Efficient oxidation of sulfides to sulfoxides catalyzed by heterogeneous Zr-containing polyoxometalate grafted on graphene oxide.

Autor: Yekke-Ghasemi Z; Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Tehran, Iran., Heravi MM; Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Tehran, Iran. mmheravi@alzahra.ac.ir., Malmir M; Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Tehran, Iran., Mirzaei M; Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, 9177948974, Iran. mirzaeesh@um.ac.ir.; Khorasan Science and Technology Park (KSTP), 12Th Km of Mashhad-Quchan Road, MashhadKhorasan Razavi, 9185173911, Iran. mirzaeesh@um.ac.ir.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2023 Oct 05; Vol. 13 (1), pp. 16752. Date of Electronic Publication: 2023 Oct 05.
DOI: 10.1038/s41598-023-43985-z
Abstrakt: In this study, a tri-component composite named Zr/SiW 12 /GO was meticulously prepared through an ultrasonic-assisted method. This composite incorporates zirconium nanoparticles (Lewis acid), a negatively charged Keggin type polyoxometalate, and graphene oxide, and serves as a remarkable heterogeneous catalyst. The Keggin component plays multiple roles as reducing, encapsulating, and bridging agents, resulting in a cooperative effect among the three components that significantly enhances the catalytic activity. The catalytic performance of Zr/SiW 12 /GO was thoroughly investigated in the oxidation of sulfides to sulfoxides under mild conditions, employing H 2 O 2 as the oxidant. Remarkably, this composite exhibited exceptional stability and could be effortlessly recovered and reused up to four times without any noticeable loss in its catalytic activity.
(© 2023. Springer Nature Limited.)
Databáze: MEDLINE
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