scholarly journals Carbon nanotubes functionalized with copper hexacyanoferrate nanoparticles for a selective extraction of cesium from liquid waste

2018 ◽  
Vol 3 (2) ◽  
Author(s):  
H. Draouil ◽  
L. Alvarez ◽  
J. Causse ◽  
V. Flaud ◽  
M.A. Zaibi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Copper Ions ◽  
Liquid Waste ◽  
Single Walled Carbon Nanotubes ◽  
Selective Extraction ◽  
Carbon Supports ◽  
Copper Hexacyanoferrate ◽  
Single Walled Carbon ◽  
High Sorption ◽  
Walled Carbon Nanotubes

Single-walled carbon nanotubes are functionalized with copper hexacyanoferrate nanoparticles for the liquid-solid extraction of cesium from liquid waste and contaminated water. The functionalization process is followed mainly by x-ray photoemission spectroscopy. Indeed, determining the chemical environment around carbon or nitrogen atoms allows to evidence the formation of covalent bounding. In addition, the signatures of iron and copper ions give information on the effective growth of hexacyanoferrate nanoparticles. Furthermore, the cesium sorption mechanism is investigated by comparing the peak intensities associated to the response of potassium and cesium ions. Finally, based on the liquid chromatography analyzes, the sorption of cesium with the functionalized carbon supports is studied. The main results of this work are the demonstration of both a good selectivity of cesium trapping and a high sorption capacity by hybrid single-walled carbon nanotubes.

scholarly journals Copper hexacyanoferrate functionalized single-walled carbon nanotubes for selective cesium extraction

2017 ◽  
Vol 41 (15) ◽  
pp. 7705-7713 ◽  
Author(s):  
H. Draouil ◽  
L. Alvarez ◽  
J. Causse ◽  
V. Flaud ◽  
M. A. Zaibi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Copper Hexacyanoferrate ◽  
Single Walled Carbon ◽  
Cesium Ions ◽  
Solid Substrates ◽  
Walled Carbon Nanotubes

Single-walled carbon nanotubes (SWCNTs) are functionalized with copper hexacyanoferrate (CuHCF) nanoparticles to prepare solid substrates for sorption of cesium ions (Cs+) from liquid outflows.

Effects of the Molecular Weight of PCz on Selective Extraction of Large-Diameter Semiconducting Single-Walled Carbon Nanotubes

2021 ◽  
Vol 69 ◽  
pp. 11-21
Author(s):  
Ping Zhang ◽  
Wen Hui Yi ◽  
Bai Lei ◽  
Jin Feng Zhou ◽  
Yi Long Tian ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Weight ◽  
Arc Discharge ◽  
Large Diameter ◽  
Single Walled Carbon Nanotubes ◽  
Selective Extraction ◽  
High Yield ◽  
Extraction Technology ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Due to the difficulty in the selective synthesis of semiconductor (s-) and metal (m-) single-walled carbon nanotubes (SWCNTs), we still need to explore the selective extraction technology of s-SWCNTs. Using Poly[9-(1-octylonoyl)-9H-carbazole-2,7-diyl] (PCz) extraction of s-SWCNTs has attracted extensive attention in recent years, because it can selective extraction of large-diameter s-SWCNTs with high purity. However, influence of the molecular weight of this polymer on the s-SWCNTs selective extraction properties remains unclear. In this study, we used PCz with different average molecular weights to study the ability of selective extraction s-SWCNTs from pristine arc discharge carbon nanotubes. Spectra studies indicate that compared to the PCz with lower molecular weight, the PCz with higher molecular weight has better selective extraction ability, and can help to obtain s-SWCNTs with higher purity (>99%) and high yield. FETs devices have been prepared by s-SWCNTs obtained via PCz with higher molecular weight exhibit higher on/off ratio, lower off current and lower subthreshold swing. This work offers a reference of the design and synthesis of PCz polymer that performs sufficient selective ability in extracting s-SWCNTs with promising applications.

scholarly journals Aqueous electromigration of single-walled carbon nanotubes and co-electromigration with copper ions

