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Related papers: OH$^-$-Enhanced Alkaline Hydrogen Evolution Reacti…

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In the present work we show, how a high pressure hydrogenation of commercial anatase or anatase/rutile powder can create a photocatalyst for hydrogen evolution that is highly effective and stable without the need of any additional…

Layered double-hydroxides (LDHs) are superior to the conventional (Transition Metal Oxides) TMOs as their lamellar morphology accommodates higher active sites contributing to the facile electron transfer towards the material degradation…

The electronic and magnetic properties of the new hydride superconductor CaFeAsH, which superconducts up to 47 K when electron-doped with La, and the isovalent alloy system CaFeAsH$_{1-x}$F$_x$ are investigated using density functional…

Strongly Correlated Electrons · Physics 2016-06-09 Y. N. Huang , D. Y. Liu , L. J. Zou , W. E. Pickett

The interaction between hydrogen atoms and carbon nanoparticles is a fundamental process governing the properties of carbonaceous materials in environments ranging from combustion systems to the interstellar medium. This study investigates…

In this article, we report experimental and semi analytical findings to elucidate the electrohydrodynamics EHD of a dielectric liquid droplet impact on superhydrophobic SH and hydrophilic surfaces. A wide range of Weber numbers We and…

Fluid Dynamics · Physics 2024-06-19 Nilamani Sahoo , Devranjan Samanta , Purbarun Dhar

Large scale production of hydrogen by electrochemical water splitting is considered as a promising technology to address critical energy challenges caused by the extensive use of fossil fuels. Although nonprecious nickel-based catalysts…

Chemical Physics · Physics 2021-08-31 Yuting Luo , Zhiyuan Zhang , Fengning Yang , Jiong Li , Zhibo Liu , Wencai Ren , Shuo Zhang , Bilu Liu

It is known that a higher concentration of free carriers leads to a higher oxide growth rate in the thermal oxidation of silicon. However, the role of electrons and holes in oxidation chemistry is not clear. Here, we report real-time…

Materials Science · Physics 2015-05-20 Bilal Gokce , David E. Aspnes , Gerald Lucovsky , Kenan Gundogdu

Interstellar complex organic molecules (COMs) are commonly observed during star formation, and are proposed to form through radical chemistry in icy grain mantles. Reactions between ions and neutral molecules in ices may provide an…

Instrumentation and Methods for Astrophysics · Physics 2016-10-05 Jennifer B. Bergner , Karin I. Oberg , Mahesh Rajappan , Edith C. Fayolle

Alkaline electrolyte solutions are important components in rechargeable batteries and alkaline fuel cells. As the ionic conductivity is thought to be a limiting factor in the performance of these devices, which are often operated at…

We used modified Arrhenius approximations to analyze the known temperature dependences (TDs) of water microstructure parameters and its dynamic characteristics. The analysis of activation energies showed a significant difference in the…

Chemical Physics · Physics 2021-06-30 Alexander Kholmanskiy

The paper presents a theoretical study of the dynamics of the H + HCl system on the potential energy surface (PES) of Bian and Werner (Bian, W.; Werner, H. -J., J. Chem. Phys. 2000, 112, 220). A time-dependent wave packet approach was…

Chemical Physics · Physics 2016-09-28 Li Yao , Ke-Li Han , He-Shan Song , Dong-Hui Zhang

The mechanism of ionization of helium droplets has been investigated in numerous reports but one observation has not found a satisfactory explanation: How are $He^+$ ions formed and ejected from undoped droplets at electron energies below…

Atomic and Molecular Clusters · Physics 2016-11-30 Michael Renzler , Matthias Daxner , Nikolaus Weinberger , Stephan Denifl , Paul Scheier , Olof Echt

Numerous experiments have demonstrated that many classes of organic reactions exhibit increased reaction rates when performed in heterogeneous water emulsions. Despite enormous practical importance of the observed "on-water" catalytic…

Chemical Physics · Physics 2015-04-21 Kristof Karhan , Rustam Z. Khaliullin , Thomas D. Kühne

Absolute cross sections are measured for charge-exchange, ionization, and excitation within the same experimental setup for the Li$^{+}-$Ar, K$^{+}-$ Ar, and Na$^{+}-$ He collisions in the ion energy range $0.5-10$ keV. Results of our…

This paper reports experiments investigating the reaction of H$_{2}$ with uranium metal-oxide bilayers. The bilayers consist of $\leq$ 100 nm of epitaxial $\alpha$-U (grown on a Nb buffer deposited on sapphire) with a UO$_{2}$ overlayer of…

Materials Science · Physics 2018-03-14 J. Ed Darnbrough , R. M. Harker , I Griffiths , D. Wermeille , G. H. Lander , R. Springell

Employing high-vacuum electrospray deposition and scanning tunneling microscopy, we investigated how individual poly(3-hexylthiophene) (P3HT) chains navigated on the periodic energy landscape of a reconstructed Au(111) surface. The…

Hydroxide ion transport in anion-exchange membranes fundamentally limits the efficiency of alkaline water electrolysis for green hydrogen production, yet the atomic-scale transport mechanisms remain poorly understood due to the…

Water is abundantly present in the Universe. It is the main component of interstellar ice mantles and a key ingredient for life. Water in space is mainly formed through surface reactions. Three formation routes have been proposed in the…

Solar and Stellar Astrophysics · Physics 2017-08-23 H. M. Cuppen , S. Ioppolo , C. Romanzin , H. Linnartz

The formation of the UV OH spectral lines has been investigated for a range of stellar parameters in the light of 3D hydrodynamical model atmospheres. The low atmospheric temperatures encountered at low metallicities compared with the…

Astrophysics · Physics 2009-11-06 M. Asplund , A. E. Garcia Perez

The present density functional theory study addresses the question whether the presence of H2O influences the catalytic activity of small gold clusters, Au1-4/MgO(100), towards the oxidation of carbon monoxide. To this end, we studied the…

Mesoscale and Nanoscale Physics · Physics 2011-08-24 Martin Amft , Natalia V. Skorodumova
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