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Title: Stable synthesis of few-layered boron nitride nanotubes by anodic arc discharge

Journal Article · · Scientific Reports
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3];  [4]
  1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Princeton Univ., NJ (United States). Princeton Inst. for Science and Technology of Materials
  2. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  3. Princeton Univ., NJ (United States). Dept. of Chemical and Biological Engineering
  4. Princeton Univ., NJ (United States). Princeton Inst. for Science and Technology of Materials

Boron nitride nanotubes (BNNTs) were successfully synthesized by a dc arc discharge using a boron-rich anode as synthesis feedstock in a nitrogen gas environment at near atmospheric pressure. The synthesis was achieved independent of the cathode material suggesting that under such conditions the arc operates in so-called anodic mode with the anode material being consumed by evaporation due to the arc heating. In order to sustain the arc current by thermionic electron emission, the cathode has to be at sufficiently high temperature, which for a typical arc current density of similar to 100 A/cm2, is above the boron melting point (2350 K). With both electrodes made from the same boron-rich alloy, we found that the arc operation unstable due to frequent sticking between two molten electrodes and formation of molten droplets. We achieved a stable and reliable arc operation and arc synthesis with the boronrich anode and the cathode made from a refractory metal which has a melting temperature above the melting point of boron. Ex-situ characterization of synthesized BNNTs with electron microscopy and Raman spectroscopy revealed that independent of the cathode material, the tubes are primarily single and double walled. Our results also show evidence of root-growth of BNNTs produced in the arc discharge.

Research Organization:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI ID:
1364993
Journal Information:
Scientific Reports, Vol. 7, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 49 works
Citation information provided by
Web of Science

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Cited By (12)

Investigation of the short argon arc with hot anode. I. Numerical simulations of non-equilibrium effects in the near-electrode regions journal January 2018
Investigation of the short argon arc with hot anode. II. Analytical model journal January 2018
Hydrothermal Synthesis of Boron Nitride Quantum Dots/Poly(Luminol) Nanocomposite for Selective Detection of Ascorbic Acid journal January 2019
Investigation of the Short Argon Arc with Hot Anode, Part II: Analytical Model text January 2017
Investigation of a short argon arc with hot anode. Part I: numerical simulations of non-equilibrium effects in the near-electrode regions text January 2017
Determining the gas composition for the growth of BNNTs using a thermodynamic approach journal January 2019
Few-layer flakes of Molybdenum Disulphide produced by anodic arc discharge in pulsed mode journal December 2019
Few-layer flakes of Molybdenum Disulphide produced by anodic arc discharge in pulsed mode preprint January 2020
Reverse battery model for anodic arc discharges near atmospheric pressure journal September 2019
Pulsed anodic arc discharge for the synthesis of carbon nanomaterials journal April 2019
Boron nitride nanotubes: synthesis and applications journal June 2018
Dual growth mode of boron nitride nanotubes in high temperature pressure laser ablation journal October 2019