English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/142696
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Fabrication of high surface area graphene electrodes with high performance towards enzymatic oxygen reduction

AuthorsDi Bari, Chiara; Goñi-Urtiaga, Asier; Pita, Marcos ; Shleev, Sergey; Toscano, Miguel D.; Sainz, Raquel ; López de Lacey, Antonio
Oxygen Reduction Reaction
Bilirubin Oxidase
Issue Date10-Feb-2016
CitationElectrochimica Acta 191: 500-509 (2016)
AbstractHigh surface area graphene electrodes were prepared by simultaneous electrodeposition and electroreduction of graphene oxide. The electrodeposition process was optimized in terms of pH and conductivity of the solution and the obtained graphene electrodes were characterized by X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy and electrochemical methods (cyclic voltammetry and impedance spectroscopy). Electrodeposited electrodes were further functionalized to carry out covalent immobilization of two oxygen-reducing multicopper oxidases: laccase and bilirubin oxidase. The enzymatic electrodes were tested as direct electron transfer based biocathodes and catalytic currents as high as 1 mA/cm2 were obtained. Finally, the mechanism of the enzymatic oxygen reduction reaction was studied for both enzymes calculating the Tafel slopes and transfer coefficients.
Publisher version (URL)http://doi.org/10.1016/j.electacta.2016.01.101
Identifiersdoi: 10.1016/j.electacta.2016.01.101
issn: 0013-4686
Appears in Collections:(ICP) Artículos
Show full item record
Review this work

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.