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Silver metal nano-matrixes as high efficiency and versatile catalytic reactors for environmental remediation

Dumée, Ludovic F., Yi, Zhifeng, Tardy, Blaise, Merenda, Andrea, des Ligneris, Elise, Dagastine, Ray R. and Kong, Lingxue 2017, Silver metal nano-matrixes as high efficiency and versatile catalytic reactors for environmental remediation, Scientific reports, vol. 7, pp. 1-10, doi: 10.1038/srep45112.

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Title Silver metal nano-matrixes as high efficiency and versatile catalytic reactors for environmental remediation
Author(s) Dumée, Ludovic F.ORCID iD for Dumée, Ludovic F. orcid.org/0000-0002-0264-4024
Yi, Zhifeng
Tardy, Blaise
Merenda, AndreaORCID iD for Merenda, Andrea orcid.org/0000-0002-9998-0330
des Ligneris, Elise
Dagastine, Ray R.
Kong, LingxueORCID iD for Kong, Lingxue orcid.org/0000-0001-6219-3897
Journal name Scientific reports
Volume number 7
Article ID 45112
Start page 1
End page 10
Total pages 10
Publisher Nature Publishing Group
Place of publication London, Eng.
Publication date 2017-03
ISSN 2045-2322
Summary Nano-porous metallic matrixes (NMMs) offer superior surface to volume ratios as well as enhanced optical, photonic, and electronic properties to bulk metallic materials. Such behaviours are correlated to the nano-scale inter-grain metal domains that favour the presence of electronic vacancies. In this work, continuous 3D NMMs were synthesized for the first time through a simple diffusion-reduction process whereby the aerogel matrix was functionalized with (3-Mercaptopropyl)trimethoxysilane. The surface energy of the silica monolith templates was tuned to improve the homogeneity of the reduction process while thiol functionalization facilitated the formation of a high density of seeding points for metal ions to reduce. The diameter of NMMs was between 2 and 1000 nm, corresponding to a silver loading between 1.23 and 41.16 at.%. A rates of catalytic degradation kinetics of these NMMS which is three orders of magnitude higher than those of the non-functionalized silver-silica structures. Furthermore, the enhancement in mechanical stability at nanoscale which was evaluated by Atomic Force Microscopy force measurements, electronic density and chemical inertness was assessed and critically correlated to their catalytic potential. This strategy opens up new avenues for design of complex architectures of either single or multi-metal alloy NMMs with enhanced surface properties for various applications.
Language eng
DOI 10.1038/srep45112
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2017, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30093258

Document type: Journal Article
Collections: Institute for Frontier Materials
Open Access Collection
GTP Research
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.