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Process for producing carbon nanotubes by arc …

The carbon nanotubes are synthesized by arc discharge, wherein an inert gas or inert gas-containing mixed gas is jetted onto a cathode having a carbon material from the inside of a hollow electrode (11) used as an anode, and simultaneously an arc is generated to form a path of arc discharge …

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Dispersion of arc-discharged single-walled carbon ...

The original single-walled carbon nanotubes were prepared by an improved arc discharge procedure. 41 The anode is Ø6 × 120 mm graphite rod with a drilled Ø4 × 100 mm hole (Ø stands for the diameter of the rod or the hole), which was filled with a powdered mixture of graphite, YNi 2 alloy and FeS. The cathode is a circular graphite block ...

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Dispersion and characterization of arc discharge single ...

This study addresses a combination of a well-developed and mild dispersion method and high-quality arc discharge single-walled carbon nanotubes (SWCNTs) as starting materials. Thus, we advance in fabrication of transparent, conducting films with extraordinary low material loss during SWCNT processing. The st

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GROWTH OF CARBON NANOTUBES (CNTs) IN …

2020-11-29 · Electric-arc discharge deposition (EADD) is used to produce CNT products. The design and electric scheme are discussed in details, as well as all technological features. The results of the outputs of all technological schemes are discussed on the basis of thermal analysis (TGA and DTA), supported by TEM and fullerene-dissolving tests.

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GROWTH OF CARBON NANOTUBES (CNTs) IN …

2020-11-29 · Electric-arc discharge deposition (EADD) is used to produce CNT products. The design and electric scheme are discussed in details, as well as all technological features. The results of the outputs of all technological schemes are discussed on the basis of thermal analysis (TGA and DTA), supported by TEM and fullerene-dissolving tests.

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Rigaku VPD Applications: Arc Discharge for Nanotubes

Arc discharge. Nanotubes were first observed in 1991 in the carbon soot of graphite electrodes during an arc discharge experiment that was intended to produce fullerenes. However the first large scale production of carbon nanotubes was made in 1992 by two researchers at NEC's Fundamental Research Laboratory. The method used was the same as in 1991.

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Arc-Discharge Synthesis of Carbon Nanotubes in …

We are producing nanotubes by arc-discharge with a set-up that simulates microgravity. We are experimenting with different geometries and the manipulation of gas flow to improve the quality and quantity of single wall carbon nanotube (SWCNT) growth. We have found that a vertical geometry (cathode above anode) yields a higher quality and a larger output of SWCNTs than the traditional …

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Rigaku VPD Applications: Arc Discharge for Nanotubes

Arc discharge. Nanotubes were first observed in 1991 in the carbon soot of graphite electrodes during an arc discharge experiment that was intended to produce fullerenes. However the first large scale production of carbon nanotubes was made in 1992 by two researchers at NEC's Fundamental Research Laboratory. The method used was the same as in 1991.

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(PDF) Optimisation of the arc-discharge production of ...

Carbon 40 (2002) 923–928 Optimisation of the arc-discharge production of multi-walled carbon nanotubes M. Cadek a , *, R. Murphy a , B. McCarthy a , A. Drury a , B. Lahr a , R.C. Barklie a , M. in het Panhuis a,b , J.N. Coleman a , W.J. Blau a a Materials Ireland Polymer Research Centre, Department of Physics, Trinity College Dublin, Dublin 2, Ireland b Media Lab Europe, Sugar House Lane ...

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Arc discharge for carbon nanotube synthesis - …

The arc discharge is one of the most practical methods for single wall nanotube (SWNT) synthesis. This method yields highly graphitized tubes, because the manufacturing process occurs at a very high temperature. Arc-produced carbon nanotubes have fewer structural defects than those produced by low temperature techniques such chemical vapor deposition (CVD).

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Arc Discharge - Nanoscience & Nanotechnology

2020-12-3 · Arc discharge was the first recognized technique for producing MWNTs [1] and SWNTs [2,3]. The arc discharge technique generally involves the use of two high-purity graphite electrodes as the anode and the cathode. The electrodes were vaporized by the passage of a DC current (~100 A) through the two high-purity graphite separated (~ 1–2 mm) in ...

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Arc Discharge - Nanoscience & Nanotechnology

2020-12-3 · Arc discharge was the first recognized technique for producing MWNTs [1] and SWNTs [2,3]. The arc discharge technique generally involves the use of two high-purity graphite electrodes as the anode and the cathode. The electrodes were vaporized by the passage of a DC current (~100 A) through the two high-purity graphite separated (~ 1–2 mm) in ...

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High‐yield synthesis of single‐walled carbon …

This contribution deals with the synthesis of Single‐Walled Carbon Canotubes (SWCNT) with a novel pulsed arc‐discharge technique. Pulsed arc‐discharge is a very interesting technique because it is similar to the well‐known laser evaporation technique for the synthesis of SWCNT and should allow a scale‐up to reach a SWCNT volume production.

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Multiwalled Carbon Nanotube Synthesis Using Arc …

Synthesis of multiwalled carbon nanotube (MWCNT) by arc discharge process is investigated with methane (CH 4 ) as background and feedstock gas. The arc discharge is carried out between two graphite electrodes for ambient pressures 100, 300, and 500 torr and arc currents 50, 70, and 90 A. Plasma kinetics such as the density and temperature for arc discharge carbon plasma is determined …

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Carbon Nanotubes Formation in the Arc Discharge …

The different aspects of the arc discharge production of carbon nanotubes are reviewed. Most of the attention is focussed on the production of single walled nanotubes. The purification techniques...

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Influence of Plasma Jet Temperature Profiles in Arc ...

2017-2-23 · An assay of carbon nanotubes produced in arc discharge systems available on the market shows that commercial cathode deposits contain about 10% CNTs. Given that the quality of the final product depends on carbon-plasma jet parameters, it is possible to increase the yield of the synthesis by plasma jet control.