Boridene: Two-dimensional Mo<sub>4/3</sub>B<sub>2-x</sub> with ordered metal vacancies obtained by chemical exfoliation

doi:10.1126/science.abf6239

GSTDTAP > 气候变化

DOI	10.1126/science.abf6239
	Boridene: Two-dimensional Mo_4/3B_2-x with ordered metal vacancies obtained by chemical exfoliation
	Jie Zhou; Justinas Palisaitis; Joseph Halim; Martin Dahlqvist; Quanzheng Tao; Ingemar Persson; Lars Hultman; Per O. Å. Persson; Johanna Rosen
	2021-08-13
发表期刊	Science
出版年	2021
英文摘要	A range of two-dimensional (2D) materials, including graphene and hexagonal boron nitride, have been synthesized and studied because of the unusual properties that occur when one dimension becomes very small. MXenes are a family of materials made of layers of inorganic transition metal carbides and nitrides that are a few atoms thick and are manufactured by selective etching. Attempts to make similar boridene materials have been challenging because of the reactive nature of boride phases and because the parent materials tend to dissolve rather than selectively etch. Zhou et al. synthesized boridene in the form of single-layer 2D molybdenum boride sheets by selective etching in aqueous hydrofluoric acid to produce sheets with ordered metal vacancies, opening up an additional family of materials for study. Science , abf6239, this issue p. [801][1] 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 Tz 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)2AlB2 and (Mo2/3Sc1/3)2AlB2 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. [1]: /lookup/doi/10.1126/science.abf6239
领域	气候变化 ; 资源环境
URL	查看原文
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/335887
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Jie Zhou,Justinas Palisaitis,Joseph Halim,et al. Boridene: Two-dimensional Mo_4/3B_2-x with ordered metal vacancies obtained by chemical exfoliation[J]. Science,2021.
APA	Jie Zhou.,Justinas Palisaitis.,Joseph Halim.,Martin Dahlqvist.,Quanzheng Tao.,...&Johanna Rosen.(2021).Boridene: Two-dimensional Mo_4/3B_2-x with ordered metal vacancies obtained by chemical exfoliation.Science.
MLA	Jie Zhou,et al."Boridene: Two-dimensional Mo_4/3B_2-x with ordered metal vacancies obtained by chemical exfoliation".Science (2021).