Preprint Article Version 1 This version is not peer-reviewed

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

Version 1 : Received: 15 July 2019 / Approved: 17 July 2019 / Online: 17 July 2019 (06:16:11 CEST)

How to cite: 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. Preprints 2019, 2019070197 (doi: 10.20944/preprints201907.0197.v1). 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. Preprints 2019, 2019070197 (doi: 10.20944/preprints201907.0197.v1).

Abstract

Redox reactions are of great importance in environmental catalysis. Gold nanoparticles (NPs) have attracted much attention because of their catalytic activity and their localized surface plasmon resonance (LSPR). In the present study, we investigated in details the reduction of ferricyanide (III) ion into 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 not) of sodium thiosulfate. This catalysis is enhanced in the presence of Au-NPs under visible light excitation. This reduction takes also place even without sodium thiosulfate. Our results demonstrate the implication of hot electrons in this reduction.

Subject Areas

catalysis; ferricyanide (III) reduction; plasmon resonance; gold nanoparticles; electron transfer

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