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Journal articles on the topic 'Nanoparticules de Carbone'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Décologne, N., G. Wettstein, C. Garrido, P. Camus, and P. Bonniaud. "Fibrose pleuropulmonaire induite par la bléomycine : rôle des nanoparticules de carbone ?" Revue des Maladies Respiratoires 25, no. 9 (November 2008): 1182. http://dx.doi.org/10.1016/s0761-8425(08)75043-5.

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2

Blanc Béguin, F., P. Eliès, N. Kervarec, P. Robin, R. Tripier, C. Lemarié, S. Hennebicq, V. Cogulet, P. Y. Salaün, and P. Y. Le Roux. "Nanoparticules de carbone marquées au Ga-68 pour la TEP de ventilation pulmonaire : étude des propriétés physiques et comparaison au Technegas®." Médecine Nucléaire 44, no. 2 (March 2020): 88. http://dx.doi.org/10.1016/j.mednuc.2020.01.092.

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3

Decologne, N., C. Mirjolet, C. Garrido, P. Camus, and P. Bonniaud. "069 La co-administration de nanoparticules de carbone est nécessaire à la toxicité fibrosante de la bléomycine dans un modèle de fibrose pleurale." Revue des Maladies Respiratoires 24, no. 9 (November 2007): 1225. http://dx.doi.org/10.1016/s0761-8425(07)74360-7.

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4

TabkhPaz, Majid, Dong-Yeob Park, Patrick C. Lee, Ron Hugo, and Simon S. Park. "Development of nanocomposite coatings with improved mechanical, thermal, and corrosion protection properties." Journal of Composite Materials 52, no. 8 (July 21, 2017): 1045–60. http://dx.doi.org/10.1177/0021998317720001.

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In this study, new composite coatings are fabricated and investigated for their applications as the metal coating. The studied coatings consist of two-layered composites with various nanoparticulates as fillers in a polymeric matrix (styrene acrylic). The first layer bonded to the steel plate uses a combination of zinc particles, multi-walled carbon nanotubes, and graphene nanoplatelets. For the second layer, hexagonal boron nitride with high electrical insulation properties is added to the matrix. The morphology of the nanoparticulates is conducted using a scanning electron microscope. The coefficient of thermal expansion, cathodic disbondment resistance, gas penetration, and scratch resistance of the coatings are evaluated. The corroded area on the cathodic disbondment test specimens reduced down up to 90% for the composite with zinc (20 wt%), multi-walled carbon nanotubes (2 wt%), and graphene nanoplatelets (2 wt%), compared to a specimen coated with a pure polymer. It is seen that the presence of nanoparticulates decreased gas permeation and thermal expansion of the matrix by 75% and 65%, respectively. The addition of nanoparticulates also enhanced scratch resistance of the coating composites.

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5

Leonhardt, Christian, Andreas Seifert, Szilard Csihony, Heino Sommer, and Michael Mehring. "Nanocomposites by the use of simultaneous twin polymerization: tin alloys in a carbon/silica matrix." RSC Advances 6, no. 4 (2016): 3091–98. http://dx.doi.org/10.1039/c5ra18574b.

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6

Swamy, S. Srikanta, Jose Maria Calderon-Moreno, and Masahiro Yoshimura. "Stability of single-wall carbon nanotubes under hydrothermal conditions." Journal of Materials Research 17, no. 4 (April 2002): 734–37. http://dx.doi.org/10.1557/jmr.2002.0106.

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The stability of single-wall carbon nanotubes under hydrothermal conditions (100 MPa pressure, from 30 min to 48 h in the temperature range from 200 to 800 °C) has been investigated. The resultant products were characterized by Raman spectroscopy, x-ray diffraction, and transmission electron microscopy. The stability range of single-wall carbon nanotubes (SWCNTs) under hydrothermal conditions suggests that they, similar to fullerenes, can only survive mild and short-term treatment in high-temperature, high-pressure water. SWCNTs gradually transform into multiwall carbon nanotubes (MWCNTs) and polyhedral graphitic nanoparticules. After 48 h at 750 °C only the Raman spectra characteristic of graphitic carbon were observed. Transmission electron microscopy revealed that after 800 °C and 48 h of treatment SWCNTs fully transformed into MWCNTs and polyhedral carbon nanoparticles.

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7

Torres Suárez, Ana Babel. "La nanotecnología aplicada al desarrollo de medicamentos." Diagnóstico 55, no. 1 (December 17, 2018): 33–37. http://dx.doi.org/10.33734/diagnostico.v55i1.161.

