Plasmon-driven electrochemical methanol oxidation on gold nanohole electrodes
Liuqing Pang
(1)
,
Alexandre Barras
(1, 2)
,
Vladyslav Mishyn
(1)
,
Svetlana Heyte
(3)
,
Egon Heuson
(4)
,
Hamid Oubaha
,
Georgiana Sandu
,
Sorin Melinte
,
Rabah Boukherroub
(1, 2)
,
Sabine Szunerits
(1, 2)
Alexandre Barras
- Fonction : Auteur
- PersonId : 745941
- IdHAL : alexandre-barras
- ORCID : 0000-0003-2821-7079
- IdRef : 139076123
Vladyslav Mishyn
- Fonction : Auteur
- PersonId : 1334952
- IdHAL : vladyslav-mishyn
Egon Heuson
- Fonction : Auteur
- PersonId : 17778
- IdHAL : egon-heuson
- ORCID : 0000-0001-6904-9214
- IdRef : 230468136
Hamid Oubaha
- Fonction : Auteur
Georgiana Sandu
- Fonction : Auteur
Sorin Melinte
- Fonction : Auteur
Rabah Boukherroub
- Fonction : Auteur
- PersonId : 177969
- IdHAL : rabah-boukherroub
- ORCID : 0000-0002-9795-9888
- IdRef : 139279474
Sabine Szunerits
- Fonction : Auteur
- PersonId : 21321
- IdHAL : sabine-szunerits
- ORCID : 0000-0002-1567-4943
- IdRef : 097506362
Résumé
Direct methanol oxidation is expected to play a central role in low-polluting future power sources. However, the sluggish and complex electro-oxidation of methanol is one of the limiting factors for any practical application. To solve this issue, the use of plasmonic is considered as a promising way to accelerate the methanol oxidation reaction. In this study, we report on a novel approach for achieving enhanced methanol oxidation currents. Perforated gold thin film anodes were decorated with Pt/Ru via electrochemical deposition and investigated for their ability for plasmon-enhanced electrocatalytic methanol oxidation in alkaline media. The novel methanol oxidation anode (AuNHs/PtRu), combining the strong light absorption properties of a gold nanoholes array-based electrode (AuNHs) with surface-anchored bimetallic Pt/Ru nanostructures, known for their high activity toward methanol oxidation, proved to be highly efficient in converting methanol via the hot holes generated in the plasmonic electrode. Without light illumination, AuNHs/PtRu displayed a maximal current density of 13.7 mA/cm2 at -0.11 V vs Ag/AgCl. Enhancement to 17.2 mA/cm2 was achieved under 980 nm laser light illumination at a power density of 2 W/cm2. The thermal effect was negligible in this system, underlining a dominant plasmon process. Fast generation and injection of charge carriers were also evidenced by the abrupt change in the current density upon laser irradiation. The good stability of the interface over several cycles makes this system interesting for methanol electro-oxidation.
Domaines
CatalyseFormat du dépôt | Fichier |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
Plasmon-driven electrochemical methanol oxidation on gold nanohole electrodes
|
Résumé |
en
Direct methanol oxidation is expected to play a central role in low-polluting future power sources. However, the sluggish and complex electro-oxidation of methanol is one of the limiting factors for any practical application. To solve this issue, the use of plasmonic is considered as a promising way to accelerate the methanol oxidation reaction. In this study, we report on a novel approach for achieving enhanced methanol oxidation currents. Perforated gold thin film anodes were decorated with Pt/Ru via electrochemical deposition and investigated for their ability for plasmon-enhanced electrocatalytic methanol oxidation in alkaline media. The novel methanol oxidation anode (AuNHs/PtRu), combining the strong light absorption properties of a gold nanoholes array-based electrode (AuNHs) with surface-anchored bimetallic Pt/Ru nanostructures, known for their high activity toward methanol oxidation, proved to be highly efficient in converting methanol via the hot holes generated in the plasmonic electrode. Without light illumination, AuNHs/PtRu displayed a maximal current density of 13.7 mA/cm2 at -0.11 V vs Ag/AgCl. Enhancement to 17.2 mA/cm2 was achieved under 980 nm laser light illumination at a power density of 2 W/cm2. The thermal effect was negligible in this system, underlining a dominant plasmon process. Fast generation and injection of charge carriers were also evidenced by the abrupt change in the current density upon laser irradiation. The good stability of the interface over several cycles makes this system interesting for methanol electro-oxidation.
|
Auteur(s) |
Liuqing Pang
1
, Alexandre Barras
1, 2
, Vladyslav Mishyn
1
, Svetlana Heyte
3
, Egon Heuson
4
, Hamid Oubaha
, Georgiana Sandu
, Sorin Melinte
, Rabah Boukherroub
1, 2
, Sabine Szunerits
1, 2
1
IEMN -
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
( 1296 )
- [Univ. Lille, CNRS, Ecole Centrale Lille, Yncréa-ISEN, UVHC] ––
Laboratoire Central – Cité Scientifique – Avenue Poincaré – CS 60069 – 59652 VILLENEUVE D’ASCQ CEDEX
- France
2
NBI - IEMN -
NanoBioInterfaces - IEMN
( 1067478 )
- Groupe NBI
- France
3
UCCS -
Unité de Catalyse et Chimie du Solide - UMR 8181
( 3209 )
- Cité Scientifique - Bâtiment C3 - 59655 Villeneuve d'Ascq Cedex
- France
4
BioEcoAgro - UMR transfrontalière INRAe - UMRT1158
( 1057473 )
- UMRT 1158 -
* Site de Laon - Pôle du Griffon - 180 rue Pierre-Gilles de Gennes - 02000 BARENTON-BUGNY
* Site de l'Ecole Polytechnique Universitaire de Lille -
Institut VIOLLETTE- Aile C, Avenue Paul Langevin, 59655 Villeneuve d'Ascq Cedex
- France
|
Nom de la revue |
|
Langue du document |
Anglais
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Audience |
Internationale
|
Date de publication |
2020-11-11
|
Date de publication électronique |
2020-10-29
|
Volume |
12
|
Numéro |
45
|
Page/Identifiant |
50426-50432
|
Projet(s) ANR |
|
Collaboration/Projet |
|
Domaine(s) |
|
Mots-clés |
en
localized surface plasmon resonance, hot carriers, electrocatalysis, electrochemical methanol oxidation, photoelectrochemistry
|
DOI | 10.1021/acsami.0c14436 |
UT key WOS | 000592481300021 |
Origine :
Fichiers produits par l'(les) auteur(s)
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