Effect of Growth Temperature on Bamboo-shaped Carbon–Nitrogen (C–N) Nanotubes Synthesized Using Ferrocene Acetonitrile Precursor

Yadav, Ram Manohar; Dobal, P. S.; Shripathi, T.; Katiyar, R. S.; Srivastava, O. N.

doi:10.1007/s11671-008-9225-2

Cited by 68 publications

(67 citation statements)

References 53 publications

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“…The CNT structure is characterized by a highly regular arrangement of carbon atoms leading to a high crystallinity. The Raman spectrum showed that the I G /I D decreased from 5.70 to 1.71 when the MWCNTs were doped with N; this result is in accordance with that previously reported for N-doped CNTs [18][19][20][31][32][33]. The decrease in I G /I D indicates a decrease in the crystallinity of carbonaceous structures, which, in this case, was due to the defects created by the N atoms.…”

supporting

confidence: 90%

“…The short f-MWCNTs could be beneficial for gas transportation through the inner cavities of the tubes because of CNTs with an increased number of open ends and a more uniform dispersion due to their decreased length. Nitrogen doping has been proven to be an effective method to tailor the electrical properties as well as the chemical reactivity of CNTs [15][16][17][18][19][20]. However, the use of N-doped CNTs for obtaining shortened nanotubes has not been reported thus far.…”

mentioning

confidence: 99%

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Biocomposite membranes based on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and multiwall carbon nanotubes for gas separation

Huh¹,

Lee²,

Park³

et al. 2017

Carbon letters

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The development of gas separation membranes is currently an active research area because of the rapidly increasing interest in carbon dioxide capture and hydrogen recovery, which are two of the most important solutions for problems related to energy and the environment [1][2][3][4]. Polymer membranes show selectivity in the separation of gases due to differences in the permeability of individual gases through the polymer film [3,4]. Even though advantageous in terms of low cost, the segmental flexibility of polymers has limited the discriminating ability of polymer membranes. As the permeability increases, this typically leads to a more open structure, and the selectivity decreases. It has been shown that the trade-off between permeability and selectivity has an evident "upper-bound" [5]. The existence of this upper limit can explain the fact that the performances of polymeric membranes do not yet meet the requirements of current membrane technology. A new class of membranes based on polymer composites, namely, mixed matrix membranes (MMMs), has been proposed as an alternative approach to overcome the inherent drawbacks of polymeric membranes [6][7][8].MMMs are comprised of inorganic particles embedded in a polymer matrix and benefit from the unique properties of these inorganic fillers while exploiting the low cost of processing polymers. Carbon nanotubes (CNTs) have been explored in MMM applications due to their unique capability to enhance the mechanical strength of composites even for a small amount of filler content, their potentially good control of pore dimensions at the nanometer scale, and their cavities with frictionless inner surfaces [9][10][11][12][13][14]. Generally, as-synthesized CNTs are not open ended, and one of the problems of using CNTs for MMM applications is that they must be cut either during the purification processes or in an additional processing step to shorten them [6]. Effective use of CNTs in MMMs also depends on whether the CNTs can be uniformly dispersed in the polymer matrices. The poor dispersion of CNTs largely arises from the smooth and chemically inert surface of the CNTs which is incompatible with most solvents and polymers. One of the most effective methods to overcome the dispersion problem of CNTs is to chemically functionalize the surface of CNTs to improve the interfacial attraction between CNTs and a polymer. In this study, first, nitrogen-doped multiwall carbon nanotubes (MWCNTs) were synthesized with a chemical vapor deposition (CVD) process using flowing CH 4 and NH 3 gases to create defects on the CNT surfaces. The N-doped MWCNTs were subsequently cut to shorter nanotubes during the functionalization of the CNTs by acid treatment. The short f-MWCNTs could be beneficial for gas transportation through the inner cavities of the tubes because of CNTs with an increased number of open ends and a more uniform dispersion due to their decreased length. Nitrogen doping has been proven to be an effective method to tailor the electrical properties as well as the chemical reac...

