Ag@CeO2 nanoparticles with 'rice ball' configuration as an efficient and heterogeneous nanocatalyst for the selective oxidation of sulfides to sulfones with 30% H2O2

Autor:	Ebrahim Soleimani, Rouhallah Parnian, Somayeh Ghorbani, Kiumars Bahrami
Rok vydání:	2020
Předmět:	Reaction conditions 010405 organic chemistry Chemistry Ag nanoparticles General Chemistry 010402 general chemistry Photochemistry 01 natural sciences Oxygen vacancy 0104 chemical sciences Catalysis Ceo2 nanoparticles Efficient catalyst Selectivity
Zdroj:	Monatshefte für Chemie - Chemical Monthly. 151:1419-1424
ISSN:	1434-4475 0026-9247
DOI:	10.1007/s00706-020-02668-5
Popis:	Ag@CeO2 with a rice-ball configuration as a heterogeneous and highly efficient catalyst was described for activation of H2O2 in the selective oxidation of aromatic and aliphatic sulfides to their corresponding sulfones. Ag nanoparticles in the CeO2–Ag interface increase the oxygen vacancy defects on the surface of CeO2 and oxygen vacancy defects promote the reduction of Ce4+ to Ce3+ to keep the electroneutrality. Generated Ce3+ species act as the active sites in the interface of CeO2–Ag to promote the oxidation of sulfides to sulfones. Compatibility with various aromatic and aliphatic sulfides, excellent selectivity, high yield of product, simple experimental procedure, and mild reaction conditions are some of the precious advantages of Ag@CeO2/H2O2 catalyst system.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::255a501b206bebf219614f916b01873c https://doi.org/10.1007/s00706-020-02668-5 Zobrazit plný text záznamu Full text from SpringerLink