Electrochemical Reactions at the Boundary Areas Between Cold Atmospheric Pressure Plasma, Air, and Water
A cold atmospheric-pressure He-plasma jet (CAPPJ) interacts with air and water, producing reactive oxygen and nitrogen species (RONS), including biologically active ions, radicals, and molecules such as NO<sub>x</sub>, H<sub>2</sub>O<sub>2</sub>, HNO<sub>3&l...
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2024-11-01
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| author | Jamiah Thomas Alexander G. Volkov |
| author_facet | Jamiah Thomas Alexander G. Volkov |
| author_sort | Jamiah Thomas |
| collection | DOAJ |
| description | A cold atmospheric-pressure He-plasma jet (CAPPJ) interacts with air and water, producing reactive oxygen and nitrogen species (RONS), including biologically active ions, radicals, and molecules such as NO<sub>x</sub>, H<sub>2</sub>O<sub>2</sub>, HNO<sub>3</sub>, HNO<sub>2</sub>, and O<sub>3</sub>. These compounds can activate interfacial redox processes in biological tissues. The CAPPJ can oxidize N<sub>2</sub> to HNO<sub>3</sub> and water to H<sub>2</sub>O<sub>2</sub> at the interface between plasma and water. It can also induce the oxidation of water-soluble redox compounds in various organisms and in vitro. This includes salicylic acid, hydroquinone, and mixtures of antioxidants such as L (+)-ascorbic acid sodium salt with NADPH. It can react with redox indicators, such as ferroin, in a three-phase system consisting of air, CAPPJ, and water. Without reducing agents in the water, the CAPPJ will oxidize the water and decrease the pH of the solution. When antioxidants such as ascorbate, 1,4-hydroquinone, or NADPH are present in the aqueous phase, the CAPPJ oxidizes these substances first and then oxidizes water to H<sub>2</sub>O<sub>2</sub>. The multielectron mechanisms of the redox reactions in the plasma-air/water interfacial area are discussed and analyzed. |
| format | Article |
| id | doaj-art-e534b53c1e3e419d8dfee3a55b6d20b5 |
| institution | Kabale University |
| issn | 2571-6182 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| series | Plasma |
| spelling | doaj-art-e534b53c1e3e419d8dfee3a55b6d20b52024-12-27T14:48:06ZengMDPI AGPlasma2571-61822024-11-017489190310.3390/plasma7040049Electrochemical Reactions at the Boundary Areas Between Cold Atmospheric Pressure Plasma, Air, and WaterJamiah Thomas0Alexander G. Volkov1Department of Chemical and Biochemical Sciences, Oakwood University, Huntsville, AL 35896, USADepartment of Chemical and Biochemical Sciences, Oakwood University, Huntsville, AL 35896, USAA cold atmospheric-pressure He-plasma jet (CAPPJ) interacts with air and water, producing reactive oxygen and nitrogen species (RONS), including biologically active ions, radicals, and molecules such as NO<sub>x</sub>, H<sub>2</sub>O<sub>2</sub>, HNO<sub>3</sub>, HNO<sub>2</sub>, and O<sub>3</sub>. These compounds can activate interfacial redox processes in biological tissues. The CAPPJ can oxidize N<sub>2</sub> to HNO<sub>3</sub> and water to H<sub>2</sub>O<sub>2</sub> at the interface between plasma and water. It can also induce the oxidation of water-soluble redox compounds in various organisms and in vitro. This includes salicylic acid, hydroquinone, and mixtures of antioxidants such as L (+)-ascorbic acid sodium salt with NADPH. It can react with redox indicators, such as ferroin, in a three-phase system consisting of air, CAPPJ, and water. Without reducing agents in the water, the CAPPJ will oxidize the water and decrease the pH of the solution. When antioxidants such as ascorbate, 1,4-hydroquinone, or NADPH are present in the aqueous phase, the CAPPJ oxidizes these substances first and then oxidizes water to H<sub>2</sub>O<sub>2</sub>. The multielectron mechanisms of the redox reactions in the plasma-air/water interfacial area are discussed and analyzed.https://www.mdpi.com/2571-6182/7/4/49antioxidantscold plasmainterfacial catalysismultielectron reactionplasma-activated waterreactive oxygen and nitrogen species |
| spellingShingle | Jamiah Thomas Alexander G. Volkov Electrochemical Reactions at the Boundary Areas Between Cold Atmospheric Pressure Plasma, Air, and Water Plasma antioxidants cold plasma interfacial catalysis multielectron reaction plasma-activated water reactive oxygen and nitrogen species |
| title | Electrochemical Reactions at the Boundary Areas Between Cold Atmospheric Pressure Plasma, Air, and Water |
| title_full | Electrochemical Reactions at the Boundary Areas Between Cold Atmospheric Pressure Plasma, Air, and Water |
| title_fullStr | Electrochemical Reactions at the Boundary Areas Between Cold Atmospheric Pressure Plasma, Air, and Water |
| title_full_unstemmed | Electrochemical Reactions at the Boundary Areas Between Cold Atmospheric Pressure Plasma, Air, and Water |
| title_short | Electrochemical Reactions at the Boundary Areas Between Cold Atmospheric Pressure Plasma, Air, and Water |
| title_sort | electrochemical reactions at the boundary areas between cold atmospheric pressure plasma air and water |
| topic | antioxidants cold plasma interfacial catalysis multielectron reaction plasma-activated water reactive oxygen and nitrogen species |
| url | https://www.mdpi.com/2571-6182/7/4/49 |
| work_keys_str_mv | AT jamiahthomas electrochemicalreactionsattheboundaryareasbetweencoldatmosphericpressureplasmaairandwater AT alexandergvolkov electrochemicalreactionsattheboundaryareasbetweencoldatmosphericpressureplasmaairandwater |