Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 46, Pages 14343-14347Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201605298
Keywords
antimonene; atomic force microscopy; liquid-phase exfoliation; Raman spectroscopy; two-dimensional materials
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Funding
- MINECO (Spain) [MDM-2014-0377, CSD2010-0024, MAT2013-46753-C2-1-P, MAT2013-46753-C2-2-P, MAT2015-66888-C3-3-R]
- UE
- European Union [604391]
- Fundacion BBVA
- European Research Council (ERC) [259286]
- DFG [SPP 1459 Graphene]
- EU [FP7/2013-IEF-627386]
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We report on a fast and simple method to produce highly stable isopropanol/water (4: 1) suspensions of few-layer antimonene by liquid-phase exfoliation of antimony crystals in a process that is assisted by sonication but does not require the addition of any surfactant. This straightforward method generates dispersions of few-layer antimonene suitable for on-surface isolation. Analysis by atomic force microscopy, scanning transmission electron microscopy, and electron energy loss spectroscopy confirmed the formation of high-quality few-layer antimonene nanosheets with large lateral dimensions. These nanolayers are extremely stable under ambient conditions. Their Raman signals are strongly thickness-dependent, which was rationalized by means of density functional theory calculations.
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