ISO/TS 10868:2017 PDF

Name: ISO/TS 10868:2017 — Nanotechnologies — Characterization of single-wall carbon nanotubes using ultraviolet-visible-near infrared (UV-Vis-NIR) absorption spectroscopy
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Nanotechnologies — Characterization of single-wall carbon nanotubes using ultraviolet-visible-near infrared (UV-Vis-NIR) absorption spectroscopy

Название (английский):

ISO/TS 10868:2017

Nanotechnologies — Characterization of single-wall carbon nanotubes using ultraviolet-visible-near infrared (UV-Vis-NIR) absorption spectroscopy

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 19
Дата публикации:: 9 мая 2017 г.
Издание:: ISO TS 10868 edition 2 version 1
ICS:: 07.030

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Описание (английский):

ISO/TS 10868:2017 provides guidelines for the characterization of compounds containing single-wall carbon nanotubes (SWCNTs) by using optical absorption spectroscopy. The aim of this document is to describe a measurement method to characterize the diameter, the purity, and the ratio of metallic SWCNTs to the total SWCNT content in the sample. The analysis of the nanotube diameter is applicable for the diameter range from 1 nm to 2 nm.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO/TS 10868:2017 - Nanotechnologies - Characterization of single-wall carbon nanotubes using ultraviolet-visible–near infrared (UV‑Vis‑NIR) absorption spectroscopy - provides practical guidelines for using optical absorption spectroscopy to characterize compounds containing single‑wall carbon nanotubes (SWCNTs). The Technical Specification defines a measurement method to estimate mean SWCNT diameter (applicable from 1 nm to 2 nm), an optically defined purity indicator, and an optically derived ratio of metallic SWCNTs to total SWCNT content.

Key Topics

Measurement principle: Uses UV‑Vis‑NIR absorption spectra and absorbance (−log(I/I0)) to identify interband optical transitions (van Hove singularity peaks) specific to SWCNTs.

Spectral features: Identification of S11, S22 (semiconducting) and M11 (metallic) absorption peaks and a broad π‑plasmon background in the UV.

Diameter estimation: Relates optical transition energies/wavelengths to mean SWCNT diameter based on tight‑binding/zone‑folding relationships; suitable for diameters between 1–2 nm.

Purity indicator (optical): Derived from ratios of SWCNT-specific peak areas to total absorption (including π‑plasmon background); indicates relative carbonaceous content but not absolute mass purity.

Metallic ratio: Determined from integrated peak areas of metallic and semiconducting regions (formulas provided for R), with caveats about extinction coefficients and diameter dependence.

Sample preparation & instrumentation: Guidance on dispersions (aqueous and solvent), surfactants (e.g., DOC, SDS, SDBS), solid films and use of UV‑Vis‑NIR spectrometers; measurement conditions and data analysis procedures are specified.

Limitations & uncertainty: Requires well‑resolved peaks and similar diameter distributions for valid comparisons; surfactants and dispersing agents can affect spectra. Measurement uncertainties and reporting requirements are addressed.

Applications and Users

ISO/TS 10868:2017 is aimed at:

Materials scientists and researchers characterizing SWCNT batches by spectroscopy.

Manufacturers and quality control labs performing routine SWCNT quality assessment (diameter distribution, optical purity, metallic content indicator).

Metrology labs and testing facilities developing standardized nanomaterial characterization workflows.

Regulatory and compliance teams needing documented, repeatable optical methods for SWCNT characterization.

Practical uses include batch-to-batch comparison, process monitoring, and screening prior to more invasive techniques (TEM, TGA) for complementary information.

Related Standards

ISO/TS 80004‑4 (Nanotechnologies - Vocabulary - Part 4: Nanostructured materials) - referenced terminology.

ISO documents on thermogravimetric analysis and metal impurity characterization (e.g., ISO TS 11308) are complementary for assessing metallic catalyst residues that optical methods cannot detect.

Keywords: ISO/TS 10868:2017, SWCNT, single‑wall carbon nanotubes, UV‑Vis‑NIR absorption spectroscopy, nanotube diameter, purity indicator, metallic SWCNT ratio, nanotechnologies, spectroscopy.

ISO/TS 10868:2017 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications and Users

Related Standards

Технические детали

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