CEN/TS 16599:2014

Photocatalysis - Irradiation conditions for testing photocatalytic properties of semiconducting materials and the measurement of these conditions

This Technical Specification prescribes the conditions for irradiating photocatalytic surfaces in order to perform photocatalytic efficiency tests. In addition, the measurement and documentation of these irradiation conditions with respect to the spectral distribution, irradiance and homogeneity are given.

Photokatalyse - Bestrahlungsbedingungen zum Prüfen photokatalytischer Eigenschaften von halbleitenden Werkstoffen und die Messung dieser Bedingungen

Diese Technische Spezifikation legt die Bestrahlungsbedingungen für photokatalytische Oberflächen fest, um photokatalytische Wirksamkeitsprüfungen durchzuführen. Zusätzlich sind die Messung und Dokumentation dieser Bestrahlungsbedingungen hinsichtlich der Spektralverteilung, Bestrahlungsstärke und Homogenität festgelegt.

Photocatalyse - Détermination des conditions d’irradiation pour tester les propriétés photocatalytiques de matériaux semi-conducteurs

La présente Spécification technique prescrit les conditions d’irradiation des surfaces photocatalytiques dans le but de réaliser des essais d’efficacité photocatalytique. La détermination et la documentation de ces conditions d’irradiation, telles que la répartition spectrale, l’éclairement énergétique et l’homogénéité, sont également indiquées.

Fotokataliza - Obsevalni pogoji za preskušanje fotokatalitičnih lastnosti polprevodnih snovi in meritve teh pogojev

Standard CEN/TR 16599 predpisuje pogoje obsevanja fotokatalitičnih površin z namenom izvajanja fotokatalitičnih preskusov učinkovitosti. Poleg tega so v standardu podane meritve in dokumentacija pogojev obsevanja glede na spektralno porazdelitev, obsevanje in homogenost.

General Information

• Status: Published
• Publication Date: 25-Mar-2014
• ICS: 25.220.20 - Surface treatment
• Technical Committee: CEN/TC 386 - Photocatalysis
• Drafting Committee: CEN/TC 386/WG 6 - Light source
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 29-Mar-2018
• Ref Project: SIST-TS CEN/TS 16599:2014 - Photocatalysis - Irradiation conditions for testing photocatalytic properties of semiconducting materials and the measurement of these conditions

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2014
)RWRNDWDOL]D2EVHYDOQLSRJRML]DSUHVNXãDQMHIRWRNDWDOLWLþQLKODVWQRVWL
SROSUHYRGQLKVQRYLLQPHULWYHWHKSRJRMHY
Photocatalysis - Irradiation conditions for testing photocatalytic properties of
semiconducting materials and the measurement of these conditions
Photokatalyse - Bestrahlungsbedingungen zum Prüfen photokatalytischer Eigenschaften
von halbleitenden Werkstoffen und die Messung dieser Bedingungen
Photocatalyse - Détermination des conditions d’irradiation pour tester les propriétés
photocatalytiques de matériaux semi-conducteurs
Ta slovenski standard je istoveten z: CEN/TS 16599:2014
ICS:
25.220.20 Površinska obdelava Surface treatment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 16599
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
March 2014
ICS 25.220.20
English Version
Photocatalysis - Irradiation conditions for testing photocatalytic
properties of semiconducting materials and the measurement of
these conditions
Photocatalyse - Détermination des conditions d'irradiation Photokatalyse - Bestrahlungsbedingungen zum Prüfen
pour tester les propriétés photocatalytiques de matériaux photokatalytischer Eigenschaften von halbleitenden
semi-conducteurs Werkstoffen und die Messung dieser Bedingungen
This Technical Specification (CEN/TS) was approved by CEN on 14 October 2013 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 16599:2014 E
worldwide for CEN national Members.

Contents Page
Foreword .3
Introduction .4
1 Scope .5
2 Symbols and abbreviations .5
3 Specification of spectral areas and irradiance values .5
4 Lamp types and filters .6
4.1 Examples of different lamp types .6
4.1.1 Xenon lamps .6
4.1.2 Halogen lamps .7
4.1.3 Fluorescence lamps .7
4.1.4 Mercury vapour lamps .7
4.1.5 Light emitting diodes (LED) .8
4.1.6 Sunlight .8
4.2 Controlling of the ageing behaviour of the used lamp .8
4.3 Filters .8
4.3.1 Cut-on/Cut-off-filters for irradiation of large areas .8
4.3.2 Band-pass-filters for irradiation of small areas .8
4.3.3 Interference filters.9
5 Diffusers .9
6 Measuring systems .9
6.1 General .9
6.2 Thermopile-Sensors . 10
6.3 Calibrated Si-Photodiodes . 10
6.4 Quantum counter based on fluorescence . 11
6.5 Chemical actinometry . 11
6.6 Spectral radiometers . 11
7 Homogeneous irradiation of areas . 11
7.1 Homogeneity of intensity . 11
7.2 Number and local positions of the measurement points . 12
7.3 Position of the measurement plane . 13
8 Test report . 14
Annex A (informative) Informative examples and definitions. 15
A.1 Informative Terms and definitions . 15
A.1.1 Standard irradiation conditions . 15
A.1.2 Irradiation conditions for specific applications . 15
A.2 Examples for available cut-on-filters . 16
A.3 Examples for available band-pass-filters . 17
A.4 Examples for available light emitting diodes (LED) . 18
A.5 Example of different angle distribution of various diffusor types . 19
A.6 Examples for spectra of different fluorescence tubes. 19
Bibliography . 21

