On the Change in Properties of Water Subjected to Low-Temperature Plasma Electrolysis

Surface oxidation of polyethylene using an atmospheric pressure glow discharge with liquid electrolyte cathode

“…The kinetic curves of H 2 O 2 formation in 0.05 M KCl solution leveled off in the treatment time range of 15-40 min. These values are close to data [16] mentioned above. It can be seen that Cl − ions inhibit H 2 O 2 formation, as has been observed previously in other studies [16,27].…”

“…These values are close to data [16] mentioned above. It can be seen that Cl − ions inhibit H 2 O 2 formation, as has been observed previously in other studies [16,27]. Although the H 2 O 2 concentrations in distilled water are over two times higher than those in KCl solution, the total content of oxygen-containing groups formed in KCl solution is close to the total group content formed in distilled water.…”

“…Kanzaki et al [31] showed that, in the APGD system, the yields of oxidative products such as H 2 O 2 in aqueous solutions of some inorganic salts were about seven times higher than the values expected from the Faraday law. The effects of APGD action and electrolysis on water under the same conditions were compared in a previous study [16]. The hydrogen peroxide formation in distilled water was clearly observed under APGD action.…”

“…Many researchers reported that primary active species in this type of excitation source were solvated electrons and ·OH radicals. It was also observed that hydrogen peroxides were produced in the secondary reactions of ·OH radical dimerization like 2·OH + H 2 O → H 2 O 2 +H 2 O regardless of plasma-forming gases [14][15][16]. The yields of solvated electrons and ·OH radicals were 3.3 and 6.5 mol/faraday, respectively [14].…”

“…The ·OH radical yield of 7.3-8.3 mol/faraday was also obtained in another study [15]. The H 2 O 2 concentration limit was varied from 7 to 5 mmol/L for distilled water and 0.005 M NaCl solutions, respectively, under discharge current 0.2 A [16]. The molecular oxygen has to be formed as a result of the well-known secondary reactions [5] …”