• SOMAYEH ZOLFAGHARINIA

      Articles written in Journal of Chemical Sciences

    • Nano-sized glass as an economically viable and eco-benign support to anchor heteropolyacids for green and sustainable chemoselective oxidation of sulfides to sulfoxides

      SOMAYEH ZOLFAGHARINIA ESKANDAR KOLVARI NADIYA KOUKABI MALIHEH M HOSSEINI

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      In this work, glass wastes were employed as cost-effective supports for the immobilization of phosphomolybdic acid (5–25 wt.% PMA) through an impregnation method. The highly efficient and retrievable nanocatalyst named nano-glass waste-supported phosphomolybdic acid (n-GW/PMA) was fully characterized by several techniques such as: XRD, FE-SEM, EDX, FT-IR and TGA. The catalytic performance of the assynthesized heterogeneous nanocatalystwas effectively investigated for the chemoselective oxidation of sulfides to sulfoxides in the presence of 30% H₂O₂ as an oxidant at room temperature under solvent-free condition. Optimization of the reaction conditions was performed by means of central composite design (CCD), which isone of the powerful response surface methodologies. Based on the results obtained under the optimum condition, the sample of 16 wt.% of PMA loading offered high conversion rates and yields (97%). Besides, the beneficialpoints of the prepared catalyst were its recoverability and reusability for several reaction cycles, low-cost and toxicity, easy availability and facile production.

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