Characteristics of Bipolar Nanosecond Discharges in Air Formed in the Electrode System “BLADE-SURFACE of Nonmetallic Liquid -BLADE”

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.

SYNTHESIS OF La@C2n BY DIRECT La-FULLERENE REACTIONS IN THE LASER-ABLATION PLASMA OF A La2O3/FULLERENE MIXTURE

Reaction of excimer laser (XeCl, 308 nm) vaporized and excited fullerenes with La was carried out in a mixture of fullerenes and La 2 O 3. The reaction products La@C 60, La @60−2n, and La@C 60+2m were identified by a reflectron-type time-of-flight mass spectrometer (RTOFMS). The endohedral nature of these metallofullerenes is discussed in terms of a “window” mechanism. As an initial effort, a macroscopic amount of La@C 2n was also collected by this method and confirmed by laser-desorption time-of-flight mass analysis.