Extraction of Two-Dimensional Aluminum Alloys from Decagonal Quasicrystals

Yadav, TP and Woellner, CF and Sharifi, T and Sinha, SK and Qu, L-L and Apte, A and Mukhopadhyay, NK and Srivastava, ON and Vajtai, R and Galvão, DS and Tiwary, CS and Ajayan, PM (2020) Extraction of Two-Dimensional Aluminum Alloys from Decagonal Quasicrystals. In: ACS Nano, 14 (6). pp. 7435-7443.

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Abstract

Atomically thin metallic alloys are receiving increased attention due to their prospective applications as interconnects/contacts in two-dimensional (2D) circuits, sensors, and catalysts, among others. In this work, we demonstrate an easily scalable technique for the synthesis of 2D metallic alloys from their 3D quasicrystalline precursors. We have used aluminum (Al)-based single-phase decagonal quasicrystal Al66Co17Cu17 alloy to extract the corresponding 2D alloy structure. The 2D layered Al alloy possesses 2-fold decagonal quasicrystalline symmetry and consists of two- or three-layer-thick sheets with a lateral dimension of microns. These 2D metallic layers were combined with the atomic layers of tungsten disulfide to form the stacked heterostructures, which is demonstrated to be a stable and efficient catalyst for hydrogen evolution reaction.

Item Type:	Journal Article
Publication:	ACS Nano
Publisher:	American Chemical Society
Additional Information:	The copyright for this article belongs to American Chemical Society.
Keywords:	Catalysts; Cobalt alloys; Copper alloys; Quasicrystals; Sulfur compounds; Ternary alloys; Tungsten compounds, Decagonal quasicrystals; Efficient catalysts; Lateral dimension; Metallic layers; Prospective applications; Quasicrystalline; Tungsten disulfide; Two Dimensional (2 D), Aluminum alloys
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	06 Feb 2023 06:49
Last Modified:	06 Feb 2023 06:49
URI:	https://eprints.iisc.ac.in/id/eprint/79866

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