An advanced plasmonic photocatalyst containing silver(0) single atoms for selective borylation of aryl iodides

Enxin Cui; Haibin Li; Chen Zhang; Dan Qiao; Manoj B. Gawande; Chen Ho Tung; Yifeng Wang

doi:10.1016/j.apcatb.2021.120674

An advanced plasmonic photocatalyst containing silver(0) single atoms for selective borylation of aryl iodides

Enxin Cui, Haibin Li, Chen Zhang, Dan Qiao, Manoj B. Gawande, Chen Ho Tung, Yifeng Wang

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

A conventional plasmonic Ag-AgCl photocatalyst consists of Ag nanoparticles (AgNPs) and AgCl. Here, we converted a small amount of Ag⁺ on the surfaces of AgCl particles into single-atom Ag(0) (SAAg). SAAg was characterized with high-angle annular dark field aberration corrected (HAADF AC)-STEM and quantified with electron spin resonance (ESR). The obtained Ag_EG/Mg(OH)₂ material was efficient and afforded excellent selectivity control between hydrodehalogenation and deiodination-borylation under visible light irradiation. SAAg acted as the 1e⁻-reducing site of the photocatalyst and its loading is linearly correlated with the initial reaction rate. While the quantity of SAAg was only 6.0 × 10^–8 mol g⁻¹, the TOF of SAAg reached 1.4 × 10⁴ h⁻¹. The oxidation state of SAAg retained 0 in both the resting and the working states. This study suggests SAAg may be an effective cocatalyst in general for reductive dehalogenation of organic halides.

Original language	English
Article number	120674
Journal	Applied Catalysis B: Environmental
Volume	299
DOIs	https://doi.org/10.1016/j.apcatb.2021.120674
State	Published - 15 Dec 2021
Externally published	Yes

Keywords

Dehalogenation
Organic halide
Plasmonic photocatalysts
Single atom catalysis
Visible light

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

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10.1016/j.apcatb.2021.120674

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title = "An advanced plasmonic photocatalyst containing silver(0) single atoms for selective borylation of aryl iodides",

abstract = "A conventional plasmonic Ag-AgCl photocatalyst consists of Ag nanoparticles (AgNPs) and AgCl. Here, we converted a small amount of Ag+ on the surfaces of AgCl particles into single-atom Ag(0) (SAAg). SAAg was characterized with high-angle annular dark field aberration corrected (HAADF AC)-STEM and quantified with electron spin resonance (ESR). The obtained AgEG/Mg(OH)2 material was efficient and afforded excellent selectivity control between hydrodehalogenation and deiodination-borylation under visible light irradiation. SAAg acted as the 1e−-reducing site of the photocatalyst and its loading is linearly correlated with the initial reaction rate. While the quantity of SAAg was only 6.0 × 10–8 mol g−1, the TOF of SAAg reached 1.4 × 104 h−1. The oxidation state of SAAg retained 0 in both the resting and the working states. This study suggests SAAg may be an effective cocatalyst in general for reductive dehalogenation of organic halides.",

keywords = "Dehalogenation, Organic halide, Plasmonic photocatalysts, Single atom catalysis, Visible light",

author = "Enxin Cui and Haibin Li and Chen Zhang and Dan Qiao and Gawande, {Manoj B.} and Tung, {Chen Ho} and Yifeng Wang",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

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doi = "10.1016/j.apcatb.2021.120674",

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T1 - An advanced plasmonic photocatalyst containing silver(0) single atoms for selective borylation of aryl iodides

AU - Cui, Enxin

AU - Li, Haibin

AU - Zhang, Chen

AU - Qiao, Dan

AU - Gawande, Manoj B.

AU - Tung, Chen Ho

AU - Wang, Yifeng

PY - 2021/12/15

Y1 - 2021/12/15

N2 - A conventional plasmonic Ag-AgCl photocatalyst consists of Ag nanoparticles (AgNPs) and AgCl. Here, we converted a small amount of Ag+ on the surfaces of AgCl particles into single-atom Ag(0) (SAAg). SAAg was characterized with high-angle annular dark field aberration corrected (HAADF AC)-STEM and quantified with electron spin resonance (ESR). The obtained AgEG/Mg(OH)2 material was efficient and afforded excellent selectivity control between hydrodehalogenation and deiodination-borylation under visible light irradiation. SAAg acted as the 1e−-reducing site of the photocatalyst and its loading is linearly correlated with the initial reaction rate. While the quantity of SAAg was only 6.0 × 10–8 mol g−1, the TOF of SAAg reached 1.4 × 104 h−1. The oxidation state of SAAg retained 0 in both the resting and the working states. This study suggests SAAg may be an effective cocatalyst in general for reductive dehalogenation of organic halides.

AB - A conventional plasmonic Ag-AgCl photocatalyst consists of Ag nanoparticles (AgNPs) and AgCl. Here, we converted a small amount of Ag+ on the surfaces of AgCl particles into single-atom Ag(0) (SAAg). SAAg was characterized with high-angle annular dark field aberration corrected (HAADF AC)-STEM and quantified with electron spin resonance (ESR). The obtained AgEG/Mg(OH)2 material was efficient and afforded excellent selectivity control between hydrodehalogenation and deiodination-borylation under visible light irradiation. SAAg acted as the 1e−-reducing site of the photocatalyst and its loading is linearly correlated with the initial reaction rate. While the quantity of SAAg was only 6.0 × 10–8 mol g−1, the TOF of SAAg reached 1.4 × 104 h−1. The oxidation state of SAAg retained 0 in both the resting and the working states. This study suggests SAAg may be an effective cocatalyst in general for reductive dehalogenation of organic halides.

KW - Dehalogenation

KW - Organic halide

KW - Plasmonic photocatalysts

KW - Single atom catalysis

KW - Visible light

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An advanced plasmonic photocatalyst containing silver(0) single atoms for selective borylation of aryl iodides

Abstract

Keywords

ASJC Scopus subject areas

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