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Carbon Nanofiber - Crossref

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Last Updated: 15 January 2023

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Evaluation of the effect of various catalysts on the yield of hydrogen and nanofiber carbon during pyrolysis of hydrocarbon gases

This paper offers a literary analysis of pyrolysis catalysts used to produce alternative energy fuels in the form of hydrogen as well as an equally useful product of nanofiber carbon. High-percent nickel and copper-nickel catalysts were found to be the most effective catalysts for industrial use. The 40Ni/SiO2 catalyst, with a yield of hydrogen when used is 80. 7 mol/gcat, and the highest yield of nanofiber carbon 449 g/gcat makes it possible to obtain a bimetallic catalyst /Al2O3.

Source link: https://doi.org/10.5510/ogp2022si100684


Size Control of Carbon Nanofiber Probes Fabricated by Ion Irradiation

In detail, the effect of ion species and processing temperature on the size of ion-induced carbon nanofibers grown on the tips of scanning probe microscope cantilevers was investigated in detail. The manufacture of CNF probes using Ne + and Xe + ions was also feasible, similar to that using Ar+ ions. The shortest CNF probes were delivered by Xe + sputtering for the shortest CNF probes due to the large sputtering effect; however, a significant difference in the CNF probes between Ne + and Ar + ion irradiation was not observed; however, there was no difference between Ne + and Ar+ ion irradiation sizes was not observed.

Source link: https://doi.org/10.1143/jjap.49.08lb15


High-Resolution Imaging of Plasmid DNA in Liquids in Dynamic Mode Atomic Force Microscopy Using a Carbon Nanofiber Tip

The real-time visualization of living DNA in liquids is important in understanding DNA and DNA complexes, as well as understanding the motion of DNA and DNA fragments. We present the high-resolution imaging of plasmid DNA in water using a rapid-scan atomic force microscopy device equipped with a carbon nanofiber probe. Small SiN cantilevers with a diameter of 2 0. 1 mm and a bent end were used as base cantilevers into which single CNFs were grown in order to produce a rapid high-resolution scan. An AFM image of a plasmid DNA extracted in water at 0. 2 fps using a batch-produced CNF-tipped cantilever clearly displayed the helix turns of the double strand DNA. Thus, it is predicted that the combination of the rapid-scan AFM system and the ion-induced CNF probe will be useful for biomolecule analysis.

Source link: https://doi.org/10.1143/jjap.50.08lb14


Li1.2Mn0.54Ni0.13Co0.13O2-Encapsulated Carbon Nanofiber Network Cathodes with Improved Stability and Rate Capability for Li-ion Batteries

The nanofiber coated Li 1. 2 Mn 0. 54 Mn 0. 53 C with a discharge capacity of 263. 7 mAh g 2. 2121 at 1 C and higher stability compared to the pristine particle counterpart demonstrated improved coulombic yield of 83. 5% and discharge capacity of 263. 7 mAh g u22121 at 1 C and greater stability. The improved electrochemical results come from the novel network configuration that provides fast transport channels for electrons and lithium ions, as well as the outer carbon, which acts as a shield layer, preventing the inner oxides from reacting with HF in the electrolyte during charge-discharge cycling.

Source link: https://doi.org/10.1038/srep11257


Flexible Sensing Arrays Fabricated with Carbon Nanofiber Composite Thin Films for Posture Monitoring

A faulty position raises joint strain and contributes to postural pain syndrome. We present a portable strain sensing system with flexible sensor arrays in this issue to warn patients of inappropriate posture. Atmospheric plasma was used to increase or reduce the surface energy in designated areas for patterned surface treatment. Human posture can be accurately captured by analyzing the measured strains from a variety of strain sensing arrays, according to the findings.

Source link: https://doi.org/10.1143/jjap.50.06ge08


Hierarchically mesoporous CuO/carbon nanofiber coaxial shell-core nanowires for lithium ion batteries

In a nanoparticle-stacked CuO shell, the CuO shell stacked with nanoparticles grows radially toward the CNF core, which is a three-dimensional, porous three-dimensional shell-core unit with abundant inner spaces. At 100 mA g u22121, the CuO/CNF nanowires achieve an initial capacity of 1150 mAh g u22121 at 100 mA g u22121 without showing obvious decline after 50 cycles.

Source link: https://doi.org/10.1038/srep09754


Development of Kovacs model for electrical conductivity of carbon nanofiber–polymer systems

This report provides a schematic representation of the electrical conductivity of polymer carbon nanofiber nanocomposites, which includes two steps. The CNF, interphase, and tunneling regions are considered as dissimilar zones in the system in the first step. Although several earlier models were used to predict the electrical conductivity of PCNFs, the Kovacs model provides a more accurate picture of the effect of key factors on the nanocomposite conductivity. The lowest conductivity of PCNF has been achieved as 0. 019 S/m at the lowest ranges of polymer tunnel resistance and tunneling distance, although the lowest amounts of these parameters are ineffective in causing a conductive sample. Also, an excellent conductivity in PCNF is due to the high CNF volume fraction, poor waviness, long and thin CNF, low u201d, thick interphase, high CNF conduction, a large percentage of percolated CNFs, low percolation onset, and high interphase conductivity.

Source link: https://doi.org/10.1038/s41598-022-26139-5


Electroactive Hydroxyapatite/Carbon Nanofiber Scaffolds for Osteogenic Differentiation of Human Adipose-Derived Stem Cells

Traditional bone defect treatments are limited by a lack of autologous bone, autologous bone transplant rejection of allogeneic bone grafts, and high medical costs. The use of electroactive scaffolds has emerged as a common bone repair tactic among existing tissue engineering products. The results of this research show that electroactive carbon materials with a fibrous structure can contribute to the osteogenic differentiation of h-ADSCs, enabling a new approach for the production and application of carbon-based materials in bone tissue engineering.

Source link: https://doi.org/10.3390/ijms24010530


Composite nanofiber formation using a mixture of cellulose acetate and activated carbon for oil spill treatment

Composites were made from 10% polymer solutions dissolving in DMA/acetone ratio 1:3 with three different percentages of AC to the total weight of CA. Randomly oriented bead-free fibers with submicron fiber diameters are found in the prepared CA/AC nanofiber composite morphology. At different pH, water uptake was investigated for manufactured fibers. Oil adsorption was conducted in both static and dynamic systems to determine the adsorption capacity of prepared composites to treat heavy and light machine oils. The results showed an increase in oil absorption capacity by adding activated carbon to CA nanofiber mats, which led to increased oil adsorption capacity. After the second recycles in the reusability test, a higher oil uptake was recorded for the CA/AC composite nanofibers and revealed a constant sorption capacity. The Freundlich isotherm model was the most appropriate model for isotherm models, according to isotherm models. The adaptability of the pseudo-second-order kinetic model to the adsorption apparatus was shown by the results of kinetic experiments.

Source link: https://doi.org/10.1007/s11356-022-24982-7

* 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