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Tunable synthesis of ultrathin AuAg nanowires and their catalytic applications


Metal nanowires (NWs) are very interesting and important nanomaterials with unique properties and a number of potential applications. Herein we report a tunable synthesis of water soluble ultrathin AuAg NWs. Using TEM and UV-vis spectroscopy we demonstrate that these NWs can be produced by a new two-step process, which involves the formation of NW templates during an aging period and then the subsequent formation of thicker NWs by a solvent driven fusion and wetting process. Our controls studies further show that silver concentration plays a key role in the formation of these nanowires. We also demonstrate that these nanowires can effectively catalyse the reduction of 4-nitrophenol to the corresponding 4-aminophenol. Interestingly, the larger diameter ultrathin nanowires (av. 8 nm) exhibit a greater catalytic performance than the thinner nanowires (av. 3 nm). We believe that these studies are important for further development of one dimensional metal based nanomaterials, which may find a range of potential research and technological applications.

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Publication details

The article was received on 15 Nov 2018, accepted on 07 Feb 2019 and first published on 07 Feb 2019

Article type: Paper
DOI: 10.1039/C8NR09236B
Citation: Nanoscale, 2019, Accepted Manuscript

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    Tunable synthesis of ultrathin AuAg nanowires and their catalytic applications

    D. Kehoe, S. McCarthy and Y. Gun'ko, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C8NR09236B

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