Results 261 to 270 of about 262,836 (345)

Catalytic Inhibition by Adsorbed Oxygen

Nature, 1970
THE effects of adsorbed oxygen on the properties of an initially clean tungsten surface have been investigated in detail by a wide range of experimental techniques. The changes in both the field emission microscope and the field ion microscope images of tungsten tips have been reported1,2, as have the changes in the low energy electron diffraction ...
R P, Gasser, P R, Vaight
openaire   +2 more sources

Unveiling the Promotion of Surface-Adsorbed Chalcogenate on the Electrocatalytic Oxygen Evolution Reaction.

Angewandte Chemie, 2020
Transition metal chalcogenides (TMCs) are efficient oxygen evolution reaction (OER) pre-electrocatalysts, and will in situ transform into metal oxyhydroxides under OER condition.
Yanmei Shi, Wei Du, Wei-ping Zhou, Changhong Wang, Shanshan Lu, Siyu Lu, Bin Zhang   +6 more
semanticscholar   +1 more source

Role of Cryptomelane in Surface-Adsorbed Oxygen and Mn Chemical Valence in MnOx during the Catalytic Oxidation of Toluene

Journal of Physical Chemistry C, 2019
A series of manganese oxide catalysts were prepared via a coprecipitation method by adjusting the molar ratio of Mn(NO3)2/KMnO4 and used to catalyze the oxidation of toluene.
Xuejun Zhang, Zi’ang Ma, Zhongxian Song, Heng Zhao, Wei Liu, Min Zhao, Jinggang Zhao   +6 more
semanticscholar   +1 more source

Highly efficient catalytic combustion of o-dichlorobenzene over lattice-distorted Ru/OMS-2: The rapidly replenishing effect of surface adsorbed oxygen on lattice oxygen

Molecular Catalysis, 2019
Cryptomelane-type catalysts (OMS-2) are known as their highly active lattice oxygen and unique structure with isolated K+ in open one dimensional (1D) tunnel.
Sai-Zhen Yang, Haijun Zhao, Fang Dong, Zhicheng Tang, F. Zha   +4 more
semanticscholar   +1 more source

What Is the Rate-Limiting Step of Oxygen Reduction Reaction on Fe-N-C Catalysts?

Journal of the American Chemical Society, 2023
Oxygen reduction reaction (ORR) is essential to various renewable energy technologies. An important catalyst for ORR is single iron atoms embedded in nitrogen-doped graphene (Fe-N-C).
Saerom Yu, Zachary H. Levell, Zhou Jiang, Xunhua Zhao, Yuanyue Liu   +4 more
semanticscholar   +1 more source

Reaction of Hydrogen with Oxygen Adsorbed on a Platinum Catalyst

Science, 1964
The release of hydrogen atoms by a platinum surface in contact with molecular hydrogen occurs if there is oxygen in the system. In particular, it is sufficient that the oxygen be adsorbed at the surface of the metal.
H W, Kohn, M, Boudart
openaire   +2 more sources

Oxygen adsorbed on oxidized Ru(0001)

Physical Review B, 1999
An atomic oxygen species adsorbed on Ru(0001) containing subsurface oxygen has been found and is characterized by the means of thermal description spectroscopy (TDS), ultraviolet photoemission spectroscopy, and reactive CO scattering. The surplus oxygen can be adsorbed on an oxygen-rich ruthenium crystal at room temperature when more than two ...
Artur Böttcher, Horst Niehus
openaire   +1 more source

Magnetism of adsorbed oxygen at low coverage

Physical Review B, 2003
We report the magnetic measurement for oxygen adsorbed on different substrates at low coverage. An intriguing behavior of the oxygen magnetization against the applied magnetic field has been found. We demonstrate that it is an interplay between the substrate orientation of oxygen molecules and a weak antiferromagnetism of unit spins occurring via the ...
Igor S. Altman, Peter V. Pikhitsa, Young-Jeong Kim, Mansoo Choi   +3 more
openaire   +1 more source

C60-adsorbed SWCNTs as metal-free, pH universal, and multifunctional catalysts for oxygen reduction, oxygen evolution, and hydrogen evolution.

Journal of the American Chemical Society, 2019
Buckminsterfullerene (C60) was adsorbed onto single-walled carbon nanotubes (SWCNTs) as an electron-acceptor to in-duce intermolecular charge-transfer with the SWCNTs, leading to a class of new metal-free C60-SWCNT electrocatalysts.
Rui Gao, Quanbin Dai, F. Du, Dongpeng Yan, L. Dai   +4 more
semanticscholar   +1 more source

Identifying Adsorbed OH Species on Pt and Ru Electrodes with Surface-Enhanced Infrared Absorption Spectroscopy through CO Displacement.

Journal of the American Chemical Society, 2023
OH adspecies are involved in numerous electrocatalytic reactions, such as CO, H2, methanol, and ethanol oxidation and oxygen reduction reactions, as a reaction intermediate and/or reactant.
Hongsen Wang, H. Abruña
semanticscholar   +1 more source