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Enhancing catalytic properties of ligand-protected gold-based 25-metal atom nanoclusters by silver doping

Herein, engineering metal composition of metal nanoclusters (NCs) by foreign metal doping was used as an approach to synthesize gold (Au)-based 25-metal NC catalysts, without compromising the presence of their ligands and unique structure of 25 metal atoms. The Au-based 25-metal atom NCs with silver...

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Main Authors: Nasaruddin, Ricca Rahman, Hülsey, Max J., Xie, Jianping
格式: Article
语言:English
English
出版: Elsevier 2022
主题:
QD Chemistry
TP155 Chemical engineering
在线阅读:http://irep.iium.edu.my/96763/7/96763_Enhancing%20catalytic%20properties%20of%20ligand-protected%20gold-based_SCOPUS.pdf
http://irep.iium.edu.my/96763/8/96763_Enhancing%20catalytic%20properties%20of%20ligand-protected%20gold-based%20%282%29.pdf
http://irep.iium.edu.my/96763/
https://www.sciencedirect.com/science/article/abs/pii/S2468823121007112?via%3Dihub
https://doi.org/10.1016/j.mcat.2021.112095
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spelling my.iium.irep.967632022-02-15T07:03:20Z http://irep.iium.edu.my/96763/ Enhancing catalytic properties of ligand-protected gold-based 25-metal atom nanoclusters by silver doping Nasaruddin, Ricca Rahman Hülsey, Max J. Xie, Jianping QD Chemistry TP155 Chemical engineering Herein, engineering metal composition of metal nanoclusters (NCs) by foreign metal doping was used as an approach to synthesize gold (Au)-based 25-metal NC catalysts, without compromising the presence of their ligands and unique structure of 25 metal atoms. The Au-based 25-metal atom NCs with silver doping which can also be called as bimetallic AuAg NCs (i.e., Au25-xAgx(SR)18 NCs with x = 4–12) were successfully synthesized by co-reduction method with various feeding ratios (RAu/Ag = 24/1, 22/3 and 18/7). The Ag dopants favorably replaced Au(0) atom on the vertex of the icosahedral core and enhanced the catalytic activity of bimetallic Au25-xAgx(SR)18 NCs due to combination of several factors. As compared to monometallic Au25(SR)18 NCs, Au25-xAgx(SR)18 NCs have (1) synergistic effects of Au and Ag atoms; (2) better ligands removal's and active sites exposure due to weaker Ag-SR bond than Au-SR bond based on DFT analysis; (3) weaker Ag-H than Au-H bond based on DFT analysis; and (4) better stability as smaller metal NCs during the catalytic reaction. The study reveals a wider opportunity to tailor the catalytic properties of atomically precise Au-based 25-metal atom NC by engineering its metal composition. Elsevier 2022-01-07 Article PeerReviewed application/pdf en http://irep.iium.edu.my/96763/7/96763_Enhancing%20catalytic%20properties%20of%20ligand-protected%20gold-based_SCOPUS.pdf application/pdf en http://irep.iium.edu.my/96763/8/96763_Enhancing%20catalytic%20properties%20of%20ligand-protected%20gold-based%20%282%29.pdf Nasaruddin, Ricca Rahman and Hülsey, Max J. and Xie, Jianping (2022) Enhancing catalytic properties of ligand-protected gold-based 25-metal atom nanoclusters by silver doping. Molecular Catalysis, 518. pp. 1-10. ISSN 2468-8231 https://www.sciencedirect.com/science/article/abs/pii/S2468823121007112?via%3Dihub https://doi.org/10.1016/j.mcat.2021.112095
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
English
topic QD Chemistry
TP155 Chemical engineering
spellingShingle QD Chemistry
TP155 Chemical engineering
Nasaruddin, Ricca Rahman
Hülsey, Max J.
Xie, Jianping
Enhancing catalytic properties of ligand-protected gold-based 25-metal atom nanoclusters by silver doping
description Herein, engineering metal composition of metal nanoclusters (NCs) by foreign metal doping was used as an approach to synthesize gold (Au)-based 25-metal NC catalysts, without compromising the presence of their ligands and unique structure of 25 metal atoms. The Au-based 25-metal atom NCs with silver doping which can also be called as bimetallic AuAg NCs (i.e., Au25-xAgx(SR)18 NCs with x = 4–12) were successfully synthesized by co-reduction method with various feeding ratios (RAu/Ag = 24/1, 22/3 and 18/7). The Ag dopants favorably replaced Au(0) atom on the vertex of the icosahedral core and enhanced the catalytic activity of bimetallic Au25-xAgx(SR)18 NCs due to combination of several factors. As compared to monometallic Au25(SR)18 NCs, Au25-xAgx(SR)18 NCs have (1) synergistic effects of Au and Ag atoms; (2) better ligands removal's and active sites exposure due to weaker Ag-SR bond than Au-SR bond based on DFT analysis; (3) weaker Ag-H than Au-H bond based on DFT analysis; and (4) better stability as smaller metal NCs during the catalytic reaction. The study reveals a wider opportunity to tailor the catalytic properties of atomically precise Au-based 25-metal atom NC by engineering its metal composition.
format Article
author Nasaruddin, Ricca Rahman
Hülsey, Max J.
Xie, Jianping
author_facet Nasaruddin, Ricca Rahman
Hülsey, Max J.
Xie, Jianping
author_sort Nasaruddin, Ricca Rahman
title Enhancing catalytic properties of ligand-protected gold-based 25-metal atom nanoclusters by silver doping
title_short Enhancing catalytic properties of ligand-protected gold-based 25-metal atom nanoclusters by silver doping
title_full Enhancing catalytic properties of ligand-protected gold-based 25-metal atom nanoclusters by silver doping
title_fullStr Enhancing catalytic properties of ligand-protected gold-based 25-metal atom nanoclusters by silver doping
title_full_unstemmed Enhancing catalytic properties of ligand-protected gold-based 25-metal atom nanoclusters by silver doping
title_sort enhancing catalytic properties of ligand-protected gold-based 25-metal atom nanoclusters by silver doping
publisher Elsevier
publishDate 2022
url http://irep.iium.edu.my/96763/7/96763_Enhancing%20catalytic%20properties%20of%20ligand-protected%20gold-based_SCOPUS.pdf
http://irep.iium.edu.my/96763/8/96763_Enhancing%20catalytic%20properties%20of%20ligand-protected%20gold-based%20%282%29.pdf
http://irep.iium.edu.my/96763/
https://www.sciencedirect.com/science/article/abs/pii/S2468823121007112?via%3Dihub
https://doi.org/10.1016/j.mcat.2021.112095
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score 13.250246

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