Electrocatalysis by Polyoxometalate-Protected Gold Nanoparticles

Mingfu Zhang, Ira A. Weinstock, Yifeng Wang

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Electrocatalysis by polyoxometalate (POM)-monolayer protected gold nanoparticles is herein demonstrated using a newly discovered phenomenon that makes it possible to observe the electrochemistry of dilute aqueous solutions of these colloidal nanostructures. To preserve the integrity of the gold nanoparticles' electrostatically-stabilized POM-monolayer structures, deposition and drying of the POM-protected metal(0) NPs on the electrode surface must be avoided. Overcoming this constraint, we here show that POM-monolayer protected gold nanoparticles can be induced to reversibly associate with electrode surfaces, resulting in dramatic current amplification and well behaved, quasi-reversible cyclic voltammetric behavior at remarkably small electrolyte concentrations, thus making it possible to investigate electrocatalysis by dilute aqueous solutions of POM-protected gold NPs.

Original languageEnglish
Pages (from-to)771-779
Number of pages9
JournalJournal of Cluster Science
Volume25
Issue number3
DOIs
StatePublished - 1 Jan 2014

Keywords

  • Electrochemistry
  • Gold nanoparticle
  • Monolayer
  • Polyoxometalate
  • Self-assembly

ASJC Scopus subject areas

  • Biochemistry
  • Chemistry (all)
  • Materials Science (all)
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Electrocatalysis by Polyoxometalate-Protected Gold Nanoparticles'. Together they form a unique fingerprint.

Cite this