Chemical stability of hydrogen boride nanosheets in water

Rojas, Kurt Irvin M.; Cuong, Nguyen Thanh; Nishino, Hiroji; Ishibiki, Ryota; Ito, Shin‐ichi; Miyauchi, Masahiro; Fujimoto, Yoshitaka; Tominaka, Satoshi; Okada, Susumu; Hosono, Hideo; Arboleda, Nelson B.; Kondo, Takahiro; Morikawa, Yoshitada; Hamada, Ikutaro

doi:10.1038/s43246-021-00184-5

Cited by 26 publications

(37 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They were among the first synthesized hydrogenated borophenes (borophanes) [ 1 ]. Boron atoms form a hexagonal 2D network in HB sheets, wherein hydrogen atoms are bound to boron atoms by three-center two-electron (B–H–B) and two-center two-electron (B–H) bonds [ 2 ], with chemical stability against water [ 3 ]. HB sheets have been experimentally verified to exhibit excellent solid acid catalytic activity [ 4 , 5 ] and highly sensitive gas-sensing capability [ 2 ], as well as semimetal electronic [ 6 ], light-responsive hydrogen release [ 7 ], and carbon dioxide adsorption and conversion properties [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Highly Dispersed Ni Nanoclusters Spontaneously Formed on Hydrogen Boride Sheets

et al. 2022

Self Cite

View full text Add to dashboard Cite

Hydrogen boride (HB) sheets are two-dimensional materials comprising a negatively charged hexagonal boron network and positively charged hydrogen atoms with a stoichiometric ratio of 1:1. Herein, we report the spontaneous formation of highly dispersed Ni nanoclusters on HB sheets. The spontaneous reduction reaction of Ni ions by the HB sheets was monitored by in-situ measurements with an ultraviolet-visible spectrometer. Acetonitrile solutions of Ni complexes and acetonitrile dispersions of the HB sheets were mixed in several molar ratios (the HB:Ni molar ratio was varied from 100:0.5 to 100:20), and the changes in the absorbance were measured over time. In all cases, the results suggest that Ni metal clusters grow on the HB sheets, considering the increase in absorbance with time. The absorbance peak position shifts to the higher wavelength as the Ni ion concentration increases. Transmission electron microscopy images of the post-reaction products indicate the formation of Ni nanoclusters, with sizes of a few nanometers, on the HB sheets, regardless of the preparation conditions. These highly dispersed Ni nanoclusters supported on HB sheets will be used for catalytic and plasmonic applications and as hydrogen storage materials.

show abstract

Section: Introductionmentioning

confidence: 99%

Highly Dispersed Ni Nanoclusters Spontaneously Formed on Hydrogen Boride Sheets

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, the catalytic activities of subnanometric catalysts cannot be estimated from the bulk database. Recently, new boronbased two-dimensional materials have been intensively studied [177][178][179][180][181][182][183][184]. These materials may be new options to control support effects.…”

Section: Discussionmentioning

confidence: 99%

Chemical modification of graphene for atomic-scale catalyst supports

Kunisada

Sakaguchi

2022

Nano Ex.

View full text Add to dashboard Cite

One promising way to reduce the use of noble metal catalysts is to use extremely fine particle catalysts, such as subnanoclusters and single-atom catalysts. For practical use, suppression of diffusion and agglomeration of catalysts are needed. Heteroatom-doped graphene, which has high specific surface area, high chemical and mechanical stabilities, high electrical and thermal conductivities, and contains anchoring sites for catalysts, is promising catalyst support. Heteroatom-doped graphene can widely control the support effects. This review summarizes recent dopant structure characterization using spectroscopy and density functional theory calculations. The distribution of highly-dispersed metal catalysts and their diffusion properties are discussed. In addition, The effects of environmental conditions on catalyst dynamic behaviors are introduced. Finally, the outlook of heteroatom-doped graphene and new two-dimensional material supports is discussed.

show abstract

“…Lastly, we mention the potential for other applications. The hexagonal HB has been studied for applications as catalysts [ 58 , 59 , 60 , 61 , 62 ] and hydrogen storage [ 63 , 64 ]. As a catalyst, an ethanol–ethylene conversion mechanism on the HB sheet has been studied in [ 59 ].…”

Section: Experiments and Applicationsmentioning

confidence: 99%

Electronic Structures of Polymorphic Layers of Borophane

2022

View full text Add to dashboard Cite

The search for free-standing 2D materials has been one of the most important subjects in the field of studies on 2D materials and their applications. Recently, a free-standing monolayer of hydrogenated boron (HB) sheet has been synthesized by hydrogenation of borophene. The HB sheet is also called borophane, and its application is actively studied in many aspects. Here, we review recent studies on the electronic structures of polymorphic sheets of borophane. A hydrogenated boron sheet with a hexagonal boron frame was shown to have a semimetallic electronic structure by experimental and theoretical analyses. A tight-binding model that reproduces the electronic structure was given and it allows easy estimation of the properties of the material. Hydrogenated boron sheets with more complicated nonsymmorphic boron frames were also analyzed. Using the symmetry restrictions from the nonsymmorphic symmetry and the filling factor of hydrogenated boron sheets, the existence of a Dirac nodal line was suggested. These studies provide basic insights for research on and device applications of hydrogenated boron sheets.

show abstract

Chemical stability of hydrogen boride nanosheets in water

Cited by 26 publications

References 50 publications

Highly Dispersed Ni Nanoclusters Spontaneously Formed on Hydrogen Boride Sheets

Highly Dispersed Ni Nanoclusters Spontaneously Formed on Hydrogen Boride Sheets

Chemical modification of graphene for atomic-scale catalyst supports

Electronic Structures of Polymorphic Layers of Borophane

Contact Info

Product

Resources

About