A recyclable Ag Supported on Hydroxyapatite–Core–Shell Magnetic γ-Fe2O3 Nanoparticles (γ-Fe2O3@HAp-Ag NPs): an Environmentally Benign and Magnetically Catalyst for the Oxidation of Sulfides to Sulfoxides

  • Saeedeh Hadikhani
  • Marzieh Rekavandi
  • Seyedeh Maryam Hosseinikhah
  • Rahimeh Hajinasiri
  • Sobhan Rezayati
Research Paper


Silver supported on hydroxyapatite-core–shell magnetic γ-Fe2O3 nanoparticles (γ-Fe2O3@HAp-Ag NPs) as a new, heterogeneous, and magnetically reusable nanocatalyst has been prepared under mild conditions and characterized by FT-IR, TEM, SEM, VSM, and XRD analysis. Then, γ-Fe2O3@HAp-Ag NPs was used for the oxidation of sulfides to sulfoxides with 33% aqueous H2O2 (0.5 ml) as an oxidant under solvent-free conditions at room temperature in good to excellent yields and short reaction time. Short reaction time and high yields of the desired products, non-toxicity of reagent, high catalytic activity, ecofriendly reaction conditions, operational simplicity, and ease of recovery from the reaction mixture using an external magnet are the advantages of the present method.


γ-Fe2O3@HAp-Ag NPs Magnetic nanoparticles Oxidation Hydrogen peroxide Lewis acid 



We gratefully acknowledge funding from national elites foundation of Iran for this research. We also acknowledge Dr. Rahimeh Hajinasiri for his valuable work in correcting this manuscript.


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Copyright information

© Shiraz University 2017

Authors and Affiliations

  • Saeedeh Hadikhani
    • 1
  • Marzieh Rekavandi
    • 2
  • Seyedeh Maryam Hosseinikhah
    • 3
  • Rahimeh Hajinasiri
    • 2
  • Sobhan Rezayati
    • 2
  1. 1.Department of ChemistryAhvaz Branch, Islamic Azad UniversityAhvazIran
  2. 2.Chemistry DepartmentQaemshahr Branch, Islamic Azad UniversityQaemshahrIran
  3. 3.School of ChemistryDamghan UniversityDamghanIran

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