Results 11 to 20 of about 6,096 (215)

C-TiO₂+Ni and ZnO+Ni Magnetic Photocatalyst Powder Synthesis by Reactive Magnetron Sputtering Technique and Their Application for Bacteria Inactivation

Inorganics, 2023
In the current study, a bi-layered magnetic photocatalyst powder consisting of a Ni layer on one side and carbon-doped TiO2 or ZnO photocatalyst layers on the other side was synthesized by magnetron sputtering technique.
Martynas Lelis, Simona Tuckute, Marius Urbonavicius, Sarunas Varnagiris, Sandra Sakalauskaite, Rimantas Daugelavicius   +5 more
doaj   +1 more source

Reassessing the role of magnetite during natural hydrogen generation

Frontiers in Earth Science, 2023
Interactions between water and ferrous rocks are known to generate natural H2 in oceanic and continental domains via the oxidation of iron. Such generation has been mainly investigated through the alteration of Fe2+-silicate and some Fe2+-carbonates.
Ugo Geymond, Ugo Geymond, Théo Briolet, Théo Briolet, Valentine Combaudon, Valentine Combaudon, Olivier Sissmann, Isabelle Martinez, Mathieu Duttine, Isabelle Moretti   +9 more
doaj   +1 more source

Characterization technique of gases permeation properties in polymers: H2, He, N2 and Ar gas

Scientific Reports, 2022
We demonstrate a simple experimental technology for characterizing the gas permeation properties of H2, He, N2 and Ar absorbed in polymers. This is based on the volumetric measurement of released gas and an upgraded diffusion analysis program after high ...
Jae Kap Jung, Ji Hun Lee, Jin Sub Jang, Nak Kwan Chung, Chang Young Park, Un Bong Baek, Seung Hoon Nahm   +6 more
doaj   +1 more source

Comment on “Natural Bond Orbitals and the Nature of the Hydrogen Bond” [PDF]

The Journal of Physical Chemistry A, 2018
We reply to the recent comments of Prof. A. J. Stone in this Journal [J. Phys. Chem. A 2017, 121, 1531-1534].
F. Weinhold, E. D. Glendening
openaire   +2 more sources

An Attempt to Study Natural H₂ Resources across an Oceanic Ridge Penetrating a Continent: The Asal–Ghoubbet Rift (Republic of Djibouti)

Geosciences, 2021
Dihydrogen (H2) is generated by fluid–rock interactions along mid-ocean ridges (MORs) and was not, until recently, considered as a resource. However, in the context of worldwide efforts to decarbonize the energy mix, clean hydrogen is now highly sought ...
Gabriel Pasquet, Rokiya Houssein Hassan, Olivier Sissmann, Jacques Varet, Isabelle Moretti   +4 more
doaj   +1 more source

The quantum nature of hydrogen

International Reviews in Physical Chemistry, 2019
Hydrogen is the most abundant element in the universe. It is also the lightest and as such the most quantum of the elements, in the sense that quantum tunnelling, quantum delocalisation, and zero-point motion can be important. For practical reasons most computer simulations of materials have not taken such effects into account, rather they have treated
Fang, W, Chen, J, Feng, Y, Li, X-Z, Michaelides, A   +4 more
openaire   +4 more sources

Subduction and Hydrogen Release: The Case of Bolivian Altiplano

Geosciences, 2023
Natural hydrogen is known to be generated in the crust by water/rock interactions, especially the oxidation of iron-rich rock or radiolysis. However, other sources, especially deeper ones, exist. In the context of subduction, the dehydration of the slab,
Isabelle Moretti, Patrice Baby, Paola Alvarez Zapata, Rosmar Villegas Mendoza   +3 more
doaj   +1 more source

Nature of the metallization transition in solid hydrogen [PDF]

Physical Review B, 2017
We present an accurate study of the static-nucleus electronic energy band gap of solid molecular hydrogen at high pressure. The excitonic and quasiparticle gaps of the $C2/c$, $Pc$, $Pbcn$, and $P6_3/m$ structures at pressures of 250, 300, and 350~GPa are calculated using the fixed-node diffusion quantum Monte Carlo (DMC) method. The difference between
Azadi, S, Drummond, ND, Foulkes, WMC
openaire   +5 more sources

An International Review of Hydrogen Technology and Policy Developments, with a Focus on Wind- and Nuclear Power-Produced Hydrogen and Natural Hydrogen

Energies
The potential for hydrogen to reshape energy systems has been recognized for over a century. Yet, as decarbonization priorities have sharpened in many regions, three distinct frontier areas are critical to consider: hydrogen produced from wind; hydrogen ...
Kathleen Araújo, Edward Potter, Anna Kouts, Oliver Newman, Max Milarvie, Fred Carcas, Cassie Koerner, Jacob Placido   +7 more
doaj   +1 more source

Implications of Cation Interdiffusion between Double Perovskite Cathode and Proton-Conducting Electrolyte for Performance of Solid Oxide Fuel Cells

Energies, 2023
Chemical compatibility and cation interdiffusion between the double perovskite cobaltites RBaCo2O6−δ (R = Gd, Pr) and proton-conducting electrolyte BaZr0.8Y0.2O3−δ were studied.
Nadezhda S. Tsvetkova, Dmitry A. Malyshkin, Ivan L. Ivanov, Dmitry S. Tsvetkov, Andrey Yu. Zuev   +4 more
doaj   +1 more source