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Plasma chemistr y research at Faculty of Chemistry Brno University of Technology Franti š ek Kr č ma Zdenka Stará. Central Europe. BUT location. Central Europe. BUT location. Czech Republic, Brno. Central Europe. BUT location. Brno – north part of city. Central Europe. BUT location.

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  1. Plasma chemistry researchat Faculty of ChemistryBrno University of TechnologyFrantišek KrčmaZdenka Stará

  2. Central Europe BUT location

  3. Central Europe BUT location Czech Republic, Brno

  4. Central Europe BUT location Brno – north part of city

  5. Central Europe BUT location Brno – faculty campus

  6. BUT structure Faculty of Architecture Faculty of Chemistry Faculty of Business and Management Faculty ofCivilEngineering Faculty of Electrical Engineering and Communication Faculty of Information Technology Faculty of Mechanical Engineering Faculty of Fine Arts

  7. FCH structure IPAC Institute of Physical and Applied Chemistry IMC Institute of Material Chemistry PLASMA CHEMISTRY LABORATORY analytical methods microbiology ICTEP Institute of Chemistry and Technology of Environmental Protection IFCBT Institute of Food Chemistry and Biotechnology

  8. Plasma chemistry research fields • Deposition of organosilicone layers • Diaphragm discharge in liquids • Destruction of pollutants in atmospheric discharges • Surface treatment and sterillization • Plasma chemical removal of corrosion • Discharge and post-discharge kinetics

  9. Deposition of organosilicone layers • Tetravinylsilane and vinyltriethoxysilane monomers • Influence of deposition conditions on plasma polymer mechanical and optical properties • Study of the role of reactive bounds during the thin films preparation

  10. Deposition of organosilicone layers • System equipped with mass spectroscopy and in situ spectroscopic ellipsometry • Multilayer preparation and characterization • Application in glass based composites

  11. Deposition of organosilicone layers • main publications • Čech V., Vaněk J., Drzal L.: Deposition of Single Plasma-Polymerized Vinyltriethoxysilane Films and their Layered Structure, Jap. J. Appl. Phys. 45 (2006) 8440 • Čech V., Inagaki N., Vaněk J., Přikryl R., Burešová A., Zemek J.: Plasma-Polymerized Versus Polycondensed Thin Films of Vinyltriethoxysilane, Thin Solid Film 502 (2006)181 • Čech V.: Plasma Polymer Film as a Model Interlayer for Polymer Composites, IEEE Transactions on Plasma Science 34 (2006) 1148 • Čech V., Vaněk J., Jones F., Goruppa A.: RF-Power-Controlled Young's Modulus of Plasma-Polymerized Organosilicon Films, J. Material. Sci. 40 (2005) 5099 • Čech V., Vaněk J., Studýnka J., Přikryl R.: Plasma Polymer Films Prepared in RF Inductive Coupling System, Chem. Papers 99 (2005) S446 • Rašková Z., Brandejs K., Vaněk J., Krčma F.: Plasma Diagnostic During Deposition Processes of Silane Based Thin Films, Czech. J. Phys.54 (2004) C1036

  12. Diaphragm discharge in liquids negative streamers (negative discharge) positive streamers (positive discharge) discharge reactor Experimental conditions: High voltage: 1-3 kV Discharge current: 90-250 mA Input power: 90-300 W Solution: water + electrolyte (+ dye) Optimal solution conductivity: 100-1000 μS∙cm-1

  13. Diaphragm discharge in liquids • Investigated processes: • generation of reactive species from water • - OH, H, O and some other radicals (det. by OES) • - hydrogen peroxide (det. by colorimetric method) • excitation of metal elements from alkaline solutions (det. by OES) • degradation of organic compounds dissolved in water • - organic dyes • - humic acids • behaviour of solution properties (pH, conductivity)

