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Hexacyano Ferrate (III) Reduction by Electron Transfer Induced by Plasmonic Catalysis on Gold Nanoparticles

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Laboratoire de Chimie Physique, Université Paris-Sud, UMR 8000 CNRS, Université Paris-Saclay, 91405 Orsay, France
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Institut de Chimie Moléculaire et des Matériaux, Université Paris-Sud, UMR 8182 CNRS, Université Paris-Saclay, 91405 Orsay, France
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Sorbonne Université, CNRS, Laboratoire de Réactivité de Surface, UMR 7197, F-75005 Paris CEDEX 05, France
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Laboratoire de Photonique Quantique et Moléculaire, UMR 8537 CentraleSupélec/Ecole Normale Supérieure Paris-Saclay/CNRS, Université Paris Saclay, 91190 Gif-sur-Yvette, France
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CNRS, Laboratoire de Chimie Physique, UMR 8000 Université Paris-Sud, Université Paris-Saclay, 91405 Orsay, France
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Authors to whom correspondence should be addressed.
Materials 2019, 12(18), 3012; https://doi.org/10.3390/ma12183012
Received: 15 July 2019 / Revised: 10 September 2019 / Accepted: 13 September 2019 / Published: 17 September 2019
(This article belongs to the Section Catalytic Materials)
Redox reactions are of great importance in environmental catalysis. Gold nanoparticles (Au-NPs) have attracted much attention because of their catalytic activity and their localized surface plasmon resonance (LSPR). In the present study, we investigated, in detail, the reduction of ferricyanide (III) ion into a ferrocyanide (II) ion catalyzed by spherical gold nanoparticles of two different sizes, 15 nm and 30 nm, and excited at their LSPR band. Experiments were conducted in the presence (or absence) of sodium thiosulfate. This catalysis is enhanced in the presence of Au- NPs under visible light excitation. This reduction also takes place even without sodium thiosulfate. Our results demonstrate the implication of hot electrons in this reduction. View Full-Text
Keywords: catalysis; ferricyanide (III) reduction; plasmon resonance; gold nanoparticles; hot electrons; electron transfer; size effect catalysis; ferricyanide (III) reduction; plasmon resonance; gold nanoparticles; hot electrons; electron transfer; size effect
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MDPI and ACS Style

Sarhid, I.; Lampre, I.; Dragoe, D.; Beaunier, P.; Palpant, B.; Remita, H. Hexacyano Ferrate (III) Reduction by Electron Transfer Induced by Plasmonic Catalysis on Gold Nanoparticles. Materials 2019, 12, 3012.

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