Efficient and Selectable Production of Reactive Species Using a Nanosecond Pulsed Discharge in Gas Bubbles in Liquid

Xiujuan J. Dai*, Cormac S. Corr, Sri B. Ponraj, Mohammad Maniruzzaman, Arun T. Ambujakshan, Zhiqiang Chen, Ladge Kviz, Robert Lovett, Gayathri D. Rajmohan, David R. De Celis, Marion L. Wright, Peter R. Lamb, Yakov E. Krasik, David B. Graves, William G. Graham, Riccardo D'Agostino, Xungai Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

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  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 , with nearly twice the production, compared with a plasma above the water.

Original languageEnglish
Pages (from-to)306-310
Number of pages5
JournalPlasma Processes and Polymers
Volume13
Issue number3
Early online date12 Nov 2015
DOIs
Publication statusPublished - Mar 2016

Keywords

  • nanosecond
  • plasma in liquid
  • pulsed discharges
  • reactive species
  • selectivity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Polymers and Plastics

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