Title :
Visualization of Electrolytic Reactions at a Plasma-Liquid Interface
Author :
Rumbach, Paul ; Griggs, Nathaniel ; Sankaran, R. Mohan ; Go, David B.
Author_Institution :
Dept. of Aerosp. & Mech. Eng., Univ. of Notre Dame, Notre Dame, IN, USA
Abstract :
A dc microplasma jet in flowing argon (Ar) gas is used to electrolyte aqueous sodium chloride (NaCl) solutions. Electrolytic reactions at the plasma-liquid interface make the solution more basic and result in H2 gas evolution. The pH change is visualized using a pH sensitive dye, which becomes dark green under basic conditions. The basic solution created at the plasma-liquid interface is subsequently transported to the bottom of the reactor vessel by an apparent electrohydrodynamic flow.
Keywords :
argon; electrolysis; hydrogen; pH; plasma chemistry; plasma jets; Ar; H2; H2 gas evolution; argon gas; dc microplasma jet; electrohydrodynamic flow; electrolytic reactions; electrolyze aqueous sodium chloride solutions; pH sensitive dye; plasma-liquid interface; Argon; Cathodes; Electrohydrodynamics; Inductors; Liquids; Plasmas; Visualization; Atmospheric-pressure plasmas; pH measurements; plasma chemistry; plasma materials processing; plasma materials processing.;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2014.2322976
