DFT modelling of the CO-NO redox reaction at Cu-doped SrTiO3(1 0 0) stepped surface: CO oxidation at lattice O ions

2020 ◽  
Vol 511 ◽  
pp. 119810
Author(s):  
Silvia Carlotto ◽  
Andrea Vittadini ◽  
Maurizio Casarin
Keyword(s):  
Co Oxidation ◽  
Redox Reaction ◽  
Stepped Surface ◽  
Dft Modelling

scholarly journals New methods of controlled monolayer-to-multilayer deposition of Pt for designing electrocatalysts at an atomic level

2001 ◽  
Vol 66 (11-12) ◽  
pp. 887-898 ◽  
Author(s):  
S.R. Brankovic ◽  
J.X. Wang ◽  
R.R. Adzic
Keyword(s):  
Co Oxidation ◽  
Electrode Surface ◽  
Redox Reaction ◽  
Atomic Level ◽  
The Other ◽  
Spontaneous Deposition ◽  
Co Tolerance ◽  
New Methods ◽  
Ru Nanoparticles ◽  
Local Cell

Two new methods for monolayer-to-multileyer Pt deposition are presented. One involves Pt deposition by the replacement of an UPD metal monolayer on an electrode surface and the other the spontaneous deposition of Pt on Ru. The first method, exemplified by the replacement of a Cu monolayer on a Au(111) surface, occurs as a spontaneous irreversible redox reaction in which the Cu monolayer is oxidized by Pt cations, which are reduced and simultaneously deposited. The second method is illustrated by the deposition of Pt on a Ru(0001) surface and on carbon-supported Ru nanoparticles. This deposition takes place upon immersion of a UHV-prepared Ru(0001) crystal or Ru nanoparticles, reduced in H2, in a solution containing PtCl6 2- ions. The oxidation of Ru to RuOH by a local cell mechanism appears to be coupled with Pt deposition. This method facilitates the design of active Pt-Ru catalysts with ultimately low Pt loadings. Only a quarter of a monolayer of Pt on Ru nanoparticles yields an electrocatalyst with higher activity and CO tolerance for H2/CO oxidation than commercial Pt-Ru alloy electrocatalysts with considerably higher Pt loadings.

DFT modelling of the NO reduction process at the Cu-doped SrTiO3(1 0 0) stepped surface

2020 ◽  
Vol 511 ◽  
pp. 119813
Author(s):  
Silvia Carlotto ◽  
Andrea Vittadini ◽  
Maurizio Casarin
Keyword(s):  
No Reduction ◽  
Reduction Process ◽  
Stepped Surface ◽  
Dft Modelling

Investigation of CO Oxidation Transient Kinetics on an Oxygen Pre-covered Au(211) Stepped Surface

2008 ◽  
Vol 128 (3-4) ◽  
pp. 263-267 ◽  
Author(s):  
Enrique Samano ◽  
Jooho Kim ◽  
Bruce E. Koel
Keyword(s):  
Co Oxidation ◽  
Transient Kinetics ◽  
Stepped Surface

Pt-Embedded CuOx–CeO2 Multicore–Shell Composites: Interfacial Redox Reaction-Directed Synthesis and Composition-Dependent Performance for CO Oxidation

2018 ◽  
Vol 10 (40) ◽  
pp. 34172-34183 ◽  
Author(s):  
Ke Wu ◽  
Xin-Pu Fu ◽  
Wen-Zhu Yu ◽  
Wei-Wei Wang ◽  
Chun-Jiang Jia ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Redox Reaction ◽  
Directed Synthesis

STRUCTURE-SENSITIVITY IN THE DYNAMICS OF CO OXIDATION OVER Pd SURFACES: INFRARED CHEMHEMILUMINESCENCE OF THE PRODUCT CO2

1997 ◽  
Vol 04 (06) ◽  
pp. 1359-1363 ◽  
Author(s):  
H. UETSUKA ◽  
K. WATANABE ◽  
H. OHNUMA ◽  
K. KUNIMORI
Keyword(s):  
Steady State ◽  
Surface Temperature ◽  
Co Oxidation ◽  
Surface Reaction ◽  
Reaction Dynamics ◽  
Structure Sensitivity ◽  
Surface Structures ◽  
Flat Surfaces ◽  
Structure Sensitive ◽  
Stepped Surface

Infrared-chemiluminescence spectra of CO 2 molecules formed by steady-state CO oxidation on Pd (111), Pd (110), Pd (100) and polycrystalline- Pd surfaces have been measured to get information on the surface reaction dynamics. In all cases, the product CO 2 was vibrationally and rotationally excited. The CO 2 molecules desorbed from Pd (100) and Pd (111), which have flat surfaces, were vibrationally more excited than those from Pd (110) (stepped surface) and polycrystalline Pd . These results show that the dynamics of CO oxidation on Pd surfaces are structure-sensitive, i.e. the structure of the activated CO 2 complex depends on the surface structures of the reaction sites. Furthermore, the activities of steady-state CO oxidation as a function of surface temperature were different among these Pd surfaces, which indicates that the CO oxidation on Pd is also structure-sensitive in the kinetics.

Facile synthesis of highly-dispersed Pt/CeO2 by a spontaneous surface redox chemical reaction for CO oxidation

2018 ◽  
Vol 8 (13) ◽  
pp. 3233-3237 ◽  
Author(s):  
Fangxian Cao ◽  
Sai Zhang ◽  
Wei Gao ◽  
Tian Cao ◽  
Yongquan Qu
Keyword(s):  
Metal Ions ◽  
Co Oxidation ◽  
Chemical Reaction ◽  
Redox Reaction ◽  
Facile Synthesis ◽  
Oxidation Activity ◽  
Highly Dispersed ◽  
Surface Redox ◽  
Surface Redox Reaction

A highly-dispersed Pt/CeO2 catalyst synthesized through a spontaneous surface redox reaction between metal ions and Ce(OH)3/CeO2 nanorods delivers high CO oxidation activity.

Catalytic CO Oxidation on Unreconstructed Cu(110) by Reactive As-Adsorbed Oxygen Atoms below 230 K

1996 ◽  
Vol 100 (3) ◽  
pp. 1048-1054 ◽  
Author(s):  
Tsuyoshi Sueyoshi ◽  
Takehiko Sasaki ◽  
Yasuhiro Iwasawa
Keyword(s):  
Co Oxidation ◽  
Adsorbed Oxygen ◽  
Catalytic Co Oxidation ◽  
Oxygen Atoms
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