  14. Diaphragm discharge in liquids • main publications • Procházková J., Stará Z., Krčma F.: Optical Emission Spectroscopy of Diaphragm Discharge in Water Solutions, Czech J. Phys.56 (2006) B1314 • Stará Z., Krčma F.: Treatment of Humic Acids Solutions by Diaphragm Discharge, Czech. J. Phys.56 (2006) B1351 • Stará Z., Krčma F.: Degradation of Organic Dyes Versus H2O2 Generation During the DC Diaphragm Discharge Treatment in Water Solutions, Acta Phys. Slovaca 55 (2005) 515 • Stará Z., Krčma F.: The Study of H2O2 Generation by DC Diaphragm Discharge in Liquids, Czech. J. Phys.54 (2004) C1050 • Stará Z., Krčma F., Nejezchleb M., Skalný J.D.: Organic Dye Decomposition by DC Diaphragm Discharge in Water: Effect of Solution Properties on Dye Removal, J. Adv. Oxid. Technol. (2007), submitted • Stará Z., Krčma F., Slavíček P.: Creation and Stability of DC Diaphragm Discharge Generated in Water Solutions of Electrolytes and Organic Dyes, J. Electrost. (2007), recieved

  15. Destruction of pollutants in atmospheric discharges Experimental devices • Gliding arc discharge • Surface barrier discharge

  16. Destruction of pollutants in atmospheric discharges • High-speed video camera measurements • Cycle duration, plasma channel length • Destruction products analysis • Solid Phase Microextraction • (SPME)+ GC-MS • TESTO 350 – simply gas analyser • Optical measurements - OES

  17. Destruction of pollutants in atmospheric discharges • main publications • Grossmannová H., Cigánek M., Krčma F.: High-Molecular Products Analysis of VOC Destruction in Atmospheric Pressure Discharge, J.Phys.: Conf. Ser. 63 (2007) Article No. 012011 • Grossmannová H., Krčma F.: The Applicability of the Solid Phase Microextraction Technique for the Analysis of the Gliding Arc Discharge Products, Chem. Papers 99 (2005) S137 • Grossmannová H., Vrajová J., Krčma F.: VOC Destruction in Atmospheric Pressure Discharges – Analysis of the Low Molecular Products, Proceedings of ISPC XVIII, Abstract 752, full 27P-170, Kjoto 2007. • Grossmannová H., Krčma F.: VOC Abatement in Gliding arc Discharge – Low Molecular Products Analysis, Proceedings of Frontiers in Low Temperature Plasma Diagnostics VII, full text 4 pages on CD, Beverley 2007

  18. Surface treatment and sterilization DBD surface discharge Hydrofility/hydrophobity Plasma reactor UPS 100W • - Material: Paper, PE, PES • Experimental conditions: • Atmospheric pressure • Plasma power input 130 – 190 W • Air • Treatment time 0 – 60 s • - Surface energy evaluation, Absorption, Spectrofotometer

  19. B C A Surface treatment and sterilization DBD volume discharge Sterilization Faculty of Science, Masaryk University • Bioindicator – fungi Aspergillus Niger • Experimental conditions: • Atmospheric pressure • Plasma power input 93 - 1080 mWcm-3 • Nitrogen, Argon, Helium • Treatment time 0 – 240 s

  20. Surface treatment and sterilization • main publications • Janča J., Sťahel P., Buchta J., Subedi D., Krčma F., Pryčková J.: APlasma Surface Treatment of Polyester Textile Fibers Used for Reainforcement of Car Tires, Polymers and Plasmas 6 (2001) 15 • Vrajová J., Sťahel P., Novotný O., Buršíková V., Krčma F., Čech J.: Plasma Based Removal of Microbial Contamination of Paper, Proc. 8thInternat. Balkan Workshop on Appl. Phys., Constanca 2007 • Vrajová J., Prudíková I., Rašková Z., Krčma F.: Plasma Based Removal of Microbial Contamination of Paper, Proceedings of ISPC XVIII, Abstract 689, full 27P-121 (4 pages) on CD, Kjoto 2007 • Čechová E., Klučáková M., Krčma F., Majzlík P., Vrajová J.: Interaction of Humic Acids Thin Layers with Plasma at Atmospheric Pressure, Proceedings of ISPC XVIII, Abstract 745, full 27P-163 (4 pages) on CD, Kjoto 2007. • Vrajová J., Rašková Z., Prudíková I., Krčma F.: Utilization of Atmospheric Pressure Discharges for Paper Sterilization, Proceedings of 16th Symposium on Application of Plasma Processes, 277-278, Podbanské 2007

