Design of Pd-Graphene-Au Nanorod Nanocomposite Catalyst for Boosting Suzuki-Miyaura Coupling Reaction by Assistance of Surface Plasmon Resonance

Takeharu Yoshii, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Visible-light boosting chemical reactions by surface plasmon resonance (SPR) have recently received much attention in photocatalysis. Although multiple types of plasmonic catalysts have been developed, the efficient utilization of SPR-induced hot-electrons remains to be a challenging task due to their ultrafast decay. In this study, structure-controlled Pd-graphene-Au nanorod nanocomposite catalysts are fabricated for maximizing hot-electron utilization in SPR-enhanced reactions. The characterization confirmed that highly dispersed Pd clusters were deposited on a homogeneous reduced graphene oxide (rGO) layer-coated Au nanorods. The catalytic activity in the Suzuki-Miyaura coupling reaction was highly enhanced under visible-light irradiation due to the SPR of the Au nanorods, whose performance was superior to that without an rGO layer. Further experimental and calculation study demonstrated that the electro-conductive rGO layer plays a crucial role as an electron mediator for promoting hot-electron transportation from Au to Pd, which resulted in the reaction acceleration.

Original languageEnglish
Pages (from-to)24575-24583
Number of pages9
JournalJournal of Physical Chemistry C
Volume123
Issue number40
DOIs
Publication statusPublished - 2019 Oct 10
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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