scholarly journals Synthesis of Carbon Nanotubes in Thermal Plasma Reactor at Atmospheric Pressure

Nanomaterials ◽  
2017 ◽  
Vol 7 (2) ◽  
pp. 45 ◽  
Author(s):  
Lukasz Szymanski ◽  
Zbigniew Kolacinski ◽  
Slawomir Wiak ◽  
Grzegorz Raniszewski ◽  
Lukasz Pietrzak
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Plasma ◽  
Atmospheric Pressure ◽  
Plasma Reactor ◽  
Synthesis Of Carbon Nanotubes

The effects of atmospheric pressure plasma on the synthesis of carbon nanotubes

2009 ◽  
Vol 86 (4-6) ◽  
pp. 925-928 ◽  
Author(s):  
Seok Seung Shin ◽  
Bum Ho Choi ◽  
Young Mi Kim ◽  
Jong Ho Lee ◽  
Dong Chan Shin
Keyword(s):  
Carbon Nanotubes ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Pressure Plasma ◽  
Synthesis Of Carbon Nanotubes

One-step Synthesis of Carbon Nanotubes Network with Rich Oxygenated Functional Groups via Microwave Plasma in Atmospheric Pressure

MRS Advances ◽  
2020 ◽  
Vol 5 (52-53) ◽  
pp. 2679-2684
Author(s):  
Dashuai Li ◽  
Ling Tong ◽  
Bo Gao
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Functional Groups ◽  
Photoelectron Spectroscopy ◽  
Atmospheric Pressure ◽  
Microwave Plasma ◽  
Ethanol Vapor ◽  
Transmission Electron ◽  
Synthesis Of Carbon Nanotubes ◽  
Oxygenated Functional Groups

AbstractAn atmospheric pressure microwave plasma tubular furnace apparatus (MPTF) for the rapid synthesis of carbon nanotubes (CNTs) has been developed. CNTs have been synthesized by an Argon-Hydrogen microwave plasma using ethanol vapor as carbon source with the furnace temperature of 800 °C at the atmospheric pressure. The synthesized CNTs have been analyzed by scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), and are shown to be multi-walled and tangled and chemically connected to form a high-density network with the diameter at the range of 25-70 nm. The measurement of X-ray photoelectron spectroscopy (XPS) indicates that a large number of oxygenated functional groups grown on the surface of CNTs. These properties proved that the CNTs could be utilized as nanoscale templates for various applications.

Synthesis of nanocrystalline Y2O3 in a specially designed atmospheric pressure radio frequency thermal plasma reactor

2015 ◽  
Vol 17 (10) ◽  
Author(s):  
G. D. Dhamale ◽  
V. L. Mathe ◽  
S. V. Bhoraskar ◽  
S. N. Sahasrabudhe ◽  
S. Ghorui
Keyword(s):  
Radio Frequency ◽  
Thermal Plasma ◽  
Atmospheric Pressure ◽  
Plasma Reactor

Green Functionalization and Supercapacitive Properties of Carbon Nanotubes by Atmospheric Pressure Non-Thermal Plasma Treatment

2017 ◽  
Vol 20 (3) ◽  
pp. 095-100
Author(s):  
Zhihong Luo ◽  
Min Zhu ◽  
Yuzhen Zhao ◽  
Kun Luo
Keyword(s):  
Carbon Nanotubes ◽  
Plasma Treatment ◽  
Thermal Plasma ◽  
Atmospheric Pressure ◽  
Nitrogen Sources ◽  
Supercapacitive Performance ◽  
Pristine Cnts ◽  
Non Thermal Plasma ◽  
Functionalization Of Carbon Nanotubes ◽  
Pyridinic Nitrogen

Functionalization of carbon nanotubes proceeds by using atmospheric pressure non-thermal plasma treatment, where NH3 is used as nitrogen sources which is excited either by alternating currents (AC) or direct currents (DC). The content and species of the functional groups are analyzed by XPS which displays that heteroatom content increases 1.6 at.%, the main nitrogen groups are pyridinic nitrogen (N-6) and amino (-NH2), and HO-C=O, C=O and C-OH surface groups are also incorporated. The supercapacitive performance of the pristine CNTs, CNT-DC and CNT-AC electrodes are measured and the specific capacitance of CNTs is increased after plasma treatment, which indicate that the surface functionalization facilitate the improvement on supercapacitive properties.

