Surface binding energy and erosion coefficient on the nanoyttrium oxide under ionization irradiation

Using the conditions obtained from various simple and complex models, the energy of the surface area was calculated with the help of electronic structural transitions and thermo-sublimation approximations occurring in yttrium oxide nanoparticles irradiated with different energy deuterium ions. The depth of penetration of deuterium ions of different energies into the yttrium oxide sample, the rate of energy loss, and the energy of the surface area under the influence of temperature sublimation were determined using basic methods. In addition, the screening radius and erosion rate were determined using the Sigmund and Thomas–Fermi shielding function.

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Physical and Chemical Sputtering at Very Low Ion Energy: the Importance of the Sputtering Threshold

MRS Proceedings ◽

10.1557/proc-129-477 ◽

1988 ◽

Vol 129 ◽

Cited By ~ 4

Author(s):

Christoph Steinbruchel

Keyword(s):

Threshold Energy ◽

Surface Binding ◽

Ion Energy ◽

Chemical Sputtering ◽

Surface Binding Energy ◽

Physical Sputtering ◽

Chemical Etch ◽

Ion Energies ◽

The Difference ◽

Physical And Chemical

ABSTRACTA variety of data for physical etching (i.e. sputtering) and for ion-enhanced chemical etching of Si and SiO2 is analyzed in the very-low-ion-energy regime. Bombardment by inert ions alone, by reactive ions, and by inert ions in the presence of reactiveneutrals is considered. In all cases the etch yield follows a square root dependence on the ion energy all the way down to the threshold energy for etching. At the same time, the threshold energy has a non-negligible effect on the etch yield even at intermediate ion energies. The difference between physical and ion-enhanced chemical etch yields can be accounted for by a reduction in the average surface binding energy of the etch products and a corresponding reduction in the threshold energy for etching. These results suggest that, in general, the selectivity for ion-enhanced etch processes relative to physical sputtering can be increased significantly at low ion energy.

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Surface Binding Energy Landscapes Affect Phosphodiesterase Isoform-Specific Inhibitor Selectivity

Computational and Structural Biotechnology Journal ◽

10.1016/j.csbj.2018.11.009 ◽

2019 ◽

Vol 17 ◽

pp. 101-109 ◽

Cited By ~ 3

Author(s):

Qing Liu ◽

Andreas Herrmann ◽

Qiang Huang

Keyword(s):

Binding Energy ◽

Specific Inhibitor ◽

Energy Landscapes ◽

Surface Binding ◽

Surface Binding Energy ◽

Inhibitor Selectivity

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Cytotoxicity and genotoxicity caused by yttrium oxide nanoparticles in HEK293 cells

International Journal of Nanomedicine ◽

10.2147/ijn.s52625 ◽

2014 ◽

pp. 1379 ◽

Cited By ~ 39

Author(s):

Vellaisamy Selvaraj ◽

Sravanthi Bodapati ◽

Elizabeth Murray ◽

Eric Blough ◽

Nicole Winston ◽

...

Keyword(s):

Yttrium Oxide ◽

Hek293 Cells ◽

Oxide Nanoparticles ◽

Yttrium Oxide Nanoparticles

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Enhancement of Electrocatalytic Oxygen Evolution by Chiral Molecular Functionalization of Hybrid 2D Electrodes

10.33774/chemrxiv-2021-gmp8j ◽

2021 ◽

Author(s):

Yunchang Liang ◽

Karla Banjac ◽

Kévin Martin ◽

Nicolas Zigon ◽

Seunghwa Lee ◽

...

Keyword(s):

Binding Energy ◽

Oxygen Evolution ◽

State Of The Art ◽

Chiral Molecules ◽

Surface Binding ◽

Surface Binding Energy ◽

Energy Conversion And Storage ◽

Polarization Mechanism ◽

And Storage ◽

Unconventional Methods

A sustainable future requires highly efficient energy conversion and storage processes, where electrocatalysis plays a crucial role. The activity of an electrocatalyst is governed by the binding energy towards the reaction intermediates, while the scaling relationships prevent the improvement of a catalytic system over its volcano-plot limits. To overcome these limitations, unconventional methods that are not fully determined by the surface binding energy can be helpful. Here, we use organic chiral molecules, i.e., hetero-helicenes, to boost the oxygen evolution reaction (OER) by ca. 131.5 % (at the potential of 1.65 V vs. RHE) at state-of-the-art 2D catalysts via a spin-polarization mechanism. Our results show that chiral molecule-functionalization is able to increase the OER activity of catalysts beyond the volcano limits. A guideline for optimizing the catalytic activity via chiral molecular functionalization of hybrid 2D electrodes is given.

