Strong metal-support interactions induced by an ultrafast laser

Jian Zhang, Dezhi Zhu, Jianfeng Yan () and Chang-An Wang ()
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Jian Zhang: Tsinghua University
Dezhi Zhu: Tsinghua University
Jianfeng Yan: Tsinghua University
Chang-An Wang: Tsinghua University

Nature Communications, 2021, vol. 12, issue 1, 1-10

Abstract: Abstract Supported metal catalysts play a crucial role in the modern industry. Constructing strong metal-support interactions (SMSI) is an effective means of regulating the interfacial properties of noble metal-based supported catalysts. Here, we propose a new strategy of ultrafast laser-induced SMSI that can be constructed on a CeO2-supported Pt system by confining electric field in localized interface. The nanoconfined field essentially boosts the formation of surface defects and metastable CeOx migration. The SMSI is evidenced by covering Pt nanoparticles with the CeOx thin overlayer and suppression of CO adsorption. The overlayer is permeable to the reactant molecules. Owing to the SMSI, the resulting Pt/CeO2 catalyst exhibits enhanced activity and stability for CO oxidation. This strategy of constructing SMSI can be extended not only to other noble metal systems (such as Au/TiO2, Pd/TiO2, and Pt/TiO2) but also on non-reducible oxide supports (such as Pt/Al2O3, Au/MgO, and Pt/SiO2), providing a universal way to engineer and develop high-performance supported noble metal catalysts.

Date: 2021
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DOI: 10.1038/s41467-021-27000-5

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