Ultrathin Au-Alloy Nanowires at the Liquid-Liquid Interface

Chatterjee, Dipanwita and Shetty, Shwetha and Mueller-Caspary, Knut and Grieb, Tim and Krause, Florian F and Schowalter, Marco and Rosenauer, Andreas and Ravishankar, Narayanan (2018) Ultrathin Au-Alloy Nanowires at the Liquid-Liquid Interface. In: NANO LETTERS, 18 (3). pp. 1903-1907.

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Abstract

Ultrathin bimetallic nanowires are of importance and interest for applications in electronic devices such as sensors and heterogeneous catalysts. In this work, we have designed a new, highly reproducible and generalized wet chemical method to synthesize uniform and monodispersed Au-based alloy (AuCu, AuPd, and AuPt) nanowires with tunable composition using microwave-assisted reduction at the liquid liquid interface. These ultrathin alloy nanowires are below 4 nm in diameter and about 2 mu m long. Detailed microstructural characterization shows that the wires have an face centred cubic (FCC) crystal structure, and they have low energy twin-boundary and stacking-fault defects along the growth direction. The wires exhibit remarkable thermal and mechanical stability that is critical for important applications. The alloy wires exhibit excellent electrocatalytic activity for methanol oxidation in an alkaline medium.

Item Type:	Journal Article
Publication:	NANO LETTERS
Publisher:	AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Additional Information:	Copy right for the article belong to AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	12 Apr 2018 18:49
Last Modified:	12 Apr 2018 18:49
URI:	http://eprints.iisc.ac.in/id/eprint/59526

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