Glow Discharge Electrolysis of Aqueous Sulfuric Acid Solution in Various Atmosphere

Abstract

The anode glow discharge electrolysis was carried out in aqueous sulfuric acid solution, and the yields of oxidation products, H202, H2SO.~, and H2S208, were examined in various atmospheric gases, H2, He, N2, and Ar. When the vapor pressure of water was suppressed by means of intermittent electrolysis, the yields of the peroxides were found to depend clearly on the atmospheric gases. The plasma diagnostics, emission spectra, double-probe method, etc., revealed that the plasma state in the gas phase depended on the gases that contained significant amounts of water vapor. Comparing the oxidation yields with the results on the plasma diagnostics, it was found that (i) the radical formation in the gas phase does

Operating mechanism of the electrolyte cathode atmospheric glow discharge

“…The direct contact of an aqueous electrolyte and a plasma anode as a unique electrochemical technique, the so called glow discharge electrolysis (GDE), has been used solely to produce peroxide compounds in the electrolyte [1,2,3,4,5,6]. The product yields and the influence of the glow discharge plasma on the oxidation processes taking place in the solution were thoroughly investigated.…”

“…Points for 0.5 and 1 mol/L activity are calculated from U cf values reported in[1] and[4], respectively…”

Plasma Process on Ionic Liquid Substrate for Morphology Controlled Nanoparticles

“…The interaction of discharge plasmas with liquids [1][2][3][4][5] is one of the active topics in the realm of recent plasma science and science technology. It has pioneered new channels relating to nano material creation based on their distinct properties such as ultra-high density, high reactivity, high process rate, and so on.…”

Preparation, characterization and catalytic property of CuO nano/microspheres via thermal decomposition of cathode-plasma generating Cu2(OH)3NO3 nano/microspheres

“…It was conventionally performed in a gas/liquid dual-phase system, in which two asymmetric electrodes were placed close to or in the electrolyte, and the plasma was ignited on the surface of the working electrode under a high cell potential. Many works have already been conducted in order to obtain a comprehensive understanding of the GDE [2][3][4], and it is found that the main influencing factors in the formation of the plasma are applied potential, geometries of electrodes, temperature of the electrolyte, properties of the electrolyte, and its flow dynamics [5]. It is well known that an obvious feature of the GDE process is the non-Faraday behavior [2,6], that is, the chemical yield around the discharge electrode is much higher than those calculated from the Faraday law.…”