Synthesis and investigation of two new crystalline organic inorganic nano-hybrids based on wells-dawson vanadotungstates and 1h-1, 2, 4-triazole as electro- and photocatalysts - Université de Lille Accéder directement au contenu
Article Dans Une Revue Journal of Molecular Structure Année : 2021

Synthesis and investigation of two new crystalline organic inorganic nano-hybrids based on wells-dawson vanadotungstates and 1h-1, 2, 4-triazole as electro- and photocatalysts

Fatemeh Hajizadeh
  • Fonction : Auteur
Farrokhzad Mohammadi Zonoz
  • Fonction : Auteur
Behrooz Maleki
  • Fonction : Auteur
Amirhassan Amiri
  • Fonction : Auteur

Résumé

Two new Wells–Dawson polyoxometalate-based organic-inorganic hybrid materials, namely, {[O]2.75[trz]7[α2-P2W17VO62]•12H2O}2(1) and {[O]11.5[trz]7[α2-P2W14.4V3.6O62]}2(2) (trz=1-H-1,2,4-triazole) were synthesized under mildconditions, and characterized by FT-IR, 1H NMR and 31P NMR spectroscopy, powder X-ray diffraction, TGA, field emission SEM and cyclic voltammetry. These hybrids constructed from trz ligand and Wells–Dawson polyoxoanions, in which trzis connected to a mono-vanadium substituted [α2-P2W17VO62]7− in 1 and a hexa-vanadium substituted [P2W12V6O62]12−in 2 by hydrogen bonding interactions. The structures of 1 and 2 were determined by single-crystal X-ray diffraction. Electrocatalytical activities of compounds 1 and 2 in the form of modified carbon paste electrode (MCPE) towards the reduction of nitrite ion have been studied in different pH values at acidic buffer solutions. Compounds 1-MCPE and 2-MCPE exhibit good electrocatalytical activity for reduction of NO2−. Also, the photocatalytical properties of the compounds 1 and 2 for the degradation of methylene blue have been studied.
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Dates et versions

hal-04442536 , version 1 (06-02-2024)

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Fatemeh Hajizadeh, Farrokhzad Mohammadi Zonoz, Sylvain Duval, Behrooz Maleki, Amirhassan Amiri. Synthesis and investigation of two new crystalline organic inorganic nano-hybrids based on wells-dawson vanadotungstates and 1h-1, 2, 4-triazole as electro- and photocatalysts. Journal of Molecular Structure, 2021, Journal of Molecular Structure, 1224, ⟨10.1016/j.molstruc.2020.129003⟩. ⟨hal-04442536⟩
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