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Liquid phase exfoliation of antimonene: systematic optimization, characterization and electrocatalytic properties

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Liquid phase exfoliation of antimonene: systematic optimization, characterization and electrocatalytic properties

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dc.contributor.author	Gibaja, Carlos
dc.contributor.author	Assebban, Mhamed
dc.contributor.author	Torres, Iñigo
dc.contributor.author	Fickert, Michael
dc.contributor.author	Sanchis Gual, Roger
dc.contributor.author	Brotons-Alcazar, Isaac
dc.contributor.author	Paz, Wendel S.
dc.contributor.author	Palacios, Juan José
dc.contributor.author	Michel, Enrique G.
dc.contributor.author	Abellán Sáez, Gonzalo
dc.contributor.author	Zamora, Félix
dc.date.accessioned	2020-04-28T15:34:14Z
dc.date.available	2020-09-16T04:45:06Z
dc.date.issued	2019
dc.identifier.citation	Gibaja, Carlos Assebban, Mhamed Torres, Iñigo Fickert, Michael Sanchis Gual, Roger Brotons-Alcazar, Isaac Paz, Wendel S. Palacios, Juan José Michel, Enrique G. Abellán Sáez, Gonzalo Zamora, Félix 2019 Liquid phase exfoliation of antimonene: systematic optimization, characterization and electrocatalytic properties Journal Of Materials Chemistry a 7 39 22475 22486
dc.identifier.uri	https://hdl.handle.net/10550/74104
dc.description.abstract	Antimonene, a novel group 15 two-dimensional material, is attracting great attention due to its outstanding physical and chemical properties. Despite its thermodynamic stability, the pronounced covalent character of the interlayer interactions imposes severe limitations on its exfoliation into mono- and few-layer. Here, we develop a systematic study of liquid phase exfoliation (LPE) with the aim to optimize antimonene production in terms of concentration and dimensional anisotropy, investigating the most relevant experimental factors affecting the exfoliation: pre-processing of pristine antimony, solvent selection based on Hansen solubility parameters and ultrasound conditions. Moreover, exhaustive characterization by means of turbidimetry, XRD, Raman spectroscopy, XPS, AFM, SEM, XEDS and TEM has been carried out. Indeed, we achieved concentration values of ca. 0.368 g L−1 (∼yield of 37 wt%), up to ∼30 times higher compared to the highest value so far reported, with ca. 50% of the nanolayers with heights between 2 and 10 nm and lateral dimensions in the 40-300 nm range. Furthermore, it has been demonstrated that the yield of the process can be enhanced up to ∼90 wt% by recycling the sediment to perform a maximum of 7 cycles. Moreover, we have illustrated the usefulness of this approach by characterizing the electrochemical behaviour of antimonene as a catalyst for the hydrogen evolution reaction (HER). This study provides important insights into the LPE and electrochemical properties of antimonene, allowing its large-scale production and paving the way for its application in fields of utmost importance such as energy storage and conversion or catalysis.
dc.language.iso	eng
dc.relation.ispartof	Journal Of Materials Chemistry a, 2019, vol. 7, num. 39, p. 22475-22486
dc.subject	Ciència dels materials
dc.title	Liquid phase exfoliation of antimonene: systematic optimization, characterization and electrocatalytic properties
dc.type	journal article	es_ES
dc.date.updated	2020-04-28T15:34:14Z
dc.identifier.doi	10.1039/C9TA06072C
dc.identifier.idgrec	138334
dc.embargo.terms	1 year
dc.rights.accessRights	open access	es_ES