Plasma chemistry research at Faculty of Chemistry Brno University of Technology Franti

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Plasma chemistry researchat Faculty of
ChemistryBrno University of TechnologyFrantišek
KrcmaZdenka Stará
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BUT location

                                
Central Europe
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BUT location

                                
Central Europe
Czech Republic, Brno
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BUT location

                                
Central Europe
Brno north part of city
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BUT location

                                
Central Europe
Brno faculty campus
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BUT structure
Faculty of Architecture
Faculty of Chemistry
Faculty of Business and Management
Faculty of CivilEngineering
Faculty of Electrical Engineering and
Communication
Faculty of Information Technology
Faculty of Mechanical Engineering
Faculty of Fine Arts
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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
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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

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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

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Deposition of organosilicone layers

• System equipped with mass spectroscopy and in
  situ spectroscopic ellipsometry
• Multilayer preparation and characterization
• Application in glass based composites

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Deposition of organosilicone layers

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

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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
µScm-1
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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)

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Diaphragm discharge in liquids

• main publications
• Procházková J., Stará Z., Krcma F. Optical
  Emission Spectroscopy of Diaphragm Discharge in
  Water Solutions, Czech J. Phys. 56 (2006) B1314
• Stará Z., Krcma F. Treatment of Humic Acids
  Solutions by Diaphragm Discharge, Czech. J. Phys.
  56 (2006) B1351
• Stará Z., Krcma 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., Krcma F. The Study of H2O2 Generation
  by DC Diaphragm Discharge in Liquids, Czech. J.
  Phys. 54 (2004) C1050
• Stará Z., Krcma 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., Krcma F., Slavícek P. Creation and
  Stability of DC Diaphragm Discharge Generated in
  Water Solutions of Electrolytes and Organic Dyes,
  J. Electrost. (2007), recieved

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Destruction of pollutants in atmospheric
discharges
Experimental devices

• Gliding arc discharge
• Surface barrier discharge

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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

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Destruction of pollutants in atmospheric
discharges

• main publications
• Grossmannová H., Cigánek M., Krcma F.
  High-Molecular Products Analysis of VOC
  Destruction in Atmospheric Pressure Discharge,
  J. Phys. Conf. Ser. 63 (2007) Article No. 012011
• Grossmannová H., Krcma 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., Krcma 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., Krcma 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

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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

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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

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Surface treatment and sterilization

• main publications
• Janca J., Stahel P., Buchta J., Subedi D., Krcma
  F., Prycková J. A Plasma Surface Treatment of
  Polyester Textile Fibers Used for Reainforcement
  of Car Tires, Polymers and Plasmas 6 (2001) 15
• Vrajová J., Stahel P., Novotný O., Buršíková V.,
  Krcma F., Cech J. Plasma Based Removal of
  Microbial Contamination of Paper, Proc.
  8th Internat. Balkan Workshop on Appl. Phys.,
  Constanca 2007
• Vrajová J., Prudíková I., Rašková Z., Krcma F.
  Plasma Based Removal of Microbial Contamination
  of Paper, Proceedings of ISPC XVIII, Abstract
  689, full 27P-121 (4 pages) on CD, Kjoto 2007
• Cechová E., Klucáková M., Krcma 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., Krcma F.
  Utilization of Atmospheric Pressure Discharges
  for Paper Sterilization, Proceedings of 16th
  Symposium on Application of Plasma Processes,
  277-278, Podbanské 2007

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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

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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

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Plasma chemical removal of corrosion

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

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Discharge and post-discharge kineticsexperimenta
l

• 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

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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

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Discharge and post-discharge kinetics

• main publications
• Krcma 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.
• Krcma 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., Hrdlicka A., Krásenský P.,
  Krcma F. Influence of Metal Traces on Kinetics
  of a Nitrogen Glow Discharge in Post-Discharge
  Period, J. Atom. Analyt. Spectrom. 22 (2007) 754
• Krcma F., Mazánková V., Soural I. Secondary
  "Pink Afterglow" in Post-Discharge in Pure
  Nitrogen, Czech. J. Phys. 56 (2006) B871
• Krcma F. Pink Afterglow in Nitrogen -
  Hydrocarbon Mixtures, Acta Phys. Slovaca 55
  (2005) 453
• Hubenák J., Krcma F. Determination of
  Hydrocarbon Concentration in the N2 DC Flowing
  Afterglow, J. Phys. D Appl. Phys. 33 (2000) 3121

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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

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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

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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

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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) Krcma.
• Advanced Topics in Physics and Chemistry of
  Plasmas, Czech Science Foundation 202/03/H162
  (2003-2007) Krcma.
• 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) Krcma.
• Research of Plasma Chemical Processes for
  Development of Inteligent polymeric
  Nanostructures, Czech Science Foundation
  104/06/0437 (2006-2008) Cech.
• Structuring of plasma polymers, 1P05OC087
  (2004-2007) Cech.
• Participation at Research plan Multifunctional
  Heterogeneous Materials based on Synthetic
  Polymers and Biopolymers, Ministry of Education,
  Youth and Sport MSM 0021630501 (2005-2009).

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Main closed projects

• Surface Activation of Synthetic Polymer Materials
  in Non-Isothermic Low Temperature Plasma, Czech
  Science Foundation 104/99/0307 (1999-2001)
  Krcma.
• 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) Krcma.
• Plasma Surface Treatment of glass Fibers for
  Polymeric Composites, Czech Science Foundation
  104/00/0708 (2000-2002) Cech.
• Functional Nanostructures for Composite
  Interfaces, ME 597 (2002-2006) Cech.
• Plasma Polymer Films Prepared in RF Inductive
  Coupling System, OC 527.110 (2001-2005) Cech.
• 12 project of Czech Ministry of Education, Youth
  and Sports in program Development of Universities.

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IPAC
IMC
Scientific staff
Assoc. Prof. František Krcma, Ph.D. Assoc. Prof.
Ota Salyk, CSc. Dr. Zdenka Stará, Ph.D.
Prof. Vladimír Cech, Ph.D. Dr. Radek Prikryl,
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
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Publications - overview