Key physicochemical parameters influencing reactive species in Plasma‐Processed‐Air (PPA) originated from microwave discharge

Yijiao, Y., Weihe, T., Stachowiak, J., Ehlbeck, J., Schnabel, U. and Karatzas, K.-A. (2025) Key physicochemical parameters influencing reactive species in Plasma‐Processed‐Air (PPA) originated from microwave discharge. Plasma Processes and Polymers. ISSN 1612-8869 doi: 10.1002/ppap.70092

Abstract/Summary

Fourier transformation infrared (FTIR) spectroscopy was used to identify the antimicrobial chemical composition of plasma processed air (PPA) generated by a microwave plasma source—MidiPLexc. NO was found to be the first product with maximum concentration of 1030 ppm. NO2 was the dominant long‐living species with maximum concentration of 10 520 ppm, which was in equilibrium with its dimer—N2O4. Key physicochemical parameters influencing the concentrations were identified. Elevated input power mainly promoted NO2 generation and 1.5 SLM was determined to be the critical flow rate for the maximum NO2 yield. NO2 concentration was reduced by 40% under humid condition with 50W power input. A prediction model of NOx generation was made based on specific input energy (SIE).

Item Type	Article
URI	https://centaur.reading.ac.uk/id/eprint/127156
Identification Number/DOI	10.1002/ppap.70092
Refereed	Yes
Divisions	Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Food Microbial Sciences Research Group
Publisher	Wiley
Download/View statistics	View download statistics for this item