Synthesis, characterization, and solution studies of polyoxometalate-doped conducting polymers

Abstract

The present research focus is to design a new catalyst by doping polyoxometalate (POM) in conducting polymers. Polypyrrole (PPy)-doped Keggin type POM [PMO12O40]3− with various molar concentrations were synthesized using the coprecipitation method. The doped samples were synthesized and characterized using spectral techniques such as Fourier transform infrared spectra, which show the presence of extended functional groups, and scanning electron microscopic morphology exhibits a square-shaped structure. X-Ray diffraction results reveal crystallite size of around 40 nm. The conductivity of PPy is 3.3 × 10−6 S cm−1, whereas polyacid-doped polypyrrole has resulted in increased conductivity of 7.12 × 10−5 S cm−1. The antimicrobial activity of PPy revealed a better antibacterial activity due to the presence of the NH group and aromatic ring in the structure.

Fabrication of a polyoxotungstate/metal–organic framework/phosphorus-doped reduced graphene oxide nanohybrid modified glassy carbon electrode by electrochemical reduction and its electrochemical properties

“…In the last few decades, many porous solids have been investigated as immobilizers for POMs, like silica, conducting polymers, ion-exchange resin, and carbon materials. [13][14][15][16] Since discovering metal-organic frameworks (MOFs), these porous materials have been widely used as potential supports for POMs. 3,17,18 MOFs are inorganic-organic hybrid crystalline materials are fabricated from metal-containing nodes and organic linkers through coordination bonds.…”

“…In the last few decades, many porous solids have been investigated as immobilizers for POMs, like silica, conducting polymers, ion-exchange resin, and carbon materials. 13–16 Since discovering metal–organic frameworks (MOFs), these porous materials have been widely used as potential supports for POMs. 3,17,18…”