# Ozone Behavior on Catalytic Probes and Its Application Studied in Gas Flow Downstream of Dielectric Barrier Discharge Ozonizers

Ta Lun Sung, Chung Ming Liu, Shigeru Ono, Shinriki Teii, Kungen Teii, Kenji Ebihara

Research output: Contribution to journalArticlepeer-review

## Abstract

The ozone behavior on heated catalytic probe surfaces is examined in gas flow downstream of atmospheric-pressure dielectric barrier discharge ozonizers. Negative and positive variations in the probe voltage as a function of probe heating current enable one to discriminate catalytic dissociation of ozone at low temperatures and catalytic recombination of oxygen radicals at high temperatures, respectively, on the probe surface. The loss coefficient of ozone on the probe surface derived from the amount of heat removed by catalytic dissociation is of the order of $10^{-4}$ , which increases with increasing probe temperature. The probe temperature decrease per ozone concentration by catalytic dissociation of ozone as a measure of measurement sensitivity increases with probe temperature and is measured typically in the range of 0.5-0.8 Kg $^{-1}\text{m}^{3}$ at ozone concentrations of 10 and 17 gm $^{-3}$ , respectively, showing the applicability of a catalytic probe to a simple sensor body.

Original language English 9311868 182-186 5 IEEE Transactions on Plasma Science 49 1 https://doi.org/10.1109/TPS.2020.3040025 Published - Jan 2021

## All Science Journal Classification (ASJC) codes

• Nuclear and High Energy Physics
• Condensed Matter Physics