scholarly journals Uniform 2 nm gold nanoparticles supported on iron oxides as active catalysts for CO oxidation reaction: structure–activity relationship

Nanoscale ◽  
2015 ◽  
Vol 7 (11) ◽  
pp. 4920-4928 ◽  
Author(s):  
Yu Guo ◽  
Dong Gu ◽  
Zhao Jin ◽  
Pei-Pei Du ◽  
Rui Si ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Co Oxidation ◽  
Iron Oxides ◽  
Oxidation Reaction ◽  
Structure Activity Relationship ◽  
Activity Relationship ◽  
Support Interaction ◽  
Oxide Support ◽  
Co Oxidation Reaction ◽  
Structure Activity

Effective gold-support interaction formed through gold nanoparticles locally generated by sintering of dispersed Au atoms on the dehydrated oxide support.

scholarly journals Electronic metal–support interaction modulates single-atom platinum catalysis for hydrogen evolution reaction

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yi Shi ◽  
Zhi-Rui Ma ◽  
Yi-Ying Xiao ◽  
Yun-Chao Yin ◽  
Wen-Mao Huang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Structure Activity Relationship ◽  
Atomic Level ◽  
Single Atom ◽  
Activity Relationship ◽  
Support Interaction ◽  
Structure Activity ◽  
Metal Support Interaction ◽  
Metal Support

AbstractTuning metal–support interaction has been considered as an effective approach to modulate the electronic structure and catalytic activity of supported metal catalysts. At the atomic level, the understanding of the structure–activity relationship still remains obscure in heterogeneous catalysis, such as the conversion of water (alkaline) or hydronium ions (acid) to hydrogen (hydrogen evolution reaction, HER). Here, we reveal that the fine control over the oxidation states of single-atom Pt catalysts through electronic metal–support interaction significantly modulates the catalytic activities in either acidic or alkaline HER. Combined with detailed spectroscopic and electrochemical characterizations, the structure–activity relationship is established by correlating the acidic/alkaline HER activity with the average oxidation state of single-atom Pt and the Pt–H/Pt–OH interaction. This study sheds light on the atomic-level mechanistic understanding of acidic and alkaline HER, and further provides guidelines for the rational design of high-performance single-atom catalysts.

Using nano-QSAR to determine the most responsible factor(s) in gold nanoparticle exocytosis

RSC Advances ◽  
2015 ◽  
Vol 5 (70) ◽  
pp. 57030-57037 ◽  
Author(s):  
Arafeh Bigdeli ◽  
Mohammad Reza Hormozi-Nezhad ◽  
Hadi Parastar
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Qsar Model ◽  
Quantitative Structure Activity Relationship ◽  
Structure Activity Relationship ◽  
Activity Relationship ◽  
Quantitative Structure ◽  
Structure Activity ◽  
Determining Factors

A nano-quantitative structure-activity relationship (nano-QSAR) model is proposed to indicate the determining factors responsible in the exocytosis of gold nanoparticles in macrophages.

Structure–activity relationship of Au/ZrO2 catalyst on formation of hydroxyl groups and its influence on CO oxidation

2013 ◽  
Vol 1 (19) ◽  
pp. 6051 ◽  
Author(s):  
Christopher J. Karwacki ◽  
P. Ganesh ◽  
Paul R. C. Kent ◽  
Wesley O. Gordon ◽  
Gregory W. Peterson ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Structure Activity Relationship ◽  
Activity Relationship ◽  
Hydroxyl Groups ◽  
Structure Activity ◽  
Zro2 Catalyst ◽  
Relationship Of

Structure−Activity Relationship in Nanostructured Copper−Ceria-Based Preferential CO Oxidation Catalysts

2007 ◽  
Vol 111 (29) ◽  
pp. 11026-11038 ◽  
Author(s):  
D. Gamarra ◽  
G. Munuera ◽  
A. B. Hungría ◽  
M. Fernández-García ◽  
J. C. Conesa ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Structure Activity Relationship ◽  
Activity Relationship ◽  
Oxidation Catalysts ◽  
Preferential Co Oxidation ◽  
Structure Activity ◽  
Nanostructured Copper

scholarly journals Improved Catalytic Performance of Au/α-Fe2O3-Like-Worm Catalyst for Low Temperature CO Oxidation

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1118 ◽  
Author(s):  
Qiuwan Han ◽  
Dongyang Zhang ◽  
Jiuli Guo ◽  
Baolin Zhu ◽  
Weiping Huang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Gold Nanoparticles ◽  
Co Oxidation ◽  
Oxidation Reaction ◽  
Active Sites ◽  
Catalytic Performance ◽  
Photoelectron Spectra ◽  
Great Activity ◽  
X Ray ◽  
Co Oxidation Reaction

The gold catalysts supported on various morphologies of α-Fe2O3 in carbon monoxide (CO) oxidation reaction have been studied for many researchers. However, how to improve the catalytic activity and thermal stability for CO oxidation is still important. In this work, an unusual morphology of α-Fe2O3 was prepared by hydrothermal method and gold nanoparticles were supported using a deposition-precipitation method. Au/α-Fe2O3 catalyst exhibited great activity for CO oxidation. The crystal structure and microstructure images of α-Fe2O3 were carried out by X-ray diffraction (XRD) and scanning electron microscopy (SEM) and the size of gold nanoparticles was determined by transmission electron microscopy (TEM). X-ray photoelectron spectra (XPS) and Fourier transform infrared spectra (FTIR) results confirmed that the state of gold was metallic. The 1.86% Au/α-Fe2O3 catalyst calcined at 300 °C had the best catalytic performance for CO oxidation reaction and the mechanism for CO oxidation reaction was also discussed. It is highly likely that the small size of gold nanoparticle, oxygen vacancies and active sites played the decisive roles in CO oxidation reaction.

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