title: Chemical Modification of Graphene Oxide through Diazonium Chemistry and Its Influence on the Structure-Property Relationships of Graphene Oxide-Iron Oxide Nanocomposites.
abstract: 4-Carboxyphenyl groups are covalently grafted onto graphene oxide via diazonium chemistry for studying their role on the adsorption of iron oxide nanoparticles. The nanoparticles are deposited via a novel phase-transfer approach involving specific interactions at the interface between two immiscible solvents. The increased density and the homogeneous distribution of surface carboxyl moieties enable the preparation of a nanocomposite with improved iron oxide distribution and loading. Structure-properties relationships are investigated by analysing the electrochemical properties of the nanocomposites, which are regarded as promising active materials for application in supercapacitors. It is demonstrated that the nature of the interactions between the components similarly affects the overall electrochemical performances of the nanocomposites and the structure of the materials.
authors.affiliation: Institut für Chemie, Humboldt Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin (Germany).
authors.forename: Valentina
authors.initials: V
authors.lastname: Rebuttini
authors.affiliation: Università degli Studi di Messina, Dipartimento di Fisica e di Scienze della Terra, Viale F. Stagno d'Alcontres 31, 98166 Messina (Italy).
authors.forename: Enza
authors.initials: E
authors.lastname: Fazio
authors.affiliation: Dipartimento di Ingegneria Civile, dell'Energia dell'Ambiente e dei Materiali (DICEAM), Università "Mediterranea", Loc. Feo di Vito, 89122 Reggio Calabria (Italy).
authors.forename: Saveria
authors.initials: S
authors.lastname: Santangelo
authors.affiliation: Università degli Studi di Messina, Dipartimento di Fisica e di Scienze della Terra, Viale F. Stagno d'Alcontres 31, 98166 Messina (Italy).
authors.forename: Fortunato
authors.initials: F
authors.lastname: Neri
authors.affiliation: Institut für Chemie, Humboldt Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin (Germany).
authors.forename: Gianvito
authors.initials: G
authors.lastname: Caputo
authors.affiliation: Capacités SAS, 26 boulevard Vincent Gâche, 44200 Nantes (France).
authors.forename: Cédric
authors.initials: C
authors.lastname: Martin
authors.affiliation: Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, 2 rue de la Houssinière, BP32229, 44322 Nantes Cedex 3 (France).|Département Chimie, Université du Québec à Montréal, Case Postale 8888, Succursale Centre-Ville, Montréal, Québec, H3C 3P8 (Canada).|Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, 33, rue Saint Leu, 80039 Amiens Cedex (France).
authors.forename: Thierry
authors.initials: T
authors.lastname: Brousse
authors.affiliation: Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, 33, rue Saint Leu, 80039 Amiens Cedex (France).|Institut Charles Gerhardt, UMR 5253 - Equipe AIME, Université de Montpellier II, 2 Place Eugène Bataillon, CC 1502, 34095 Montpellier Cedex 5 (France).
authors.forename: Frédéric
authors.initials: F
authors.lastname: Favier
authors.affiliation: Institut für Chemie, Humboldt Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin (Germany). nicola.pinna@hu-berlin.de.
authors.forename: Nicola
authors.initials: N
authors.lastname: Pinna
keywords: electrochemical performance; graphene; iron oxide; nanocomposites; supercapacitors