Alkyl Ammonium Tungstate Bonded to Fe3O4@SiO2 Nanoparticles; a highly efficient Catalyst for the Oxidation of Symmetrical Sulfides to Symmetrical Sulfoxides

Authors

• Seyed-Mola Khatami * ¹
• Mehdi Khalaj * ²
• Majid Ghashang ³

1. Department of Chemical Industry, Technical and Vocational University (TVU), Tehran, Iran
2. Department of Chemistry, Islamic Azad University, Buinzahra Branch, Buinzahra, Iran
3. Department of Chemistry, Najafabad Branch, Islamic Azad University, P.O. Box: 517; Najafabad, Iran

Abstract

A magnetic organic-inorganic hybrid of Fe₃O₄@SiO₂-functionalized propylpiperazine-1,4-diium tungstate (A) nanoparticles with a spherical structure was prepared and completely characterized by XRD, SEM, TGA-DTA, and FT-IR spectral techniques. The magnetic hybrid was used in the oxidation of symmetrical sulfides to symmetrical sulfoxides under ambient conditions. The excellent yields of sulfoxides, easy operation, and recovery, magnetic properties of the catalyst, and environmentally friendly system are the key advantages of this method.

Highlights

• The excellent yields of sulfoxides
• Easy operation and recovery
• Magnetic properties of the catalyst
• Environmentally friendly system

Graphical Abstract

Keywords

• Oxidation
• Magnetic nanocatalysis
• Organic-inorganic hybrids
• Symmetrical sulfide
• Symmetrical sulfoxide.