The document provides an overview of photocatalysis and photocatalytic materials. It discusses the definition and mechanism of photocatalysis using titanium dioxide as an example. It then summarizes the properties and applications of specific photocatalytic materials KRONOClean 7050 and KRONOClean 7000. The document also reviews measurement methods, standards, and organizations involved in photocatalysis research and development.

1. Sirris-Workshop
Smart Coating Application
Lab
May, 19th 2011
Diepenbeek/B

2. Overview
Clean
Clean
2 Dr. Stephan Blöß, GMPS Sirris-Workshop; Diepenbeek/B 19.05.2011

4. Definition of Photocatalysis
PHOTO CATALYSIS
Greek: photos = Light Greek: katalysis = Abolishment
a compound which changes the
Radiation = parameters of a chemical reaction
Part of the electromagnetic spectra = (starting energy) without being
wasted during this reaction
Form of Energy
=> Works as a kind of docking
Ultra-violet radiation (< 380 nm) station for reactions and can be
Visible light (380 740 nm) used infinite times
Infrared radiation (> 740 nm)
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5. (UV)-Photocatalysts KRONOClean 7050
O2
IR CO2
HO2 H2O
UV
Vis
HO
Pollutant
H2O
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6. (UV)-Photocatalysts KRONOClean 7050
IR
Vis
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7. Clean

8. KRONOClean 7000 - a Carbon-doped TiO2
CB Material Band Cut-off
Eg(C) Gap Wavelength
Eg(A)
(eV) (nm)
VB
Anatase (Eg(A)) 3.20 388
Rutile (Eg(R)) 3.00 413
C-doped
2.32 535
Anatase (Eg(C))
8 Dr. Stephan Blöß, GMPS Sirris-Workshop; Diepenbeek/B 19.05.2011

9. (UV+Vis)-Photocatalysts KRONOClean 7000
O2
IR CO2
HO2 H2O
UV
Vis
HO
Pollutant
H2O
9 Dr. Stephan Blöß, GMPS Sirris-Workshop; Diepenbeek/B 19.05.2011

10. (UV+Vis)-Photocatalysts KRONOClean 7000
O2
IR CO2
HO2 H2O
Vis
HO
Pollutant
H2O
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11. Basic Properties of KRONOClean 7000
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12. Clean

