Oxidized Graphene in Ionic Liquids for Assembling Chemically Modified Electrodes: A Structural and Electrochemical Characterization Study (Articolo in rivista)

Type
Label
  • Oxidized Graphene in Ionic Liquids for Assembling Chemically Modified Electrodes: A Structural and Electrochemical Characterization Study (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/ac301285e (literal)
Alternative label
  • F. Valentini, D. Roscioli, M. Carbone, V. Conte, B. Floris, G. Palleschi, R. Flammini, E. M. Bauer, G. Nasillo, E. Caponetti (2012)
    Oxidized Graphene in Ionic Liquids for Assembling Chemically Modified Electrodes: A Structural and Electrochemical Characterization Study
    in Analytical chemistry (Wash.)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • F. Valentini, D. Roscioli, M. Carbone, V. Conte, B. Floris, G. Palleschi, R. Flammini, E. M. Bauer, G. Nasillo, E. Caponetti (literal)
Pagina inizio
  • 5823 (literal)
Pagina fine
  • 5831 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 83 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 13 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Department Chemical Science and Technologies, University Tor Vergata, Via della Ricerca Scientifica,1 00133 Roma CNR-IMIP, Istituto di Metodologie Inorganiche e Plasmi, Area della Ricerca di Roma I, via Salaria km 29.300, Monterotondo Scalo (RM), Italy and INFN-LNF, Laboratori Nazionali di Frascati, Via E. Fermi, 40, 00044 Frascati (RM) Italy Institute of Structure of Matter, Italian National Research Council, Via Salaria km 29.3, 00015 Monterotondo (RM), Italy Centro Grandi Apparecchiature, University of Palermo, Via F. Marini 14, 90128 Palermo, Italy and Department of Physical Chemistry, University of Palermo,Viale delle Scienze 90128 Palermo, Italy (literal)
Titolo
  • Oxidized Graphene in Ionic Liquids for Assembling Chemically Modified Electrodes: A Structural and Electrochemical Characterization Study (literal)
Abstract
  • Dispersions of graphene oxide (GO) nanoribbons in ionic liquids, ILs (either 1-butyl-3-methylimidazolium chloride (BMIM-Cl-) or 1-butylpyridinium chloride (-Bupy-Cl-)) have been used to assemble modified screen printed electrodes (SPEs). The graphene oxide/ionic liquid dispersions have been morphologically and structurally characterized by the use of several techniques: X-ray photoelectron spectroscopy (XPS), Fourier transform-infrared (FT-IR) spectroscopy, high-resolution-transmission electron microscopy (HR-TEM). The assembled modified SPEs have then been challenged with various compounds and compared to several electro-active targets. In all cases high peak currents were detected, as well as significant potential shifts, especially in the detection of catecholamines and NADH, compared with the bare SPE and the conventional electrodes, such as glassy carbon (GC) and highly oriented pyrolitic graphite (HOPG). This opens the way to the assembly of new types of sensors and biosensors. The enhanced performances observed are attributed to electrocatalytic effects related to the high electrode surface area, to oxygen-assisted electron transfer, as well as to the disordering effect of the ILs, this latter related to the favorable pi-pi interactions with the Its and the GO plane. (literal)
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