Development of an Atmospheric Pressure Plasma Jet Device Using Four-Bore Tubing and Its Applications of In-Liquid Material Decomposition and Solution Plasma Polymerization

Bae, Gyu Tae; Jang, Hyo Jun; Jung, Eun Young; Lee, Ye Rin; Park, Choon‐Sang; Kim, Jae Yong; Tae, Heung‐Sik

doi:10.3390/polym14224917

Cited by 4 publications

(5 citation statements)

References 39 publications

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“…We chose to study polyaniline formation via plasma irradiation of solution because polyaniline synthesis is well studied and is driven by oxidation, providing a chemical template to meaningfully determine plasma-driven mechanisms. Plasma has also been shown to drive polymerization reactions of other precursors, making the formation of polyaniline an exciting possibility for a plasma-based reaction in aqueous solution. − In this work, we show that plasma-driven production of oxidants in aqueous solution can drive the polymerization of aniline and propose a mechanism for oxidation.…”

mentioning

confidence: 73%

Evidence for Superoxide-Initiated Oxidation of Aniline in Water by Pulsed, Atmospheric Pressure Plasma

Clay,

Mueller,

Rich

et al. 2024

J. Phys. Chem. Lett.

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Plasma-driven solution electrochemistry (PDSE) uses plasma-generated reactive species to drive redox reactions in solution. Nonthermal, atmospheric pressure plasmas, when irradiating water, produce many redox species. While PDSE is a promising chemical tool, there is limited insight into the mechanisms of the reactions due to the variety of short-lived reagents produced. In this study, we use aniline as a model system for studying redox mechanisms of PDSE. We show that the plasma irradiation of aqueous aniline solutions drives the formation of polyaniline oligomer, which is suppressed under acidic starting conditions. The addition of (2,2,6,6-Tetramethylpiperidin-1-yl)oxyl (TEMPO), a radical scavenger, decreases the formation of oligomer by 80%, and the addition of superoxide dismutase fully hinders oligomerization. These results lead us to conclude that the oligomerization of aniline by plasma irradiation is initiated by superoxide. This discovery provides novel insights into PDSE mechanisms and illustrates a potential method of harnessing superoxide for chemical reactions.

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mentioning

confidence: 73%

Evidence for Superoxide-Initiated Oxidation of Aniline in Water by Pulsed, Atmospheric Pressure Plasma

Clay,

Mueller,

Rich

et al. 2024

J. Phys. Chem. Lett.

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“…When AP plasma is produced near water, some of the generated reactive species can dissolve in the water or interact with water molecules to generate a variety of aqueous reactive species. Among the generated aqueous reactive species is • OH, which is known to be the most reactive oxidizing agent in water treatment and can be used to decompose phosphorus compounds in water [ 10 , 18 ].…”

Section: Resultsmentioning

confidence: 99%

“…Recently, our research group has taken a keen interest in atmospheric-pressure (AP) plasma-assisted AOP. This method employs an air–liquid discharge to decompose phosphorus compounds to orthophosphate, holding promise for water-quality sensor applications [ 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Dielectric Barrier on Water Activation and Phosphorus Compound Digestion in Gas–Liquid Discharges

Lee,

Kim,

Kim

et al. 2023

Nanomaterials

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To generate a stable and effective air–liquid discharge in an open atmosphere, we investigated the effect of the dielectric barrier on the discharge between the pin electrode and liquid surface in an atmospheric-pressure plasma reactor. The atmospheric-pressure plasma reactor used in this study was based on a pin–plate discharge structure, and a metal wire was used as a pin-type power electrode. A plate-type ground electrode was placed above and below the vessel to compare the pin–liquid discharge and pin–liquid barrier discharge (PLBD). The results indicated that the PLBD configuration utilizing the bottom of the vessel as a dielectric barrier outperformed the pin–liquid setup in terms of the discharge stability and that the concentration of reactive species was different in the two plasma modes. PLBD can be used as a digestion technique for determining the phosphorus concentration in natural water sources. The method for decomposing phosphorus compounds by employing PLBD exhibited excellent decomposition performance, similar to the performance of thermochemical digestion—an established conventional method for phosphorus detection in water. The PLBD structure can replace the conventional chemical-agent-based digestion method for determining the total dissolved phosphorus concentration using the ascorbic acid reduction method.

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“…Figure b shows a current transformer to sense current in an electrical circuit . It is one of the most commonly used sensors of sensing current in plasma medicine, , which can also be measured using a shunt resistor, Rogowski coil, and Hall effect current monitoring system Figure c shows a potentiostat based electrochemical sensor, which was combined with mass spectrometry to monitor chemical changes in the plasma lipid bilayer during plasma treatment …”

Section: Adapting Current Sensors For Monitoring the Plasma–biologica...mentioning

confidence: 99%

Opportunities of Electronic and Optical Sensors in Autonomous Medical Plasma Technologies

et al. 2023

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Low temperature plasma technology is proving to be at the frontier of emerging medical technologies with real potential to overcome escalating healthcare challenges including antimicrobial and anticancer resistance. However, significant improvements in efficacy, safety, and reproducibility of plasma treatments need to be addressed to realize the full clinical potential of the technology. To improve plasma treatments recent research has focused on integrating automated feedback control systems into medical plasma technologies to maintain optimal performance and safety. However, more advanced diagnostic systems are still needed to provide data into feedback control systems with sufficient levels of sensitivity, accuracy, and reproducibility. These diagnostic systems need to be compatible with the biological target and to also not perturb the plasma treatment. This paper reviews the state-of-the-art electronic and optical sensors that might be suitable to address this unmet technological need, and the steps needed to integrate these sensors into autonomous plasma systems. Realizing this technological gap could facilitate the development of next-generation medical plasma technologies with strong potential to yield superior healthcare outcomes.

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Development of an Atmospheric Pressure Plasma Jet Device Using Four-Bore Tubing and Its Applications of In-Liquid Material Decomposition and Solution Plasma Polymerization

Cited by 4 publications

References 39 publications

Evidence for Superoxide-Initiated Oxidation of Aniline in Water by Pulsed, Atmospheric Pressure Plasma

Evidence for Superoxide-Initiated Oxidation of Aniline in Water by Pulsed, Atmospheric Pressure Plasma

Effects of Dielectric Barrier on Water Activation and Phosphorus Compound Digestion in Gas–Liquid Discharges

Opportunities of Electronic and Optical Sensors in Autonomous Medical Plasma Technologies

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