13. Solid or Liquid Form of KRONOClean 7000
Transparency
Dispersing Time
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14. Indoor Application Degradation of Smoke
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15. Outdoor Application Activation Period
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16. Degradation of NOx and Soiling
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18. Measurement Setup
Side-View Top-View
Light-Source
Light-Source
Glass-Plate
Sample
Support
Gas-Flow
comparable to JIS R 1701-1:2004; ISO 22197-1
gas flow rate of 3L/min
accumulated with 1ppm NO
Light-Source: 1mW/m² UV(A) or 1700 Lux Vis
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19. NO-Degradation during Irradiation
KRONOClean 7050 KRONOClean 7000
UV
Irradiation time [s] Irradiation time [s]
Vis
Irradiation time [s] Irradiation time [s]
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20. Standardized Measurements
ISO 22197-1:2007 Test method for air-purification Removal of nitrogen oxide
ISO 22197-2:2011 Test method for air-purification Removal of acetaldehyde
ISO/TC 206/WG 37
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21. History of DIN-TC Photocatalysis
NA 062-02-93 AA (Part of NMP)
Constituted in May 2004 with 8 Members
15. Meeting in March 2011 with 16 Members
Ad-hoc Group 1 (Terminologie Terminology)
AK 2 (Gasreinigung Air Purification) 4 Meetings
AK 3 (Wasserreinigung Water Purification) 4 Meetings
AK 4 (Selbstreinigung Self Cleaning) 4 Meetings
AK 6 (Lichtquellen Light Sources) 7 Meetings
Ad-hoc Group 2 (biologische Fragestellungen Microbial Effects)
Next Meeting: 18.-19.10.2011 Berlin
18.-
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22. History of CEN-TC Photocatalysis
CEN TC 386
Constituted in November 2008 with 12 Members
3. Meeting in June 2010 with 16 Members
WG 1 (Terminology) 1 Meeting
WG 2 (Air cleaning) 6 Meetings
WG 3 (Water treatmant)
WG 4 (Self cleaning) 3 Meetings
WG 6 (Light sources) 4 Meetings
WG 7 (New Technologies) 2 Meetings
Next Meetings: 27.-29.06.2011 Berlin
27.-
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23. Published ISO-Standards
ISO 22197-1:2007 Test method for air-purification performance of semiconducting
photocatalytic materials - Part 1: removal of nitric oxide
ISO 27447:2009 Test method for antibacterial activity of semiconducting photocatalytic
materials
ISO 27448:2009 Test method for self-cleaning performance of semiconducting
photocatalytic materials - Measurement of water contact angle
ISO 10676:2010 Test method for water purification performance of semiconducting
photocatalytic materials by measurement of forming ability of active oxygen
ISO 10678:2010 Determination of photocatalytic activity of surfaces in an aqueous
medium by degradation of methylene blue
DIN 52980:2008 Bestimmung der photokatalytischen Aktivität durch
Abbau von Methylenblau
ISO 22197-2:2011 Fine ceramics (advanced ceramics, advanced technical ceramics) -
Test method for air-purification performance of semiconducting photocatalytic
materials - Part 2: Removal of acetaldehyde
ISO 22197-3:2011 Fine ceramics (advanced ceramics, advanced technical ceramics) -
Test method for air-purification performance of semiconducting photocatalytic
materials - Part 3: Removal of toluene
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24. ISO-Standards in Preparation
ISO/FDIS 10677 Fine ceramics (advanced ceramics, advanced technical ceramics) -
Ultraviolet light source for testing semiconducting photocatalytic materials
ISO/CD 22197-4 Fine ceramics (advanced ceramics, advanced technical ceramics) -
Test method for air-purification performance of semiconducting photocatalytic
materials - Part 4: Removal of formaldehyde
ISO/CD 22197-5 Fine ceramics (advanced ceramics, advanced technical ceramics) -
Test method for air-purification performance of semiconducting photocatalytic
materials - Part 5: Removal of methyl mercaptan
ISO/CD 13125 Fine ceramics (advanced ceramics, advanced technical ceramics) - Test
method for antifungal activity of semiconducting photocatalytic materials
ISO/CD14605 Fine ceramics (advanced ceramics, advanced technical ceramics) - Visible
light source for testing semiconducting photocatalytic materials
NWIP Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method
for air-purification performance of semiconducting photocatalytic materials - Part 6:
Removal of formaldehyde under indoor lighting condition by test chamber method
NWIP Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method
for antibacterial activiy of
semiconducting photocatalytic materials under indoor lighting environment
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26. Federations on Photocatalysis
German Federation for applied Photocatalysis
founded in 2011
Fédération Française de la Photocatalyse
founded in 2006
European Photocatalysis Federation
founded in 2009
European-Japanese Initiative on Photocatalysis
Application and Commercialization
founded in 2004
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27. EPF - EUROPEAN PHOTOCATALYS FEDERATION
IS
BE INVOLVED IN TOMORROW SMARKET DEVELOPMENTS
FOR YOU, OUR MAIN OBJECTIVES ARE : Since 2006
Identification of all Players in the Field of Photocatalysis
Inventory of Photocatalysis - related Trades
Calling all the available Talents (Manufacturers, Engineers, Scientists, Environment Professionals or
Users ) and pursue Photocatalysis Development together
Definition and draw up of a Professional Code
Contribution to Standards and Tests of Photocatalytic Systems
Representation of the Interests of Members at an International Level,
Publication of White Papers on Specific Questions,
Relations with other Organizations for the Development of Photocatalysis,
Support of Key Research Projects for Development of Photocatalysis
contact@efp-fep.com
Dr. Stephan JEP : Bordeaux 28th - 29th September
Pencil next Blöß, GMPS Sirris-Workshop; Diepenbeek/B 2011 19.05.2011www.efp-fep.com