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Influence of pH on Structural, Morphological, Optical, Photocatalytic, and Antibacterial Properties of Yttrium Oxide Nanoparticles via Co-Precipitation Method

10.21203/rs.3.rs-385905/v1 ◽

2021 ◽

Author(s):

Kiruthika Parangusan ◽

Venkat Subramanium ◽

Lakshmanaperumal Sundarabharathi ◽

Karthik Kannan ◽

Devi Radhika

Keyword(s):

Yttrium Oxide ◽

Antibacterial Properties ◽

Blue Emission ◽

Precipitation Method ◽

Diffusion Method ◽

Bandgap Energy ◽

Oxide Nanoparticles ◽

Ph Values ◽

Co Precipitation ◽

Yttrium Oxide Nanoparticles

Abstract Yttrium oxide nanoparticles with multiform morphologies have been synthesized by the co-precipitation method. The structure, morphology, functional groups, optical and photoluminescence properties were examined through X-ray diffraction (XRD), Scanning electron microscope (SEM), Fourier transform infrared spectrometer (FTIR), UV-Visible (UV-Vis), Photoluminescence spectra (PL). The XRD patterns obtained for the samples synthesized at various pH values confirmed the cubic structure of Y2O3. The patterns obtained on the samples at pH values of 8 and 9 appeared as have sharp peaks suggested, that the samples were well crystallized. From UV-vis spectra, it revealed that the bandgap energy exhibits a blue shift in the absorption edge for the samples with the increase of pH due to their changing morphologies and surface structures. In the PL spectra, the obtained Y2O3 samples demonstrate an intense and bright UV and blue emission under the excitation wavelength range of 250 nm. The photocatalytic degradation of the Y2O3 nanostructure was studied against the Methylene blue (MB) dye under sunlight irradiation. The results showed good recital under solar light irradiation. Further, the antimicrobial activities of Y2O3 nanostructure against foodborne pathogens (Staphylococcus aureus and Salmonella typhi) were examined by using the disc diffusion method. Moreover, the Y2O3 nanostructure was found to be biocompatible.

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Atomic scale calculations of tungsten surface binding energy and beryllium-induced tungsten sputtering

Applied Surface Science ◽

10.1016/j.apsusc.2013.12.129 ◽

2014 ◽

Vol 293 ◽

pp. 187-190 ◽

Cited By ~ 13

Author(s):

Xue Yang ◽

Ahmed Hassanein

Keyword(s):

Binding Energy ◽

Atomic Scale ◽

Surface Binding ◽

Surface Binding Energy ◽

Tungsten Surface

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On the Issue of the Thermal Emission Cathode Resource on the Oxide Films of Hafnium and Zirconium

Plasma Physics and Technology Journal ◽

10.14311/ppt.2019.3.247 ◽

2019 ◽

Vol 6 (3) ◽

pp. 247-250

Author(s):

M. Klochok ◽

Y. Popil ◽

V. Chernyak ◽

V. Iukhymenko ◽

I. Fedirchyk ◽

...

Keyword(s):

Zirconium Oxide ◽

Plasma Torch ◽

Erosion Rate ◽

Thermal Emission ◽

Oxide Films ◽

Arc Plasma ◽

Depth Of Penetration ◽

Operating Life ◽

Arc Plasma Torch ◽

Emission Cathode

The article shows the results of research on the destruction of the thermionic cathode of an arc plasma torch when inserting hafnium and zirconium along the trace of the spot of a gas-discharge arc by means of electronic metallography with spectral analysis in the control region. The depth of penetration of the spot into the metal of the cathode insert was determined due to the discrete mechanism of action on the metal at the time of attachment. The erosion rate of zirconium oxide films was experimentally established, the extension of the operating life substantiated while mechanisms for its increase were revealed, and two types of arc contact with a hafnium or zirconium insert - the "contracted" and "diffused" ones - were offered. The theoretical operating life of the cathode is calculated.

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