Abstract
An alcohol solvated polyoxometalate, [NH4]4[SiW12O40]·3C2H5OH (1), has been synthesized and characterized by infrared spectrum, single-crystal X-ray diffraction and elemental analysis. The X-ray crystallographic study of 1 showed that it was crystallized in trigonal space group R-3m and polyanions was associated with the NH4+ counterions by coulombic forces and supramolecular interactions. Complex 1 was further connected and formed a three-dimensional framework through alcohol (OH⋯OPOM) and other weak interactions (NH⋯OPOM and OH⋯NNH4+). From three types of NH4+, only N1 showed hydrogen bonding. The redox waves of W-O framework of 1 was pH-dependent. The tungsten-centered waves of this compound showed a classical potential shift as a function of acidity at pH=1.5–3.5. The electrocatalysis behaviors of this compound towards the reduction of nitrite and iodate ions have been studied in details. The electrocatalytic reduction of NO2− and IO3− by the modified carbon paste electrode (CPE) of 1 in various buffer solutions showed an electrocatalytic reduction activity of NO2−>IO3−.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
