Novel solid-state synthesis of surfactant- and solvent-free Pd tetrahedron nanocatalysts

Kyung Hee Oh, Kwangsoo Kim, Jin Gyu Lee, Nahyun Park, Hack Keun Lee, Shin Wook Kang, Jung Il Yang, Byeong Seon An, Kang Hyun Park, Chang Seop Hong, Byung Hyun Kim, Ji Chan Park

Research output: Contribution to journalArticlepeer-review

Abstract

Shape-controlled palladium nanocatalysts with high activity in various catalytic reactions have attracted much attention. However, the reliable synthesis of shape-controlled Pd nanocatalysts in the absence of polymeric surfactants and harmful organic solvents remains a challenging issue. This study is the first to report an automated, reproducible, and reliable solid-state synthesis of surfactant-free tetrahedral-shaped Pd nanocatalysts with high particle dispersion. By using carbon monoxide gas as a capping material for the Pd precursor during synthesis, the morphology of the Pd nanoparticles could be controlled, as revealed by computer simulations. The tetrahedral Pd nanoparticles synthesized on graphene supports exhibited higher catalytic performance for the reduction of 4-nitrophenol than those of spherical Pd nanoparticles on graphene, commercial Pd/C, and PVP stabilized Pd nanocubes on graphene due to their active edge and kink sites with high dispersion and the clean active site surface. In addition, the additional incorporation of magnetic Fe3O4 nanoparticles into the tetrahedral Pd nanoparticle-supported nanocatalysts facilitated the separation of the catalysts by magnetism, making reuse convenient.

Original languageEnglish
Pages (from-to)1233-1242
Number of pages10
JournalJournal of Materials Chemistry A
Volume12
Issue number2
DOIs
Publication statusPublished - 2023 Dec 7

Bibliographical note

Publisher Copyright:
© 2024 The Royal Society of Chemistry.

ASJC Scopus subject areas

  • General Chemistry
  • Renewable Energy, Sustainability and the Environment
  • General Materials Science

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