Open position: Bachelor thesis
Characterization of the hydrogen peroxide production of an atmospheric pressure plasma jet operated with ns pulses
The transport of reactive species from an atmospheric pressure plasma jet (APPJ) into liquids offers various applications, such as the plasma-assisted biocatalysis. Previous work has demonstrated that APPJs operated in noble gases with RF excitation can be used effectively for plasma-assisted biocatalysis. However, the use of noble gases is not economical or sustainable for large-scale applications, so alternative operating gases such as nitrogen or air are attractive. In addition to RF excitation, the capillary plasma jet used can also be operated with higher voltage pulses in the ns range, so that operation in nitrogen or air is possible.
In this bachelor thesis, the hydrogen peroxide production of the Capillary Plasma Jet operated with ns pulses is to be investigated, as hydrogen peroxide is the required species in biocatalysis. This is initially carried out in helium in order to ensure a direct comparison with RF operation. Subsequently, the operating gas can be changed to nitrogen or air and the hydrogen peroxide production can be characterized in this mode. In order to be able to apply the investigations to biocatalysis, the hydrogen peroxide concentration in plasma-treated liquids is measured using spectrophotometry and UV absorption.
Contact:
Steffen Schüttler (NB 5/66),
Judith Golda (NB 5/127),
Prerequisites:
Previous knowledge of plasma physics is desirable, but not required
When?: by arrangement
Lab tour: NB 5/28