Decomposition of Bromocresol Green Using a Nonthermal Atmospheric Pressure Plasma Jet

This research study aims to decompose bromocresol green (C21H14Br4O5S) using direct irradiation of a nonthermal atmospheric pressure plasma jet. The absorbance spectra of the bromocresol green solution were measured, as was its electrical conductivity and its pH before and after different durations of irradiation. The results showed that the lengths of conjugated systems in the molecular structure of bromocresol green decreased, and the bromocresol green solution was decolorized as a result of the decomposition of bromocresol green. This result indicates that cold atmospheric pressure plasma jet irradiation is capable of decomposing and can also be used for water purification

Fabrication and Characterization of Silicon Oxynitride Thin Films

In this paper we report fabrication and characterization of silicon oxynitride thin films. Thin films have been deposited by means of DC magnetron sputtering system, by use of pure silicon 99.99%. All of the deposition parameters were constant except value of oxygen (as the active gas) and argon (as the inert gas). Four samples have been deposited with different values of gases. Finding a relation between the value of used gases and thin films properties has been investigated. Spectrophotometry and atomic force microscopy have been used to do so

Degradation of bromophenol blue molecule during argon plasma jet irradiation

The aim of this paper is to study degradation of a bromophenol blue molecule (C19H10Br4O5S) using direct irradiation of cold atmospheric argon plasma jet. The pH of the bromophenol blue solution has been measured as well as its absorbance spectra and conductivity before and after the irradiation of non-thermal plasma jet in various time durations.The results indicated that the lengths of conjugated systems in the molecular structure of bromophenol blue decreased, and that the bromophenol blue solution was decolorized as a result of the decomposition of bromophenol blue. This result shows that non-thermal plasma jet irradiation is capable of decomposing, and can also be used for water purification

Effect of the Non-Thermal Argon Plasma Irradiation on Decolorization of Methyl Orange Solution

The aim of this paper is decolorization of a Methyl orange solution using an atmospheric pressure Argon plasma jet. When the plasma jet was directly irradiated onto a Methyl orange solution, the solution was decolorized. PH and absorbance of samples were measured before and after irradiation with various durations. Thus, non-thermal plasma jet irradiation is considered to be capable of decomposing, and can also be used for water purification

The Effect of Argon/Nitrogen Plasma Jet Irradiation on Optical Properties of Distilled Water

In this work the effect of atmospheric-pressure plasma jet irradiation on some properties of distilled water has been studied. Argon and nitrogen were used as the applied gasses in two similar experiments. The distilled water was irradiated by a cold argon/nitrogen plasma jet. The electrical conductivity, pH, and the absorbance of samples were measured before and after the irradiation of non-thermal plasma jet in various time durations. When the plasma jet was irradiated onto the samples, an absorbance spectral peak was observed at approximately 200 nm for both applied gasses. The absorbance of both samples increased with increasing the irradiation time, but the peak did not move in the spectral range. The electrical conductivity of distilled water increased with increasing the irradiation time for both gasses. The pH of distilled water decreased with increasing argon and nitrogen irradiation time. Also an increase in the absorbance was observed after each irradiation time interval for both applied gasses

An Experimental Study on Some Properties of Distilled Water after Irradiating the Argon Atmospheric-Pressure Plasma Jet

In this work the effect of the Argon atmospheric-pressure plasma jet irradiation on some properties of distilled water is studied. The distilled water was irradiated by a cold Argon plasma jet. The electrical conductivity, PH, and the absorbance of samples were measured before and after irradiation with various durations. The electrical conductivity of distilled water was increased with irradiation time, but its PH was decreased. An increase in the absorbance was observed after each irradiation time interval