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En este trabajo se realiza una revisión de sus principales estrategias deflnidas en una fecha para el desarrollo de sistemas nanoparticulares farmacéuticos y de interés en terapéutica. Se trata de Uposomas, nanoparticulares poliméricas, dendimetros, conjugados pollmérlcos y con antlcuerpos, nanotabos de carbono y otros nanotransportadores, que tras su adminsión posibilitan la vectorlzación o local selectiva de la sustancia que transportan a nivel de los órganos, de un tejido, de un tipo específico de células o Incluso a nivel de organos celulares concretos. En la actualidad, sus principales dianas en vectorlzación son las células tumorales y la neovascularlzación tumoral, las células del sistema fagocítico mononuclear y las células sonu\ticas dañadas.La vectorización a estas dianas se puede alcanzar mediante un mecanismo pasivo, un mecanismo mediado por un desencadenante externo o un mecanismo activo.

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8

Uğurlu, M., H. Osman, A. İ. Vaizoğullar, and A. J. Chaudhary. "FLUOROQUINOLONES ANTIBIOTICS ADSORPTION ONTO POLYMER COATED MAGNETIC NANOPARTICULAR ACTIVATED CARBON." International Journal of Engineering Science Technologies 5, no. 2 (April 11, 2021): 81–104. http://dx.doi.org/10.29121/ijoest.v5.i2.2021.172.

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The present study investigated the adsorption of molecular fluoroquinolone (FLQ) from aqueous solution onto active carbon (AC), magnetic activated carbon (MagAC), styrene-butadiene styrene magnetic activated carbon (SBS/MagAC) and poly charbon magnetic activated carbon (PC/MagAC) as adsorbent materials. The process optimization was carried by investigating the effects of pH, temperature, solid-liquid ratio, adsorbent type and initial concentration of FLQ. The data showed that adsorption reached equilibrium in as little as one hour. The adsorption cacapcity was comparatively less at low pH values than at approximately pH 5.0. The results also showed that the polymer coated magnetic materials did not perform very well at high pH values. However, all the materials performed well at room temperature when the situation was examined in terms of kinetics. It was also observed that AC, SBS/MagAC and PC/MagAC are more effective than MagAC to remove FLQ from aqueous medium. The kinetic data support pseudo-second-order model (r2 ⩾ 0.95) but showed very poor fit for pseudo-first-order model (r2 ≤ 0.90). Intra-particle model also showed that there were two separate stages in sorption process, namely, external diffusion and the diffusion of inter-particle. Adsorption isotherms for all adsorbends were fitted to Langmuire models more effectively than Freundlich models (r2 ⩾ 0.98). Thermodynamics parameters such as; free energy (ΔG0), enthalpy (ΔH0) and entropy (ΔS0) were also calculated. In conclusion, our results revealed that FLQ can be removed more easily from the aqueous medium by using magnetic and polymeric material.

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9

Zeynalov, Eldar, Manfred Wagner, Joerg Friedrich, Matanat Magerramova, and Nazilya Salmanova. "Antioxidant Traits of Some Nanocarbon Moieties Integrated in Polymer Materials (a Review)." Chemistry & Chemical Technology 10, no. 4s (December 25, 2016): 581–86. http://dx.doi.org/10.23939/chcht10.04si.581.

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This review briefly gives the status of worldwide researches in the aspect of an impact of incorporated fullerenes and carbon nanotubes (CNTs) on durability of different polymeric composites under stressful harsh therm-oxidative conditions. It has been inferred that among various nanoparticulates, fullerenes and CNTs are preferable to be used for enhancing thermal and mechanical properties of polymers. Fullerenes C60, C70, fullerene soot and CNTs being integrated in polymer matrix effectively prevent both their thermal and thermoxidative degradation, and photooxidation processes as well.

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10

Zhou, Xia, Depeng Su, Chengwei Wu, and Liming Liu. "Tensile Mechanical Properties and Strengthening Mechanism of Hybrid Carbon Nanotube and Silicon Carbide Nanoparticle-Reinforced Magnesium Alloy Composites." Journal of Nanomaterials 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/851862.

