Spatial distributions of O, N, NO, OH and vacuum ultraviolet light along gas flow direction in an AC-excited atmospheric pressure Ar plasma jet generated in open air

In this manuscript has investigated the synthesis of plasma-polymerized pyrrole (C4H5N) nano-particles prepared by the proposed atmospheric pressure nonequilibrium plasma jet through the parametric studies, particularly gas flow rate (0.5, 1 and 1.5 L/min). The plasma jet which used operates with alternating voltage 7.5kv and frequency 28kHz. The plasma-flow characteristics were investigated based on optical emission spectroscopy (OES). UV-Vis spectroscopy was used to characterize the oxidization state for polypyrrole. The major absorption appears around 464.1, 449.7 and 435.3 nm at the three flow rate of argon gas. The chemical composition and structural properties of the contained samples which synthesized at 0.5 L/min as a argon flow rate were analyzed by scanning electron microscopy (SEM), Fourier transformation infrared spectroscopy (FTIR), Raman spectroscopy and X-ray diﬀraction (XRD). SEM point to a uniform distribution of polypyrrole (PPY) nanoparticles matrix. XRD technique showed a semicrystalline pattern for PPY)thin film. It is expected, that the high-quality plasma polymer grown by atmospheric pressure plasma jet method contributes to serving as conducting materials.

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A simple cold Ar plasma jet generated with a floating electrode at atmospheric pressure

Applied Physics Letters ◽

10.1063/1.2956411 ◽

2008 ◽

Vol 93 (1) ◽

pp. 011503 ◽

Cited By ~ 85

Author(s):

Qiu-Yue Nie ◽

Chun-Sheng Ren ◽

De-Zhen Wang ◽

Jia-Liang Zhang

Keyword(s):

Atmospheric Pressure ◽

Plasma Jet ◽

Ar Plasma ◽

Floating Electrode

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Effects of sheath gas flow on He atmospheric pressure plasma jet

Applied Physics Express ◽

10.7567/1882-0786/aafde9 ◽

2019 ◽

Vol 12 (3) ◽

pp. 036001 ◽

Cited By ~ 3

Author(s):

Kotaro Ogawa ◽

Hideki Yajima ◽

Jun-Seok Oh ◽

Hiroshi Furuta ◽

Akimitsu Hatta

Keyword(s):

Atmospheric Pressure ◽

Gas Flow ◽

Atmospheric Pressure Plasma ◽

Plasma Jet ◽

Atmospheric Pressure Plasma Jet ◽

Pressure Plasma

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Formation of spherical Sn particles by reducing SnO2 film in floating wire-assisted H2/Ar plasma at atmospheric pressure

Scientific Reports ◽

10.1038/s41598-020-74663-z ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

Thi-Thuy-Nga Nguyen ◽

Minoru Sasaki ◽

Takayoshi Tsutsumi ◽

Kenji Ishikawa ◽

Masaru Hori

Keyword(s):

Electron Density ◽

Glass Substrate ◽

Atmospheric Pressure ◽

Vacuum Ultraviolet ◽

Reduction Process ◽

High Electron ◽

Gas Temperature ◽

Plasma Properties ◽

Total Reduction ◽

Ar Plasma

Abstract A green method to synthesize spherical Sn particles by reducing SnO2 film in atmospheric-pressure H2/Ar plasma at low temperatures for various applications is presented. The floating wire-assisted remotely-generated plasma with a mixture of 0.05% H2/Ar gas formed spherical metallic Sn particles by reducing a SnO2 layer on glass substrate. During the reduction process, H radical density was measured by using vacuum ultraviolet absorption spectroscopy, and plasma properties including electron density and gas temperature were diagnosed by optical emission spectroscopy. The inductively coupled generated plasma with a high electron density of 1014 cm−3, a hydrogen atom density of 1014 cm−3, and a gas temperature of 940 K was obtained at a remote region distance of 150 mm where the SnO2/glass substrate was placed for plasma treatment. The process has been modeled on the spherical Sn formation based on the reduction of SnO2 films using H radicals. Depending on the treatment condition, the total reduction area, where spherical Sn particles formed, was enlarged and could reach 300 mm2 after 2 min. The substrate temperature affected the expansion rate of the total reduction area and the growth of the Sn spheres.

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High-Density Polyethylene (HDPE) Surface Treatment Using an RF Capacitive Atmospheric Pressure Cold Ar Plasma Jet

Plasma Science and Technology ◽

10.1088/1009-0630/15/6/16 ◽

2013 ◽

Vol 15 (6) ◽

pp. 577-581 ◽

Cited By ~ 2

Author(s):

Xiaomeng Fei ◽

Shin-ichi Kuroda ◽

Tamio Mori ◽

Katsuhiko Hosoi

Keyword(s):

Surface Treatment ◽

Atmospheric Pressure ◽

High Density Polyethylene ◽

Plasma Jet ◽

High Density ◽

Ar Plasma

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Ar plasma jet generation and its application for water and surface sterilization

E3S Web of Conferences ◽

10.1051/e3sconf/20197802020 ◽

2019 ◽

Vol 78 ◽

pp. 02020

Author(s):

Fada Feng ◽

Xianjun He ◽

Yingying Liang ◽

Fengzhu Yang ◽

Fushan Wang ◽

...

Keyword(s):

Dielectric Barrier Discharge ◽

Gas Flow ◽

Barrier Discharge ◽

Infrared Image ◽

Atmospheric Pressure Plasma ◽

Plasma Jet ◽

Living Environment ◽

Dielectric Barrier ◽

Surface Sterilization ◽

Ar Plasma

Microorganisms are widely distributed in the living environment of human, animals and plants. Some of the microorganisms are harmful for their pathogenic effects. Non-thermal plasma technology, especially, the atmospheric pressure plasma jet, is considered to be one of the promising technologies for sterilization. This work proposes a double-dielectric barrier discharge reactor for Ar plasma jet generation. Charteristics of discharge and temperature thermogram of plasma jet are investigated by the means of U-P curve and infrared image, respectively. Performance of the plasma jet is evaluated by surface and water sterilization. The results show that, Ar plasma jet is generated stable with double-dielectric barrier discharge. The length of plasma jet increases as the applied voltage, frequency or gas flow increased, but the plasma jet generation can be restricted in high frequency or gas flow. For E. coli in the water and surface, high sterilization efficiency is observed for a short time treatment by Ar plasma jet.

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