ISO 18473-4:2022
(Main)Functional pigments and extenders for special applications — Part 4: Nanoscale titanium dioxide for photocatalytic application
Functional pigments and extenders for special applications — Part 4: Nanoscale titanium dioxide for photocatalytic application
This document specifies requirements and corresponding test methods for nanoscale titanium dioxide (TiO2) in either powder or suspension form for photocatalytic application. This document is applicable to modified nanoscale titanium dioxide for photocatalytic application. NOTE Such modification can be surface treatment, coating, doping and combination thereof.
Pigments et matières de charge fonctionnels pour applications spéciales — Partie 4: Dioxyde de titane nanométrique pour applications photocatalytiques
Le présent document spécifie des exigences et les méthodes d’essai correspondantes pour le dioxyde de titane (TiO2) nanométrique sous forme de poudre ou de suspension, pour applications photocatalytiques. Il s'applique au dioxyde de titane (TiO2) nanométrique modifié, pour applications photocatalytiques. NOTE Cette modification peut correspondre à un traitement de surface, un revêtement, un dopage et toute combinaison de ceux-ci.
General Information
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 18473-4
First edition
2022-02
Functional pigments and extenders for
special applications —
Part 4:
Nanoscale titanium dioxide for
photocatalytic application
Reference number
ISO 18473-4:2022(E)
© ISO 2022
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ISO 18473-4:2022(E)
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© ISO 2022
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ISO 18473-4:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Classification and designation . 2
4.1 Classification . 2
4.2 Designation . 2
5 Requirements and test methods . 3
5.1 Appearance . 3
5.2 Technical requirements . 3
6 Sampling . 4
7 Marking and labelling . 4
8 Test report . 4
Bibliography . 5
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ISO 18473-4:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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electrotechnical standardization.
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described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
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on the ISO list of patent declarations received (see www.iso.org/patents).
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 256, Pigments, dyestuffs and extenders.
A list of all parts in the ISO 18473 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html
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ISO 18473-4:2022(E)
Introduction
Metal nanoparticles are promising materials as the heterogeneous catalyst in a variety of organic
transformations. Their catalytic properties are functions of their size and crystal lattice parameters,
and they show amazing levels of performance in terms of selectivity, activity and improved yield of
products. In particular, nanoscale titanium dioxide (TiO ) particles exhibited many special properties
2
because the band gap of the nanoparticles increased with the decrease in size. The use of TiO
2
nanoparticles has received considerable attention in green synthetic organic chemistry, decomposition
and removal of air and water contaminants, deodorization, and antibacterial, antifungal, self-cleaning
and antifogging actions.
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INTERNATIONAL STANDARD ISO 18473-4:2022(E)
Functional pigments and extenders for special
applications —
Part 4:
Nanoscale titanium dioxide for photocatalytic application
1 Scope
This document specifies requirements and corresponding test methods for nanoscale titanium dioxide
(TiO ) in either powder or suspension form for photocatalytic application.
2
This document is applicable to modified nanoscale titanium dioxide for photocatalytic application.
NOTE Such modification can be surface treatment, coating, doping and combination thereof.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 591-1:2000, Titanium dioxide pigments for paints — Part 1: Specifications and methods of test
ISO 787-2, General methods of test for pigments and extenders — Part 2: Determination of matter volatile
at 105 °C
ISO 787-9, General methods o
...
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