Electrochemical bubble generation via hydrazine oxidation for the in situ control of an electrodeposited conducting polymer micro/- nanostructure

DAVID POSSETTO, LUCIANA FERNANDEZ, GABRIELA MARZARI AND FERNANDO FUNGO

RSC Advances

Royal Society of Chemistry

Año: 2021

2046-2069

Herein, a simple, in situ, on step and highly repeatable electrochemical method that allows controlling thenanostructure of electrodeposited polymer films is reported. As an example, the tuning of theelectrodeposited polypyrrole nanostructures using inert gas bubbles as the template at the electrodesurface generated by the electrochemical oxidation of hydrazine is shown. The hydrazine dischargeoccurs at a lower potential regarding the beginning of pyrrole electropolymerization process, whichallows the modulation of the density and size of the bubbles on the surface electrode controllingelectrochemical parameters (applied potential, concentration, time, etc.). Subsequently, the appliedpotential is moved to where the pyrrole polymerization begins, which induces the material dischargesaround the bubble template producing polypyrrole hollow structures with definite patterns on theelectrode surface. This methodology is proposed as a simple model for the electrodeposition with themorphological control of a wide range of conductive polymers