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Efficient and selectable production of reactive species using a nanosecond pulsed discharge in gas bubbles in liquid

Version 2 2024-06-06, 03:15
Version 1 2016-01-13, 10:52
journal contribution
posted on 2024-06-06, 03:15 authored by XJ Dai, CS Corr, SB Ponraj, M Maniruzzaman, AT Ambujakshan, Frank ChenFrank Chen, L Kviz, R Lovett, GD Rajmohan, DR de Celis, ML Wright, PR Lamb, YE Krasik, DB Graves, WG Graham, R D'Agostino, X Wang
A plasma gas bubble-in-liquid method for high production of selectable reactive species using a nanosecond pulse generator has been developed. The gas of choice is fed through a hollow needle in a point-to-plate bubble discharge, enabling improved selection of reactive species. The increased interface reactions, between the gas-plasma and water through bubbles, give higher productivity. H2O2 was the predominant species produced using Ar plasma, while predominantly NO3- and NO2 were generated using air plasma, in good agreement with the observed emission spectra. This method has nearly 100% selectivity for H2O2, with seven times higher production, and 92% selectivity for NO3-, with nearly twice the production, compared with a plasma above the water. A plasma gas bubble-in-liquid, with chosen gas, method is described. The gas of choice enables improved selection of reactive species and increased interface reactions enable higher productivity. "Ar" plasma produces a high concentration of H2O2, while "air" plasma produces high concentrations ofNO3- and NO2. The selectivity and productivity are much higher than with a plasma created above liquid.

History

Journal

Plasma processes and polymers

Volume

13

Pagination

306-310

Location

London, Eng.

ISSN

1612-8850

eISSN

1612-8869

Language

eng

Publication classification

C Journal article, C1 Refereed article in a scholarly journal

Copyright notice

2016, Wiley

Issue

3

Publisher

Wiley