Desorption behavior of zinc atoms from zinc-sulfate solution irradiated with pulsed DC plasma

Takaba, Takafumi; Suzuki, Haruka; Toyoda, Hirotaka

doi:10.1088/0022-3727/49/29/295202

Cited by 2 publications

(2 citation statements)

References 30 publications

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“…Although the APPs are useful from the viewpoint of an easy-to-use environment without a vacuum system, they often suffer from air contamination. For example, a discharge between water and metal electrodes in the atmosphere [13][14][15][16] is one of water-vapor-related APPs. Another water-vapor-related plasma process is a rare-gas atmospheric pressure plasma jet (APPJ) in which water vapor is admixed.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric pressure water-vapor plasma in an air-shielded environment by water flow

Senba¹,

Suzuki²,

Toyoda³

2018

Jpn. J. Appl. Phys.

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Atmospheric pressure plasma sources in air-shielded environment by water flow were developed for a plasma process utilizing water-derived reactive species without air contamination in the atmosphere. An atmospheric pressure plasma jet with He gas was enclosed by a cylindrical water flow preventing air contamination to the plasma without using a gas flow shield, vessel or pump. Suppression of air contamination into the plasma was confirmed by optical emission spectroscopy. Furthermore, a microwave-excited water-vapor plasma source in a space shielded by a coneshaped water flow was developed using a coaxial waveguide with a ring-shaped slot to use a high-density hydroxyl radical without air contamination at atmospheric pressure. A water-vapor plasma without air was successfully realized by pulsed-microwave discharges. Production of a hydroxyl radical was confirmed from the optical emission from the plasma. As an application example of the water-vapor plasma in the airshield environment, atmospheric pressure photoresist removal treatment was demonstrated and the removal rate as high as 2.2 μm min −1 was obtained. © 2018 The Japan Society of Applied Physics 15 kVpp, frequency: 10 kHz, pulse width: 5 μs) are applied to another electrode through a ballast resistance of 20 kΩ. In this configuration, a plasma jet is produced inside the quartz tube and downflow area of the quartz tube. The plasma source is surrounded by coaxially-aligned three acrylic pipes

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Section: Introductionmentioning

confidence: 99%

Atmospheric pressure water-vapor plasma in an air-shielded environment by water flow

Senba¹,

Suzuki²,

Toyoda³

2018

Jpn. J. Appl. Phys.

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“…[6][7][8][9] Recently, plasma production technology under atmospheric pressure has been developed and plasma has been applied to not only solid surfaces but also liquid surfaces aiming at its applications to the processing of new materials or medical processes. 10,11) One of the features of plasma production under or on the surface of water is the production of large amounts of chemically reactive OH radicals. Owing to the high oxidationreduction potential (2.8 V) and very high oxidizing power of OH radicals, the plasma treatment of organic solutions can realize the oxidization of various organic materials that are persistent to ozone processing.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of liquid treatment efficiency by microwave plasma under flow-induced reduced pressure

Ito

Takahashi

Takitou

et al. 2017

Jpn. J. Appl. Phys.

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A new microwave plasma device system for in-line solution treatment is developed. In this system, the Venturi effect for pressure reduction is utilized for stable and effective plasma production. The decomposition of phenol solution is tested to verify the efficiency of an in-line plasma treatment system, and such a treatment system is confirmed to have a higher decomposition efficiency than our previously developed batch-type treatment system. Increases in phenol decomposition speed and decomposition energy efficiency with increasing solution flow rate are observed, which suggests the suppression of OH radical recombination and the utilization of OH radicals under flowing solution conditions.

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Desorption behavior of zinc atoms from zinc-sulfate solution irradiated with pulsed DC plasma

Cited by 2 publications

References 30 publications

Atmospheric pressure water-vapor plasma in an air-shielded environment by water flow

Atmospheric pressure water-vapor plasma in an air-shielded environment by water flow

Enhancement of liquid treatment efficiency by microwave plasma under flow-induced reduced pressure

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