Concentration distributions and reaction pathways of species in the mass transfer process from atmospheric pressure plasma jet to water
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Plasma–liquid interactions are becoming an increasingly significant topic in the field of low-temperature plasma science and technology. This work builds up a drift-diffusion model to numerically investigate concentration distributions and reaction pathways of various species in the mass transfer process from atmospheric pressure plasma jet (APPJ) to water. The simulation results indicate that H2O2 is a persistent molecular compound in the liquid phase region. Except for H2O2, the species concentrations of O3 and OH are relatively higher in the shallow region of water. The species O3, OH, and HO2 have approximately the same penetration depth in the liquid region. H2O2 is primarily generated by O(1D) + H2O → H2O2 due to the continuous mass transfer of O(1D) from APPJ to water. Furthermore, 2OH → H2O2 also produces a great deal of H2O2 in the liquid phase region.
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