Abstract
Curcumin The design of the device for producing a high-current, bipolar nanosecond discharge over the surface of a non-metallic liquid (water, electrolytes, alcohols, etc.) in air is given. Air pressure is ranged from 5 to 101 kPa. The distance between the tip of the blade and the surface of water or liquid (5% solution of copper sulfate in distilled water) was 4 mm, and the distance between parallel metal blades was 40 mm. The conditions for uniform plasma overlapping of the electrolyte surface between the metal blades are established. The spatial, electrical, and optical characteristics of the discharge are investigated. It is shown that the discharge under study allows obtaining colloidal solutions of copper nanoparticles in distilled water in a macroscopic amount (1 liter or more). The developed reactor is of interest for use in poisonous chemical solution disinfection systems, solutions based on dangerous bacteria and viruses for which the use of traditional systems with a point spark discharge or a barrier discharge becomes ineffective. The rector is also promising for the synthesis of colloidal solutions of transition metal oxide nanoparticles from solutions of the corresponding salts. These solutions can be used in micro-nanotechnology and for antibacterial treatment of plants in greenhouses, processing of medical instruments and materials.
Highlights
Intensive use of various gas-discharge sources of ultraviolet (UV)radiation in medicine, microbiology, chemistry, sanitation and ecology has been observed [1,2,3,4,5,6,7,8,9]
Curcumin The design of the device for producing a high-current, bipolar nanosecond discharge over the surface of a non-metallic liquid in air is given
It is shown that the discharge under study allows obtaining colloidal solutions of copper nanoparticles in distilled water in a macroscopic amount (1 liter or more)
Summary
Radiation in medicine, microbiology, chemistry, sanitation and ecology has been observed [1,2,3,4,5,6,7,8,9] Promising for these purposes is the use of “cold” plasma jets, which are formed mainly in different gas-discharge devices [10]. When using such UV emitters, including open ones, operating in atmospheric air and not having a quartz shell, for the action of biologically or chemically active solutions on the surface, the distance between the lamp and the liquid is several centimeters.
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