Synthesis of carbon nanotubes by plasma-enhanced chemical vapor deposition in an atmospheric-pressure microwave torch

2010 ◽  
Vol 82 (6) ◽  
pp. 1259-1272 ◽  
Author(s):  
Lenka Zajíčková ◽  
Ondrej Jašek ◽  
Marek Eliáš ◽  
Petr Synek ◽  
Lukáš Lazar ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Atmospheric Pressure ◽  
Chemical Vapor ◽  
Multiwalled Nanotubes ◽  
Si Substrates ◽  
Field Emission Displays ◽  
Synthesis Of Carbon Nanotubes ◽  
Plasma Technologies

There are many different techniques for the synthesis of carbon nanotubes (CNTs), and plasma technologies experience a significant competitor in thermal chemical vapor deposition (CVD) processes. A particular process is, therefore, selected according to the specific requirements of an application, which clearly differ for the development of composites as compared to nanoelectronics, field emission, displays, sensors, and the like. This paper discusses the method for the synthesis of CNTs using an atmospheric-pressure microwave (MW) torch. It was successfully applied in the fast deposition of multiwalled nanotubes (MWNTs) on a substrate without the necessity of any vacuum or heating equipment. Dense straight-standing nanotubes were prepared on Si substrates with and also without barrier SiOx layer. Therefore, it was possible to produce CNTs directly on conductive Si and to use them as an electron-emitting electrode of the gas pressure sensor. The CNTs grown in MW torch were also used to create a gas sensor based on the changes of electrical resistance measured between two planar electrodes connected by the CNTs.

scholarly journals Simple Microwave-Assisted Synthesis of Carbon Nanotubes Using Polyethylene as Carbon Precursor

2017 ◽  
Vol 2017 ◽  
pp. 1-4 ◽  
Author(s):  
N. Kure ◽  
M. N. Hamidon ◽  
S. Azhari ◽  
N. S. Mamat ◽  
H. M. Yusoff ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Microscope ◽  
Atmospheric Pressure ◽  
Catalytic Decomposition ◽  
Reaction Chamber ◽  
Microwave Assisted Synthesis ◽  
X Ray ◽  
Microwave Assisted ◽  
Transmission Electron ◽  
Synthesis Of Carbon Nanotubes

In this work, a quick and effective method to synthesize carbon nanotubes (CNTs) is reported; a commercial microwave oven of 600 W at 2.45 GHz was utilized to synthesize CNTs from plasma catalytic decomposition of polyethylene. Polyethylene and silicon substrate coated with iron (III) nitrate were placed in the reaction chamber to form the synthesis stock. The CNTs were synthesized at 750°C under atmospheric pressure of 0.81 mbar. Raman spectroscopy and field emission scanning electron microscope revealed the quality and entangled bundles of mixed CNTs from which the diameters of the CNTs were calculated to be between 1.03 and 25.00 nm. High resolution transmission electron microscope further showed that the CNTs obtained by this method are graphitized. Energy dispersive X-ray analysis and thermogravimetric analysis revealed above 98% carbon purity.

Synthesis of carbon nanotubes and nano-necklaces by thermal plasma process

Carbon ◽  
2004 ◽  
Vol 42 (12-13) ◽  
pp. 2543-2549 ◽  
Author(s):  
Hanako Okuno ◽  
Eusebiu Grivei ◽  
Frédéric Fabry ◽  
Thomas M. Gruenberger ◽  
José Gonzalez-Aguilar ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Plasma ◽  
Plasma Process ◽  
Thermal Plasma Process ◽  
Synthesis Of Carbon Nanotubes
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