Surface DBD in moist air for nitrogen fixation: a comparative study of pulsed versus amplitude-modulated AC powered discharge

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F24%3A00604679" target="_blank" >RIV/61389021:_____/24:00604679 - isvavai.cz</a>

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1088/1361-6463/ad5f99" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6463/ad5f99</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6463/ad5f99" target="_blank" >10.1088/1361-6463/ad5f99</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Surface DBD in moist air for nitrogen fixation: a comparative study of pulsed versus amplitude-modulated AC powered discharge

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Surface DBD in moist air for nitrogen fixation: a comparative study of pulsed versus amplitude-modulated AC powered discharge

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA24-10903S" target="_blank" >GA24-10903S: Výzkum vzniku nanokavit s následným vznikem a multiplikací elektronů ve vodě pomocí laserových diagnostik.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Physics D-Applied Physics

ISSN

0022-3727

e-ISSN

1361-6463

Svazek periodika

57

Číslo periodika v rámci svazku

40

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

405205

Kód UT WoS článku

001270280700001

EID výsledku v databázi Scopus

2-s2.0-85199283007