Solvent Effect on Functional Groups Attached to Edges of Carbon Nanotubes

Nano Letters ◽  
2002 ◽  
Vol 2 (6) ◽  
pp. 573-575 ◽  
Author(s):  
T. Halicioglu ◽  
R. L. Jaffe
Keyword(s):  
Carbon Nanotubes ◽  
Solvent Effect ◽  
Functional Groups

Electron Promotion by Surface Functional Groups of Single Wall Carbon Nanotubes to Overlying Metal Particles in a Fuel-Cell Catalyst

2012 ◽  
Vol 124 (28) ◽  
pp. 7104-7107 ◽  
Author(s):  
Patraporn Luksirikul ◽  
Karaked Tedsree ◽  
Mark G. Moloney ◽  
Malcolm L. H. Green ◽  
Shik Chi Edman Tsang
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cell ◽  
Functional Groups ◽  
Metal Particles ◽  
Single Wall Carbon Nanotubes ◽  
Surface Functional Groups ◽  
Single Wall Carbon ◽  
Fuel Cell Catalyst

Pebax-1657 mixed matrix membrane containing surface modified multi-walled carbon nanotubes for gas separation

RSC Advances ◽  
2016 ◽  
Vol 6 (83) ◽  
pp. 79563-79577 ◽  
Author(s):  
S. A. Habibiannejad ◽  
A. Aroujalian ◽  
A. Raisi
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Functional Groups ◽  
Gas Separation ◽  
Mixed Matrix Membrane ◽  
Mixed Matrix ◽  
Multi Walled Carbon Nanotubes ◽  
Surface Modified ◽  
Walled Carbon Nanotubes

In this study different functional groups on the surface of carbon nanotube enhanced the performance of Pebax 1657/MWNTs.

scholarly journals CVD Synthesis, Functionalization and CO2 Adsorption Attributes of Multiwalled Carbon Nanotubes

Processes ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 634 ◽  
Author(s):  
Shazia Shukrullah ◽  
Muhammad Yasin Naz ◽  
Norani M. Mohamed ◽  
Khalid A. Ibrahim ◽  
Nasser M. AbdEl-Salam ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Nanotubes ◽  
Adsorption Capacity ◽  
Multiwalled Carbon Nanotubes ◽  
Functional Groups ◽  
Co2 Adsorption ◽  
Breakthrough Curves ◽  
Multiwalled Carbon ◽  
Amine Functionalized ◽  
Co2 Adsorption Capacity

Carbon dioxide is one of the major greenhouse gases and a leading source of global warming. Several adsorbent materials are being tested for removal of carbon dioxide (CO2) from the atmosphere. The use of multiwalled carbon nanotubes (MWCNTs) as a CO2 adsorbent material is a relatively new research avenue. In this study, Fe2O3/Al2O3 composite catalyst was used to synthesize MWCNTs by cracking ethylene gas molecules in a fluidized bed chemical vapor deposition (CVD) chamber. These nanotubes were treated with H2SO4/HNO3 solution and functionalized with 3-aminopropyl-triethoxysilane (APTS). Chemical modification of nanotubes removed the endcaps and introduced some functional groups along the sidewalls at defected sites. The functionalization of nanotubes with amine introduced carboxylic groups on the tube surface. These functional groups significantly enhance the surface wettability, hydrophilicity and CO2 adsorption capacity of MWCNTs. The CO2 adsorption capacity of as-grown and amine-functionalized CNTs was computed by generating their breakthrough curves. BELSORP-mini equipment was used to generate CO2 breakthrough curves. The oxidation and functionalization of MWCNTs revealed significant improvement in their adsorption capacity. The highest CO2 adsorption of 129 cm3/g was achieved with amine-functionalized MWCNTs among all the tested samples.

Nitrile N-oxides in programmable one-pot functionalization of multi-wall carbon nanotubes via 1,3-dipolar cycloaddition

RSC Advances ◽  
2016 ◽  
Vol 6 (68) ◽  
pp. 64129-64132 ◽  
Author(s):  
A. P. Herman ◽  
S. Boncel
Keyword(s):  
Carbon Nanotubes ◽  
Functional Groups ◽  
Dipolar Cycloaddition ◽  
One Pot ◽  
Multi Wall Carbon Nanotubes

Multi-wall carbon nanotubes (MWCNTs) were one-pot functionalized with a series of nitrile N-oxides as 1,3-dipoles carrying diverse functional groups.

The effects of microwave regeneration on adsorptive performance of functionalized carbon nanotubes

2016 ◽  
Vol 73 (11) ◽  
pp. 2638-2643 ◽  
Author(s):  
Shahab Karimifard ◽  
Mohammad Reza Alavi Moghaddam
Keyword(s):  
Carbon Nanotubes ◽  
Functional Groups ◽  
Dye Molecules ◽  
Functionalized Carbon Nanotubes ◽  
Microwave Regeneration ◽  
High Regeneration ◽  
Cnts Surface ◽  
Sudden Decrease ◽  
Adsorption Desorption ◽  
Very High

In this study, the microwave regeneration method was applied to investigate the properties and adsorptive performance of functionalized carbon nanotubes (f-CNTs) in different cycles of regeneration/reuse. For this purpose, an organic and hazardous dye (Reactive Blue 19) was chosen as a widely used pollutant. N2 adsorption/desorption isotherms, scanning electron microscopy and Fourier transform infrared spectroscopy were used to characterize f-CNTs during the regeneration/reuse procedure. The morphology, specific surface area and pore volume of f-CNT samples were not significantly altered. However, the functional groups present on the f-CNTs’ surface were gradually removed after successive cycles of regeneration/reuse. A sudden decrease of adsorption capacity (about 20%) after the first cycle of regeneration/reuse was attributed to the elimination of functional groups interacting with the dye molecules because of the molecular-level heating. Relatively high regeneration efficiencies (73.30 to 80.16%) proved that the microwave regeneration method was successful. Very high step stripping efficiencies (80.16 to 98.02%) in four cycles of regeneration/reuse demonstrated that the microwave regeneration method could be utilized in consecutive cycles. After four cycles of regeneration/reuse, the CNTs could not be considered as functionalized.

The role of solvents and oxygen-containing functional groups on the adsorption of Bisphenol A on carbon nanotubes

2020 ◽  
pp. 1-9
Author(s):  
Dong Yang ◽  
Peng Gao ◽  
Xin Ren ◽  
Yifan Niu ◽  
Zhenfen Wu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Bisphenol A ◽  
Functional Groups
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