Production of nanoparticles utilizing water stabilized plasma

0384337 - ÚFP 2013 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Bertolissi, Gabriele - Brožek, Vlastimil - Chráska, Tomáš - Mušálek, Radek - Neufuss, Karel - Mastný, L. - Sofer, Z.
Production of nanoparticles utilizing water stabilized plasma.
NANOCON 2012 - Conference Proceedings. Ostrava: Tanger, 2012, s. 54-59. ISBN 978-80-87294-32-1.
[NANOCON 2012. International Conference /4./. Brno (CZ), 23.10.2012-25.10.2012]
Výzkumný záměr: CEZ:AV0Z20430508
Klíčová slova: Ag, Al, Ti, V, Cr, Pt – nanoparticles * nanoparticles morphology * plasma spraying * water stabilized plasma * photon spectroscopy * metallic nanoparticles * oxide nanoparticles
Kód oboru RIV: CA - Anorganická chemie
http://www.nanocon.cz/files/proceedings/04/reports/606.pdf

Water stabilized plasma torch (WSP®) generates plasma jet with max. plasma velocity in the nozzle exit 7000m/s and temperature of 25000-30000 K. Reactants injected into the plasma jet undergo complicated radical reactions. Interaction of plasma with injected reactants depends on energy settings of the WSP plasma torch and lasts from 5 to 10 ms. Droplets of inorganic compound solution are fed to the plasma jet by pressurized spray nozzle device. Compounds of AgI,AlIII,TiIV,PtIV,VV, and CrVI undergo decomposition in the extremely high plasma temperature and the decomposed products are collected in liquid separators. Size of the produced nanoparticles in unsettled fraction is from 10 to 200 nm and depends primarily on concentration of inputting aerosol particles. In the case of 15 seconds reaction time and use of saturated solutions at 20°C, one can obtain colloidal solutions with silver, platinum, alumina, titania, vanadia, and chromia nanoparticles in concentrations of 3 to 180mg
Trvalý link: http://hdl.handle.net/11104/0214028