Real-time plasmonic monitoring of electrocatalysis on single nanorods

Research output: Contribution to journalArticle

Authors

  • Jun-gang Wang
  • Meng Li
  • Da-wei Li
  • Wei Ma
  • Yi-lun Ying
  • Ruo-can Qian
  • Chan Cao
  • Yi-tao Long

Colleges, School and Institutes

Abstract

Changes in the optical properties of single gold nanorods during electrocatalytic oxidation of glucose in alkaline media are monitored in real-time by single-nanoparticle dark-field spectroelectrochemistry. The spectral scattering characteristics under dynamic potential scan conditions are closely related to the electrochemical processes, and the electrochemical catalytic mechanism of the process is discussed. Moreover, changes in free-electron density are evaluated using a Drude dielectric function with charge density-modification. The proposed sensing technique based on plasmonic analysis shows significant promise for the design and research of electrochemical catalytic systems at the single-nanoparticle level.

Details

Original languageEnglish
Pages (from-to)257-264
JournalJournal of Electroanalytical Chemistry
Volume781
Early online date8 Oct 2016
Publication statusPublished - 15 Nov 2016

Keywords

  • Local chemical reaction, Localized surface plasmon resonance, Spectroelectrochemistry, Single nanoparticle