Electrocatalytic activity of nanohybrids based on carbon nanomaterials and MFe2O4 (M= Co, Mn) towards the reduction of hydrogen peroxide

FABIANA GUTIERREZ,; EVA MAZARIO; NIEVES MENÉNDEZ; PILAR HERRASTI; MARÍA RUBIANES; JOSÉ ZAGAL; CLAUDIA YÁÑEZ; SOLEDAD BOLLO, ; JAVIER RECIO; GUSTAVO RIVAS

ELECTROANALYSIS

WILEY-V C H VERLAG GMBH

Lugar: Weinheim; Año: 2018

1040-0397

e report the advantages of hybrid nanomaterials prepared with electrogeneratedferrites (MFe2O4; M: Co, Mn) and multi-walled carbon nanotubes (MWCNTs) orthermally reduced graphene oxide (TRGO) on the electro-reduction of hydrogenperoxide. Glassy carbon electrodes (GCE) modified with these hybrid nanomaterialsdispersed in Nafion/isopropanol demonstrated a clear synergism on the catalyticreduction of reduction of hydrogen peroxide at pH 13.00. The intimate interactionbetween MFe2O4 and carbon nanomaterials allowed a better electronic transfer and afacilitated regeneration of M2+ at the carbon nanomaterials, reducing the chargetransfer resistances for hydrogen peroxide reduction and increasing the sensitivities ofthe amperometric response.