Plasmonic Photoelectrocatalysis in Copper-Platinum Core-Shell Nanoparticle Lattices

Shikai Deng, Bowei Zhang, Priscilla Choo, Paul J.M. Smeets, Teri W. Odom

Research output: Contribution to journalArticlepeer-review

Abstract

This paper reports that strongly coupled bimetallic core-shell nanoparticle arrays show photoelectrocatalytic activity for hydrogen evolution reactions (HER). We fabricated large-area Cu-Pt nanoparticle lattices by combining top-down lithography and solution-based chemistry. These coupled lattices support two different types of plasmon modes, localized surface plasmons from individual particles and surface lattice resonances (SLRs) from the 2D lattice, that increased HER catalytic activity under white-light illumination up to 60%. Comparing photoelectrocatalytic performances of the two plasmon modes at different wavelength ranges, we found that SLRs had two-fold activity enhancement over that from localized surface plasmons.

Original languageEnglish
JournalNano letters
DOIs
Publication statusAccepted/In press - 2021

Keywords

  • Surface lattice resonance
  • bimetallic core-shell nanoparticle
  • hydrogen evolution reaction
  • index mismatch
  • lattice plasmon
  • solar energy conversion
  • water splitting

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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