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AZ91 magnesium alloy hybrid composites reinforced with different hybrid ratios of carbon nanotubes (CNTs) and silicon carbide (SiC) nanoparticulates were fabricated by semisolid stirring assisted ultrasonic cavitation. The results showed that grains of the matrix in the AZ91/(CNT + SiC) composites were obviously refined after adding hybrid CNTs and SiC nanoparticles to the AZ91 alloy, and the room-temperature mechanical properties of AZ91/(CNT + SiC) hybrid composites were improved comparing with the unreinforced AZ91 matrix. In addition, the tensile mechanical properties of the AZ91 alloy-based hybrid composites were considerably improved at the mass hybrid ratio of 7 : 3 for CNTs and SiC nanoparticles; in particular, the tensile and yield strength were increased, respectively, by about 45 and 55% after gravity permanent mould casting. The reason for an increase in the room-temperature strength of the hybrid composites should be mainly attributable to the larger hybrid ratio of CNTs and SiC nanoparticles, the coefficient of thermal expansion (CTE) mismatch between matrix and hybrid reinforcements, the dispersive strengthening effects (Orowan strengthening), and the grain refining (Hall-Petch effect).

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11

Aliofkhazraei, Mahmood, and Alireza Sabour Rouhaghdam. "Study of Growth Process for Functionally Gradient Nanocomposite Coating Fabricated by Plasma Electrolytic Carburizing." Journal of Nano Research 18-19 (July 2012): 213–18. http://dx.doi.org/10.4028/www.scientific.net/jnanor.18-19.213.

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In this paper, plasma electrolytic carburizing has been applied on the commercially pure titanium substrates in an organic based electrolyte with presence of some hard tungsten carbide nanoparticulates in suspension state. Pulsed current with variable duty cycle has been used for fabrication of functionally gradient nanocomposite coating. As a result, a hard nanocomposite layer has been formed on the surface of the samples with complex titanium carbide as its matrix and tungsten carbide nanoparticulates as its reinforced phase. In addition of used SEM, TEM and AFM for evaluation of coating nature, the presence of tungsten in different depths of formed layer has been followed by means of EDS. The effects of rate of variable duty cycle of applied pulsed current or treatment time have been described. Hardness profiles showed that the higher rates for variable duty cycles will cause lower hardness and sharper profilesThis document explains and demonstrates how to prepare your camera-ready manuscript for Trans Tech Publications. The best is to read these instructions and follow the outline of this text. The text area for your manuscript must be 17 cm wide and 25 cm high (6.7 and 9.8 inches, resp.). Do not place any text outside this area. Use good quality, white paper of approximately 21 x 29 cm or 8 x 11 inches (please do not change the document setting from A4 to letter). Your manuscript will be reduced by approximately 20% by the publisher. Please keep this in mind when designing your figures and tables etc.

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12

Geohegan, D. B., H. Schittenhelm, X. Fan, S. J. Pennycook, A. A. Puretzky, M. A. Guillorn, D. A. Blom, and D. C. Joy. "Condensed phase growth of single-wall carbon nanotubes from laser annealed nanoparticulates." Applied Physics Letters 78, no. 21 (May 21, 2001): 3307–9. http://dx.doi.org/10.1063/1.1371796.

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13

Khasanov, Airat, Jian He, Jay Gaillard, Keqin Yang, Apparao M. Rao, C. Michelle Cameron, J. M. Schmeltzer, John G. Stevens, and Amar Nath. "The role of γ-iron nanoparticulates in the growth of carbon nanotubes." Applied Physics Letters 93, no. 1 (July 7, 2008): 013103. http://dx.doi.org/10.1063/1.2937125.

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14

Li, Kang, Zhanwei Xu, Xuetao Shen, Kai Yao, Jianshe Zhao, Ronglan Zhang, Jun Zhang, Li Wang, and Jianfeng Zhu. "Cobalt tetrapyridinoporphyrazine nanoparticulates anchored on carbon nanotubes for long-voltage Li/SOCl2 batteries." Electrochimica Acta 295 (February 2019): 569–76. http://dx.doi.org/10.1016/j.electacta.2018.10.178.

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15

Amiri, Mandana, Farahnaz Rezapour, and Abolfazl Bezaatpour. "Hydrophilic carbon nanoparticulates at the surface of carbon paste electrode improve determination of paracetamol, phenylephrine and dextromethorphan." Journal of Electroanalytical Chemistry 735 (December 2014): 10–18. http://dx.doi.org/10.1016/j.jelechem.2014.10.006.

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16

Wei, Xue Yong, and Kyle Jiang. "Synthesis and Characterization of Nanoparticulate Strengthened Nickel Microcomponents." Advances in Science and Technology 54 (September 2008): 299–304. http://dx.doi.org/10.4028/www.scientific.net/ast.54.299.

