A parametric study on the synthesis of carbon nanotubes through arc-discharge in water

Bera, Debasis; Johnston, Greg; Heinrich, Helge; Seal, Sudipta

doi:10.1088/0957-4484/17/6/030

Cited by 30 publications

(17 citation statements)

References 24 publications

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“…This is an acceptable yield for fabrication of CNTs comparison with the results of reported studies [17,18]. Figure 5 illustrates SEM image of another sample which has the same condition of the three previous experiments while Mo was used as catalysts.…”

Section: Purificationsupporting

confidence: 70%

“…The fabricated CNTs after purification were weighted as 0.537 mg for an experiment period of 1 min. The yeiled of CNTs was relatively good in comparison with the results of other's studies [17,18]. Figure 3 shows SEM image of the second sample.…”

Section: Purificationsupporting

confidence: 63%

“…The weight of fabricated carbon nanotubes was 0.121 mg for an experiment period of 1 min which was not as good as the results were reported in the other's studies [17,18]. To study the morphology of the products a scanning electron microscopy was applied.…”

Section: Purificationmentioning

confidence: 84%

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Catalysts effects on the production of carbon nanotubes by an automatic arc discharge set up in solution

Jahanshahi

Seresht

Hajizadeh

2009

Phys. Status Solidi (c)

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Carbon nanotubes (CNTs) represent an important group of nanomaterials with attractive geometrical, electrical and chemical properties and are synthesized using a variety of techniques. CNTs have been extensively studied in our previous works and in this study were fabricated by arc discharge full automatic set up in liquid which does not require vacuum equipment, heat exchange system, active or inert gases. This technique was full automatic which enabled the controlling of gap between the two electrodes. The effect of the kind of catalyst on quantity of synthesized CNTs was studied herein. Carbon nanotubes were fabricated between two graphite electrodes which were submerged in the LiCl 0.25N as a solution and with a voltage of 25v. For comparative studies, Ni, Mo, Fe and Ni‐Mo were exploited as metallic or bimetallic catalysts and the results were subsequently analyzed, compared and discussed. In order to analyze the morphology of the synthesized products a scanning electron microscopy (SEM) as well as transmission electron microscopy (TEM) study were employed. Based on Mo‐Ni as catalysts in carbon electrode, high‐crystalline and alonged multi walled carbon nanotubes (MWCNTs), single walled carbon nanotubes (SWCNTs) and spring‐like carbon nanotubes (SCNTs) were synthesized by using this unique technique. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Section: Purificationsupporting

confidence: 70%

Section: Purificationsupporting

confidence: 63%

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Catalysts effects on the production of carbon nanotubes by an automatic arc discharge set up in solution

Jahanshahi

Seresht

Hajizadeh

2009

Phys. Status Solidi (c)

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“…As expected, the consumption rate of the anode and the production rate increase with the increased voltage. It can be seen from Table 1 that a high production rate of CNTs is achieved at a voltage of 30 V. This is a good result in comparison with the results of the other studies in this field [10,14]. Figure 5 illustrates the SEM images of CNTs before and after purification.…”

Section: Voltage Effect Upon Produced Nanocarbonssupporting

confidence: 66%

Voltage effects on the production of nanocarbons by a unique arc-discharge set-up in solution

Jahanshahi

Raoof

Seresht

2009

Journal of Experimental Nanoscience

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Well graphitised nanocarbons including onion-like fullerenes and single-and multi-walled carbon nanotubes (CNTs) were synthesised in high yield by automatic arc-discharge method in solution. This technique is considered a low-cost method since it does not require any expensive equipment. Herein, an arc discharge full automatic set-up was used for fabrication of CNTs which enables controlling of the gap between the two electrodes and the voltage as well. Carbon nanostructures under a controlled amount of voltage (from 10 to 30 V) were synthesised where Ni : Mo as a catalyst and LiCl 0.25 M as a solution were used. Subsequently, a modified acid treatment method was applied as purification stage of the products. The production rate of CNTs was as high as 7.7 mg min À1 while the voltage was set at 30 V. Scanning electron microscopy and transmission electron microscopy as well as Raman spectroscopy were employed to study the morphology of these carbon nanostructures. The results indicated that CNTs synthesised at a voltage of 30 V had the best quality and elongated straight structures. The mechanism of the voltage conditions for preparing nanocarbons as well as their characterisation are discussed.

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“…A similar growth direction of aluminum carbide was related by Zhang et al [19], but using lithium as a catalyst. The aluminum carbide and aluminum oxide were commonly found at the interface of CNT/Al nanocomposites [20][21][22][23][24][25].…”

Section: Sem Images Of Nanocomposites Indicated Cushionmentioning

confidence: 99%

One-Step Synthesis and Characterization of a Nanocomposite Based on Carbon Nanotubes/Aluminum and Its Reinforcement Effect on the Metal Matrix

Reis¹,

Rodrigues²,

Nero³

et al. 2015

JMSE-B

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Abstract:The nanocomposite based on carbon nanotubes/aluminum (CNT/Al) was one-step prepared by the DC arc discharge method under an argon/acetone mixed atmosphere. Synthesis was performed by arc plasma on a pure graphite rod, filled by aluminum powder as an anode and aluminum plate as a cathode. Discharge conditions of 85 A and 20 V were used at a pressure range of 375 to 750 Torr. The CNT/Al was characterized by Scanning Electron Microscopy with Energy Dispersive Spectroscopy; Transmission Electron Microscopy; Laser Diffraction Particle Size Analysis; X-Ray Diffraction; Raman Spectroscopy; Thermogravimetric Analysis; and, its reinforcement effect of the CNTs on the aluminum matrix was measured by Vickers microhardness test. This nanocomposite shows agglomerates of multiwalled carbon nanotubes filled with Al 4 C 3 and blended with aluminum particles; moreover, in the nanocomposites was found a hardness increase of 40% for nanocomposites with 1.0 wt.% of CNT/Al.

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A parametric study on the synthesis of carbon nanotubes through arc-discharge in water

Cited by 30 publications

References 24 publications

Catalysts effects on the production of carbon nanotubes by an automatic arc discharge set up in solution

Catalysts effects on the production of carbon nanotubes by an automatic arc discharge set up in solution

Voltage effects on the production of nanocarbons by a unique arc-discharge set-up in solution

One-Step Synthesis and Characterization of a Nanocomposite Based on Carbon Nanotubes/Aluminum and Its Reinforcement Effect on the Metal Matrix

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