Carbon nanotubes by the metallocene route

Sen, Rahul; Govindaraj, A.; Rao, C. N. R.

doi:10.1016/s0009-2614(97)00080-8

Cited by 307 publications

(192 citation statements)

References 13 publications

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“…Organometallic compounds that are used in the form of colloidal suspension include metallocenes, iron pentacarbonyl and iron (II phthalocyanine). [38][39][40][41][42][43][44] These precursors on heating directly get converted to gaseous form, catalyst nanoparticles are formed when the compound is decomposed by heat. Different Organometallic compounds require different temperature conditions for sublimation and nanotube growth so a double stage furnace is needed.…”

Section: Catalytic Pyrolysis Of Hydrocarbonmentioning

confidence: 99%

Comprehensive Update on Carbon Nanotubes and their Significances in the Field of Pharmaceutics

Singh

Rana

Durgapal

et al. 2016

ATROA

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Carbon Nanotubes are carbon allotropes with nano size range that have a lengthto-diameter ratio up to 132,000,000:1. These cylindrical molecules were a unique dominion that makes them favorable in pharmaceuticals and nanotechnology. However, structurally they showed like cylindrical graphene sheets of sp2 bonded carbon atoms. They exhibit unique mechanical properties like high toughness and high tensile strength. Moreover, various methods have been refined to produce nanotubes in required and controlled quantities. Carbon nanotubes were found much utilization in medical research and pharmacy like when incorporated with various drugs they can be utilized as a carrier for drug delivery. They can also be utilized for boosting up of bio imaging genomes, proteomics and tissue engineering. However, CNTs possessed antioxidant properties and also showed preservative effect. When incorporated with magnetic materials, radioisotope enzymes, they can also be utilized as biosensors for diagnostic purposes and also for the monitoring of hazardous radiations in nuclear plant/reactor.

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Section: Catalytic Pyrolysis Of Hydrocarbonmentioning

confidence: 99%

Comprehensive Update on Carbon Nanotubes and their Significances in the Field of Pharmaceutics

Singh

Rana

Durgapal

et al. 2016

ATROA

View full text Add to dashboard Cite

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“…Chemical vapor deposition is simple and law cost with less complicated as compare with the ether techniques [5]. Many hydrocarbon materials are use as sources of carbon to synthesized CNTs such Methane acetylene, benzene and ethanol [6][7][8][9]. Methanol mostly used with the mixture to synthesized CNTs Due to produce high ratios of unconverted carbon, but enhancement effect of the OH radical which evolves from dissociation encourage to use it [4,10].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of few-wall carbon nanotubes using methanol/ propanol mixture by chemical vapour deposition

Fh¹,

Am²,

Fh³

2017

Front Nanosci Nanotech

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Carbon nanotubes with few walls are highly appreciated for specific physiochemical properties and technological with huge applications. In this paper, we present an alternative process that can lead to lowering the manufacturing in time and cost. The process of synthesized were done by chemical vapor deposition with homemade portable tube furnace reactor. Methanol/ Propanol mixture is utilized as a source of carbon on silica surface caver with carbon black (CB) as support for growth CNTs at two temperature 450 and 750°C. The characterization of FWNTs was performed by X-Ray diffraction, Raman spectroscopy, transmission electron microscopy TEM, Brunauer, Emmett and Teller BET and Thermalanalysis TGA. The main interest of this study are to give the basis of an efficient simple synthesis process to produce CNTs of few walls for removing pollutant by adsorption. The method was succeeded to synthesize FWNT450 which more surface area and more active site than FWNT750 in adsorption properties.

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“…The CNTs have been synthesised by a variety of techniques. Some more prominent ones are arc discharge, laser vapourisation and chemical vapour deposition (CVD) [4][5][6][7]. Among them, *Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of carbon and carbon–nitrogen nanotubes using green precursor: jatropha-derived biodiesel

Kumar

Yadav

Awasthi³

et al. 2012

Journal of Experimental Nanoscience

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The jatropha-derived biodiesel, a green precursor was found to be a new and promising precursor for the synthesis of carbon nanotubes (CNTs) and carbonnitrogen (C-N) nanotubes. The CNTs and C-N nanotubes have been synthesised by spray pyrolysis of biodiesel with ferrocene and ferrocene-acetonitrile, respectively, at elevated temperature under an argon atmosphere. The typical length and diameter of as-grown CNTs are 20 mm and 20-50 nm, respectively. The C-N nanotubes are found in bundles with effective length of 30 mm and diameter ranging between 30 and 60 nm with bamboo-shaped morphology. The as-grown CNTs and C-N nanotubes were characterised through scanning and transmission electron microscopes, X-ray photoelectron, Raman and Fourier transform infrared spectroscopic techniques. These investigations revealed that the nanotubes synthesised by jatropha-derived biodiesel are clean from carbonaceous impurities and the bamboo compartment formations in C-N nanotubes are due to nitrogen incorporation. The nitrogen concentration in C-N nanotubes decreases with the increase in synthesis temperature.

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Carbon nanotubes by the metallocene route

Cited by 307 publications

References 13 publications

Comprehensive Update on Carbon Nanotubes and their Significances in the Field of Pharmaceutics

Comprehensive Update on Carbon Nanotubes and their Significances in the Field of Pharmaceutics

Synthesis of few-wall carbon nanotubes using methanol/ propanol mixture by chemical vapour deposition

Synthesis of carbon and carbon–nitrogen nanotubes using green precursor: jatropha-derived biodiesel

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