CARBON NANOTUBE-GRAFT-POLY (CITRIC ACID) CONTAINING SILVER AND PALLADIUM NANOPARTICLES

A simple method has been developed for decorating multi wall carbon nanotubes (MWCNTs) with palladium and silver nanoparticles. In this method, MWCNT was opened and functionalized using nitric and sulfuric acid mixture. Then citric acid was polymerized in the presence of functionalized MWCNT and MWCNT-graft-poly (citric acid) (MWCNT-g-PCA) was obtained. The mixing of MWCNT-g-PCA with metal salts, such as palladium chloride and silver nitrate, leads to encapsulation of metal nanoparticles in the polymeric shell ( MWCNT/Pd, AgNPs ). The structure of MWCNT/Pd and AgNPs were characterized by usual spectroscopy and microscopy methods. The influence of nanoparticles on the electrical conductivity of MWCNT was also investigated.

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CARBON NANOTUBE-GRAFT-POLY(CITRIC ACID) NANOCOMPOSITES

NANO ◽

10.1142/s1793292008000824 ◽

2008 ◽

Vol 03 (01) ◽

pp. 37-44 ◽

Cited By ~ 38

Author(s):

MOHSEN ADELI ◽

ALI BAHARI ◽

HODA HEKMATARA

Keyword(s):

Carbon Nanotubes ◽

Silver Nanoparticles ◽

Citric Acid ◽

Room Temperature ◽

Water Solution ◽

Degree Of Polymerization ◽

Multi Wall Carbon Nanotubes ◽

Hyperbranched Poly ◽

Acid Ratio ◽

Biodegradable Nanocomposites

Novel biodegradable nanocomposites containing multi wall carbon nanotubes (MWCNT) and poly(citric acid) (PCA) were successfully synthesized. For preparation of nanocomposites, MWCNT was opened using a mixture of sulfuric and nitric acid and its derivative containing – COOH and – OH functional groups was obtained. Polycondensation of monohydrate citric acid in the presence of functionalized MWCNT in the melting state was lead to nanotube-graft-poly(citric acid) (CNT-g-PCA) nanocomposites. The degree of polymerization of grafted hyperbranched poly(citric acid) onto the CNTs was controlled using CNT/citric acid ratio. The CNT-g-PCA were soluble in water freely and stirring their water solution and silver nitrate at room temperature lead to the CNT-g-PCA containing encapsulated silver nanoparticles in their polymeric shell. The structure of nanocomposites was characterized by TEM, DLS and spectroscopy methods.

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An insight into the novel covalent functionalization of multi-wall carbon nanotubes with pseudopeptide backbones for palladium nanoparticles immobilization: A versatile catalyst towards diverse cross-coupling reactions in bio-based solvents

Polyhedron ◽

10.1016/j.poly.2019.114238 ◽

2020 ◽

Vol 175 ◽

pp. 114238

Author(s):

Ronak Afshari ◽

Seyyed Emad Hooshmand ◽

Mojtaba Atharnezhad ◽

Ahmad Shaabani

Keyword(s):

Carbon Nanotubes ◽

Palladium Nanoparticles ◽

Cross Coupling ◽

Coupling Reactions ◽

The Novel ◽

Covalent Functionalization ◽

Multi Wall Carbon Nanotubes ◽

Cross Coupling Reactions ◽

Insight Into

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Microstructure, electrical conductivity, and wear behavior of aluminum-carbon nanotubes and biosynthesized silver nanoparticles composites

The International Journal of Advanced Manufacturing Technology ◽

10.1007/s00170-021-07151-x ◽

2021 ◽

Author(s):

Clifford Ugochukwu Nwoji ◽

Victor Sunday Aigbodion ◽

John Akpan John

Keyword(s):

Carbon Nanotubes ◽

Electrical Conductivity ◽

Silver Nanoparticles ◽

Wear Behavior

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Simple Method to Improve Electrical Conductivity of Films Made from Single-Walled Carbon Nanotubes

Nanomaterials ◽

10.3390/nano9081113 ◽

2019 ◽

Vol 9 (8) ◽

pp. 1113 ◽

Cited By ~ 6

Author(s):

Bogumiła Kumanek ◽

Tomasz Wasiak ◽

Grzegorz Stando ◽

Paweł Stando ◽

Dariusz Łukowiec ◽

...

Keyword(s):

Carbon Nanotubes ◽

Electrical Conductivity ◽

Single Walled Carbon Nanotubes ◽

Simple Approach ◽

Sonication Time ◽

Free Standing ◽

Simple Method ◽

New Approach ◽

Single Walled Carbon ◽

Walled Carbon Nanotubes

Despite the widespread use of sonication for individualization of nanomaterials, its destructive nature is rarely acknowledged. In this study, we demonstrated how exposure of the material to a hostile sound wave environment can be limited by the application of another preprocessing step. Single-walled carbon nanotubes (CNTs) were initially ground in a household coffee grinder, which enabled facile deagglomeration thereof. Such a simple approach enabled us to obtain high-quality CNT dispersion at reduced sonication time. Most importantly, electrical conductivity of free-standing films prepared from these dispersion was improved almost fourfold as compared with unground material eventually reaching 1067 ± 34 S/cm. This work presents a new approach as to how electrical properties of nanocarbon ensembles may be enhanced without the application of doping agents, the presence of which is often ephemeral.

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