Boridene: Two-dimensional Mo4/3B2-x with ordered metal vacancies obtained by chemical exfoliation 2021 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 373, no 6556, p. 801-+Article in journal (Refereed) Published

Abstract [en]

Extensive research has been invested in two-dimensional (2D) materials, typically synthesized by exfoliation of van der Waals solids. One exception is MXenes, derived from the etching of constituent layers in transition metal carbides and nitrides. We report the experimental realization of boridene in the form of single-layer 2D molybdenum boride sheets with ordered metal vacancies, Mo4/3B2-xTz (where T-z is fluorine, oxygen, or hydroxide surface terminations), produced by selective etching of aluminum and yttrium or scandium atoms from 3D in-plane chemically ordered (Mo2/3Y1/3)(2)AlB2 and (Mo2/3Sc1/3)(2)AlB2 in aqueous hydrofluoric acid. The discovery of a 2D transition metal boride suggests a wealth of future 2D materials that can be obtained through the chemical exfoliation of laminated compounds.

Place, publisher, year, edition, pages

AMER ASSOC ADVANCEMENT SCIENCE , 2021. Vol. 373, no 6556, p. 801-+

National Category

Inorganic Chemistry

Identifiers

URN: urn:nbn:se:liu:diva-178467DOI: 10.1126/science.abf6239ISI: 000684572100046PubMedID: 34385398OAI: oai:DiVA.org:liu-178467DiVA, id: diva2:1586931

Note

Funding Agencies|Knut and Alice Wallenberg (KAW) FoundationKnut & Alice Wallenberg Foundation [KAW 2020.0033]; Swedish Foundation for Strategic Research (SSF)Swedish Foundation for Strategic Research [EM16-0004]; KAW Foundation; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21805295]; SSF through the Research Infrastructure Fellow program [RIF 14-0074]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (faculty grant SFO-Mat-LiU) [2009 00971]; Swedish Research CouncilSwedish Research CouncilEuropean Commission [2018-05973]

Available from: 2021-08-23 Created: 2021-08-23 Last updated: 2021-08-23

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