In situ biosynthesis of palladium nanoparticles on Artemisia abrotanum extract-modified graphene oxide and its catalytic activity for Suzuki coupling reactions

Polyhedron ◽  
2019 ◽  
Vol 165 ◽  
pp. 132-137 ◽  
Author(s):  
Mirmehdi Hashemi Salehi ◽  
Mohammad Yousefi ◽  
Malak Hekmati ◽  
Ebrahim Balali
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Palladium Nanoparticles ◽  
Suzuki Coupling ◽  
Coupling Reactions ◽  
Modified Graphene Oxide ◽  
Modified Graphene ◽  
Artemisia Abrotanum

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.

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.

Malus domestica Mediated Synthesis of Palladium Nanoparticles and Investigation of Their Catalytic Activity Towards the Suzuki Coupling Reactions

2018 ◽  
Vol 10 (3) ◽  
pp. 373-377 ◽  
Author(s):  
Farah Qazi ◽  
Zakir Hussain ◽  
Soneela Asghar ◽  
Ghayoor Abbas ◽  
Muhammad Riaz
Keyword(s):  
Gas Chromatography ◽  
Catalytic Activity ◽  
Malus Domestica ◽  
Palladium Nanoparticles ◽  
Suzuki Coupling ◽  
Coupling Reactions ◽  
X Rays ◽  
Fruit Extract ◽  
Vis Spectroscopy ◽  
Ft Ir

Synthesis of nanoparticles through green methods is considered to be more eco-friendly and facile as compared to conventional physical and chemical methods. In this work, an environmental friendly method to synthesize palladium nanoparticles (Pd-NPs) by using a fruit extract has been reported. This extract obtained from Malus domestica (apple); acted as a source of reducing agent and functioned as a capping agent as well. The Pd-NPs were monitored and characterized by ultraviolet-visible (UV-Vis) spectroscopy; powder X-rays diffraction (XRD), scanning electron microscopy (SEM) and Fourier-transform infra-red (FT-IR) spectroscopy. FT-IR spectra revealed the presence of abundant amounts of ascorbic acid in the fruit extract which is assumed to reduce the Palladium chloride to Pd-NPs. XRD results confirmed the crystalline nature of Pd-NPs (JCPDS: No. 05-0681, space group: Fm3m (225)). These nanoparticles were further investigated for their catalytic activity towards the Suzuki coupling reactions where by employing only 2 mol% of the catalyst loading these Pd-NPs demonstrated excellent catalytic activity. Progress and completion of reactions were monitored by gas chromatography (GC) while products formed were characterized by gas chromatography-mass spectrometry (GC-MS), FT-IR as well as from their melting points data. Pd-NPs showed excellent catalytic activity; thereby suggesting their potential and scope for various other catalytic transformations.

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.

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