high catalytic CO2 reduction activity . ZIF-67 was used as a precursor for synthesizing ultrathin holey Co3O4 nanosheets (thickness of 1.8 nm) . The synthesized Co3O4 nanosheets was used as a co-catalyst and support for photosensitizer [Ru(bpy)3]Cl2•6H2O. [Ru(bpy)3]Cl2•6H2O/Co3O4 nanosheets showed CO generation rate and selectivity of 4.52 μmol/h and 70.1%, respectively. Co3O4 nanosheets offered a large specific surface area, high affinity to promote CO2 adsorption, enhanced the separation and transport of charge carriers, and offered several active sites for CO2 photoreduction . The Zn2GeO4/ZIF-8 with 25 wt.% ZIF-8 showed 3.8 times higher CO2 adsorption capacity than the bare Zn2GeO4 nanorods, offering a 62% enhancement in the photocatalytic reduction of CO2 into CH3OH . ZIF-8 prevent photocorrosion of CdS enable good photocatalysis . TiO2/Co-ZIF-90 showed 2.1 times higher CO2 photoreduction than pure TiO2 . ZIF-based catalyst can be combined with Au nanoparticles and assembled into 3D Ni foam (Figure ) . NF@ZnO/Au@ZIF-8 photocatalyst showed 270.02 μmol/g with high selectivity of 89.72%. It exhibited high stability. The main product using ZnO, NF@ZnO, and NF@ZnO@ZIF-8 were CO. While, in the presence of Au, CO is further reduced, forming -CHO, -CH2O, finally leading to the production of CH3OH and CH4. The reduction of Au is due to the high adsorption performance and high surface electron density of gold. Then -CHO gained protons and photogenerated electrons to form -CH2O. Afterward, the -CH2O further obtains protons and photogenerated electrons to form -OCH3. Finally, the -OCH3 reacts with protons and photogenerated electrons to CH4 (Figure ) .