ZnFe2O4@SiO2@L-lysine@SO3H: preparation, characterization, and its catalytic applications in the oxidation of sulfides and synthesis of Bis(pyrazolyl)methanes

Amir Ghanbarpour; Arash Ghorbani-Choghamarani; Hamid Aghavandi; Ahmad Jafari

doi:10.1038/s41598-024-57317-2

ZnFe₂O₄@SiO₂@L-lysine@SO₃H: preparation, characterization, and its catalytic applications in the oxidation of sulfides and synthesis of Bis(pyrazolyl)methanes

Sci Rep. 2024 Mar 28;14(1):7449. doi: 10.1038/s41598-024-57317-2.

Authors

Amir Ghanbarpour¹, Arash Ghorbani-Choghamarani², Hamid Aghavandi¹, Ahmad Jafari¹

Affiliations

¹ Department of Organic Chemistry, Faculty of Chemistry and Petroleum Sciences, Bu-Ali Sina University, Hamedan, 6517838683, Iran.
² Department of Organic Chemistry, Faculty of Chemistry and Petroleum Sciences, Bu-Ali Sina University, Hamedan, 6517838683, Iran. a.ghorbani@basu.ac.ir.

Abstract

Herein, we report the synthesis of ZnFe₂O₄@SiO₂@L-lysine@SO₃H as a green, novel magnetic nanocatalyst, containing the sulfuric acid catalytic sites on the surface of zinc ferrite as the catalytic support. The physical and chemical properties of raw and modified samples (ZnFe₂O₄@SiO₂@L-lysine@SO₃H) were characterized by TGA, EDX, PXRD, Map, and FTIR analyses. The prepared nanocatalyst has excellent catalytic activity in synthesizing the oxidation of sulfides to the sulfoxides and Synthesis of pyrazolyl (Bis(pyrazolyl)methane) derivatives under green conditions. This designed nanocatalyst offers several advantages including the use of inexpensive materials and high yield, simple procedure, and commercially available. The synthesized mesoporous nanocatalyst was recovered and reused in five continuous cycles without considerable change in its catalytic activity.

Keywords: Catalyst; L-lysine; Pyrazolyl; SO3H; Sulfoxide; ZnFe2O4.