Nanoscale ◽  
2018 ◽  
Vol 10 (41) ◽  
pp. 19628-19637 ◽  
Author(s):  
Pavan M. V. Raja ◽  
Gibran L. Esquenazi ◽  
Kourtney D. Wright ◽  
Cathren E. Gowenlock ◽  
Bruce E. Brinson ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Metal Ions ◽  
Functional Groups ◽  
Copper Ions ◽  
Single Walled Carbon Nanotubes ◽  
Surface Functional Groups ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

The direction of electromigration of SWCNTs in the absence of surfactant depends on the presence of catalyst residue, surface functional groups and adsorbed metal ions.

Hydrogen-bonded metallo-supramolecular polymers based on ruthenium or iron complexes for the selective extraction of single-walled carbon nanotubes

2018 ◽  
Vol 47 (40) ◽  
pp. 14195-14203 ◽  
Author(s):  
Shota Oka ◽  
Hiroaki Ozawa ◽  
Kai Yoshikawa ◽  
Tomiki Ikeda ◽  
Masa-aki Haga
Keyword(s):  
Carbon Nanotubes ◽  
Surface Modification ◽  
Single Walled Carbon Nanotubes ◽  
Iron Complexes ◽  
Selective Extraction ◽  
Supramolecular Polymers ◽  
Supramolecular Polymer ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
Hydrogen Bonded

Selective extraction of semiconducting SWNT via entangled surface modification by H-bonded metallo-supramolecular polymer was achieved.

Selective extraction of semiconducting single-walled carbon nanotubes with a thermoresponsive polymer

2018 ◽  
Vol 54 (24) ◽  
pp. 3026-3029 ◽  
Author(s):  
Eriko Shimura ◽  
Toshiki Sugai ◽  
Shota Kuwahara
Keyword(s):  
Phase Transition ◽  
Carbon Nanotubes ◽  
Electronic Properties ◽  
Single Walled Carbon Nanotubes ◽  
Selective Extraction ◽  
Thermoresponsive Polymer ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

The extraction of single-walled carbon nanotubes by exploiting the phase transition of poly(N-isopropylacrylamide) was performed to obtain homogenous electronic properties.

Supramolecular interactions of poly[(9,9-dioctylfluorenyl-2,7-diyl)-co- thiophene] with single-walled carbon nanotubes

2018 ◽  
Vol 7 (6) ◽  
pp. 487-495 ◽  
Author(s):  
Ping Zhang ◽  
Wenhui Yi ◽  
Hao Xu ◽  
Chao Gao ◽  
Jin Hou ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Selective Extraction ◽  
Dynamics Simulation ◽  
Supramolecular Interactions ◽  
Organic Photovoltaic Devices ◽  
Single Walled Carbon ◽  
Photovoltaic Applications ◽  
Transfer Behavior ◽  
Walled Carbon Nanotubes

AbstractEfficient selective extraction of semiconducting single-walled carbon nanotubes (s-SWCNTs) from as-synthesized SWCNTs is essential for their electronic and photovoltaic applications. In this study, we used a relatively simple copolymer backbone structure of poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-thiophene] (PFT) for the selective extraction of s-SWCNTs from HiPCO SWCNTs. The absorption and Raman spectroscopies indicated that the PFT-sorted s-SWCNTs had high purity which was far beyond the sensitivity of the spectrometers. Photoluminescence excitation spectroscopy showed that PFT mainly extracted the chiralities of (n,m)=(9,5), (8,6), (7,5), and (10,5) s-SWCNTs with the ratios of about 53.1%, 24.8%, 11.5%, and 10.5%, respectively. Both steady-state and transient optical spectroscopies suggested that there was a strong interaction between PFT and s-SWCNTs. Molecular dynamics simulation results agreed well with the experimental data. Additionally, the photoinduced energy transfer behavior of the PFT-wrapped s-SWCNT resultant hybrid was assessed. This work indicated that the prepared PFT-wrapped s-SWCNT hybrid material was attractive for organic photovoltaic devices.

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