Synthesis, characterization, and catalytic performance of cobalt and nickel-substituted polyoxometalates organic-inorganic nanohybrids
- 1Department of Chemistry, University of Kurdistan
Abstract
Two organic–inorganic hybrids, PDA/[SiW9M3(PDA)3O37], were synthesized through the self-assembly of the [SiW9O34]10− anion and M = Co(II) (1), Ni(II) (2), in the presence of para-phenylenediamine (PDA) as the organic component, and characterized. The structure of the hybrids was investigated by means of FT-IR spectroscopy, X-ray diffraction analysis (XRD), field emission scanning electron (FE-SEM), energy-dispersive X-ray spectroscopy (EDX) and N2 adsorption-desorption studies. To further investigate structural connectivity, the composites 1a and 2a were obtained by calcining 1 and 2 at 400 °C and studied. A comparison of nitrogen adsorption/desorption studies of 2a and 2 showed that the BET surface area and pore texture were improved by calcination. Catalytic activity studies showed that the as-synthesized organic–inorganic hybrids efficiently catalyzed the synthesis of various 1 H-5-substituted tetrazole derivatives in good to excellent yields (40–98%) under mild conditions. The catalysts were reused for up to five consecutive cycles with only a slight decrease in catalytic activity under the tested conditions. These results demonstrate that the prepared catalytic system can serve as a useful heterogeneous catalyst for tetrazole synthesis.
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BibTeX
@article{gharaei2026synthesis,
title = {{Synthesis, characterization, and catalytic performance of cobalt and nickel-substituted polyoxometalates organic-inorganic nanohybrids}},
author = {Parastou Gharaei and Sahar Mohammadzadeh and Roushan Khoshnavazi and Somayeh Molaei},
journal = {Scientific Reports},
year = {2026},
month = jul,
doi = {10.1038/s41598-026-61525-3},
url = {https://doi.org/10.1038/s41598-026-61525-3},
note = {CC BY},
}
RIS
TY - JOUR
TI - Synthesis, characterization, and catalytic performance of cobalt and nickel-substituted polyoxometalates organic-inorganic nanohybrids
AU - Parastou Gharaei
AU - Sahar Mohammadzadeh
AU - Roushan Khoshnavazi
AU - Somayeh Molaei
PY - 2026
DA - 2026/07/01
JO - Scientific Reports
DO - 10.1038/s41598-026-61525-3
UR - https://doi.org/10.1038/s41598-026-61525-3
AB - Two organic–inorganic hybrids, PDA/[SiW9M3(PDA)3O37], were synthesized through the self-assembly of the [SiW9O34]10− anion and M = Co(II) (1), Ni(II) (2), in the presence of para-phenylenediamine (PDA) as the organic component, and characterized. The structure of the hybrids was investigated by means of FT-IR spectroscopy, X-ray diffraction analysis (XRD), field emission scanning electron (FE-SEM), energy-dispersive X-ray spectroscopy (EDX) and N2 adsorption-desorption studies. To further investigate structural connectivity, the composites 1a and 2a were obtained by calcining 1 and 2 at 400 °C and studied. A comparison of nitrogen adsorption/desorption studies of 2a and 2 showed that the BET surface area and pore texture were improved by calcination. Catalytic activity studies showed that the as-synthesized organic–inorganic hybrids efficiently catalyzed the synthesis of various 1 H-5-substituted tetrazole derivatives in good to excellent yields (40–98%) under mild conditions. The catalysts were reused for up to five consecutive cycles with only a slight decrease in catalytic activity under the tested conditions. These results demonstrate that the prepared catalytic system can serve as a useful heterogeneous catalyst for tetrazole synthesis.
SN - 2045-2322
ER -