Presentation is loading. Please wait.

Presentation is loading. Please wait.

Plasma chemistry research at Faculty of Chemistry Brno University of Technology František Krčma Zdenka Stará.

Similar presentations

Presentation on theme: "Plasma chemistry research at Faculty of Chemistry Brno University of Technology František Krčma Zdenka Stará."— Presentation transcript:

1 Plasma chemistry research at Faculty of Chemistry Brno University of Technology František Krčma Zdenka Stará

2 BUT location Central Europe

3 BUT location Central Europe Czech Republic, Brno

4 BUT location Central Europe Brno – north part of city

5 BUT location Central Europe Brno – faculty campus

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

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

8 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 Plasma chemistry research fields

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 H 2 O 2 Generation During the DC Diaphragm Discharge Treatment in Water Solutions, Acta Phys. Slovaca 55 (2005) 515 Stará Z., Krčma F.: The Study of H 2 O 2 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 Gliding arc discharge Surface barrier discharge Destruction of pollutants in atmospheric discharges Experimental devices

16 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 Destruction of pollutants in atmospheric discharges

17 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 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 Hydrofility/hydrophobity

19 Surface treatment and sterilization B C A DBD volume discharge 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 Sterilization

20 Surface treatment and sterilization main publications Janča J., Sťahel P., Buchta J., Subedi D., Krčma F., Pryčková J.: A Plasma 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. 8 th Internat. 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 kinetics experimental 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 kinetics theoretical 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 N 2 DC Flowing Afterglow, J. Phys. D: Appl. Phys. 33 (2000) 3121

27 Practical course from plasma chemical processes and technologies 1.Low pressure measuring 2.EPR spectroscopy of plasma 3.RF discharge at low pressure 4.Optical emission spectroscopy of plasma 5.VOC destruction in atmospheric pressure plasma 6.Hydrogen peroxide generation by diaphragm discharge in liquids 7.Organic dyes degradation by diaphragm discharge in liquids 8.Study of ozone generation 9.Changes of polymer materials wettability by surface discharge 10. 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 Scientific staff Students Finished students 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. Bc 4 Mgr. 12 Ph.D. 6 Bc 2 Mgr. 3 Ph.D. 2 Bc 3 Mgr. 18 Ph.D. 3 Bc 1 Mgr. 4 Ph.D. 2 IPACIMC

33 Publications - overview

Download ppt "Plasma chemistry research at Faculty of Chemistry Brno University of Technology František Krčma Zdenka Stará."

Similar presentations

Ads by Google