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Unveiling the oxidation behavior of liquid-phase exfoliated antimony nanosheets
,
Carlos Gibaja,
Michael Fickert,
Iñigo Torres,
Erik Weinreich,
Stefan Wolff ,
Roland Gillen ,
Janina Maultzsch,
Maria Varela,
Sherman Tan Jun Rong,
Kian Ping Loh,
Enrique G Michel,
Félix Zamora,
Gonzalo Abellán
2D Materials, Volume: 7, Issue: 2, Start page: 025039
Swansea University Author:
Roland Gillen
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DOI (Published version): 10.1088/2053-1583/ab755e
Abstract
Antimonene, a monolayer of β-antimony, is increasingly attracting considerable attention, more than that of other monoelemental two-dimensional materials, due to its intriguing physical and chemical properties. Under ambient conditions, antimonene exhibits a high thermodynamic stability and good str...
| Published in: | 2D Materials |
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| ISSN: | 2053-1583 |
| Published: |
IOP Publishing
2020
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa66663 |
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| Abstract: |
Antimonene, a monolayer of β-antimony, is increasingly attracting considerable attention, more than that of other monoelemental two-dimensional materials, due to its intriguing physical and chemical properties. Under ambient conditions, antimonene exhibits a high thermodynamic stability and good structural integrity. Some theoretical calculations predicted that antimonene would have a high oxidation tendency. However, it remains poorly investigated from the experimental point of view. In this work, we study the oxidation behavior of antimonene nanosheets (ANS) prepared by ultrasonication-assisted liquid-phase exfoliation. Using a set of forefront analytical techniques, a clear effect of sonication time on the surface chemistry of prepared ANS is found. A dynamic oxidation behavior has been observed, which upon annealing at moderate temperature (210 °C) resulted in a semiconducting behavior with a bandgap of approximately 1 eV measured by ultraviolet photoelectron spectroscopy. This study yields valuable information for future applications of antimonene and paves the way towards novel modification approaches in order to tailor its properties and complement its limitations. |
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| Keywords: |
antimonene, liquid-phase exfoliation, antimonene oxide, 2D materials |
| College: |
Faculty of Science and Engineering |
| Funders: |
The work has been supported by the European Union (ERC-2018-StG 804110-2D-PnictoChem to GA) and the Spanish MINECO (MAT201677608-C3-1-P and PCI2018-093081, Structures of Excellence Mar´ıa de Maeztu MDM-2015-0538, FIS2017-82415-R). GA acknowledges support by the Generalitat Valenciana (CIDEGENT/2018/001) and the Deutsche Forschungsgemeinschaft (DFG; FLAG-ERA AB694/2-1). JM acknowledges the support by B13 Sonderforschungsbereich (SFB) 953. MV acknowledges financial support from MINECO/FEDER grants MAT2015- 66888-C3-3R and RTI2018-097895-B-C43. Electron microscopy observations were carried out at the National Center for Electron Microscopy ICTS-ELECMI at UCM. |
| Issue: |
2 |
| Start Page: |
025039 |