Investigation of Filamentary and Diffuse DBD in CO2 by Means of InSitu FTIR Absorption Spectroscopy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00142390" target="_blank" >RIV/00216224:14310/25:00142390 - isvavai.cz</a>

Result on the web

<a href="https://pubs.acs.org/doi/full/10.1021/acs.jpcc.5c02224" target="_blank" >https://pubs.acs.org/doi/full/10.1021/acs.jpcc.5c02224</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.5c02224" target="_blank" >10.1021/acs.jpcc.5c02224</a>

Result language

angličtina

Original language name

Investigation of Filamentary and Diffuse DBD in CO2 by Means of InSitu FTIR Absorption Spectroscopy

Original language description

This work investigates CO2dielectric barrier discharges (DBDs) at atmospheric pressure in the filamentary and diffuse regimes for the first time using in situ FTIR absorption measurements. The conversion factor of CO2is determined and is consistent with the results obtained for DBDs in the literature, following a power law with respect to the specific energy input in both regimes. Vibrational temperatures for CO2and CO molecules as well as rotational temperature are also determined within the discharge. A noticeably high vibrational temperature of CO is observed for low specific energy input (SEI). It drops abruptly when increasing the SEI which is attributed to strong vibrational-to-translational energy transfers by O atoms coming from CO2dissociation. Except that, the ordering of the different temperatures is similar to the results reported for other CO2discharges generated at lower pressures: the vibrational temperature of CO is higher than those of the different vibrational modes of CO2. The latter are slightly higher than the rotational temperature of the gas for the diffuse mode, whereas they are almost the same for the filamentary mode. The evolution of the measured parameters as a function of the specific energy input is then discussed and a detailed comparison of the two different regimes is carried out. These data together with the knowledge of the reduced electric field in the diffuse regime, which is included in the range 120–140 Td for all conditions, can be of significant importance for further studies exploring the fundamentals of CO2plasma chemistry at atmospheric pressure, serving as reference for kinetic models.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

1932-7455

Volume of the periodical

129

Issue of the periodical within the volume

38

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

16967-16976

UT code for WoS article

001572347600001

EID of the result in the Scopus database

2-s2.0-105017127099