Fig. 4: Gibbs free energy pathway for the formation of HCO* and CO from CO2 over Ru/Mn3O4 (321), Ru/Mn3O4-x (321), and Ru/MnO (200).
From: Photo-thermal coupling to enhance CO2 hydrogenation toward CH4 over Ru/MnO/Mn3O4
The blue, red, purple, yellow, and green spheres represent the Mn, O, Ru, C, and H atoms, respectively, in the calculation model.
