Dual-atom catalysts, which exhibit high activity and atom utilization, show promise for sustainable energy conversion and storage technologies. However, the rational design and synthesis of a dual-atom catalyst with structurally homogeneous and flexible active sites remains challenging. Researchers developed a strategy for the synthesis of a carbon-based catalyst with diatomic Fe–Co sites in which the Fe and Co atoms are coordinated to N and O atoms, respectively, and linked through bridging N and O atoms. VtC-XES clearly identified the coordination and orbital hybrids of Fe-O, Fe-N / Co-O, and Co-N (Figure1 d and e). Accordingly, researchers determined the structure of the FeCo-N3O3@C quaternary dimer catalyst. Nature Synthesis 2024, 3, 878–890
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