To enhance the ability to remove mercury(II) from aqueous media, an Fe3O4 magnetic nanocomposite (PPy–GO) composed of polypyrrole (PPy) and graphene oxide (GO) was synthesized in situ and characterized via scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), X-ray photoelectron spectrometry (XPS), X-ray diffraction (XRD), Fourie...

The relationship between the morphology of polypyrrole and their electrocatalytic performances towards the oxygen reduction reaction (ORR) in alkaline media is described; annealed polypyrrole with granular- and tubules-like morphology exhibited different catalytic efficiencies.

1-5 Napthalenedisulphonic acid (NDSA) doped polypyrrole thin films are prepared by chemical oxidation polymerization and applied as modified claddings to optical fibers for organophosphate (dimethyl-methyl phosphonate, DMMP) sensing. DMMP sensing takes place via intensity modulation in multimode fibers due to refractive index modulation in polypyrrole films due to DMMP adsorption. The polypyrro...

This paper reports a novel approach in the electrode immobilization of an enzyme, invertase, by electrochemical polymerization of pyrrole in the presence of enzyme. The polypyrrole/invertase and polyamide/polypyrrole/invertase electrodes were constructed by the entrapment of enzyme in conducting matrices during electrochemical polymerization of pyrrole. This study involves the preparation and c...