electro-catalytic oxidation of methanol at ni(oh)2 nanoparticles-poly (o-anisidine)/triton x-100 film onto phosphotungstic acid-modified carbon paste electrode

In this work, phosphotungstic acid modified carbon paste electrode (pwa-cpe) is used as a substrate for electro-polymerization of o-anisidine (oa). also, triton x-100 (tx-100) surfactant is used as an additive for electrochemical polymerization of oa onto the pwa-cpe, which is investigated as a novel matrix for dispersion of nickel species. the prepared electrodes are characterized by scanning electron microscopy (sem), energy dispersive spectroscopy (eds), and electrochemical methods. growth of the poly o-anisidine (poa) film in the absence of tx-100 and/or pwa is very poor, while it considerably increases in the presence of them. the methanol oxidation and stability of the ni/poa (tx-100)/pwa-cpe are investigated by various electrochemical techniques. it has been shown that the poly (o-anisidine)/triton x-100 (poa (tx-100)) at the surface of pwa-cpe improves the catalytic efficiency of the dispersed ni(oh)2 nanoparticles towards methanol oxidation.