scholarly journals Atomic Resolution Observation of a Size-Dependent Change in the Ripening Modes of Mass-Selected Au Nanoclusters Involved in CO Oxidation

2015 ◽  
Vol 137 (48) ◽  
pp. 15161-15168 ◽  
Author(s):  
Kuo-Juei Hu ◽  
Simon R. Plant ◽  
Peter R. Ellis ◽  
Christopher M. Brown ◽  
Peter T. Bishop ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Atomic Resolution ◽  
Au Nanoclusters ◽  
Size Dependent ◽  
Dependent Change ◽  
Resolution Observation

Growth kinetic control over MgFe2O4 to tune Fe occupancy and metal–support interactions for optimum catalytic performance

CrystEngComm ◽  
2021 ◽  
Vol 23 (13) ◽  
pp. 2538-2546
Author(s):  
Min Yang ◽  
Guangshe Li ◽  
Huixia Li ◽  
Junfang Ding ◽  
Yan Wang ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Growth Kinetic ◽  
Catalytic Performance ◽  
Growth Behavior ◽  
Kinetic Control ◽  
Size Dependent ◽  
Metal Support ◽  
Support Size ◽  
Metal Support Interactions ◽  
First Time

For the first time, the growth behavior with size-dependent Fe occupancies at different sites of MgFe2O4 was examined. Hybrid catalysts of Pt/MgFe2O4 with a support size of 20.6 nm exhibited an optimal performance of CO oxidation.

Theoretical study of catalytic oxidation of CO on free PdxO2+ (x = 4–6) clusters: size dependent comparison of combustion

RSC Advances ◽  
2015 ◽  
Vol 5 (53) ◽  
pp. 42329-42340 ◽  
Author(s):  
Chandan Sahu ◽  
Deepanwita Ghosh ◽  
Abhijit K. Das
Keyword(s):  
Co Oxidation ◽  
Catalytic Oxidation ◽  
Theoretical Study ◽  
Dft Study ◽  
Oxidation Of Co ◽  
Catalytic Co Oxidation ◽  
Size Dependent ◽  
Catalytic Oxidation Of Co

A DFT study has been adopted to explore the catalytic CO oxidation on a free PdxO2+ (x = 4–6) cluster.

scholarly journals Reaction-Induced Cluster Ripening and Initial Size-Dependent Reaction Rates for CO Oxidation on Ptn/TiO2(110)-(1×1)

2014 ◽  
Vol 136 (24) ◽  
pp. 8702-8707 ◽  
Author(s):  
Simon Bonanni ◽  
Kamel Aït-Mansour ◽  
Wolfgang Harbich ◽  
Harald Brune
Keyword(s):  
Co Oxidation ◽  
Reaction Rates ◽  
Initial Size ◽  
Size Dependent

scholarly journals Atomic Resolution Observation of the Oxidation of Niobium Oxide Nanowires: Implications for Renewable Energy Applications

2020 ◽  
Vol 3 (9) ◽  
pp. 9285-9292
Author(s):  
Sophia B. Betzler ◽  
Ai Leen Koh ◽  
Bettina V. Lotsch ◽  
Robert Sinclair ◽  
Christina Scheu
Keyword(s):  
Renewable Energy ◽  
Niobium Oxide ◽  
Atomic Resolution ◽  
Oxide Nanowires ◽  
Energy Applications ◽  
Resolution Observation

scholarly journals Size-dependent dynamic structures of supported gold nanoparticles in CO oxidation reaction condition

2018 ◽  
Vol 115 (30) ◽  
pp. 7700-7705 ◽  
Author(s):  
Yang He ◽  
Jin-Cheng Liu ◽  
Langli Luo ◽  
Yang-Gang Wang ◽  
Junfa Zhu ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Oxidation Reaction ◽  
Au Nanoparticles ◽  
Working Condition ◽  
Ab Initio Molecular Dynamics ◽  
Present Observation ◽  
Size Dependent ◽  
Reaction Condition ◽  
Au Clusters ◽  
Co Oxidation Reaction

Gold (Au) catalysts exhibit a significant size effect, but its origin has been puzzling for a long time. It is generally believed that supported Au clusters are more or less rigid in working condition, which inevitably leads to the general speculation that the active sites are immobile. Here, by using atomic resolution in situ environmental transmission electron microscopy, we report size-dependent structure dynamics of single Au nanoparticles on ceria (CeO2) in CO oxidation reaction condition at room temperature. While large Au nanoparticles remain rigid in the catalytic working condition, ultrasmall Au clusters lose their intrinsic structures and become disordered, featuring vigorous structural rearrangements and formation of dynamic low-coordinated atoms on surface. Ab initio molecular-dynamics simulations reveal that the interaction between ultrasmall Au cluster and CO molecules leads to the dynamic structural responses, demonstrating that the shape of the catalytic particle under the working condition may totally differ from the shape under the static condition. The present observation provides insight on the origin of superior catalytic properties of ultrasmall gold clusters.

Size-dependent propagation of Au nanoclusters through few-layer graphene

Nanoscale ◽  
2014 ◽  
Vol 6 (3) ◽  
pp. 1258-1263 ◽  
Author(s):  
Simon R. Plant ◽  
Lu Cao ◽  
Feng Yin ◽  
Zhi Wei Wang ◽  
Richard E. Palmer
Keyword(s):  
Au Nanoclusters ◽  
Size Dependent ◽  
Layer Graphene ◽  
Few Layer Graphene
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