Abstract

In this project, generation of new materials that work as electro and photoelectrocatalysts for the reduction of oxygen and hydrogen is proposed. These materials would be formed employing columns of commercial porphyrin complexes mixtures, having different central metals, such as Fe, Co, Cu, Zn and Ni, deposited on a glassy carbon electrode which is previously modified with graphene (GC/GP). On the surface of a graphene-modified glassy carbon electrode is possible to attach molecules through covalent bonds. These molecules that are covalently bonded to the surface, would work as "anchor" molecules by coordinating to an axial position of the complex, forming a first layer of porphyrins, upon which the remaining mixture of complexes would be stacked, conferring supramolecular properties to the system, facilitating charge transfer phenomena and creating systems with photoelectrocatalytic properties. It is expected that obtention of these systems with complex mixtures, yields synergistic phenomena that favor and increase the abovementioned properties. Also, the fact of modifying the glassy carbon surface with graphene on a previous stage, can highly improve the surface characteristics, considering the graphene properties. .