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In this study, microcomponents of nickel (Ni) based nanocomposite were obtained by electrochemical co-deposition of Ni and alumina (Al2O3) nanoparticles into the microfabricated photoresist moulds from a nickel sulfamate bath with the presence of multi-wall carbon nanotubes (MWCNTs). The examination of dispersion behaviour of Al2O3 nanoparticles in nickel sulfamate bath with MWCNTs showed that the surfaces of the fillers are positively charged in a wide range of pH value, which favours the co-deposition of Al2O3 nanoparticles and MWCNTs with Ni. Results of SEM and EDX characterizations showed that the Al2O3 nanoparticles were uniformly distributed in the Ni matrix and their contents were improved with the presence of MWCNTs in the solution. It was also found that the mechanical properties of Ni were enhanced by the nanoparticulates in the Ni matrix.

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17

Steuwe, Christian, Hannelore Bové, Jan Clerinx, Martin vandeVen, Eduard Fron, Tim Nawrot, Marcel Ameloot, and Maarten Roeffaers. "Rapid and label-free optical detection of individual carbon air pollutant nanoparticulates in biomedical samples." Journal of Biophotonics 11, no. 5 (January 30, 2018): e201700233. http://dx.doi.org/10.1002/jbio.201700233.

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18

Mahanta, Sweety, M. Chandrasekaran, and Sutanu Samanta. "New Emerging Al7075 Based Hybrid Nanocomposite for Automotive Applications: A Sustainability Approach." Key Engineering Materials 856 (August 2020): 29–35. http://dx.doi.org/10.4028/www.scientific.net/kem.856.29.

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Aluminium matrix composites (AMCs) have emerged as the substitute for the monolithic (unreinforced) materials over the past few decades. The applications of AMCs are common in automotive, aerospace, defence and biomedical sectors due to its lower weight, high strength, high resistance against corrosion and high thermal and electrical conductivity. In this work, it is aimed fabricate a new class Al 7075 based hybrid composites reinforcing with nanoparticulates suitable for automotive application. Al7075 reinforced with fixed quantity of boron carbide (B4C) (1.5 wt.%) and varying wt % of flyash (0.5 wt.%, 1.0 wt.%, 1.5 wt.%) is fabricated using ultrasonic-assisted stir casting technique. Physical and mechanical characterization such as density, porosity, micro hardness, tensile strength and impact strength were estimated for three different compositions. The tensile strength and percentage increase in hardness value of the nanocomposite Al7075-B4C (1.5 wt. %)-flyash (0.5 wt. %): HNC3 found maximum as 294 MPa and 32.93%. In comparison with Al7075 alloy the impact strength of HNC3 shows the highest percentage of 9.31% respectively.

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19

Alhaddad, Maha, R. M. Navarro, M. A. Hussein, and R. M. Mohamed. "Co3O4/g-C3N4 Nanocomposites Prepared via Ultrasonication as Active Photocatalyst for H2 Generation Beneath Visible Light." Nanoscience and Nanotechnology Letters 12, no. 3 (March 1, 2020): 285–95. http://dx.doi.org/10.1166/nnl.2020.3106.

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In this paper, we introduce an active photocatalyst for hydrogen generation from aqueous glycerol solution on nanoheterojunctions of graphitic carbon nitride (g-C3N4) and Co3O4 at various Co3O4 loading (1∼4 wt.%). The Co3O4 nanoparticulates were efficiently spread on the exterior of exfoliated mesoporous g-C3N4 by means of ultrasonication-mixture method that allowed the formation of effective Co3O4/g-C3N4 heterojunctions that minimized high recombination of charges observed on bare g-C3N4. The formation of nanoheterojunctions amid Co3O4 and g-C3N4 was demonstrated by XPS and HRTEM. Moreover, their number and efficiency in separation of charges depended on Co3O4 loading (maximum efficiency at 3 mol% of Co3O4). The optimal Co3O4/g-C3N4 nanocomposite demonstrated 22.5 and 33.7 times higher H2 production using visible light compared to the parent g-C3N4 and Co3O4 systems, respectively. The differences in photocatalytic action for the Co3O4/g-C3N4 composites was examined in terms of changes in their capacity to engross the light and to diminution the electron-hole recombination associated with different development of nanoheterojunctions in the composites.

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20

Bilal, Muhammad, Anwar Saeed, Taza Gul, Ishtiaq Ali, Wiyada Kumam, and Poom Kumam. "Numerical Approximation of Microorganisms Hybrid Nanofluid Flow Induced by a Wavy Fluctuating Spinning Disc." Coatings 11, no. 9 (August 27, 2021): 1032. http://dx.doi.org/10.3390/coatings11091032.

