Study of the plasma–liquid interaction for an argon nonthermal microwave plasma jet from the analysis of benzene degradation
Autor
Casado, Enrique
García, María C
Krawczyk, Dorota Anna
Romero-Salguero, F.J
Rodero Serrano, Antonio
Editor
WileyFecha
2020Materia
Microwave dischargeOptical emission spectroscopy
Oxidation
Plasma jet
Plasma treatment
Plasma-liquid interaction
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The interaction of an argon microwave plasma jet with a benzene layer on water has been analyzed under different conditions (power, gas flow, plasma-sample distance, and treatment time) in this study. Main products formed upon treatment are phenol, catechol, and nitrobenzene, which shows that this jet is a source of radicals •OH and •NO2, inducing benzene oxidation and nitration. Excited argon species in the plasma have been proven to play an outstanding role in degradation processes, which mostly occur at the gas phase. Results are compared with those from the direct interaction of the plasma jet with water. For this purpose, aqueous solutions of 3-coumarin carboxylic acid are treated and the hydroxylation of this compound is studied. The effect of the benzene layer preventing water evaporation is demonstrated.
Fuente
Casado, E., García, M. C., Krawczyk, D. A., Romero‐Salguero, F., & Rodero, A. (2020). Study of the plasma–liquid interaction for an argon nonthermal microwave plasma jet from the analysis of benzene degradation. Plasma Processes And Polymers, 17(9). https://doi.org/10.1002/ppap.202000030Versión del Editor
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