Formation and characterization of hydrogen boride sheets derived from MgB2 by cation exchange

Hiroaki Nishino, Takeshi Fujita, Nguyen Thanh Cuong, Satoshi Tominaka, Masahiro Miyauchi, Soshi Iimura, Akihiko Hirata, Naoto Umezawa, Susumu Okada, Eiji Nishibori, Asahi Fujino, Tomohiro Fujimori, Shin Ichi Ito, Junji Nakamura, Hideo Hosono, Takahiro Kondo

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Two-dimensional (2D) materials are promising for applications in a wide range of fields because of their unique properties. Hydrogen boride sheets, a new 2D material recently predicted from theory, exhibit intriguing electronic and mechanical properties as well as hydrogen storage capacity. Here, we report the experimental realization of 2D hydrogen boride sheets with an empirical formula of H1B1, produced by exfoliation and complete ion-exchange between protons and magnesium cations in magnesium diboride (MgB2) with an average yield of 42.3% at room temperature. The sheets feature an sp2-bonded boron planar structure without any longrange order. A hexagonal boron network with bridge hydrogens is suggested as the possible local structure, where the absence of longrange order was ascribed to the presence of three different anisotropic domains originating from the 2-fold symmetry of the hydrogen positions against the 6-fold symmetry of the boron networks, based on X-ray diffraction, X-ray atomic pair distribution functions, electron diffraction, transmission electron microscopy, photo absorption, core-level binding energy data, infrared absorption, electron energy loss spectroscopy, and density functional theory calculations. The established cation-exchange method for metal diboride opens new avenues for the mass production of several types of boron-based 2D materials by countercation selection and functionalization.

Original languageEnglish
Pages (from-to)13761-13769
Number of pages9
JournalJournal of the American Chemical Society
Volume139
Issue number39
DOIs
Publication statusPublished - 2017 Jan 1
Externally publishedYes

Fingerprint

Boron Compounds
Boron
Borides
Cations
Hydrogen
Ion exchange
Positive ions
Magnesium
Electron Energy-Loss Spectroscopy
Core levels
Electron energy loss spectroscopy
Infrared absorption
Hydrogen storage
Binding energy
Electron diffraction
Electronic properties
Ion Exchange
Distribution functions
Density functional theory
Protons

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Nishino, H., Fujita, T., Cuong, N. T., Tominaka, S., Miyauchi, M., Iimura, S., ... Kondo, T. (2017). Formation and characterization of hydrogen boride sheets derived from MgB2 by cation exchange. Journal of the American Chemical Society, 139(39), 13761-13769. https://doi.org/10.1021/jacs.7b06153

Formation and characterization of hydrogen boride sheets derived from MgB2 by cation exchange. / Nishino, Hiroaki; Fujita, Takeshi; Cuong, Nguyen Thanh; Tominaka, Satoshi; Miyauchi, Masahiro; Iimura, Soshi; Hirata, Akihiko; Umezawa, Naoto; Okada, Susumu; Nishibori, Eiji; Fujino, Asahi; Fujimori, Tomohiro; Ito, Shin Ichi; Nakamura, Junji; Hosono, Hideo; Kondo, Takahiro.

In: Journal of the American Chemical Society, Vol. 139, No. 39, 01.01.2017, p. 13761-13769.

Research output: Contribution to journalArticle

Nishino, H, Fujita, T, Cuong, NT, Tominaka, S, Miyauchi, M, Iimura, S, Hirata, A, Umezawa, N, Okada, S, Nishibori, E, Fujino, A, Fujimori, T, Ito, SI, Nakamura, J, Hosono, H & Kondo, T 2017, 'Formation and characterization of hydrogen boride sheets derived from MgB2 by cation exchange', Journal of the American Chemical Society, vol. 139, no. 39, pp. 13761-13769. https://doi.org/10.1021/jacs.7b06153
Nishino, Hiroaki ; Fujita, Takeshi ; Cuong, Nguyen Thanh ; Tominaka, Satoshi ; Miyauchi, Masahiro ; Iimura, Soshi ; Hirata, Akihiko ; Umezawa, Naoto ; Okada, Susumu ; Nishibori, Eiji ; Fujino, Asahi ; Fujimori, Tomohiro ; Ito, Shin Ichi ; Nakamura, Junji ; Hosono, Hideo ; Kondo, Takahiro. / Formation and characterization of hydrogen boride sheets derived from MgB2 by cation exchange. In: Journal of the American Chemical Society. 2017 ; Vol. 139, No. 39. pp. 13761-13769.
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