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The analysis explored a numerical simulation of microorganisms, carbon nanotubes (CNTs) and ferric oxide water-based hybrid nanofluid flow induced by a wavy fluctuating spinning disc with energy propagation. In the presence of CNTs and magnetic nanoparticulates, the nanofluid is synthesized. The exceptional tensile strength, flexibility, and electrical and thermal conductivity of carbon nanotubes and iron nanoparticles have been extensively reported. The motive of the proposed analysis is to optimize thermal energy conveyance efficiency for a spectrum of industrial and biomedical applications. The phenomena have been expressed as a system of partial differential equations (PDEs) which contain the momentum, energy, concentration, and motile microorganism equations. The modeled equations have been diminished to the dimensionless system of nonlinear ODEs through a similarity framework. The Matlab built-in package boundary value solver has been utilized to solve the obtained system of ODEs. The findings are compared to the PCM technique for validity purposes. The results are illustrated graphically and discussed. The layout of a rotating disc has a positive effect on energy transition and velocity profile. The irregular rotating surface increases energy progression up to 15% relative to a smooth surface. The accumulation of nanocomposites (CNTs and magnetic nanoparticles) significantly enhanced the thermal capabilities of the liquid medium. When operating with a low distribution, it is more impactful.

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21

Akbarpour, M. R., E. Salahi, F. Alikhani Hesari, A. Simchi, and H. S. Kim. "Fabrication, characterization and mechanical properties of hybrid composites of copper using the nanoparticulates of SiC and carbon nanotubes." Materials Science and Engineering: A 572 (June 2013): 83–90. http://dx.doi.org/10.1016/j.msea.2013.02.039.

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22

Soto, K., L. Murr, and K. Garza. "Cytotoxic Responses and Potential Respiratory Health Effects of Carbon and Carbonaceous Nanoparticulates in the Paso del Norte Airshed Environment." International Journal of Environmental Research and Public Health 5, no. 1 (March 30, 2008): 12–25. http://dx.doi.org/10.3390/ijerph5010012.

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23

Li, Kang, Zhanwei Xu, Qianqian Liu, Zhi Li, Xiaoxian Wang, Jun Zhang, and Jianfeng Zhu. "Space-confined construction of nitrogen-rich cobalt porphyrin-derived nanoparticulates anchored on activated carbon for high-current lithium thionyl chloride battery." Electrochimica Acta 353 (September 2020): 136543. http://dx.doi.org/10.1016/j.electacta.2020.136543.

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24

Farahani, Mohammad Hossein Davood Abadi, and Vahid Vatanpour. "A comprehensive study on the performance and antifouling enhancement of the PVDF mixed matrix membranes by embedding different nanoparticulates: Clay, functionalized carbon nanotube, SiO2 and TiO2." Separation and Purification Technology 197 (May 2018): 372–81. http://dx.doi.org/10.1016/j.seppur.2018.01.031.

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25

Amorim, Alan A. P. O., Marcia G. Oliveira, Mauricio C. Mancini, and Alex S. Sirqueira. "Rheological, EMI and corrosion properties of epoxy coating with nanoparticle and conductive carbon black." SN Applied Sciences 3, no. 2 (January 28, 2021). http://dx.doi.org/10.1007/s42452-021-04247-7.

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AbstractThe purpose of this paper was determining the effects of two nanoparticles additions in a commercial epoxy coating system on rheology characterization. Two kinds of hybrid organic–inorganic silicates (benzytallowdimethylammonium salts with bentonite) were studied, APA, with C14-16 organic chain and, HT, with C2-4 organic chain. A 22 factorial design, with two categorical nanoparticules factors was applied. The experimental data of viscosity were fit to three different rheological constitutive models: Herschell-Bulkley, Carreau-Yasuda and Cross. The best fit was obtained by Herschel-Bulkley model. The APA nanoparticle had substantial changes in yield stress values, but no effect was observed when HT had been isolated. Two thixotropic models were analyzed for the epoxy system, and the better performance was observed for the model with two rheological parameters. The presence of nanoparticule in epoxy coating reduced around 40% the recovery time. The addition of nanoparticules changes the rheological properties of a commercial coating. The X-Rays Diffraction analyses were done to observe the dispersions degree and exfoliations in the epoxy system. The crystalline peak of nanoparticles had lost for all coating formulations. The electromagnetic interference shielding attenuation was 60% in the formulations with high content of both nanoparticles. The APA and HT improved hence, the anticorrosion performance of the epoxy coating for 720 h in chloride solution. Corrosion resistance had the best performance in the coating with high concentration of carbon black and nanoparticles.

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