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Electrocatalytic Activity of Nanohybrids Based on Carbon Nanomaterials and MFe 2 O 4 (M=Co, Mn) towards the Reduction of Hydrogen Peroxide
Author(s) -
Gutierrez Fabiana A.,
Mazario Eva,
Menéndez Nieves,
Herrasti Pilar,
Rubianes María D.,
Zagal José H.,
Yañez C.,
Rivas Gustavo A.,
Bollo Soledad,
Recio F. Javier
Publication year - 2018
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201800209
Subject(s) - hydrogen peroxide , nanomaterials , graphene , glassy carbon , amperometry , carbon fibers , carbon nanotube , catalysis , materials science , electrocatalyst , inorganic chemistry , nafion , oxide , chemistry , electrochemistry , chemical engineering , electrode , nanotechnology , cyclic voltammetry , composite number , organic chemistry , composite material , engineering
We report the advantages of hybrid nanomaterials prepared with electrogenerated ferrites (MFe 2 O 4 ; M: Co, Mn) and multi‐walled carbon nanotubes (MWCNTs) or thermally reduced graphene oxide (TRGO) on the electro‐reduction of hydrogen peroxide. Glassy carbon electrodes (GCE) modified with these hybrid nanomaterials dispersed in Nafion/isopropanol demonstrated a clear synergism on the catalytic reduction of reduction of hydrogen peroxide at pH 13.00. The intimate interaction between MFe 2 O 4 and carbon nanomaterials allowed a better electronic transfer and a facilitated regeneration of M 2+ at the carbon nanomaterials, reducing the charge transfer resistances for hydrogen peroxide reduction and increasing the sensitivities of the amperometric response.