Hollow silica nanostructures with small size Au nanoparticles for catalytic applications

RSC Advances ◽  
2016 ◽  
Vol 6 (92) ◽  
pp. 89057-89060 ◽  
Author(s):  
Lin Yao ◽  
Jong-Min Lee
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Au Nanoparticles ◽  
Tetraethyl Orthosilicate ◽  
High Catalytic Activity ◽  
Hollow Silica ◽  
Silica Nanostructures ◽  
Catalytic Applications

Hollow silica nanostructures synthesized using the silica precursors (3-aminopropyl) trimethoxysilane and tetraethyl orthosilicate provide support to small sized gold nanoparticles with a high catalytic activity for the reduction of 4-nitrophenol.

Preparation of TiO2-supported twinned gold nanoparticles by CO treatment and their CO oxidation activity

2015 ◽  
Vol 51 (87) ◽  
pp. 15823-15826 ◽  
Author(s):  
Junya Ohyama ◽  
Taiki Koketsu ◽  
Yuta Yamamoto ◽  
Shigeo Arai ◽  
Atsushi Satsuma
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Co Oxidation ◽  
Au Nanoparticles ◽  
High Catalytic Activity ◽  
Oxidation Activity

Au/TiO2 prepared by CO treatment showed high catalytic activity for CO oxidation due to twinned structure of Au nanoparticles.

Facile synthesis of thermo-responsive episulfide group-containing diblock copolymers as robust protecting ligands of gold nanoparticles for catalytic applications

RSC Advances ◽  
2016 ◽  
Vol 6 (44) ◽  
pp. 37487-37499 ◽  
Author(s):  
Dongmei Wang ◽  
Bingxin Liu ◽  
Jianhua Lü ◽  
Changli Lü
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Diblock Copolymers ◽  
Colloidal Stability ◽  
High Catalytic Activity ◽  
Facile Synthesis ◽  
Au Nps ◽  
Catalytic Applications

Well-defined novel thermo-responsive diblock copolymers containing episulfide ligand stabilized Au NPs show interesting assembly morphologies, excellent colloidal stability and high catalytic activity for the reduction of 4-nitrophenol.

scholarly journals Borenium ionic liquids as catalysts for Diels–Alder reaction: tuneable Lewis superacids for catalytic applications

2017 ◽  
Vol 7 (5) ◽  
pp. 1045-1049 ◽  
Author(s):  
K. Matuszek ◽  
S. Coffie ◽  
A. Chrobok ◽  
M. Swadźba-Kwaśny
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Alder Reaction ◽  
Diels Alder ◽  
Lewis Acidity ◽  
High Catalytic Activity ◽  
Acceptor Number ◽  
Diels Alder Reaction ◽  
Catalytic Applications

Ionic liquids with Lewis superacidic borenium cations were used as catalysts in solvent-less Diels–Alder cycloaddition. The extremely high catalytic activity correlated with the Lewis acidity, expressed as the Gutmann acceptor number.

scholarly journals Highly active catalysts of iron-based materials with Au nanoparticles for soot oxidation

2019 ◽  
Vol 136 ◽  
pp. 06029
Author(s):  
Chao Wei ◽  
Zhenzhen Chen ◽  
Chao Hu ◽  
Haitao Wang
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Transition Metal ◽  
Metal Oxide ◽  
Au Nanoparticles ◽  
Soot Oxidation ◽  
Transition Metal Oxide ◽  
Initial Oxidation ◽  
Highly Active ◽  
Iron Based

Gold nanoparticles supported on transition metal oxide catalysts have been prepared by deposition-precipitation. Their catalytic activity with or without Au doped has been tested for soot oxidation. Au improves the catalytic activity of transition metal oxide for the oxidation of soot particles. Under the catalysis of Au/Co3O4, the initial oxidation temperature of soot is 354 ℃.

A facile construction of Au nanoparticles on a copolymer ligand brushes modified graphene oxide nanoplatform with excellent catalytic properties

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 64937-64945 ◽  
Author(s):  
Yajiao Song ◽  
Jianhua Lü ◽  
Bingxin Liu ◽  
Changli Lü
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Au Nanoparticles ◽  
Catalytic Properties ◽  
High Catalytic Activity ◽  
Au Nps ◽  
Modified Graphene Oxide ◽  
Modified Graphene ◽  
Copolymer Brush

Au NPs were generated via in situ reduction on copolymer brush P(OEGMA-co-MQ) functionalized GO. MQ units in the brushes as capping agents could stabilize the Au NPs. The Au NPs–GO hybrid exhibited high catalytic activity for the reduction of 4-NP.

In situ loading of gold nanoparticles on Fe3O4@SiO2 magnetic nanocomposites and their high catalytic activity

Nanoscale ◽  
2013 ◽  
Vol 5 (11) ◽  
pp. 4894 ◽  
Author(s):  
Jinmin Zheng ◽  
Yalei Dong ◽  
Weifeng Wang ◽  
Yanhua Ma ◽  
Jing Hu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Magnetic Nanocomposites ◽  
High Catalytic Activity

Gold nanoparticles as an outstanding catalyst for the hydrogen evolution reaction

2018 ◽  
Vol 54 (27) ◽  
pp. 3363-3366 ◽  
Author(s):  
Tien D. Tran ◽  
Mai T. T. Nguyen ◽  
Hoang V. Le ◽  
Duc N. Nguyen ◽  
Quang Duc Truong ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Au Nanoparticles ◽  
Reaction In Water

An electrode made of Au nanoparticles, ca. 13 nm in diameter, displays outstanding catalytic activity for the hydrogen evolution reaction in water.

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.

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