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The microporous, sodalite-like zeolite imidazolate framework ZIF-8 [Zn(MeIM); MeIM = 2-methylimidazole] has been selected as a host matrix for stabilization of guest H 3 PW 12 O 40  (PW 12 ) in this study. To modify ZIF-8 by H 3 PW 12 O 40  (PW 12 ), a one-pot hydrothermal synthesis strategy has been developed and used in the chemoselective oxidation of sulfides to the corresponding sulfoxides (and sulfones) in the presence of 30 % H 2 O 2  in ethanol (and CH 3 CN) as solvent. Some of the advantages of our method include excellent yields, heterogeneous conditions, simplicity, compatibility with a variety of functionalities, and ease of isolation of the products. X-ray diffraction, scanning electron microscopy, energy-dispersive analysis X-ray spectroscopy, ultraviolet/visible rays, and Brunauer–Emmett–Teller have been used to characterize the samples prepared. Large-sized pores and cavities of ZIF-8 become occupied by PW 12  units on modification with PW 12 , as shown by analysis results. This method might bring light to new opportunities in the development of high-performance polyoxometalate catalysts using rapidly growing ZIFs as supports.

zeitschrift für naturforschung b

One-pot hydrothermal synthesis of H 3 PW 12 O 40  supported on zeolite imidazolate frameworks (ZIF-8): a highly efficient heterogeneous catalyst for oxidation of sulfides to sulfoxides and sulfones