Plasma-chemical kinetics in a parallel plate capillary plasma jet operated in He/H<sub>2</sub>O/O<sub>2 </sub>mixtures
POSTER
Abstract
Radio-frequency driven atmospheric pressure plasma jets are suitable sources for reactive species that can be used in a variety of applications in biomedicine and chemical conversion. In these applications, achieving selective and energy efficient species production is often essential. In this work, the plasma-chemical kinetics in a parallel plate plasma jet operated with a glass capillary between the two electrodes are investigated by zero-dimensional simulations.
The glass capillary serves as dielectric and yields a wide range of plasma operating conditions compared to similar sources operating without a dielectric barrier. Consequently, the utilisation of higher power and higher molecular gas admixtures are possible.
Here, we focus on identifying the optimum conditions for the production of H2O2 in this source. To do this, the plasma-chemical pathways and energy efficiency of H2O2 production are studied under a wide range of operating parameters, such as H2O- and O2-admixture, gas flow rate, and power deposition, including the use of pulsed power.
Simulated gas phase H2O2 concentrations are compared with those measured in plasma treated liquids using the same source.
The glass capillary serves as dielectric and yields a wide range of plasma operating conditions compared to similar sources operating without a dielectric barrier. Consequently, the utilisation of higher power and higher molecular gas admixtures are possible.
Here, we focus on identifying the optimum conditions for the production of H2O2 in this source. To do this, the plasma-chemical pathways and energy efficiency of H2O2 production are studied under a wide range of operating parameters, such as H2O- and O2-admixture, gas flow rate, and power deposition, including the use of pulsed power.
Simulated gas phase H2O2 concentrations are compared with those measured in plasma treated liquids using the same source.
*The authors would like to thank the financial support by DFG via SFB 1316 (Project B11)
Presenters
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Anna Lena Schöne
- Research Group for Biomedical Plasma Technology and Institute for Electrical Engineering and Plasma Technology, Ruhr-Universität Bochum, Germany
- Research Group for Biomedical Plasma Technology, Faculty of Electrical Engineering and Information Sciences, Ruhr University Bochum, Bochum, Germany.