Revisiting the application of molecular probe diagnostics on quantifying aqueous OH radicals in plasma–liquid systems

Tang, Qingjin, Zhang, Mingjia, Wu, Binhong, Wang, Xin, Tu, Xin ORCID: 0000-0002-6376-0897, Ostrikov, Kostya Ken, Liu, Linsheng and Chen, Qiang (2024) Revisiting the application of molecular probe diagnostics on quantifying aqueous OH radicals in plasma–liquid systems. Plasma Processes and Polymers.

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Official URL: http://dx.doi.org/10.1002/ppap.202300229

Abstract

<jats:title>Abstract</jats:title><jats:p>We revisit one of the most used techniques for quantifying the aqueous OH radicals (OH<jats:sub>aq</jats:sub>) in plasma–liquid systems, the molecular probe method which obtains the [OH<jats:sub>aq</jats:sub>] by measuring a stable material formed through a rapid reaction between the molecular probe and the OH<jats:sub>aq</jats:sub>. In this study, we used disodium terephthalate (NaTA) as the molecular probe; the experimental results with a theoretical analysis suggest that to obtain the correct OH<jats:sub>aq</jats:sub> concentration, the concentration of the molecular probe should be greater than a certain value, which depends on the types of the plasma–liquid systems. However, this is not the case in most of the existing reports in which the NaTA is often much less than the requisite value.</jats:p>

Item Type:	Article
Divisions:	Faculty of Science and Engineering > School of Electrical Engineering, Electronics and Computer Science
Depositing User:	Symplectic Admin
Date Deposited:	08 Apr 2024 09:08
Last Modified:	12 Apr 2024 09:22
DOI:	10.1002/ppap.202300229
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3180112