info:eu-repo/semantics/article
Multi-walled carbon nanotubes/graphene nanoribbons hybrid materials with superior electrochemical performance
Fecha
2014-01Registro en:
Hernández Ferrer, Javier; Laporta, Pablo; Gutierrez, Fabiana Andrea; Rubianes, María Dolores; Rivas, Gustavo Adolfo; et al.; Multi-walled carbon nanotubes/graphene nanoribbons hybrid materials with superior electrochemical performance; Elsevier Science Inc; Electrochemistry Communications; 39; 1-2014; 26-29
1388-2481
CONICET Digital
CONICET
Autor
Hernández Ferrer, Javier
Laporta, Pablo
Gutierrez, Fabiana Andrea
Rubianes, María Dolores
Rivas, Gustavo Adolfo
Martinez, Maria Teresa
Resumen
Graphene nanoribbons (GNRs) were synthesized by oxidation of arc discharge multi-walled carbon nanotubes(MWCNTs) in concentrated H2SO4using KMnO4as oxidizing agent at different times from 15 to 120 min. Oneof the GNR samples was further electrochemically and chemically reduced. The material obtained after 15 minof oxidation time (GNR015) was a hybrid material containing MWCNTs, partially unzipped GNRs-MWCNTs andfully unzipped GNRs, and it demonstrated a superior electrochemical performance. This material presented thehighest heterogeneous charge transfer constant and sensitivity towards H2O2reduction. These properties aredue to the balance between the content of unzipped MWCNTs, Csp2carbon structure and oxygen moieties.GNR015, thus reveals as a promising platform for further applications in electrochemical sensing.