The paper demonstrates the possibility of using a dielectric barrier discharge for the deposition of polymer organosilicate films on the surface of glass substrates. A planar barrier discharge of atmospheric pressure was excited in a flow reactor in an atmosphere of (Bis(trimethylsilyl)amine at a fixed flow rate. Helium as the carrier gas was used. The carrier gas and working fluid flow rates were fixed at 45 ml/s and 0.2 ml/s, respectively. The frequency of the dielectric barrier discharge was 50 Hz, the average discharge current was 3 mA at a total power put into the discharge of 24 VA. The deposition time varied in the range of 30-1200 s. It was shown that under the conditions studied, the discharge has a filamentous form. The study of the surface morphology and elemental composition of the deposited film was carried out using scanning electron microscopy and energy-dispersive spectroscopy. Surface wettability was determined by the contact angle method and the method of photofixation of drops. The elemental composition of the deposited coatings indicates the formation of an organosilicon film. The contact angle method for polar (distilled water) and non-polar (diiodomethane, glycerol) liquids showed that the wettability of the deposited coatings is higher than that of the original substrate. Additionally, the effect of storage time of deposited coatings (under normal conditions) on their properties was studied. It was found that the storage effect does not have a significant effect on the wettability of the films.

The kinetic features of the oxidation–reduction processes of chromium ions during the treatment of potassium dichromate aqueous solutions with concentrations of 0.092–0.39 mmol/L in atmospheric-pressure dc discharge in oxygen at currents of 20–60 mA have been investigated. The solution served as the cathode of the discharge. It has been found that the discharge induces reversible Cr 6+ ↔ Cr 3+ redox reactions of chromium ions. The limiting degree of reduction of Cr 6+ ions slightly depends on the discharge current and decreases with an increase in the initial concentration of the solution. The apparent rate constants of oxidation and reduction have been found, and the energy efficiency of the process has been evaluated. The obtained data are compared with previously obtained results for electric discharge in air and argon. It has been shown that the discharge in argon is the most effective for carrying out the reduction process.

The kinetic regularities of the processes of oxidation-reduction of chromium ions under the action of a direct current discharge of atmospheric pressure in air, oxygen and argon on an aqueous solution of potassium dichromate at currents of 20–60 mA and concentrations 0.092–0.4 mmol·l −1 are investigated. The solution served as the cathode of the discharge. It was found that the effect of a discharge in any gas on a solution stimulates the reversible Cr 6+ ↔Cr 3+ reactions of oxidation-reduction of chromium ions. The apparent constants of the rates of oxidation and reduction and their dependence on the discharge current and initial concentration are found. The energy efficiency of the process is estimated. It is shown that the discharge in argon is most effective for carrying out the reduction process.

Kinetic features of the oxidation–reduction processes of chromium ions in a potassium dichromate aqueous solution subjected to treatment in argon atmospheric-pressure dc discharge have been investigated in the discharge current range of 20–80 mA and the dichromate concentration range of 0.1–0.5 mmol/L. The solution served as the discharge cathode. It has been revealed that the discharge treatment stimulates the reduction reactions of Cr6+ to Cr3+ ions and the reverse reactions of oxidation of Cr3+ to Cr6+ ions; i.e., the oxidation–reduction reactions are reversible. The limiting degree of reduction of Cr6+ ions has been found to depend on the discharge current and the initial concentration of the solution. The apparent rate constants of oxidation and reduction have been determined, and the energy efficiency of the process has been evaluated. The data are compared with the results obtained earlier for a discharge in air.

The kinetics of the processes of simultaneous reduction of Cr(VI) and degradation of phenol during the treatment of their aqueous solutions with different initial concentrations using an atmosphericpressure air direct-current discharge have been studied. The solution served as the discharge cathode. It has been shown that the discharge treatment leads to a decrease in the concentration of both Cr(VI) and phenol. Phenol additives accelerate the Cr(VI) reduction process and make it irreversible. The phenol degradation and Cr(VI) reduction kinetics are described well (R2 > 0.99) by the pseudo-first-order rate equation in phenol and Cr(VI) concentrations, respectively. The apparent rate constants of the processes have been determined, the energy efficiency of the processes has been evaluated, and possible mechanisms of the proceeding reactions have been discussed.

The kinetics of reduction of Cr(VI) by treating its aqueous solution in atmospheric pressure dc discharge in air has been studied at the discharge current range of 20–80 mA and the concentration range of 1.25–12.5 mg/L. The solution has served as the discharge cathode. It has been shown that the discharge treatment leads to a decrease in the Cr(VI) concentration to its steady-state value, with the latter depending on the discharge current and the initial concentration of the solution. The effective rate constants of the forward and reverse processes have been determined, the energy efficiency of the process has been evaluated, and possible mechanisms of the reactions involved have been discussed.

The process of phenol decomposition in an aqueous solution under the action of a DC discharge of atmospheric pressure in air was studied. The decomposition efficiency was found to be 0.017 molecules per 100 eV. The oxyphenols, carboxylic acids, aldehydes and nitro phenols were the main decomposition products. The treatment process accompanies by the hydrogen peroxide formation, pH decrease and the nitric acid formation. Some other parameters of discharge were determined as well.

The kinetics of degradation of nitrophenol and buildup of its products in the liquid cathode (doubly distilled water) of atmospheric-pressure dc discharge in air have been experimentally studied. It has been shown that the main products are formaldehyde and carboxylic acids. It has been found that the discharge treatment is accompanied by the formation of nitric acid in the liquid phase. The kinetic characteristics of the nitrophenol degradation process and its energy efficiency have been determined.

The process of phenol decomposition in aqueous solution under the action of a dielectric barrier discharge in oxygen for a reactor of flow type was studied. On the base of these results the mechanism of processes was proposed the calculations on which describe date on decomposition phenol and formation-loss of products of its transformation.

The degradation kinetics of phenol and the formation kinetics of its decomposition products in the liquid cathode (distilled water) of direct-current atmospheric-pressure discharge in air have been experimentally measured. The processes occurring in the liquid phase have been simulated on the basis of the previously proposed reaction kinetics scheme complemented by phenol decomposition reactions and the formation/decay reactions of its degradation products.

The phenol degradation kinetics and the buildup kinetics of the products hydroxyphenols, nitrophenols, carboxylic acids, and formaldehyde in electrolytic-cathode direct-current discharge have been studied, as well as the formation of nitric acid. On the basis of the results, a scheme of the processes has been proposed; calculations according to this scheme describe well the experimental data on the degradation kinetics of phenol and the formation/decay kinetics of its transformation products.