0604679 - ÚFP 2025 RIV US eng J - Journal Article
Fujera, Jiří - Hoffer, Petr - Prukner, Václav - Rotondo, P. R. - Arora, Garima - Jirásek, Vít - Lukeš, Petr - Šimek, Milan
Surface DBD in moist air for nitrogen fixation: a comparative study of pulsed versus amplitude-modulated AC powered discharge.
Journal of Physics D-Applied Physics. Roč. 57, č. 40 (2024), č. článku 405205. ISSN 0022-3727. E-ISSN 1361-6463
R&D Projects: GA ČR(CZ) GA24-10903S
Institutional support: RVO:61389021
Keywords : air * dbd * micro-discharge * paw * water
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 3.1, year: 2023 ; AIS: 0.633, rok: 2023
Method of publishing: Open access
Result website:
https://iopscience.iop.org/article/10.1088/1361-6463/ad5f99DOI: https://doi.org/10.1088/1361-6463/ad5f99

Surface DBD (SDBD) discharge maintained in moist air in the immediate vicinity of the water surface is an effective source of reactive species for the production of plasma-activated water (PAW). In this work, we investigated the water activation process for two different DBD energization methods - i.e. using periodic HV pulses with nanosecond risetimes and amplitude-modulated HV AC. We combined UV-vis-NIR ICCD spectroscopy with electrical characteristics to determine the basic characteristics of SDBD microfilaments. Formation of N2O5/NO2/N2O/H2O2/NO2−/NO3− species was followed and the production yields of species generated in PAW (H2O2/NO2−/NO3−) were determined in a flow-through reactor under well-defined and stable discharge conditions. Both energization methods reached comparable energy efficiencies of nitrogen fixation in the range of 1-6 g kWh−1 with minimal concentrations of H2O2 (10 s μM). However, the AC-powered SDBD produced mainly NO3− with minimal NO2− (1/10 of NO3−), while in the case of pulsed SDBD the better-balanced NO2−/NO3− ratio was achieved.
Permanent Link: https://hdl.handle.net/11104/0362193