  21. Plasma chemical removal of corrosion • Method is known for about 20 year but there is only a very limited knowledge about the mechanisms • Empirically it is used mainly for iron and silver made objects

  22. Plasma chemical removal of corrosion • Application on laboratory prepared samples with defined process of corrosion layer preparation • Use for iron, copper, bronze and brass samples with defined surface raphness • Analyse of the plasma during the process and all acessible analyses of sample surface during whole process

  23. Plasma chemical removal of corrosion • main publications • Rašková Z., Krčma, F.: Plasmachemical Reduction for the Conservation of Archaeological Artefacts, Publ. of Astronom. Observ. Belgrade 82 (2007) 159 • Krčma F., Cihlář M., Klíma M.: Diagnostic of Plasmachemical Removal of Copper Based Corrosion Layers, Chem. Papers 99 (2005) S583 • Rašková Z., Krčma F., Klíma M., Kousal J.: Spectroscopy of Low Pressure Discharges Used for Plasmachemical Treatment of Archaeological Artifacts, Chem. Papers 96 (2002) S101 • Rašková Z., Krčma F., Klíma M., Kousal J.: Characterisation of Plasmachemical Treatment of Archaelogical Artifacts, Czech. J. Phys. 52 (2002) D927

  24. Discharge and post-discharge kineticsexperimental • flowing post-discharge in pure nitrogen and in nitrogen mixtures with oxygen, argon and hydrogen • influence of hydrocarbon and metallic traces on nitrogen post-discharge • fragmentation of organosilicone molecules in plasmas

  25. Discharge and post-discharge kineticstheoretical • study of v-t and v-v processes in nitrogen post-discharge • creation of nitrogen molecular ions during the post-discharge • pooling reactions in pure nitrogen • energy transfer reactions between near laying levels • energy transfer between different molecular species, mainly from nitrogen metastables to other particles • estimation of reaction rates • formation of organosilicone structures in plasma-gas phase • pulsed discharges as combination of ac active discharge with its afterglow

  26. Discharge and post-discharge kinetics • main publications • Krčma F., Protasevich E. T.: Post-discharges in Pure Nitrogen and in Nitrogen Containing Halogenated Hydrocarbon Traces, Tomsk Polytechnic University Publishing, Tomsk 2003, pages 1 – 132, ISBN 189-8326-444. • Krčma F., Mazánková V., Soural I.: Short Live Afterglow in Pure Nitrogen and Nitrogen Containing Traces of Methane and Oxygen, Publ. Astronom. Observ. Belgrade 82 (2007) 133 • Kanický V., Otruba V., Hrdlička A., Krásenský P., Krčma F.: Influence of Metal Traces on Kinetics of a Nitrogen Glow Discharge in Post-Discharge Period, J. Atom. Analyt. Spectrom. 22 (2007) 754 • Krčma F., Mazánková V., Soural I.: Secondary "Pink Afterglow" in Post-Discharge in Pure Nitrogen, Czech. J. Phys. 56 (2006) B871 • Krčma F.: Pink Afterglow in Nitrogen - Hydrocarbon Mixtures, Acta Phys. Slovaca 55 (2005) 453 • Hubeňák J., Krčma F.: Determination of Hydrocarbon Concentration in the N2 DC Flowing Afterglow, J. Phys. D: Appl. Phys. 33 (2000) 3121

