title: Oxide-Nanotrap-Anchored Platinum Nanoparticles with High Activity and Sintering Resistance by Area-Selective Atomic Layer Deposition.
abstract: An area-selective atomic layer deposition (AS-ALD) method is described to construct oxide nanotraps to anchor Pt nanoparticles (NPs) on Al2O3supports. The as-synthesized catalysts have exhibited outstanding room-temperature CO oxidation activity, with a significantly lowered apparent activation energy (ca. 22.17 kJ mol-1) that is half that of pure Pt catalyst with the same loading. Furthermore, the structure shows excellent sintering resistance with the high catalytic activity retention up to 600 °C calcination. The key feature of the oxide nanotraps lies in its ability to anchor Pt NPs via strong metal-oxide interactions while still leaving active metal facets exposed. Our reported method for forming such oxide structure with nanotraps shows great potential for the simultaneous enhancement of thermal stability and activity of precious metal NPs.
authors.affiliation: State Key Laboratory of Digital Manufacturing Equipment and Technology and School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, P.R. China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Digital Manufacturing Equipment and Technology and School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, P.R. China.
authors.forename: Qianqian
authors.initials: Q
authors.lastname: Zhu
authors.affiliation: State Key Laboratory of Materials Processing and Die and Mould Technology and School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, P.R. China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Lang
authors.affiliation: State Key Laboratory of Digital Manufacturing Equipment and Technology and School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, P.R. China.
authors.forename: Kun
authors.initials: K
authors.lastname: Cao
authors.affiliation: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049 (P, .R. China.
authors.forename: Shengqi
authors.initials: S
authors.lastname: Chu
authors.affiliation: State Key Laboratory of Materials Processing and Die and Mould Technology and School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, P.R. China.
authors.forename: Bin
authors.initials: B
authors.lastname: Shan
authors.affiliation: State Key Laboratory of Digital Manufacturing Equipment and Technology and School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, P.R. China.
authors.forename: Rong
authors.initials: R
authors.lastname: Chen
keywords: Co3O4 nanotraps; Pt nanoparticles; area-selective atomic layer deposition; room-temperature CO oxidation; thermal stability