Results 1 to 10 of about 235,631 (302)

Adsorbed oxygen dynamics at forced convection interface in the oxygen evolution reaction [PDF]

open access: yesNature Communications
The oxygen evolution reaction is a prevalent anodic reaction in electrocatalytic processes. Modulation of adsorbed oxygen (*O) at the electrochemical interface is an effective means to reduce the overpotential of the oxygen evolution reaction.
Zhixuan Chen   +4 more
doaj   +3 more sources

Adsorbed Oxygen Ions and Oxygen Vacancies: Their Concentration and Distribution in Metal Oxide Chemical Sensors and Influencing Role in Sensitivity and Sensing Mechanisms [PDF]

open access: yesSensors, 2022
Oxidation reactions on semiconducting metal oxide (SMOs) surfaces have been extensively worked on in catalysis, fuel cells, and sensors. SMOs engage powerfully in energy-related applications such as batteries, supercapacitors, solid oxide fuel cells ...
Engin Ciftyurek   +2 more
doaj   +2 more sources

Interaction of Oxygen Molecules with Fe Atom-Doped γ-Graphyne Surfaces: First-Principles Calculations [PDF]

open access: yesNanomaterials
The activation and dissociation of O2 molecules play a key role in the oxidation of toxic gas molecules and the oxygen reduction reaction (ORR) in hydrogen–oxygen fuel cells.
Bin Zhao   +7 more
doaj   +2 more sources

The use of 18O2 to investigate the soot oxidation process on Co3O4, Co3O4-CeO2 and CeO2 catalysts in tight contact conditions

open access: yesCatalysis Communications, 2023
The reaction mechanism of soot oxidation in tight contact conditions and that of oxygen mobility in the crystal lattices of Co3O4, Co3O4-CeO2 and CeO2 was studied.
Marek Rotko
doaj   +1 more source

A study of the kinetics of the oxidative coupling of methane over a Li/Sn/MgO catalyst [PDF]

open access: yes, 1990
The rate of reaction of methane with oxygen in the presence of a Li/Sn/MgO catalyst has been studied as a function of the partial pressures of CH4, O2 and CO2 using a well-mixed reaction system which is practically gradientless with respect to gas-phase ...
Derksen, J.W.H.C.   +5 more
core   +13 more sources

Structural bistability of the oxygen-adsorbed graphene sheet [PDF]

open access: yesJournal of Physics: Conference Series, 2008
Structural and electronic properties for oxygen-adsorbed graphene sheets have been explored using first-principles total-energy calculations within the local spin density functional theory. It has been found that the structural bistability appears with regard to the oxygen adsorption.
J Nakamura, J Ito, A Natori
openaire   +1 more source

A highly dispersed Pt/copper modified-MnO2 catalyst for the complete oxidation of volatile organic compounds: The effect of oxygen species on the catalytic mechanism

open access: yesGreen Energy & Environment, 2023
Manganese oxide (MnO2) exhibits excellent activity for volatile organic compound oxidation. However, it is currently unknown whether lattice oxygen or adsorbed oxygen is more conducive to the progress of the catalytic reaction.
Xunxun Li   +7 more
doaj   +1 more source

Quantitative Characterization of Oxygen-Containing Groups on the Surface of Carbon Materials: XPS and NEXAFS Study

open access: yesApplied Sciences, 2022
The results of the comparative quantitative study of oxygen-containing groups adsorbed on the surface of carbonized sponge scaffold (CSS), highly oriented pyrolytic graphite (HOPG), fullerite C60 and multi-walled carbon nanotubes (MWCNTs) introduced into
Danil V. Sivkov   +10 more
doaj   +1 more source

On deoxidation and modification of carbon steel

open access: yesЛитьë и металлургия, 2023
It has been shown that the elementary crystal cells of the basic products of deoxidation and modification of carbon steel, δ ferrite and austenite do not correspond to the principle of structural and dimensional correspondence of Dankov – Konobeevsky ...
E. I. Marukovich   +2 more
doaj   +1 more source

Photocatalytic reduction of CO2 over Ni-CuxO thin films towards formic acid production

open access: yesJournal of Materials Research and Technology, 2023
Copper oxide (CuO) is an abundant and low-cost material, which is active as a photocatalyst under visible light due to its narrow band gap (1.3 eV). In the present work, CuO thin films at different Ni doping amounts (5, 10, and 30 % mol) were prepared ...
Luz I. Ibarra-Rodriguez   +7 more
doaj   +1 more source

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