Adsorption and Catalytic Activation of the Molecular Oxygen on the Metal Supported h-BN

Lyalin, Andrey; Nakayama, Akira; Uosaki, Kohei; Taketsugu, Tetsuya

doi:10.1007/s11244-014-0267-7

Cited by 32 publications

(39 citation statements)

References 74 publications

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“…This is in agreement with DFT calculations in literature [29,30,45] ,w hich find that this is the most stable bonding configuration for oxygen adsorbed on h-BN. This speciesw as until now not investigated experimentally,c onsidering that the adsorptioni sa na ctivated process and the relevant activation barrier can only be overcome by using as upersonic molecular beam of molecular oxygen, in our case with ak inetic energy of 0.7 eV.F rom our combined XPS, NEXAFS and UPS results, we conclude that the adsorbed speciesi samolecular rather than in an atomics tate.…”

Section: Discussionsupporting

confidence: 92%

“…[27] When focusing on the oxygen chemistryo fr elated materials, bulk functionalization of graphite yieldingg raphene oxide (GO) was investigated in detail. [29][30][31][32] This substrate is especially interesting, considering that h-BN forms af lat, uniform single layer due to an early perfect lattice match to the substrate. However,G Oa nd reduced GO often have quite different properties than graphened ue to the incorporated oxygen and to ah igh defect density.F or h-BN, theoretical studies show that oxygen functionalizations hould also be possible, in particularw hen supportedo nN i(111).…”

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confidence: 99%

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Oxygen Functionalization of Hexagonal Boron Nitride on Ni(111)

Späth

Soni

Steinhauer

et al. 2019

Chemistry A European J

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The interaction of single-layer hexagonal boron nitride (h-BN) on Ni(111)w ith molecular oxygen from as upersonic molecular beam led to ac ovalently bonded molecular oxygen species, which was identified as being between as uperoxide and aperoxide. This is arareexample of an activated adsorption process leadingt oam olecular adsorbate. The amount of oxygen functionalization depended on the kinetic energy of the molecular beam.F or ak inetic energy of 0.7 eV,a no xygen coverage of 0.4 ML was found. Near-edge X-ray adsorption fine structure (NEXAFS) spectroscopy revealed as tronger bond of h-BN to the Ni(111)s ubstrate in [a] Dr.

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Section: Discussionsupporting

confidence: 92%

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confidence: 99%

Oxygen Functionalization of Hexagonal Boron Nitride on Ni(111)

Späth

Soni

Steinhauer

et al. 2019

Chemistry A European J

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“…When h-BN nanosheets contact with each other, a depletion layer emerges at the junction interface due to the surface defects of the material. [39][40][41] Under the dark condition, the barrier at the h-BN nanosheet-nanosheet interface due to the depletion layer will hinder carrier transport in the device, dominating the transport of the overlapping nanosheets. This leads to a very low dark current in the BN paper PD.…”

Section: Resultsmentioning

confidence: 99%

A flexible solar-blind 2D boron nitride nanopaper-based photodetector with high thermal resistance

Lin

Cheng

et al. 2018

npj 2D Mater Appl

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Flexible electronics are expected to play a key role in connecting human lives with versatile smart electronic devices due to their adaptability to different shapes, surfaces, and even the human body. However, heat management issues found in most flexible devices due to the low thermal conductivity of conventional plastic or paper substrates become significant for large-scale integration or high-temperature applications. In this study, we employed high thermal conductivity nanopaper composed of twodimensional (2D) hexagonal boron nitride nanosheets and one-dimensional nanofibrillated cellulose to form a flexible deepultraviolet photodetector demonstrating superior photodetectivity of up to 8.05 × 10 10 cm Hz 1/2 /W, a short response time of 0.267 s, and excellent flexible durability featuring repeatable ON/OFF photoswitching over 200 bending cycles. Because the boron nitride paper has a high thermal conductivity of 146 W/mK, which is three orders of magnitude larger than plastic or paper substrates, the photodetectors can work at high temperatures of up to 200°C. The boron nitride paper-based strategy described herein suggests a path for improving heat dissipation in flexible electronics and achieving high-performance deep-ultraviolet photodetectors, which can be applied in wearable applications.

