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Data associated with "Sub-Nanometer Thick Gold Nanosheets as Highly-efficient Catalysts"

Ye, Sunjie and Brown, Andy P. and Stammers, Ashley C. and Thomson, Neil H. and Roach, Lucien and Bushby, Richard J. and Coletta, P. Louise and Critchley, Kevin and Connell, Simon D. and Markham, Alexander F. and Brydson, Rik and Evans, Stephen D. (2018) Data associated with "Sub-Nanometer Thick Gold Nanosheets as Highly-efficient Catalysts". University of Leeds. [Dataset]

Dataset description

Two-dimensional metal nanomaterials offer exciting prospects in terms of their properties and functions. However, the ambient aqueous synthesis of atomically-thin, two-dimensional (2D) metallic nanomaterials represents a significant challenge. Herein, freestanding and atomically-thin gold nanosheets with a thickness of only 0.47 nm (two atomic layers thick) were synthesized via a one-step aqueous approach at 20°C, using Methyl Orange as a confining agent. Owing to the high surface-area-to-volume ratio, abundance of unsaturated atoms exposed on the surface and large interfacial areas arising from their ultrathin 2D nature, the as-prepared Au nanosheets demonstrate excellent catalysis performance in the model reaction of 4-nitrophenol reduction, and remarkable peroxidase-mimicking activity which enables a highly-sensitive colorimetric sensing of H2O2 with a detection limit of 0.11 µM. This work represents the first fabrication of freestanding 2D gold with a sub-nanometer thickness, opens up an innovative pathway towards atomically-thin metal nanomaterials that can serve as model systems for inspiring fundamental advances in materials science, and hold potential across a wide region of applications.

Keywords: 2D, catalysis, gold nanomaterials, nanoenzymes, sub‐nanometer
Subjects: F000 - Physical sciences > F200 - Materials science
Divisions: Faculty of Engineering and Physical Sciences > School of Physics and Astronomy
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License: Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited: 06 Aug 2019 09:15




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