Singlet delta oxygen production in a 2D micro-discharge array in air: Effect of gas residence time and discharge power

Gaurav Nayak; João Santos Sousa; Peter J. Bruggeman

doi:10.1088/1361-6463/aa5764

Singlet delta oxygen production in a 2D micro-discharge array in air: Effect of gas residence time and discharge power

Gaurav Nayak, João Santos Sousa, Peter J. Bruggeman

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

The production of singlet delta oxygen (O₂(a ¹Δ_g)) is of growing interest for many applications. We report on the measurement of O₂(a ¹Δ_g) and ozone (O₃) in a room temperature atmospheric pressure discharge in dry air. The plasma source is a 2D array of micro-discharges generated by an alternating current voltage at 20 kHz. The study focuses on the effect of gas flow through the discharge. The maximum investigated flow rate allows reducing the gas residence time in the discharge zone to half the discharge period. Results indicate that the residence time and discharge power have a major effect on the O₂(a ¹Δ_g) production. Different O₂(a ¹Δ_g) density dependencies on power are observed for different flow rates. Effects of collisional quenching on the as-produced and measured O₂(a ¹Δ_g) densities are discussed. The flow rate also allows for control of the O₂(a ¹Δ_g) to O₃ density ratio in the effluent from 0.7 to conditions of pure O₃.

Original language	English (US)
Article number	105205
Journal	Journal of Physics D: Applied Physics
Volume	50
Issue number	10
DOIs	https://doi.org/10.1088/1361-6463/aa5764
State	Published - Feb 10 2017

Bibliographical note

Funding Information:
This research has been funded by the University of Minnesota.

Publisher Copyright:
© 2017 IOP Publishing Ltd.

Keywords

air chemistry
dielectric barrier discharge
micro-discharge
singlet delta oxygen

Publisher link

10.1088/1361-6463/aa5764

Find It

Find It at U of M Libraries

Cite this

@article{198697456a5a45df84bb824ccc2161cc,

title = "Singlet delta oxygen production in a 2D micro-discharge array in air: Effect of gas residence time and discharge power",

abstract = "The production of singlet delta oxygen (O2(a 1Δg)) is of growing interest for many applications. We report on the measurement of O2(a 1Δg) and ozone (O3) in a room temperature atmospheric pressure discharge in dry air. The plasma source is a 2D array of micro-discharges generated by an alternating current voltage at 20 kHz. The study focuses on the effect of gas flow through the discharge. The maximum investigated flow rate allows reducing the gas residence time in the discharge zone to half the discharge period. Results indicate that the residence time and discharge power have a major effect on the O2(a 1Δg) production. Different O2(a 1Δg) density dependencies on power are observed for different flow rates. Effects of collisional quenching on the as-produced and measured O2(a 1Δg) densities are discussed. The flow rate also allows for control of the O2(a 1Δg) to O3 density ratio in the effluent from 0.7 to conditions of pure O3.",

keywords = "air chemistry, dielectric barrier discharge, micro-discharge, singlet delta oxygen",

author = "Gaurav Nayak and Sousa, {Jo{\~a}o Santos} and Bruggeman, {Peter J.}",

note = "Funding Information: This research has been funded by the University of Minnesota. Publisher Copyright: {\textcopyright} 2017 IOP Publishing Ltd.",

year = "2017",

month = feb,

day = "10",

doi = "10.1088/1361-6463/aa5764",

language = "English (US)",

volume = "50",

journal = "Journal Physics D: Applied Physics",

issn = "0022-3727",

publisher = "IOP Publishing Ltd.",

number = "10",

}

TY - JOUR

T1 - Singlet delta oxygen production in a 2D micro-discharge array in air

T2 - Effect of gas residence time and discharge power

AU - Nayak, Gaurav

AU - Sousa, João Santos

AU - Bruggeman, Peter J.

PY - 2017/2/10

Y1 - 2017/2/10

N2 - The production of singlet delta oxygen (O2(a 1Δg)) is of growing interest for many applications. We report on the measurement of O2(a 1Δg) and ozone (O3) in a room temperature atmospheric pressure discharge in dry air. The plasma source is a 2D array of micro-discharges generated by an alternating current voltage at 20 kHz. The study focuses on the effect of gas flow through the discharge. The maximum investigated flow rate allows reducing the gas residence time in the discharge zone to half the discharge period. Results indicate that the residence time and discharge power have a major effect on the O2(a 1Δg) production. Different O2(a 1Δg) density dependencies on power are observed for different flow rates. Effects of collisional quenching on the as-produced and measured O2(a 1Δg) densities are discussed. The flow rate also allows for control of the O2(a 1Δg) to O3 density ratio in the effluent from 0.7 to conditions of pure O3.

AB - The production of singlet delta oxygen (O2(a 1Δg)) is of growing interest for many applications. We report on the measurement of O2(a 1Δg) and ozone (O3) in a room temperature atmospheric pressure discharge in dry air. The plasma source is a 2D array of micro-discharges generated by an alternating current voltage at 20 kHz. The study focuses on the effect of gas flow through the discharge. The maximum investigated flow rate allows reducing the gas residence time in the discharge zone to half the discharge period. Results indicate that the residence time and discharge power have a major effect on the O2(a 1Δg) production. Different O2(a 1Δg) density dependencies on power are observed for different flow rates. Effects of collisional quenching on the as-produced and measured O2(a 1Δg) densities are discussed. The flow rate also allows for control of the O2(a 1Δg) to O3 density ratio in the effluent from 0.7 to conditions of pure O3.

KW - air chemistry

KW - dielectric barrier discharge

KW - micro-discharge

KW - singlet delta oxygen

UR - http://www.scopus.com/inward/record.url?scp=85014329866&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85014329866&partnerID=8YFLogxK

U2 - 10.1088/1361-6463/aa5764

DO - 10.1088/1361-6463/aa5764

M3 - Article

AN - SCOPUS:85014329866

SN - 0022-3727

VL - 50

JO - Journal Physics D: Applied Physics

JF - Journal Physics D: Applied Physics

IS - 10

M1 - 105205

ER -

Singlet delta oxygen production in a 2D micro-discharge array in air: Effect of gas residence time and discharge power

Abstract

Bibliographical note

Keywords

Publisher link

Find It

Other files and links

Fingerprint

Cite this