4.8 Article

A top-down strategy to realize the synthesis of small-sized L10-platinum-based intermetallic compounds for selective hydrogenation

Journal

NANO RESEARCH
Volume 15, Issue 10, Pages 9631-9638

Publisher

TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-022-4530-0

Keywords

top-down strategy; Pt-based; intermetallic compound; small-sized; selective hydrogenation

Funding

  1. National Key Research and Development (R&D) Program of China [2020YFB1505802]
  2. Ministry of Science and Technology of China [2017YFA0208200]
  3. National Natural Science Foundation of China [22025108, U21A20327, 22121001, 51802206]
  4. Guangdong Provincial Natural Science Fund for Distinguished Young Scholars [2021B1515020081]
  5. Guangzhou Key Laboratory of Low Dimensional Materials and Energy Storage Devices [20195010002]
  6. Xiamen University

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In this work, a facile top-down strategy was demonstrated to fabricate Pt-based nanoparticles with ultrasmall feature and tailored structure. The thermal treatment of Cd evaporation under high temperature enables the creation of highly stable intermetallic compounds with different compositions, which display excellent catalytic performance.
The synthesis of Pt-based nanoparticles (NPs) with ultrasmall feature and tailored structure is of great importance for catalysis yet challenging. In this work, we demonstrate a facile top-down strategy for the fabrication of small-sized Pt-based intermetallic compounds (IMCs) with L1(0) structure through the evaporation of Cd under high temperature. Impressively, such thermal treatment can be used as a versatile strategy for creating binary, ternary, quaternary, quinary, and senary L1(0)-Pt-based IMCs. Moreover, the small-sized Pt-based IMCs display high stability against high temperature of 700 degrees C, which can serve as active and selective catalyst for the selective hydrogenation of 4-nitrophenylacetylene. This work may not only provide a versatile top-down strategy for fabricating highly stable small-sized Pt-based NPs with L1(0) structure, but also promote their extensive applications in catalysis and beyond.

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