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.

N-Heterocyclic carbene palladium complex supported on ionic liquid-modified graphene oxide as an efficient and recyclable catalyst for Suzuki reaction

RSC Advances ◽  
2014 ◽  
Vol 4 (28) ◽  
pp. 14586-14591 ◽  
Author(s):  
Siyavash Kazemi Movahed ◽  
Rahele Esmatpoursalmani ◽  
Ayoob Bazgir
Keyword(s):  
Ionic Liquid ◽  
Graphene Oxide ◽  
Catalytic Activity ◽  
Palladium Complex ◽  
Suzuki Reaction ◽  
Recyclable Catalyst ◽  
High Catalytic Activity ◽  
Modified Graphene Oxide ◽  
Modified Graphene ◽  
Silylation Reaction

An N-heterocyclic carbene Pd complex immobilized on GO with an ionic liquid framework synthesized by the modification of GO through a silylation reaction displayed a high catalytic activity in the Suzuki reaction.

Polyimide foams with outstanding flame resistance and mechanical properties by the incorporation of noncovalent bond modified graphene oxide

2020 ◽  
Vol 44 (28) ◽  
pp. 12068-12078 ◽  
Author(s):  
Hongtao Liu ◽  
Huafeng Tian ◽  
Yuanyuan Yao ◽  
Aiming Xiang ◽  
Haisong Qi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Graphene Oxide ◽  
Flame Resistance ◽  
Noncovalent Bond ◽  
Composite Foams ◽  
Modified Graphene Oxide ◽  
Modified Graphene

PI composite foams were in situ generated by incorporating modified GO to further improve flame resistance, thermal stability and mechanical properties.

Influence of Reductants on the Catalytic Properties of Nano-Gold Supported on Mesoporous SBA-15 for Glucose Oxidation

2012 ◽  
Vol 550-553 ◽  
pp. 220-224
Author(s):  
Chao Xian Wang ◽  
Yong Xiu Li ◽  
Hui Liu ◽  
Long Wei Ye ◽  
Chang Yong Sun ◽  
...  
Keyword(s):  
Particle Size ◽  
Catalytic Activity ◽  
Glucose Oxidation ◽  
Au Nanoparticles ◽  
Catalytic Properties ◽  
Aerobic Oxidation ◽  
Au Nps ◽  
Nano Gold ◽  
Sem And Tem ◽  
Oxidation Of Glucose

Impregnation and deposition-precipitation (DP) methods were employed for the preparation of Au nanoparticles supported on SBA-15, and the influences of various reductants were systematically surveyed. The dispersion and particle size of gold loaded on SBA-15 were determined by XRD, SEM and TEM. It has been found that reductants have effect on the size and dispersion of Au NPs, resulting in different catalytic properties for aerobic oxidation of glucose. The Au NPs on SBA-15 using KBH4as reductant was approximately 5-6 nm, which exhibited excellent catalytic activity.

scholarly journals Variable self-assembly and in situ host–guest reaction of beta-cyclodextrin-modified graphene oxide composite Langmuir films with azobenzene compounds

RSC Advances ◽  
2017 ◽  
Vol 7 (65) ◽  
pp. 41043-41051 ◽  
Author(s):  
Yagui Gao ◽  
Tifeng Jiao ◽  
Kai Ma ◽  
Ruirui Xing ◽  
Lexin Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Self Assembly ◽  
Langmuir Films ◽  
Assembly Process ◽  
Oxide Composite ◽  
Beta Cyclodextrin ◽  
Modified Graphene Oxide ◽  
Modified Graphene

Different composite Langmuir films (GO–CD/N-Azo and GO–CD/PAA-Azo) are prepared via simple interfacial self-assembly process and host–guest reaction, demonstrating variable self-assembly for wide applications.

In situ Synthesis of Reduced Graphene Oxide Supported CoMo Nanoparticles as Efficient Catalysts for Hydrogen Generation from NH3BH3

2018 ◽  
Vol 232 (3) ◽  
pp. 431-443 ◽  
Author(s):  
Xigang Du ◽  
Yonghua Duan ◽  
Jun Zhang ◽  
Gang Mi
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Catalytic Activity ◽  
Reduced Graphene Oxide ◽  
Hydrogen Generation ◽  
Sodium Molybdate ◽  
High Catalytic Activity ◽  
Ambient Conditions ◽  
Reduced Graphene

AbstractCoMo nanoparticles (NPs) supported on reduced graphene oxide (RGO) were synthesized by a one-stepin situco-reduction of an aqueous solution of cobalt(II) chloride, sodium molybdate dihydrate and graphene oxide (GO) using NaBH4as the sole reductant under ambient conditions. The powder XRD, FTIR, EDS and TEM were employed to characterize the structure, size and composition of the CoMo/RGO catalysts. The as-synthesized Co0.9Mo0.1/RGO catalysts exhibited high catalytic activity for the hydrolytic dehydrogenation of ammonia borane (AB) at room temperature. The as-synthesized Co0.9Mo0.1/RGO nanocatalysts exhibited much higher catalytic activity than Co/RGO, Mo/RGO and the RGO-free Co0.9Mo0.1counterpart. Moreover, kinetic studies indicate that the catalytic hydrolysis of AB by Co0.9Mo0.1/RGO has first order kinetics with respect to the the catalyst concentration, but zero order kinetics with respect to the substrate concentration. The Co0.9Mo0.1/RGO catalyst has a turnover frequency (TOF) of 15.8 mol H2·(mol·Co0.9Mo0.1/RGO)−1·min−1at 25°C. Furthermore, the Co0.9Mo0.1/RGO show good recyclability for hydrogen generation from an aqueous solution of AB, which enables the practical reuse of the catalysts. Hence, this general method can be easily extended to the facile preparation of other RGO-based metallic systems.

Hierarchically porous ternary Au/ZnO@ZIF-8 nanocomposite: spatial in situ Au encapsulation and catalytic activity for the reduction of p-nitrophenol

RSC Advances ◽  
2016 ◽  
Vol 6 (113) ◽  
pp. 112451-112454 ◽  
Author(s):  
Xiaokai Song ◽  
Hongzhao Sun ◽  
Xin Cao ◽  
Zhixian Wang ◽  
Dejian Zhao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Au Nanoparticles ◽  
High Catalytic Activity ◽  
Nucleation Process ◽  
Hierarchically Porous ◽  
Crystal Matrix

A ternary Au/ZnO@ZIF-8 nanocomposite was prepared through in situ Au nanoparticles encapsulation from the ZnO surface into the ZIF-8 crystal matrix during its nucleation process, which exhibited high catalytic activity for the reduction of p-nitrophenol.

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