Results 21 to 30 of about 235,631 (302)

NANOSTRUCTURAL PROCESSES OF MELTING AND MOULDING OF CAST IRON WITH GLOBULAR GRAPHITE

open access: yesЛитьë и металлургия, 2017
It is shown that melting and molding of cast iron with globular graphite are complex physical and chemical nanostructural processes. The major role in these processes is played by the centers of crystallization of dendrites of graphite, graphite ...
E. I. Marukovich, V. Yu. Stetsenko
doaj   +1 more source

Chemical oxygen species on electrocatalytic materials during oxygen evolution reaction

open access: yesMaterials Today Catalysis, 2023
Oxygen evolution reaction (OER) is a crucial half-reaction in electrochemical water splitting, and efficient and durable electrocatalysts are required to improve the sluggish OER kinetics.
Yaming Hao   +5 more
doaj   +1 more source

Study program to develop and evaluate die and container materials for the growth of silicon ribbons [PDF]

open access: yes, 1979
The development and evaluation of proprietary coatings of pure silicon carbide, silicon nitride, and aluminum nitride on less pure hot pressed substrates of the respective ceramic materials, is described.
Addington, L. A.   +5 more
core   +2 more sources

Surface Study of Fe3O4 Nanoparticles Functionalized With Biocompatible Adsorbed Molecules

open access: yesFrontiers in Chemistry, 2019
Surfaces of iron oxide of ferrimagnetic magnetite (Fe3O4) nanoparticles (MNPs) prepared by Massart's method and their functionalized form (f-MNPs) with succinic acid, L-arginine, oxalic acid, citric acid, and glutamic acid were studied by dynamic light ...
Beata Lesiak   +7 more
doaj   +1 more source

Study on Water Wettability Mechanism of Pyrite and Coal Surfaces Based on Density Functional Theory

open access: yesKuangchan zonghe liyong, 2022
Flotation is based on the difference of wettability of mineral surfaces. In order to study the water wettability mechanism of pyrite and coal surfaces, pyrite and perfect coal surface models were constructed. The adsorptions of water and oxygen molecules
Chengyong Wang   +3 more
doaj   +1 more source

Structure of adsorbed organometallic rhodium: model single atom catalysts [PDF]

open access: yes, 2007
We have determined the structure of a complex rhodium carbonyl chloride [Rh(CO)(2)Cl] molecule adsorbed on the TiO2 (110) surface by the normal incidence x-ray standing wave technique.
Basham, Mark   +4 more
core   +1 more source

Kinetics of electronic spectra of surface of india with adsorbed oxygen [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2018
The spectra of Auger and plasmon losses of polycrystalline indium before and after aging in an oxygen medium have been studied. The kinetics of electronic states on the surface of indium with adsorbed layers of oxygen (exposure in an oxygen medium up to ...
M.A. Aleroev   +2 more
doaj   +1 more source

Density-functional study of oxygen adsorption on Mo(112) [PDF]

open access: yes, 2004
Atomic oxygen adsorption on the Mo(112) surface has been investigated by means of first-principles total energy calculations. Among the variety of possible adsorption sites it was found that the bridge sites between two Mo atoms of the topmost row are ...
Kiejna, Adam, Nieminen, R. M.
core   +2 more sources

Effect of Surface‐Adsorbed and Intercalated (Oxy)anions on the Oxygen Evolution Reaction

open access: yesAngewandte Chemie, 2022
AbstractAs the kinetically demanding oxygen evolution reaction (OER) is crucial for the decarbonization of our society, a wide range of (pre)catalysts with various non‐active‐site elements (e.g., Mo, S, Se, N, P, C, Si…) have been investigated. Thermodynamics dictate that these elements oxidize during industrial operation.
J. Niklas Hausmann, Prashanth W. Menezes
openaire   +3 more sources

The Role of Water-Surface Interactions of Platinum Based Catalysts in Electrochemical Methanol Oxidation

open access: yesChemical Engineering Transactions, 2014
Study focuses on the impact of potential of zero total charge (PZTC) determined with N2O reduction on different Pt-based catalysts in three important proton exchange membrane fuel cell (PEMFC) reactions, namely oxygen reduction (ORR), CO oxidation and ...
N. Hodnik
doaj   +1 more source

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