scholarly journals Stability of V2O5 Supported on Titania in the Presence of Water, Bulk Oxygen Vacancies, and Adsorbed Oxygen Atoms

2017 ◽  
Vol 121 (15) ◽  
pp. 8444-8451 ◽  
Author(s):  
Henrik H. Kristoffersen ◽  
Hunter L. Neilson ◽  
Steven K. Buratto ◽  
Horia Metiu
Keyword(s):  
Oxygen Vacancies ◽  
Adsorbed Oxygen ◽  
Bulk Oxygen ◽  
Oxygen Atoms

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

Active site densities, oxygen activation and adsorbed reactive oxygen in alcohol activation on npAu catalysts

2016 ◽  
Vol 188 ◽  
pp. 57-67 ◽  
Author(s):  
Lu-Cun Wang ◽  
C. M. Friend ◽  
Rebecca Fushimi ◽  
Robert J. Madix
Keyword(s):  
Selective Oxidation ◽  
Activation Barrier ◽  
Initial Step ◽  
Temporal Analysis ◽  
Adsorbed Oxygen ◽  
Transient Pressure ◽  
Pulse Reaction ◽  
Dissociation Probability ◽  
Oxidation Of Methanol ◽  
Oxygen Atoms

The activation of molecular O2 as well as the reactivity of adsorbed oxygen species is of central importance in aerobic selective oxidation chemistry on Au-based catalysts. Herein, we address the issue of O2 activation on unsupported nanoporous gold (npAu) catalysts by applying a transient pressure technique, a temporal analysis of products (TAP) reactor, to measure the saturation coverage of atomic oxygen, its collisional dissociation probability, the activation barrier for O2 dissociation, and the facility with which adsorbed O species activate methanol, the initial step in the catalytic cycle of esterification. The results from these experiments indicate that molecular O2 dissociation is associated with surface silver, that the density of reactive sites is quite low, that adsorbed oxygen atoms do not spill over from the sites of activation onto the surrounding surface, and that methanol reacts quite facilely with the adsorbed oxygen atoms. In addition, the O species from O2 dissociation exhibits reactivity for the selective oxidation of methanol but not for CO. The TAP experiments also revealed that the surface of the npAu catalyst is saturated with adsorbed O under steady state reaction conditions, at least for the pulse reaction.

Adsorption of alkanes on stoichiometric and oxygen-rich RuO2(110)

2016 ◽  
Vol 18 (32) ◽  
pp. 22647-22660 ◽  
Author(s):  
Tao Li ◽  
Minkyu Kim ◽  
Rahul Rai ◽  
Zhu Liang ◽  
Aravind Asthagiri ◽  
...  
Keyword(s):  
Adsorbed Oxygen ◽  
Oxygen Atoms

Alkanes form strongly-bound σ-complexes on RuO2(110) and change configurations in the presence of co-adsorbed oxygen atoms.

scholarly journals Atomic Origin for Hydrogenation Promoted Bulk Oxygen Vacancies Removal in Vanadium Dioxide

2020 ◽  
Vol 11 (23) ◽  
pp. 10045-10051
Author(s):  
Bowen Li ◽  
Min Hu ◽  
Hui Ren ◽  
Changlong Hu ◽  
Liang Li ◽  
...  
Keyword(s):  
Vanadium Dioxide ◽  
Oxygen Vacancies ◽  
Bulk Oxygen

Surface, Subsurface, and Bulk Oxygen Vacancies Quantified by Decoupling and Deconvolution of the Defect Structure of Redox-Active Nanoceria

2019 ◽  
Vol 58 (9) ◽  
pp. 6016-6027 ◽  
Author(s):  
Rashid Mehmood ◽  
Sajjad S. Mofarah ◽  
Wen-Fan Chen ◽  
Pramod Koshy ◽  
Charles C. Sorrell
Keyword(s):  
Defect Structure ◽  
Oxygen Vacancies ◽  
Redox Active ◽  
Bulk Oxygen

scholarly journals The prevalence of surface oxygen vacancies over the mobility of bulk oxygen in nanostructured ceria for the total toluene oxidation

2015 ◽  
Vol 174-175 ◽  
pp. 403-412 ◽  
Author(s):  
Jose Manuel López ◽  
Alexander L. Gilbank ◽  
Tomás García ◽  
Benjamín Solsona ◽  
Said Agouram ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Surface Oxygen ◽  
Toluene Oxidation ◽  
Nanostructured Ceria ◽  
Bulk Oxygen

TiO2 films with rich bulk oxygen vacancies prepared by electrospinning for dye-sensitized solar cells

2012 ◽  
Vol 214 ◽  
pp. 244-250 ◽  
Author(s):  
Xiaodong Li ◽  
Caitian Gao ◽  
Jiangtao Wang ◽  
Bingan Lu ◽  
Wanjun Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Oxygen Vacancies ◽  
Dye Sensitized Solar Cells ◽  
Tio2 Films ◽  
Dye Sensitized ◽  
Bulk Oxygen ◽  
Sensitized Solar Cells

Bulk oxygen vacancies enriched TiO2 and its enhanced visible photocatalytic performance

2018 ◽  
Vol 441 ◽  
pp. 150-155 ◽  
Author(s):  
Liming Xu ◽  
Xujun Ma ◽  
Na Sun ◽  
Feng Chen
Keyword(s):  
Oxygen Vacancies ◽  
Photocatalytic Performance ◽  
Bulk Oxygen
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