Improved arc discharge setup for synthesis of single and multi walled carbon nanotubes

Research widely broadened the suitable condition to produce long linear carbon chain inside multi-walled carbon nanotubes and discussed the mechanism.

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Bulk synthesis of multi-walled carbon nanotubes by AC arc discharge method

Proceedings of the Institution of Mechanical Engineers Part N Journal of Nanomaterials Nanoengineering and Nanosystems ◽

10.1177/2397791417712836 ◽

2017 ◽

Vol 231 (3) ◽

pp. 141-151 ◽

Cited By ~ 1

Author(s):

KK Singh ◽

SK Chaudhary ◽

R Venugopal ◽

A Gaurav

Keyword(s):

Electron Microscopy ◽

Carbon Nanotubes ◽

Scanning Electron Microscopy ◽

Arc Discharge ◽

Pure Graphite ◽

Multi Walled Carbon Nanotubes ◽

Different Shapes ◽

Ac Arc ◽

Walled Carbon Nanotubes ◽

Scanning Electron

This work proposes the production of multi-walled carbon nanotubes by AC arc discharging of spectroscopically pure graphite electrodes of different shapes, that is, movable cylindrical and stationary rectangular electrode by manual metal arc welding setup. Continuous arc was generated by maintaining the gap of about 3 mm between the electrodes which in turn formed the plasma zone. Vaporization of carbon cations followed by sudden quenching paved the way for formation of carbon nantotubes. Nanotubes produced were deposited on the stationary graphite electrode in the form of soot. Further extraction of the nanoparticles from the soot was performed by conducting series of purification processes which will be discussed in upcoming chapters. Morphology and purity of the extracted nanotubes were investigated by X-ray diffraction, scanning electron microscopy, field-emission scanning electron microscopy, transmission electron microscopy and Raman spectroscopy. Following the characterization process, it was observed that the so-produced nanotubes were of different shapes, that is, carbon cone nanotubes, nanocapsules, nanoparticles and branching type and randomly oriented. The length of the nanotubes varied from 231 to 561 nm, whereas diameter was found to be in the range of 14–55 nm.

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Preliminary results on the preparation of carbon nanotubes using arc discharge in water medium

Bulletin of Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences ◽

10.5564/bicct.v0i8.1474 ◽

2020 ◽

pp. 26-30

Author(s):

Ulambayar R ◽

Dawaabal B ◽

Oyun-Erdene G ◽

J Temuujin

Keyword(s):

Carbon Nanotubes ◽

Large Scale ◽

Arc Discharge ◽

Low Cost ◽

Water Medium ◽

X Ray Diffraction ◽

Plastic Container ◽

Graphite Electrodes ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

Depending on the application, carbon nanotubes are being intensively studied in physics, chemistry, medicine, and computers. Therefore, it is important to develop large-scale high-quality multi-walled carbon nanotubes production at low cost. Wehere conducted a study on the easy preparation of low-cost carbon nanotubes. Two graphite electrodes were placed vertically in a thick, clear plastic container with distilled water to produce a carbon nanotube with an alternating current arc. The device has a simple design and the water acts as an insulating medium and cools the system. X-ray diffraction (XRD) and infrared spectrum (FTIR) analysis of the obtained carbon soot was performed in comparison with technical multi-walled carbon nanotubes. These tests confirmed that the multi-walled carbon nanotubes were formed during the experiment. Нуман цахилалтын аргаар усан орчинд нүүрстөрөгчийн нано хоолой гарган авах урьдчилсан судалгаа Хураангуй: Нүүрстөрөгчийн нано хоолойг хэрэглээнээс хамаарч физик, хими, анагаах ухаан, компьютер гэх зэрэг салбаруудад эрчимтэй судлаж байна. Иймээс ч өндөр чанартай олон ханатай нүүрстөрөгчийн нано хоолойг бага зардлаар их хэмжээтэй, гарган авах арга техникийг хөгжүүлэх нь нэн чухал юм. Бид бага зардлаар нүүрстөрөгчийн нано хоолойг хялбараар гарган авах судалгааг явууллаа. Нэрмэл ус бүхий зузаан тунгалаг хуванцар саванд бал чулуун хоёр электродыг босоо хэлбэртэй байрлуулан хооронд нь хувьсах гүйдлийн нуман цахилалт цахилуулан нүүрстөрөгчийн нано хоолойг гарган авсан. Энэхүү төхөөрөмж нь энгийн хялбар хийцтэй бөгөөд ус нь тусгаарлагч орчин болж, системийг хөргөдөг. Гарган авсан нүүрстөрөгчийн хөөнд рентген дифракцийн (XRD) болон нил улаан туяаны спектрийн (FTIR) шинжилгээг техникийн олон ханатай нүүрстөрөгчийн нано хоолойтой харьцуулан хийж гүйцэтгэсэн. Эдгээр шинжилгээгээр олон ханатай нүүрстөрөгчийн нано хоолой туршилтын явцад үүссэн болохыг баталлаа. Түлхүүр үг: Нуман цахилалт, нүүрстөрөгчийн нано хоолой, графен, графит (бал чулуу)

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