Role of Oxygen Vacancies in Water Vapor Chemisorption and CO Oxidation on Titania

1995 ◽  
Vol 170 (1) ◽  
pp. 215-219 ◽  
Author(s):  
G. Sengupta ◽  
R.N. Chatterjee ◽  
G.C. Maity ◽  
B.J. Ansari ◽  
C.V.V. Satyanarayna
Keyword(s):  
Water Vapor ◽  
Co Oxidation ◽  
Oxygen Vacancies

CO Oxidation on PdO(101) during Temperature-Programmed Reaction Spectroscopy: Role of Oxygen Vacancies

2014 ◽  
Vol 118 (49) ◽  
pp. 28647-28661 ◽  
Author(s):  
Feng Zhang ◽  
Li Pan ◽  
Tao Li ◽  
John T. Diulus ◽  
Aravind Asthagiri ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Oxygen Vacancies ◽  
Temperature Programmed ◽  
Temperature Programmed Reaction Spectroscopy ◽  
Temperature Programmed Reaction

First principles study of CO oxidation on TiO2(110): The role of surface oxygen vacancies

2004 ◽  
Vol 120 (9) ◽  
pp. 4512-4516 ◽  
Author(s):  
Xueyuan Wu ◽  
Annabella Selloni ◽  
Saroj K. Nayak
Keyword(s):  
Co Oxidation ◽  
First Principles ◽  
Oxygen Vacancies ◽  
Surface Oxygen ◽  
First Principles Study

CO Oxidation at Rutile TiO2(110): Role of Oxygen Vacancies and Titanium Interstitials

ACS Catalysis ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 2042-2050 ◽  
Author(s):  
Yan-Yan Yu ◽  
Xue-Qing Gong
Keyword(s):  
Co Oxidation ◽  
Oxygen Vacancies ◽  
Rutile Tio2

Balanced performance for β-Ga2O3 solar blind photodetectors: The role of oxygen vacancies

2021 ◽  
Vol 112 ◽  
pp. 110808
Author(s):  
Jiang Wang ◽  
Yuanqiang Xiong ◽  
Lijuan Ye ◽  
Wanjun Li ◽  
Guoping Qin ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Solar Blind

scholarly journals On the Effects of Doping on the Catalytic Performance of (La,Sr)CoO3. A DFT Study of CO Oxidation

Catalysts ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 312 ◽  
Author(s):  
Antonella Glisenti ◽  
Andrea Vittadini
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Density Functional Calculations ◽  
Density Functional ◽  
Formation Energy ◽  
Oxygen Vacancies ◽  
Catalytic Performance ◽  
Energy Profiles ◽  
High Concentrations ◽  
3D Impurities

The effects of modifying the composition of LaCoO3 on the catalytic activity are predicted by density functional calculations. Partially replacing La by Sr ions has benefical effects, causing a lowering of the formation energy of O vacancies. In contrast to that, doping at the Co site is less effective, as only 3d impurities heavier than Co are able to stabilize vacancies at high concentrations. The comparison of the energy profiles for CO oxidation of undoped and of Ni-, Cu-m and Zn-doped (La,Sr)CoO3(100) surface shows that Cu is most effective. However, the effects are less spectacular than in the SrTiO3 case, due to the different energetics for the formation of oxygen vacancies in the two hosts.

On the Role of Diffusion in the Oxidation of Fe, Ni, Co and the Fe-Sn Alloy by Calcium and Sodium Sulfates

2006 ◽  
Vol 258-260 ◽  
pp. 63-67
Author(s):  
V.M. Chumarev ◽  
V.P. Maryevich ◽  
V.A. Shashmurin
Keyword(s):  
Co Oxidation ◽  
Chemical Reaction ◽  
Diffusion Processes ◽  
Transport Processes ◽  
Diffusion Transport ◽  
Sodium Sulfates ◽  
Product Forms ◽  
Kinetics Of ◽  
Dominant Part

Diffusion processes play a dominant part in the macro kinetics of Fe, Ni and Co oxidation by calcium and sodium sulfates. Here, the reaction product forms a compact covering which spatially divides the reagents on the surface in the same way as in the oxidation and sulfidization of metals by oxygen and sulfur. Therefore, it is possible to assume in advance that interaction of metals with calcium and sodium sulfates will be determined not by the actual chemical reaction properly but by the diffusion transport processes.

Role of oxygen vacancies on ferromagnetism in Fe-doped TiO2 thin films

2007 ◽  
Vol 102 (7) ◽  
pp. 073905 ◽  
Author(s):  
H. J. Meng ◽  
D. L. Hou ◽  
L. Y. Jia ◽  
X. J. Ye ◽  
H. J. Zhou ◽  
...  
Keyword(s):  
Thin Films ◽  
Oxygen Vacancies ◽  
Tio2 Thin Films ◽  
Doped Tio2

In situ FTIR studies of CO oxidation over Fe-free and Fe-promoted PtY catalysts: Effect of water vapor addition

2011 ◽  
Vol 344 (1-2) ◽  
pp. 111-121 ◽  
Author(s):  
Zeinhom M. El-Bahy ◽  
Ahmed I. Hanafy ◽  
Mohamed M. Ibrahim ◽  
Masakazu Anpo
Keyword(s):  
Water Vapor ◽  
Co Oxidation ◽  
In Situ Ftir ◽  
Effect Of Water ◽  
Ftir Studies
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