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Carbon Nanotubes - PubMed

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Last Updated: 04 November 2022

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Computational study of effect of radiation induced crosslinking on the properties of flattened carbon nanotubes.

Flattened carbon nanotubes are a key component of several carbon nanotube yarn and sheet products, and they are promising reinforcements for the next generation of ultra-strong composites for aerospace applications. Both orientations increase the flCNT interfacial load transfer for both orientations, but degrades the flCNT tensile response. Also though individual flCNTs loses some mechanical fidelity with crosslinking, it is clear that irradiation-induced crosslinking is most effective in CNT-based composite systems in which interfacial load transfer between flCNTs is of primary importance, even though individual flCNTs may lose some mechanical fidelity with crosslinking.

Source link: https://doi.org/10.1039/d2ra05550c


Self-Promoting Energy Storage in Balsa Wood-Converted Porous Carbon Coupled with Carbon Nanotubes.

The hierarchical structure of balsa wood is preserved in the converted carbon, which is used as a supporting framework to produce electrodes for supercapacitors in this series. Two advantages include one offering more surface area to raise capacitance by electric double layer capacitance, and two others offering more prominent Fe and Ni locations to participate in the redox reaction to raise capacitance of the balsa carbon nanotubes electrode. The balsa carbon/CNTs exhibit a high area capacitance of 1940 mF cm-2.

Source link: https://doi.org/10.1002/smll.202200272


Non-covalent modification of single wall carbon nanotubes (SWCNTs) by thienothiophene derivatives.

In recent studies, non-covalent functionalization of single wall carbon nanotubes was achieved by using multiple binding agents with surface u03c0-interaction forces. As a representative, taking advantage of the presence of sulfur atoms in TT's HYBRID 1's shell, HYBRID 1, was treated with Au nanoparticles for the adsorption of Au by sulfur atoms, which resulted in clear TEM photos of the particles. Hence, the presence of sulfur atoms in TT units contributed to the linking of TTs to SWCNTs, which was confirmed by TEM analysis by the presence of sulfur atoms. Maximum interaction energies were increased to 316. 89 kcal mol-1, which were determined using density functional theory.

Source link: https://doi.org/10.1039/d2nr04582f


Click-Chemistry-Mediated Synthesis of Silver Nanoparticle-Supported Polymer-Wrapped Carbon Nanotubes: Glucose Sensor and Antibacterial Material.

For the non-enzymatic glucose sensing and antibacterial activity applications, we introduce a new strategy for the synthesis of silver nanoparticles stabilized on polymer-wrapped carbon nanotubes. Not only does AgNPs but also simple electron-transfer reactions, but also simpler electron-transfer reactions, demonstrating greater performance.

Source link: https://doi.org/10.1021/acsomega.2c02832


Self-assembly for preparing nanotubes from monolayer graphyne ribbons on a carbon nanotube.

In recent years, graphyne nanotubes, a form of promising one-dimensional carbon materials, have received a lot of attention from researchers and engineers alike. This research reveals the possibility of fabricating a GNT by self-assembling a monolayer graphyne ribbon on a carbon nanotube by theoretical and numerical evaluation. The van der Waals' CNT, a GY ribbon near the tube first winds on the tube and then conditionally self-assembles to form a GNT, and Triggered by the van der Waals force from the tube. The range of temperatures that contributes to self-assembly's success is addressed in these Molecular dynamic simulation results.

Source link: https://doi.org/10.1088/1361-6528/ac9d45


Ferric Ions Crosslinked Epoxidized Natural Rubber Filled with Carbon Nanotubes and Conductive Carbon Black Hybrid Fillers.

The compounds were mixed with ferric ion as a crosslinking agent, and natural rubber with 50 percent epoxidation was filled with carbon nanotubes and conductive carbon black hybrid fillers with various CCB loadings of 2. 5, 5. 0, 7. 0, 10. 0, and 15. 0 phr. Superior properties to ENR vulcanizates were provided by a combination of 7 phr CNT and CCB with loading higher than 2. 5 phr. In addition, the secondary CCB filler contributes to CNT dispersion in the ENR matrix by linking the CNT capsules and establishing CNT-CCB-CCB-CCB pathways and, in turn, solid CNT-CCB networks, indicating the change in the tensile properties, bound rubber content, and dynamic properties of the ENR composites. In addition, the ENR filled with CNTs without CCB composite was found with increased electrical conductivity with a relatively low percolation threshold of the hybrid composites.

Source link: https://doi.org/10.3390/polym14204392


Electrically Conductive Adhesive Based on Thermoplastic Hot Melt Copolyamide and Multi-Walled Carbon Nanotubes.

There is a new group of thermoplastic hot melt adhesives that are quick to use, solidify quickly, and are environmentally friendly among many solvent-based adhesives. Using a melt-blending process, a copolyamide-based hot melt adhesive was mixed with 5 and 10 wt% of carbon nanotubes to make them electrically conductive. The carbon nanotubes increased the thermal stability of 20 u00b0C and elevated the glass transition temperature of ten u00b0C to a higher degree. Polymer and carbon nanotubes have strong interactions in tandem storage and loss modulus with simultaneous increase in storage and loss modulus.

Source link: https://doi.org/10.3390/polym14204371


Heterostructures of Cut Carbon Nanotube-Filled Array of TiO2 Nanotubes for New Module of Photovoltaic Devices.

As a photoanode and multi-walled carbon nanotubes as a photosensitizer, the device uses titanium foil/TiO2 nanotubes. Titanium dioxide nanotube arrays were made by one-step anodic oxidation. MWCNTs cut-MWCNTs with a length of less than 100 nm were obtained by MWCNTs' mixed-acid oxidation of MWCNTs. It is hoped that this study will give a reference point for the use of carbon nanotubes in photovoltaic devices.

Source link: https://doi.org/10.3390/nano12203604


Sulfide-Doped Magnetic Carbon Nanotubes Developed as Adsorbent for Uptake of Tetracycline and Cefixime from Wastewater.

For trace extraction of cefixime and tetracycline antibiotics from urine and drug company wastewater, a magnetic nanoparticle-based multi-wall carbon nanotubes decorated with magnetic nanoparticles and cadmium sulfide nanoparticles was developed in this research. Moreover, kinetic of reaction was consensing with pseudo-second-order as opposed to pseudo-first-order. Both 116. 27 and 105. 26 mg'u00b7g-1 respectively, the maximum adsorption capacity for tetracycline and cefixime was reached at 116. 27 and 105. 26 mg/g-1. Hence, the prepared adsorbent can be used as an alternative component for enhanced determination of pharmaceutical compounds in biological fluids.

Source link: https://doi.org/10.3390/nano12203576


Plasma Functionalization of Multi-Walled Carbon Nanotubes for Ammonia Gas Sensors.

For room-temperature ammonia gas sensors, the role of plasma functionalization of multi-walled carbon nanotubes was investigated. Plasma functionalization of MWCNTs with maleic anhydride was carried out at various lengths. Functional groups on the surface of carbon nanotubes, according to a rise in the ammonia sensor response from two to four times.

Source link: https://doi.org/10.3390/ma15207262

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions