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金纳米颗粒上的等离子体催化诱导电子转移实现六氰合铁（III）的还原

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

作者信息

Sarhid Iyad, Lampre Isabelle, Dragoe Diana, Beaunier Patricia, Palpant Bruno, Remita Hynd

机构信息

Laboratoire de Chimie Physique, Université Paris-Sud, UMR 8000 CNRS, Université Paris-Saclay, 91405 Orsay, France.

Institut de Chimie Moléculaire et des Matériaux, Université Paris-Sud, UMR 8182 CNRS, Université Paris-Saclay, 91405 Orsay, France.

出版信息

Materials (Basel). 2019 Sep 17;12(18):3012. doi: 10.3390/ma12183012.

DOI:10.3390/ma12183012
PMID:31533263
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6766293/
Abstract

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.

摘要

氧化还原反应在环境催化中具有重要意义。金纳米颗粒（Au-NPs）因其催化活性和局域表面等离子体共振（LSPR）而备受关注。在本研究中，我们详细研究了由两种不同尺寸（15纳米和30纳米）的球形金纳米颗粒催化，并在其LSPR波段激发下，将铁氰化物（III）离子还原为亚铁氰化物（II）离子的过程。实验在有（或无）硫代硫酸钠的情况下进行。在可见光激发下，Au-NPs的存在会增强这种催化作用。即使没有硫代硫酸钠，这种还原反应也会发生。我们的结果证明了热电子在这种还原反应中的作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4986/6766293/67e734fd2e3d/materials-12-03012-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4986/6766293/083fbebb9580/materials-12-03012-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4986/6766293/67e734fd2e3d/materials-12-03012-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4986/6766293/2b5b4b144c96/materials-12-03012-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4986/6766293/eccbe55cc3f2/materials-12-03012-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4986/6766293/1f448c3f4a75/materials-12-03012-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4986/6766293/ab1c72c1aeab/materials-12-03012-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4986/6766293/ff8ffe401c07/materials-12-03012-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4986/6766293/083fbebb9580/materials-12-03012-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4986/6766293/67e734fd2e3d/materials-12-03012-g012.jpg

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