  27. Practical course from plasma chemical processes and technologies • Low pressure measuring • EPR spectroscopy of plasma • RF discharge at low pressure • Optical emission spectroscopy of plasma • VOC destruction in atmospheric pressure plasma • Hydrogen peroxide generation by diaphragm discharge in liquids • Organic dyes degradation by diaphragm discharge in liquids • Study of ozone generation • Changes of polymer materials wettability by surface discharge • Permeability enhancement of non-wowen textile materials

  28. International collaboration • University Marne la Vallee, Paris region, France • Belgrade University, Serbia • Instituto Superior Tecnico de Lisboa, Portugal • Ecole Nationale Superiere du Chimie de Paris, France • Faculty of Mathematics, Physics and Informatics, Comenius Univesrity Bratislava, Slovakia • Physical Institut, Zemun, Serbia

  29. National collaboration • Faculty of Science, Masaryk University Brno • Technical Museum, Brno • Faculty of Mathematics and Physics, Charles University, Prague • Institut of Plasma Physics, Czech Academy of Science, Prague • Physical Institute, Czech Academy of Science, Prague • Faculty of Electrical Engineering, Czech Technical University, Prague • HVM Plasma, Ltd, Prague • Romill, Ltd, Brno • Vacuum Praha, Ltd, Prague • Zlín Precission, Ltd, Zlín

  30. Actual projects • Study of Kinetic Processes in Nitrogen Post-Discharge with Respect to their Use in Chemical Analysis, Czech Science Foundation 202/05/0111 (2005-2007)–Krčma. • Advanced Topics in Physics and Chemistry of Plasmas, Czech Science Foundation 202/03/H162 (2003-2007)–Krčma. • Study of Processes in Electrical Discharges in Water Solutions of Organic Compounds, Czech Science Foundation 202/07/P371 (2007-2009) – Stará. • Theoretic and Spectroscopic Study of Organosilicone Molecules and Their Fragmentation, Barrande 2-07-27 (2007-2008) – Krčma. • Research of Plasma Chemical Processes for Development of Inteligent polymeric Nanostructures, Czech Science Foundation 104/06/0437 (2006-2008) – Čech. • Structuring of plasma polymers, 1P05OC087 (2004-2007) – Čech. • Participation at Research plan Multifunctional Heterogeneous Materials based on Synthetic Polymers and Biopolymers, Ministry of Education, Youth and Sport MSM 0021630501 (2005-2009).

  31. Main closed projects • Surface Activation of Synthetic Polymer Materials in Non-Isothermic Low Temperature Plasma, Czech Science Foundation 104/99/0307 (1999-2001) – Krčma. • Study of the Processes in Post-discharge Plasma Created in Pure Nitrogen with Chloro- and Fluoro-Carbons and Their Application in Determination of the Plastic Materials Degradation, Czech Science Foundation 202/98/P258 (1998-2001) – Krčma. • Plasma Surface Treatment of glass Fibers for Polymeric Composites, Czech Science Foundation 104/00/0708 (2000-2002) – Čech. • Functional Nanostructures for Composite Interfaces, ME 597 (2002-2006) – Čech. • Plasma Polymer Films Prepared in RF Inductive Coupling System, OC 527.110 (2001-2005) – Čech. • 12 project of Czech Ministry of Education, Youth and Sports in program Development of Universities.

  32. IPAC IMC Scientific staff Assoc. Prof. František Krčma, Ph.D. Assoc. Prof. Ota Salyk, CSc. Dr. Zdenka Stará, Ph.D. Prof. Vladimír Čech, Ph.D. Dr. Radek Přikryl, Ph.D. Students Bc 4 Mgr. 12 Ph.D. 6 Bc 2 Mgr. 3 Ph.D. 2 Finished students Bc 3 Mgr. 18 Ph.D. 3 Bc 1 Mgr. 4 Ph.D. 2

  33. Publications - overview

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