Preparation of multiwalled carbon nanotubes by DC arc discharge under a nitrogen atmosphere

Shen, Chengmin; Scharff, P.; Siegmund, C.; Spieß, Lothar; Romanus, H.; Schawohl, J.; Risch, K.; Schneider, Dietrich; Klötzer, S.

doi:10.1016/s0008-6223(03)00083-6

Cited by 16 publications

(10 citation statements)

References 22 publications

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“…SWCNT/Ni hybrid bundles were synthesized by arc-discharge method under helium atmosphere ($700 mbar) [20,21]. In brief, the arc-discharge apparatus consists of a two-wall system.…”

Section: Synthesis Of Swcnt/ni Hybrid Bundlesmentioning

confidence: 99%

Defect induced photoluminescence and ferromagnetic properties of bio-compatible SWCNT/Ni hybrid bundles

Gupta

Kotnala

Narayanan

et al. 2011

Journal of Colloid and Interface Science

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“…SWCNT/Ni hybrid bundles were synthesized by arc-discharge method under helium atmosphere ($700 mbar) [20,21]. In brief, the arc-discharge apparatus consists of a two-wall system.…”

Section: Synthesis Of Swcnt/ni Hybrid Bundlesmentioning

confidence: 99%

Defect induced photoluminescence and ferromagnetic properties of bio-compatible SWCNT/Ni hybrid bundles

Gupta

Kotnala

Narayanan

et al. 2011

Journal of Colloid and Interface Science

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“…Under an atmosphere containing organic molecules, the yield of MWNTs is half of the weight of the carbon deposit [6]. When MWNTs were synthesized using a N 2 atmosphere, the yield is 60% of the cathode deposit [7]. Keywords: carbon nanotubes; arc-discharge; N 2 atmosphere; yield; defect density Formation of MWNTs using the same technique in open air leads to a yield of 53% of soot with higher defects [8].…”

Section: Introductionmentioning

confidence: 99%

High yield formation of carbon nanotubes using arc discharge assisted with a nitrogen jet

Berkmans

Haridoss

2011

Trans Indian Inst Met

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Carbon Nanotubes (CNTs) are of significant research interest due to their significant electrical, mechanical, electro-mechanical and thermal properties. This enables CNT to be used in advanced bio-medical, electronics and materials technological applications. CNTs can be synthesized by various methods such as Arc-discharge, Chemical Vapor Deposition (CVD), Laser ablation etc. Still challenge exists when it comes to the yield. In general CNTs are commercially synthesized by Arc-discharge and CVD techniques. In both the cases the defect intensity differs according to the atmosphere which prevails in the production chamber. In the case of CVD the defect intensity is mainly due to pentagons of carbon, which cause curved faces whereas in the case of arc discharge, broken bonds can result at the surfaces.In general, the production of CNTs requires the presence of a controlled atmosphere inside the reaction chamber. Recent research has shown that CNTs can also be produced in open atmosphere but with a significant reduction in the yield. In the present work, a jet of nitrogen gas is applied between the arcing interfaces. As a consequence there is a significant change in the yield and defect density. Characterization techniques such as XRD, FEG-SEM, TEM and Raman spectroscopy confirm the same.

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“…As a first step to experimentally synthesizing ambient environmental stable polynitrogen, the nitrogen-doped CNTs (CN x ) are synthesized initially. Among the methods for production of CN x tubes, including arc-discharge (Cui et al 2003), laser ablation (Nishide et al 2003) and various techniques based on chemical vapor deposition (CVD) (He et al 2005, Tao et al 2007, and Maldonado et al 2006, aerosol assisted CVD (AACVD) appears to be the most suitable synthesis method for industrial scale production of CN x tubes, in which stoichiometry control within the CN x can be realized.…”

Section: Introductionmentioning

confidence: 99%

Uniform- And High-Yield Carbon Nanotubes With Modulated Nitrogen Concentration for Promising Nanoscale Energetic Materials

Líu

Zhang

et al. 2010

Int J Energetic Materials Chem Prop

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It is well known that pure polynitrogen systems are metastable. Recently, a theoretical study showed that when polymeric nitrogen chain is encapsulated in a carbon nanotube, it will be stable at ambient pressure and room temperature, which makes carbon nanotubes new promising as nanoscale energetic materials. Here, we report a systematic study of multi-walled carbon nanotubes with different nitrogen-doping amounts produced by aerosol assisted chemical vapor deposition, in which growth temperature, hydrogen flow rate and aerosol amount have been varied. The morphological and compositional changes of N-doped carbon nanotubes were characterized by means of scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The detailed investigation of N-doped carbon nanotubes will provide a route to obtain evidence of the above theoretical prediction and will have potential applications in nanoscale energetic materials.

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Preparation of multiwalled carbon nanotubes by DC arc discharge under a nitrogen atmosphere

Cited by 16 publications

References 22 publications

Defect induced photoluminescence and ferromagnetic properties of bio-compatible SWCNT/Ni hybrid bundles

Defect induced photoluminescence and ferromagnetic properties of bio-compatible SWCNT/Ni hybrid bundles

High yield formation of carbon nanotubes using arc discharge assisted with a nitrogen jet

Uniform- And High-Yield Carbon Nanotubes With Modulated Nitrogen Concentration for Promising Nanoscale Energetic Materials

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