Atmospheric plasma generates oxygen atoms as oxidizing species in aqueous solutions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F16%3A00466374" target="_blank" >RIV/61389021:_____/16:00466374 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/0022-3727/49/40/404002" target="_blank" >http://dx.doi.org/10.1088/0022-3727/49/40/404002</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0022-3727/49/40/404002" target="_blank" >10.1088/0022-3727/49/40/404002</a>

Result language
angličtina
Original language name
Atmospheric plasma generates oxygen atoms as oxidizing species in aqueous solutions
Original language description
A remote microscale atmospheric pressure plasma jet (µAPPJ) with He, He/H2O, He/O2, and He/O2/H2O gas mixtures was used to study the transport of reactive species from the gas phase into the liquid and the following aqueous phase chemistry. The effects induced by the µAPPJ in water were quantitatively studied using phenol as a chemical probe and by measuring H2O2 concentration and pH values. These results were combined with the analysis of the absolute densities of the reactive species and the modeling of convective/diffusion transport and recombination reactions in the effluent of the plasma jet. Additionally, modified plasma jets were used to show that the role of emitted photons in aqueous chemistry is negligible for these plasma sources. The fastest phenol degradation was measured for the He/O2 plasma, followed by He/H2O, He/O2/H2O, and He plasmas. The modeled quantitative flux of O atoms into the liquid in the He/O2 plasma case was highly comparable with the phenol degradation rate and showed a very high transfer efficiency of reactive species from the plasma into the liquid, where more than half of the O atoms leaving the jet nozzle entered the liquid.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BL - Plasma physics and discharge through gases
OECD FORD branch
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Project
<a href="/en/project/LD14080" target="_blank" >LD14080: Chemical processes initiated by electrical discharge plasma in aqueous liquids for new applications</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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