Foreword
This document (CEN/TS 16599:2014) has been prepared by Technical Committee CEN/TC 386
“Photocatalysis”, the secretariat of which is held by AFNOR.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
CEN (the European Committee for Standardization) is a European committee of national standards bodies
(CEN member bodies). The work of preparing European Standards is normally carried out through
CEN Technical Committees. Each member body interested in a subject for which a Technical Committee has
been established has the right to be represented on that committee.
European organizations, governmental and non-governmental, in liaison with CEN, also take part in the work.
The main task of Technical Committees is to prepare European Standards. Drafts adopted by the Technical
Committees are circulated to the member bodies for voting. Publication as a European Standard requires
approval by at least 71 % of the member bodies casting a vote.
Safety statement
Persons using this document should be familiar with the normal laboratory practice, if applicable. This
document cannot address all of the safety problems, if any, associated with its use. It is the responsibility of
the user to establish appropriate safety and health practices and to ensure compliance with any regulatory
conditions.
Environmental statement
It is understood that some of the material permitted in this standard may have negative environmental impact.
As technological advantages lead to better alternatives for these materials, they will be eliminated from this
standard to the extent possible.
At the end of the test, the user of the standard will take care to carry out an appropriate disposal of the
wastes, according to local regulation.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus,
Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Introduction
Photocatalysis is a very efficient advanced oxidation technique which enables the production of hydroxyl
radicals (∙OH) or perhydroxyl radicals (∙OOH), capable of partly or completely mineralising/oxidising the
majority of organic compounds. Its principle is based on the simultaneous actions of photons and of a catalytic
layer which allows degradation of molecules. The most commonly used photocatalyst is titanium dioxide
(TiO ), the latter being thermodynamically stable, non-toxic and economical. It can be used in powder form or
deposited on a substrate (glass fibre, fabrics, plates/sheets, etc.). The objective is to introduce performance
standards for photo-induced effects (including photocatalysis). These standards will mainly concern test and
analysis methods.
1 Scope
This Technical Specification prescribes the conditions for irradiating photocatalytic surfaces in order to
perform photocatalytic efficiency tests. In addition, the measurement and documentation of these irradiation
conditions with respect to the spectral distribution, irradiance and homogeneity are given.
2 Symbols and abbreviations
APD avalanche photodiode
A (λ)
decadic absorbance
CA chemical actinometry
E
irradiance
FWHM full width at half maximum
h
height difference
d
h maximum height difference
max
h
measurement plane
s
LED light emitting diode
PC-A photocatalytic amber
PC-B photocatalytic blue
PC-C photocatalytic cyan
PC-G photocatalytic green
PC-R photocatalytic red
PC-U photocatalytic ultraviolet
PC-UC photocatalytic ultraviolet C
PC-V photocatalytic violet
QP (λ) total amount of absorbed photons
abs
q ° (λ) incident photon flux
p
λ wavelength
φ (λ) quantum yield
In Annex A, further examples concerning literature, terms and definitions, quantities and figures are listed for
information.
3 Specification of spectral areas and irradiance values
As shown in Table 1, different spectral areas in combination with the specified irradiance should be used for
irradiation during photocatalytical analysis. The test procedures themselves are described in their according
standards, e.g. ISO 22197-1 [6] for the abatement of nitrogen monoxide.
Table 1 — Specification of spectral areas and irradiance values
a
Cut-off-Lim
Cut-on-Limit Irradiance
Range Abbreviation Colour Peak FWHM it
max
E < 2 %
E < 5 %
nm nm nm nm W/m
UV not
PC-UC Ultraviolet C 254 ± 5 not defined not defined not defined

defined
10,0
PC-U Ultraviolet 365 ± 5 20 345 385
(± 10 %)
VIS PC-V Violet 405 ± 5 15 370 440 9,0 (± 7 %)
PC-B Blue 450 ± 5 20 400 495 8,1 (± 5 %)
PC-C Cyan 500 ± 5 27 440 560 7,3 (± 5 %)
PC-G Green 530 ± 5 30 465 595 6,8 (± 5 %)
PC-A
Amber 590 ± 5 15 555 620 6,2 (± 5 %)
PC-R Red 630 ± 5 15 595 655 5,8 (± 5 %)
NOTE 1 For more information about the definition of UV- and VI
...