Vital Role of Moisture in the Catalytic Activity of Supported Gold Nanoparticles

2004 ◽  
Vol 43 (16) ◽  
pp. 2129-2132 ◽  
Author(s):  
Masakazu Daté ◽  
Mitsutaka Okumura ◽  
Susumu Tsubota ◽  
Masatake Haruta
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Vital Role ◽  
Supported Gold Nanoparticles ◽  
Supported Gold

Vital Role of Moisture in the Catalytic Activity of Supported Gold Nanoparticles

2004 ◽  
Vol 116 (16) ◽  
pp. 2181-2184 ◽  
Author(s):  
Masakazu Daté ◽  
Mitsutaka Okumura ◽  
Susumu Tsubota ◽  
Masatake Haruta
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Vital Role ◽  
Supported Gold Nanoparticles ◽  
Supported Gold

Role of Hydroxyl Groups in Low-Temperature CO Catalytic Oxidation over Zn4Si2O7(OH)2 Nanowire-Supported Gold Nanoparticles

2018 ◽  
Vol 122 (44) ◽  
pp. 25456-25466 ◽  
Author(s):  
Jing-Jing Li ◽  
Bao-Lin Zhu ◽  
Gui-Chang Wang ◽  
Zun-Feng Liu ◽  
Wei-Ping Huang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Low Temperature ◽  
Catalytic Oxidation ◽  
Hydroxyl Groups ◽  
Co Catalytic Oxidation ◽  
Supported Gold Nanoparticles ◽  
Supported Gold

Electrooxidation of Methanol on Carbon Supported Gold Nanoparticles

2013 ◽  
Vol 313-314 ◽  
pp. 232-236
Author(s):  
Dan Zhang
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Competitive Adsorption ◽  
Chemical Reduction ◽  
Reduction Process ◽  
Carbon Support ◽  
Transmission Electron ◽  
Supported Gold Nanoparticles ◽  
Supported Gold

Activated carbon supported gold nanoparticles (Au/C) were prepared by a chemical reduction process using NaBH4as a reducing agent. The characterization of transmission electron microscope indicated that the Au nanoparticles (AuNPs) in the Au/C catalyst were highly well dispersed on the carbon support. The catalytic activity of the Au/C catalyst for the methanol electrooxidation (MEO) was investigated by the cyclic voltammetry (CV). The results displayed that the Au/C catalyst exhibited a favorable catalytic activity towards the MEO in alkaline solution. Moreover, the competitive adsorption between OH-and CH3OH on the surface of the AuNPs in the Au/C catalyst existed in the course of the MEO. Based on this competitive adsorption, the mechanism of the MEO on the Au/C catalyst was further investigated.

scholarly journals New Insights on the Dynamic Role of the Protecting Agent on the Reactivity of Supported Gold Nanoparticles

ChemCatChem ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1653-1663
Author(s):  
Giorgio Grillo ◽  
Federica Menegazzo ◽  
Silvia Tabasso ◽  
Michela Signoretto ◽  
Maela Manzoli ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Supported Gold Nanoparticles ◽  
Supported Gold

Size and Catalytic Activity of Supported Gold Nanoparticles: An in Operando Study during CO Oxidation

2011 ◽  
Vol 115 (11) ◽  
pp. 4673-4679 ◽  
Author(s):  
I. Laoufi ◽  
M.-C. Saint-Lager ◽  
R. Lazzari ◽  
J. Jupille ◽  
O. Robach ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Co Oxidation ◽  
In Operando ◽  
Supported Gold Nanoparticles ◽  
Supported Gold

Activity of ceria and ceria-supported gold nanoparticles for the carbamoylation of aliphatic amines by dimethyl carbonate

2011 ◽  
Vol 84 (3) ◽  
pp. 685-694 ◽  
Author(s):  
Raquel Juárez ◽  
Avelino Corma ◽  
Hermenegildo García
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Aromatic Amines ◽  
Au Nanoparticles ◽  
Dimethyl Carbonate ◽  
Aliphatic Amines ◽  
Supported Gold Nanoparticles ◽  
Supported Gold

Aliphatic amines react sluggishly with dimethyl carbonate (DMC) to give a mixture of N-methylation and carbamoylation. Nanoparticulated ceria as catalyst increases, in general, conversion and selectivity toward carbamoylation. This increase in catalytic activity and selectivity toward carbamoylation is even increased by deposition of Au nanoparticles on ceria. However, in contrast to aromatic amines for which a complete selectivity toward carbamoylation using ceria-supported Au nanoparticles can be achieved, the catalytic carbamoylation of aliphatic amines by ceria-supported Au nanoparticles occurs only with moderate selectivity.

Dendritic fibrous nano-silica supported gold nanoparticles as an artificial enzyme

2018 ◽  
Vol 6 (11) ◽  
pp. 1600-1604 ◽  
Author(s):  
Rustam Singh ◽  
Rajesh Belgamwar ◽  
Mahak Dhiman ◽  
Vivek Polshettiwar
Keyword(s):  
Gold Nanoparticles ◽  
Enzymatic Activity ◽  
Oxidation Product ◽  
Artificial Enzyme ◽  
Nano Silica ◽  
Unique Role ◽  
Fibrous Morphology ◽  
Supported Gold Nanoparticles ◽  
Supported Gold

We report a dendritic fibrous nano-silica supported gold nanoparticles (DFNS/Au) as peroxidase like artificial enzyme. This study indicates the unique role of fibrous morphology of DFNS for enhancement in enzymatic activity. A solvent dependent selectivity towards a two-electron oxidation product, TMB-diamine, has also been observed.

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