Electropolymerized films of Co(III)tetra(4-hydroxyphenyl)porphyrin doped with ionic-liquid-functionalized graphene were obtained by a simple one-step preparation procedure. Spectroscopic (UV-Vis., Raman), microscopic (AFM, SEM), and electrochemical methods were used to characterize the films. The composite films show considerable lower H2O2 yields and at more positive potentials for O2 reduction, as compared to the undoped ones. Stability during long-term use of films applied on electrodes, including porous ones, allow to consider them as possible non-noble catalyst based O2 reduction cathodes in fuel cells.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Surfaces, Coatings and Films
- Materials Chemistry