Water oxidation electrocatalysis with iron oxide nanoparticles prepared via laser ablation

Erica Pizzolato, Stefano Scaramuzza, Francesco Carraro, Alessia Sartori, Stefano Agnoli, Vincenzo Amendola*, Marcella Bonchio, Andrea Sartorel

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Iron oxide nanoparticles (FeOx NPs, 5-30 nm size) prepared via laser ablation in liquid were supported onto Indium Tin Oxide conductive glass slides by magnetophoretic deposition (MD) technique. The resulting FeOx@ITO electrodes are characterized by a low amount of iron coverage of 16-50 nmol/cm2, and show electrocatalytic activity towards water oxidation in neutral phosphate buffer pH 7 with 0.58 V overpotential and quantitative Faradaic efficiency towards oxygen production. XPS analysis on the oxygen region of the FeOx films reveals a substantial hydration of the surface after catalysis, recognized as a crucial step to access reactivity.

Original languageEnglish
Pages (from-to)246-250
Number of pages5
JournalJournal of Energy Chemistry
Volume25
Issue number2
DOIs
Publication statusPublished - 1 Mar 2016
Externally publishedYes

Keywords

  • Electrocatalysis
  • Iron oxide
  • Laser ablation
  • Nanoparticles
  • Water oxidation

ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Electrochemistry

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