ISO 18473-4:2022 PDF

Functional pigments and extenders for special applications — Part 4: Nanoscale titanium dioxide for photocatalytic application

Название (английский):

ISO 18473-4:2022

Functional pigments and extenders for special applications — Part 4: Nanoscale titanium dioxide for photocatalytic application

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 5
Дата публикации:: 28 февраля 2022 г.
Издание:: ISO IS 18473 edition 1 version 1
ICS:: 87.060.10

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Описание (английский):

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.

Технические детали

Технический комитет: ISO/TC 256 - Pigments, dyestuffs and extenders
SKU: ISO 18473-4:2022

Abstract

Overview

ISO 18473-4:2022 specifies requirements and test methods for nanoscale titanium dioxide (TiO2) supplied as powder or suspension for photocatalytic applications. Part of the ISO 18473 series on functional pigments and extenders, this standard covers modified nano‑TiO2 (e.g., surface treatment, coating, doping) and defines classification, sampling, marking, test reporting and essential technical limits to ensure consistent performance in photocatalysis.

Key topics and technical requirements

The standard focuses on characterization and conformity testing for photocatalyst TiO2 nanoparticles. Major technical items include:

Classification and designation
- Crystal structure: anatase or mainly anatase with low rutile content.
- Designation may include the median primary particle size (d50).
Appearance
- Powder: white or yellowy‑white (yellow possible with certain dopants).
Essential requirements (examples from Table 1)
- Median primary particle size (d50): ≤ 100 nm (reported by TEM or suitable method).
- Specific surface area (BET): ≥ 35 m²/g (ISO 9277).
- Residue on 45 µm sieve:

Overview

Key topics and technical requirements

The standard focuses on characterization and conformity testing for photocatalyst TiO2 nanoparticles. Major technical items include:

Classification and designation
- Crystal structure: anatase or mainly anatase with low rutile content.
- Designation may include the median primary particle size (d50).
Appearance
- Powder: white or yellowy‑white (yellow possible with certain dopants).
Essential requirements (examples from Table 1)
- Median primary particle size (d50): ≤ 100 nm (reported by TEM or suitable method).
- Specific surface area (BET): ≥ 35 m²/g (ISO 9277).
- Residue on 45 µm sieve:

ISO 18473-4:2022 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

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Abstract

Overview

Key topics and technical requirements

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