Abstract
Metal oxide supported metal catalysts show promising catalytic performance in many industry-relevant reactions. However, the enhancement of performance is often limited by the insufficient metal/metal oxide interface. In this work, we demonstrate a general synthesis of Pt-early transition metal oxide (Pt-MOx, M = Ti, Zr, V, and Y) catalysts with rich interfacial sites, which is based on the air-induced surface segregation and oxidation of M in the supported Pt-M alloy catalysts. Systematic characterizations verify the dynamic structural response of Pt-M alloy catalysts to air and the formation of Pt-MOx catalysts with abundant interfacial sites. The prepared Pt-TiOx interfacial catalysts exhibit improved performance in hydrogenation reactions of benzaldehyde, nitrobenzene, styrene, and furfural, as a result of the heterolytic dissociation of H2 at Pt-metal oxide interfacial sites.
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Acknowledgements
We acknowledge the funding support from the National Natural Science Foundation of China (Nos. 22221003 and 22071225), the Plan for Anhui Major Provincial Science & Technology Project (Nos. 202203a0520013 and 2021d05050006), and the fellowship of China Postdoctoral Science Foundation (No. 2022M712179).
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Xu, SL., Nan, H., Zhang, W. et al. Alloy strategy to synthesize Pt-early transition metal oxide interfacial catalysts. Nano Res. 17, 3390–3397 (2024). https://doi.org/10.1007/s12274-023-6218-5
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DOI: https://doi.org/10.1007/s12274-023-6218-5