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Abstract <p>Catalytically active coatings on titanium are synthesized via plasma electrolytic oxidation (PEO) in aqueous electrolytes containing sodium phosphate and tungstate, in addition to iron chelate complexes with EDTA. Analysis of EDX, XPS, and XRD data show the PEO coatings contained titanium dioxide and amorphous tungstates and/or phosphates of iron. High concentrations of phosphorus (up to 6 at %) promote amorphization. Testing the PEO catalysts reveals their activity in the oxidative desulfurization (ODS) of thiophene and dibenzothiophene with hydrogen peroxide and atmospheric oxygen.</p>

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Catalysts of Peroxide and Aerobic Desulfurization, Based on Hybrid Plasma Electrolytic Oxidized Layers with Phosphorous, Tungsten, and Iron Oxides

  • 期刊论文

  • 发表日期：

    2025年8月3日

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  • I. G. Tarkhanova,
  • I. V. Lukiyanchuk,
  • E. A. Yeseva,
  • M. S. Vasilyeva,
  • M. O. Lukashov,
  • V. V. Korochentsev,
  • V. V. Tkachev

摘要

Abstract

Catalytically active coatings on titanium are synthesized via plasma electrolytic oxidation (PEO) in aqueous electrolytes containing sodium phosphate and tungstate, in addition to iron chelate complexes with EDTA. Analysis of EDX, XPS, and XRD data show the PEO coatings contained titanium dioxide and amorphous tungstates and/or phosphates of iron. High concentrations of phosphorus (up to 6 at %) promote amorphization. Testing the PEO catalysts reveals their activity in the oxidative desulfurization (ODS) of thiophene and dibenzothiophene with hydrogen peroxide and atmospheric oxygen.