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Efficient and Selectable Production of Reactive Species Using a Nanosecond Pulsed Discharge in Gas Bubbles in Liquid
Author(s) -
Dai Xiujuan J.,
Corr Cormac S.,
Ponraj Sri B.,
Maniruzzaman Mohammad,
Ambujakshan Arun T.,
Chen Zhiqiang,
Kviz Ladge,
Lovett Robert,
Rajmohan Gayathri D.,
de Celis David R.,
Wright Marion L.,
Lamb Peter R.,
Krasik Yakov E.,
Graves David B.,
Graham William G.,
d'Agostino Riccardo,
Wang Xungai
Publication year - 2016
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.201500156
Subject(s) - plasma , nanosecond , analytical chemistry (journal) , selectivity , bubble , chemistry , materials science , sparging , chromatography , mechanics , optics , laser , biochemistry , physics , quantum mechanics , catalysis
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. H 2 O 2 was the predominant species produced using Ar plasma, while predominantly N O 3 −and NO 2 were generated using air plasma, in good agreement with the observed emission spectra. This method has nearly 100% selectivity for H 2 O 2 , with seven times higher production, and 92% selectivity for N O 3 − , with nearly twice the production, compared with a plasma above the water.