Reduced electric field and gas temperature effects on chemical product dynamics in air surface dielectric barrier discharges: from macro-physical parameters to micro-chemical mechanisms

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Liu, Kun
Zuo, Jie
Ran, Congfu
Yang, Minghao
Geng, Wenqiang
Liu, Shiting
Ostrikov, Kostya Ken
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2022
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Abstract

To gain insights into the mechanisms of plasma chemical product interactions, the dynamic changes of the surface dielectric barrier discharge (SDBD) products are experimentally related to the reduced electric field and gas temperature. The higher applied voltage and frequency cause faster product changes from the O3-containing to the O3-free state, while raising the electron energy and gas temperature. The electron energy affects the electron collision reactions and the production of various reactive species, steering the chemical reactions towards the predominant production of NO over O3. The gas temperature affects the generation and quenching rates of the key products. Collectively, this work bridges macro-physical parameters and micro-chemical mechanisms through the electron energy and gas temperature effects, and contributes to better understanding of the physico-chemical processes in low-temperature plasmas.

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Physical Chemistry Chemical Physics

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24

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15

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Science & Technology

Physical Sciences

Chemistry, Physical

Physics, Atomic, Molecular & Chemical

Chemistry

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Liu, K; Zuo, J; Ran, C; Yang, M; Geng, W; Liu, S; Ostrikov, KK, Reduced electric field and gas temperature effects on chemical product dynamics in air surface dielectric barrier discharges: from macro-physical parameters to micro-chemical mechanisms, Physical Chemistry Chemical Physics, 2022, 24 (15), pp. 8940-8949

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