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supporting

confidence: 90%

mentioning

confidence: 99%

Biocomposite membranes based on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and multiwall carbon nanotubes for gas separation

Huh¹,

Lee²,

Park³

et al. 2017

Carbon letters

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“…Raman spectroscopy has been widely used to examine crystallinity and reveal the defects in carbon structures by identifying even slight changes in orientation of CAC bonds [35]. Fig.…”

Section: Surface Analysis: Raman and Ftir Spectroscopymentioning

confidence: 99%

Laser assisted synthesis of carbon nanoparticles with controlled viscosities for printing applications

Bagga

McCann

Wang

2015

Journal of Colloid and Interface Science

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High-quality carbon nanoparticles with controlled viscosity and high aqueous stability were prepared by liquid-phase laser ablation of a graphite target in deionized water. The size distribution was found to vary from 5 nm to 50 nm with mean size of 18 nm, in the absence of any reducing chemical reagents. Efficient generation of short chain polyynes was recorded for high laser repetition rates. Homogeneous and stable nanoparticle suspensions with viscosities ranging from 0.89 to 12 mPa.s were obtained by suspending the nanoparticles in different solvent mixtures such as glycerol-water and isopropanol-water. Optical properties were investigated by absorption and photoluminescence spectroscopy. Raman spectroscopy confirmed graphitic-like structure of nanoparticles and the surface chemistry was revealed by Fouriertransform infrared spectroscopy demonstrating sufficient electrostatic stabilization to avoid particle coagulation or flocculation. This paper present an exciting alternative method to engineer carbon nanoparticles and their potential use as a ligand-free nano-ink for ink jet printing (jetting) applications.

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“…π * -резонанс молекулярного азоту продемонстрував чітку поляризаційну залежність, що свідчить про переважну орієнтацію молекуль N 2 вздовж вісі ВНР. У випадку синтези бамбукоподібних N-ВНР з використанням фероцен-ацетонітрилу встановлено, що атомова частка азоту у ВНР зменшується зі збільшенням температури [41]. Середня довжина жмутів ВНР складала 430 мкм.…”

Section: а бunclassified

Nitrogenated Carbon Nanotubes: Methods of Fabrication, Properties, and Prospect of Application

et al. 2010

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Узагальнено літературні й власні дані щодо структури, основних способів одержання, механічних та електричних властивостей азотовмісних вуг-лецевих нанорурок (N-ВНР), що уможливлюють їх використання у нано-технологіях. В залежності від конфіґурації N-ВНР досліджено їх термо-динамічну стабільність з використанням метод молекулярної динаміки і Монте-Карло. Розглянуто можливі впорядковані конфіґурації домішко-вих атомів заміщення (N) та кінетику їх упорядкування в графеновій ґра-тниці.A compilation of data on a structure, basic methods of fabrication, mechanical and electrical properties of nitrogen-containing carbon nanotubes (N-CNT), which make possible their use in a nanotechnology, is presented. Depending on the N-CNT configuration, their thermodynamic stability is studied using the molecular dynamics and Monte Carlo methods. Possible ordered configurations of substitutional dopant (N) atoms and kinetics of their ordering in a graphene-based lattice are considered.Обобщены литературные и собственные данные о структуре, основных способах получения, механических и электрических свойствах азотсо-держащих углеродных нанотрубок (N-УНТ), которые делают возможным их использование в нанотехнологиях. В зависимости от конфигурации N-УНТ исследована их термодинамическая стабильность с использованием Успехи физ. мет. / Usp. Fiz. Met. 2010, т. 11, сс. 369-411 Оттиски доступны непосредственно от издателя Фотокопирование разрешено только в соответствии с лицензией © 2010 ИМФ (Институт металлофизики им. Г. В. Курдюмова НАН Украины) Напечатано в Украине.

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Effect of Growth Temperature on Bamboo-shaped Carbon–Nitrogen (C–N) Nanotubes Synthesized Using Ferrocene Acetonitrile Precursor

Cited by 68 publications

References 53 publications

Biocomposite membranes based on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and multiwall carbon nanotubes for gas separation

Biocomposite membranes based on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and multiwall carbon nanotubes for gas separation

Laser assisted synthesis of carbon nanoparticles with controlled viscosities for printing applications

Nitrogenated Carbon Nanotubes: Methods of Fabrication, Properties, and Prospect of Application

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