Quantification of Plasma-Produced Hydroxyl Radicals in Solution and their Dependence on the pH
Francesco Tampieri, Maria‐Pau Ginebra, Cristina Canal
Abstract
HO radicals are the most important reactive species generated during water treatment by non-thermal plasma devices. In this letter, we report the first quantification of the steady-state concentration and lifetime of plasma-produced hydroxyl radicals in water solutions at pH 3 and 7, and we discuss the differences based on their reactivity with other plasma-generated species. Finally, we show to what extent the use of chemical probes to quantify short-lived reactive species has an influence on the results and that it should be taken into account.
Topics & Concepts
ChemistryRadicalPlasmaHydroxyl radicalReactivity (psychology)PhotochemistryNonthermal plasmaThermalReactive oxygen speciesSteady state (chemistry)Organic chemistryThermodynamicsBiochemistryPhysicsAlternative medicineMedicinePathologyQuantum mechanicsPlasma Applications and DiagnosticsPlasma Diagnostics and ApplicationsSurface Modification and Superhydrophobicity