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“…For the BNNF/Cu(111) interface, the most stable configuration is that N atoms sit on top of Cu atoms with an N-Cu distance of 2.94 Å, while B atoms are located on top of the facecentered-cubic (fcc) hollow sites, which agrees with the theoretical studies. [34,35] Transition metal support can considerably modify the chemical properties of inert monolayer BN due to the mixing between metal-d and BN-p orbitals, and electron sharing at the BN-metal interface. [34][35][36][37][38][39][40] Our DFT calculations show weaker interactions between a water molecule and the terrace of BN/Cu(111) compared to that with the pure Cu(111) surface.…”

Section: (3 Of 7) 1603937mentioning

confidence: 99%

Atomically Thin Hexagonal Boron Nitride Nanofilm for Cu Protection: The Importance of Film Perfection

et al. 2016

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Coatings are routinely applied to protect metallic surfaces, and polymer coatings have been conventionally used where the thickness is not a dramatic issue.[1] For the next generation of nanoelectronics, nanoscale coatings are needed to accommo-date the compact design. 2D materials that can be fabricated into atomically thin film as a coating over the substrate can be a great choice. Graphene has recently been considered for this purpose, since it is robust and flexible, and the hexagonal hon-eycomb structure can effectively block any species, including helium.[2] Mixed results, however, have been reported. [3][4][5][6][7] Good short-term anticorrosion performance was observed, [3][4][5] but over time, accelerated Cu oxidation and corrosion in air were found in the presence of graphene compared to the bare Cu substrate. [8,9] This acceleration is likely due to the high con-ductivity that assists electron transfer in the two-component galvanic cell between Cu and graphene, facilitating oxygen reduction and Cu oxidation around the defects in the long run. Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsKhan, M. Haque., Jamali, S. S., Lyalin, A., Molino, P. J., Jiang, L., Liu, H. Kun., Taketsugu Coatings are routinely applied to protect metallic surfaces, and polymer coatings have been conventionally used where the thickness is not a dramatic issue. [1] For the next generation of nano-electronics, nanoscale coatings are needed to accommodate the compact design. Twodimensional (2D) materials that can be fabricated into atomically thin film as a coating over the substrate can be a great choice. Graphene has recently been considered for this purpose, Submitted to 2 since it is robust and flexible, and the hexagonal honeycomb structure can effectively block any species, including helium. [2] Mixed results, however, have been reported. [3][4][5][6][7] Good shortterm anti-corrosion performance was observed, [3][4][5] but over time, accelerated Cu oxidation and corrosion in air were found in the presence of graphene compared to the bare Cu substrate. [8,9] This acceleration is likely due to the high conductivity that assists electron transfer in the two-component galvanic cell between Cu and graphene, facilitating oxygen reduction and Cu oxidation around the defects in the long run.Hexagonal boron nitride could, therefore, be considered for protection due to its insulating nature, [10][11][12][13] impermeability to small molecules (pore diameter 1.2 Å in the hexagon [14] ), robustness [15] , and transparency. [16] Moreover, it has excellent chemical stability in most aquatic environments. [17,18] Hexagonal boron nitride film (BNNF) (7−8 nm thick, ~20 layers) has been reported to slow down the corrosion of an underlying Cu substrate in a very dilute NaCl solution (0.1 M) for a few minutes. [19] BNNF (5 nm, i.e. ~15 layers, grown on Ni and then transferred to Cu) also improved the oxidation resistance of Cu substrate at 500 °C for 30 minutes. [20] As was learned from the case of graphe...

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Adsorption and Catalytic Activation of the Molecular Oxygen on the Metal Supported h-BN

Cited by 32 publications

References 74 publications

Oxygen Functionalization of Hexagonal Boron Nitride on Ni(111)

Oxygen Functionalization of Hexagonal Boron Nitride on Ni(111)

A flexible solar-blind 2D boron nitride nanopaper-based photodetector with high thermal resistance

Atomically Thin Hexagonal Boron Nitride Nanofilm for Cu Protection: The Importance of Film Perfection

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