A highly dispersible, magnetically separable and environmentally friendly nano-sized catalyst for water oxidation

Mohammad Mahdi Najafpour, Saeideh Salimi, Małgorzata Hołyńska, Suleyman Allakhverdiev

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The reaction of KMnO4 with cobalt nanoparticles coated with SiO2 layers forms a highly dispersible, magnetically separable and environmentally friendly catalyst toward water oxidation. The compound was characterized by scanning electron microscopy, energy-dispersive spectroscopy, transmission electron microscopy, X-ray Photoelectron Spectroscopy, X-ray diffraction, electron spectroscopy, Fourier transform infrared spectroscopy and atomic absorption spectroscopy. The nano-sized catalyst shows self-healing in the presence of cerium(IV) ammonium nitrate and under the water-oxidation conditions. The turnover frequencies for the catalyst toward water oxidation in the presence of cerium(IV) ammonium nitrate and [Ru(bpy)3]3+ are 0.15 and 0.25 (mmol O2/mol Mn·s), respectively.

Original languageEnglish
Pages (from-to)4616-4623
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume41
Issue number8
DOIs
Publication statusPublished - Mar 2 2016
Externally publishedYes

Keywords

  • Artificial photosynthesis
  • Heterogeneous catalyst
  • Manganese oxide
  • Water oxidation

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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