Investigations into the Electrochemical, Surface,
and Electrocatalytic Properties of the Surface-Immobilized Polyoxometalate,
TBA<sub>3</sub>K[SiW<sub>10</sub>O<sub>36</sub>(PhPO)<sub>2</sub>]
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Abstract
Surface anchoring of an organic functionalized
POM, TBA<sub>3</sub>K[SiW<sub>10</sub>O<sub>36</sub>(PhPO)<sub>2</sub>] was carried out
by two methods, the layer-by-layer (LBL) assembly technique by employing
a pentaerythritol-based ruthenium(II) metallodendrimer as a cationic
moiety and also by entrapping the POM in a conducting polypyrrole
film. The redox behavior of the constructed films was studied by using
cyclic voltammetry and electrochemical impedance spectroscopy. The
surface morphologies of the constructed multilayers were examined
by scanning electron microscopy and atomic force microscopy. X-ray
photoelectron spectroscopy was conducted to confirm the elements present
within the fabricated films. The multilayer assembly was also investigated
for its catalytic efficiency towards the reduction of nitrite