Title :

How the Intricate Interactions between Carbon Nanotubes and Two Bilirubin Oxidases Control Direct and Mediated O2 Reduction

Author(s) :

Mazurenko, Ievgen [Auteur]
Bioénergétique et Ingénierie des Protéines [BIP ]
Monsalve, Karen [Auteur]
Bioénergétique et Ingénierie des Protéines [BIP ]
Rouhana, Jad [Auteur]
Centre de Recherche Paul Pascal [CRPP]
Parent, Philippe [Auteur]
Centre Interdisciplinaire de Nanoscience de Marseille [CINaM]
Laffon, Carine [Auteur]
Centre Interdisciplinaire de Nanoscience de Marseille [CINaM]
Goff, Alan Le [Auteur]
Département de Chimie Moléculaire - Chimie Inorganique Redox [DCM - CIRE ]
Szunerits, Sabine [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Boukherroub, Rabah [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Giudici-Orticoni, Marie-Thérèse [Auteur]
Bioénergétique et Ingénierie des Protéines [BIP ]
Mano, Nicolas [Auteur]
Centre de Recherche Paul Pascal [CRPP]
Lojou, Elisabeth [Auteur correspondant]
Bioénergétique et Ingénierie des Protéines [BIP ]

Journal title :

ACS Applied Materials & Interfaces

Pages :

pp. 23074-23085

Publisher :

Washington, D.C. : American Chemical Society

Publication date :

2016-08-17

ISSN :

1944-8244

English keyword(s) :

Bioelectrocatalysis
Carbon nanotubes
Bilirubin oxidase
Electrostatic interactions
Direct electron transfer
Mediated electron transfer

HAL domain(s) :

Chimie/Matériaux
Chimie/Catalyse

English abstract : [en]

Due to the lack of a valid approach in the design of electrochemical interfaces modified with enzymes for efficient catalysis, many oxidoreductases are still not addressed by electrochemistry. We report in this work an ...
Show more >Due to the lack of a valid approach in the design of electrochemical interfaces modified with enzymes for efficient catalysis, many oxidoreductases are still not addressed by electrochemistry. We report in this work an in-depth study of the interactions between two different bilirubin oxidases, (from the fungus Myrothecium verrucaria and from the bacterium Bacillus pumilus), catalysts of oxygen reduction, and carbon nanotubes bearing various surfacecharges (pristine, carboxylic-, and pyrene-methylamine-functionalized). The surface charges and dipole moment of the enzymes as well as the surface state of the nanomaterials are characterized as a function of pH. An original electrochemical approach allows determination of the best interface for direct or mediated electron transfer processes as a function of enzyme, nanomaterial type, and adsorption conditions. We correlate these experimentalresults to theoric voltammetric curves. Such an integrative study suggests strategies for designing efficient bioelectrochemical interfaces toward the elaboration of biodevices such as enzymatic fuel cells for sustainable electricity production.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

Ingénierie de matériaux poreux et d'enzymes pour le développement de biopiles
INITIATIVE D'EXCELLENCE AIX MARSEILLE UNIVERSITE

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL