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. 2017 Nov 10;8:1407. doi: 10.1038/s41467-017-01673-3

Fig. 4.

Fig. 4

Free energy diagram for CO2 hydrogenation over the Au/SiO2-Schiff catalyst. The geometry with a close-packed Au55 sub-nanocluster (~1.2 nm) accommodated with an alkyl-imine Schiff base under the COSMO solvent effect of water was used to model the real Au/SiO2-Schiff catalyst in water. Energy profile was constructed based on the DFT calculation analysis of each elementary step