Acetonitrile-assisted exfoliation of layered grey and black arsenic: contrasting properties. Issue 3 (27th February 2020)

• Record Type: Journal Article
• Authors: Antonatos, Nikolas; Mazánek, Vlastimil; Lazar, Petr; Sturala, Jiri; Sofer, Zdeněk
• Is Part Of: Nanoscale advances. Volume 2:Issue 3(2020)
• Page Start: 1282
• Page End: 1289
• Publication Date: 2020-02-27
• Subjects: 620.5
• DOI: 10.1039/c9na00754g
• Languages: English
• ISSNs: 2516-0230

Abstract

Abstract : We report herein the successful exfoliation of grey and black arsenic through shear force in acetonitrile. Both exfoliated materials displayed great photothermic effect while black arsenic was shown to be a better candidate for impedimetric volatile organic compounds sensor. Abstract : In recent years, two-dimensional monoelemental nanostructures beyond graphene have received great attention due to their outstanding properties. Out of these elements, only arsenic is known to form different allotropes with a layered structure in the bulk form. Orthorhombic arsenic, also termed "black arsenic", is a metastable form of arsenic with a structure analogous to that of black phosphorus and rhombohedral arsenic is known as "grey arsenic". Here, we compare the exfoliation of black and grey arsenic in acetonitrile in high yield forming stable colloidal solutions of exfoliated materials. Together with the exfoliation procedure, detailed structural and chemical analyses are provided and potential applications in gas sensing and photothermal absorption are demonstrated for potential future arsenic-based devices.