fig7

Figure 7. (A) Design strategy for exsolution-facilitated perovskite-exsolved NPs based on SFNM with pure DP phase, pure LP phase, and DLP scaffolds. (In the schematic models, the red area is the DP structure, the blue area is the LP structure, and the light green area is the Fe-Ni NPs. Purple spheres in 2D models are Sr atoms, pink spheres are Fe/Ni/Mo atoms, gray spheres are oxygen atoms, and green spheres are exsolved Fe-Ni alloy NPs); (B) Changes in phase structure cause a shift in the activity and stability of perovskite oxides; (C) DFT calculation of carbon dioxide adsorption configurations and adsorption energies on the surface of DP-V_o, LP-V_o, DP-V_o-F2N3, DP-V_o-F3N1, LP-V_o-F2N3, LP-V_o-F3N2 models, in the above models, the grey balls are Sr atoms, the red balls are Fe atoms, the dark blue balls are Ni atoms, the pink balls are Mo atoms, and the light blue balls are O atoms. Reproduced with permission^[125], Copyright 2023, Wiley-VCH. NPs: Nanoparticles; SFNM: Sr₂Fe_1.3Ni_0.2Mo_0.5O₆; DP: double perovskite; LP: layered perovskite; DLP: double perovskite and layered perovskite; DFT: density functional theory.