Fig. 4: Structural analysis of the ML-identified RWGS catalyst. | Nature Communications

Fig. 4: Structural analysis of the ML-identified RWGS catalyst.

From: Accelerated discovery of multi-elemental reverse water-gas shift catalysts using extrapolative machine learning approach

Fig. 4

A HAADF-STEM images of TiO2, Rb(1)-Ba(1)-Mo(0.6)-Nb(0.2)/TiO2, and Pt(3)/Rb(1)-Ba(1)-Mo(0.6)-Nb(0.2)/TiO2. B Mo K-edge XANES of unreduced and reduced Pt(3)/Rb(1)-Ba(1)-Mo(0.6)-Nb(0.2)/TiO2 and reference compounds. C XPS spectra of the supported Pt catalysts after the H2 reduction pretreatment at 300 °C without exposure to air. D IR spectra of CO adsorbed on the supported Pt catalysts, recorded at 250 °C after the H2 reduction pretreatment at 300 °C. The sample was exposed to a flow of 1% CO/He (100 mL min−1) for 5 min and purged with He for 5 min.

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