Special issue: Plasma and Liquids

Cold plasma oxidation of harmful algae and associated metabolite BMAA toxin in aqueous suspension

“…In a recent special issue of this journal, Plasma Processes and Polymers , which was devoted to the theme “plasma and liquids,” there were several articles that dealt with AP plasmas immersed in, or in direct contact with a liquid, water being the liquid of choice in most cases . We shall later be referring in more detail to one of those articles, namely that by Tampieri et al They reported a clever bench‐top AP plasma reactor system based on a hollow needle electrode in contact with (deliberately contaminated) water, through which the oxidant gas was fed.…”

Functionalization and exfoliation of graphite with low temperature pulse plasma in distilled water

“…Also, the observation of strong molecular nitrogen bands in the plasma could imply the presence of highly reactive nitrogen species that can interact with the liquid solution and lead to the formation of numerous nitrogen-containing chemical species. 28,33–39…”

“…Some authors observed the formation of different nitrogen-containing chemical species when the plasma is ignited in air, and they assigned the liquid acidification to species such as NO 2 − for example. 33–39…”

“…Beyond the intermediate plasma regime, around 15–20 minutes, the water vapour in the plasma volume becomes significant, and could imply the formation of H 2 O 2 and hydrated H + due to the formation and degradation of the water vapour, as observed by other authors. 32,33…”

“…29–31 For example, in the case of plasma applied to a water surface, hydrogen peroxide is formed through the recombination reaction of OH, produced from the water dissociation due to the plasma/water interaction. 32,33 Others authors have shown the formation of nitrogen-based ions, like NO 2 − or NO 3 − , in the case of plasma ignited in air at the liquid surface. 34–39 In parallel, the application of a pulsed discharge on a liquid surface can physically distort it, and leads to instabilities at the plasma/liquid interface.…”