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Observation of currentless redox reactions on surface of water jet immersed in low-pressure plasma
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| Title: | Observation of currentless redox reactions on surface of water jet immersed in low-pressure plasma |
| Authors: | Ito, Takeshi Browse this author | | Sakka, Tetsuo Browse this author | | Sasaki, Koichi Browse this author →KAKEN DB |
| Keywords: | currentless redox reactions | | water jet | | plasma-liquid interaction |
| Issue Date: | 21-Jun-2022 |
| Publisher: | IOP Publishing |
| Journal Title: | Plasma Sources Science and Technology |
| Volume: | 31 |
| Issue: | 6 |
| Start Page: | 06LT02 |
| Publisher DOI: | 10.1088/1361-6595/ac7745 |
| Abstract: | We investigated oxidation-reduction reactions on the surface of water jet immersed in a low-pressure inductively coupled helium plasma. The electrical potential of the water jet was floating, and no electrical current was supplied from the plasma to the water jet. We observed the productions of molecular hydrogen and molecular oxygen. We also observed negligible consumption of water vapor in the gas phase, suggesting that the productions of hydrogen and oxygen were not owing to the conversion from water vapor. When we employed silver nitrate solution instead of pure water, we observed the decrease in the production rate of hydrogen, whereas the production rate of oxygen was the same in pure water and silver nitrate solution. In addition, we found the synthesis of silver particulates in the silver nitrate solution, indicating the competition between the reductions of H+ and Ag+. Thus, the experimental results reveal the simultaneous oxidation and reduction at the same plasma-liquid interface. |
| Rights: | This is the Accepted Manuscript version of an article accepted for publication in Plasma Sources Science and Technology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1361-6595/ac7745. | | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/89950 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 佐々木 浩一
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