GB/T 32871-2016 English PDF

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GB/T 32871-2016: Characterization of single-wall carbon nanotubes -- Raman spectroscopy
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Basic data

Standard ID: GB/T 32871-2016 (GB/T32871-2016)
Description (Translated English): Characterization of single-wall carbon nanotubes -- Raman spectroscopy
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G30
Classification of International Standard: 71.040.50
Word Count Estimation: 14,166
Date of Issue: 2016-08-29
Date of Implementation: 2017-03-01
Quoted Standard: GB/T 13966; GB/T 19619; GB/T 30544.3; JJG 02
Regulation (derived from): National Standard Announcement 2016 No.14
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the method of characterizing the diameter, conductivity type, amorphous carbon and defect content of single-walled carbon nanotubes using Raman spectroscopy. This standard applies to surface-treated single-walled carbon nanotube samples.

GB/T 32871-2016: Characterization of single-wall carbon nanotubes -- Raman spectroscopy

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Characterization of single-wall carbon nanotubes.Raman spectroscopy ICS 71.040.50 G30 National Standards of People's Republic of China Single - walled carbon nanotubes characterization Raman spectroscopy 2016-08-29 released 2017-03-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface I Introduction II 1 Scope 1 2 normative reference document 1 3 Terms and definitions 1 4 Principle 2 5 instrument 2 6 sample pretreatment 2 7 Test Step 3 8 Experimental data processing and analysis of results 3 9 Uncertainty analysis 4 Test Report 4 Appendix A (Informative Annex) Raman Spectral Characterization of Single Walled Carbon Nanotubes Example 5 Appendix B (informative) Test Report 9 Reference 10

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the contents of this document may involve patents. The issuer of this document does not assume responsibility for the identification of these patents. This standard is proposed by the Chinese Academy of Sciences. This standard is under the national standard of nanotechnology standardization technical committee (SAC/TC279). This standard is responsible for drafting units. National Center for Nanoscience. This standard participates in the drafting unit. China Institute of Metrology, Institute of Semiconductors, Chinese Academy of Sciences. The main drafters of this standard. Ge Guanglu, Guo Yuting, Xie Liming, Ren Lingling, Tan Pingheng.

Introduction

Single-walled carbon nanotubes are the simplest structure of carbon nanotubes, with unique electrical, optical and mechanical properties in microelectronic devices and nano Composite materials and other fields have broad application prospects. Raman spectroscopy is the most common, non-destructive and rapid experimental technique for characterizing single-walled carbon nanotubes One of the means. Because single-walled carbon nanotubes have a unique one-dimensional nanostructures, their Raman spectra exhibit many new physical phenomena, Strong Raman effect is one of the most important phenomena in Raman spectroscopy of single-walled carbon nanotubes. The Raman spectra of single-walled carbon nanotubes have several characteristics peak. Some of the parameters of the characteristic peaks, such as peak, peak, or intensity, can be used to quantitatively or qualitatively characterize single-walled carbon nanotube samples, The frequency of the single-walled carbon nanotubes can be calculated for the determined laser wavelength, according to the electron transition energy of single-walled carbon nanotubes and Single-walled carbon nanotube diameter and the diameter of the sample, combined with the G-shaped peak shape can determine the conductivity of single-walled carbon nanotubes; according to D The ratio of the modulus to the G mode, and the strength of the G mode can be used to evaluate the amorphous carbon and the defect content in the carbon nanotubes. The development of this standard will be And provide technical guidance for the production and research of single-walled carbon nanotubes. Single - walled carbon nanotubes characterization Raman spectroscopy

1 Scope

This standard specifies the method of characterizing the diameter, conductivity type, amorphous carbon and defect content of single-walled carbon nanotubes using Raman spectroscopy. This standard applies to surface-treated single-walled carbon nanotube samples.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. GB/T 13966 terminology for analytical instruments GB/T 19619 Glossary of Materials for Nanomaterials Nanotechnology terminology - Part 3. Carbon nano - objects GB/T JJG02 laser Raman spectrometer verification procedure

3 terms and definitions

GB/T 19619, GB/T 13966 and GB/T 30544.3 and the following terms and definitions apply to this document. 3.1 Single-walled carbon nanotubes single-walcarbonnanotubes; SWCNTs A hollow quasi-one-dimensional tubular nanocarbon material in which a single-layer graphite sheet is formed by interconnected carbon atoms mainly in the form of sp2 hybridization, The outer diameter of the tube is on the nanometer scale. 3.2 Radial breathing model radialbreathingmode; RBM Characterization of the same phase radial vibration of all carbon atoms of carbon nanotubes. The Raman frequency shift of the radial breathing mode is generally located 400 cm-1 or less. 3.3 D-D-band The characteristic of the high-energy optical phonon near the K-point of the Brillouin boundary of the graphite is affected by the defect involved in its double resonance Raman scattering process Raman model. Visible laser excitation, D mode Raman frequency shift is generally located in 1350cm-1 or so. 3.4 G-band G-band The tangential stretching vibration modes between adjacent carbon atoms in carbon nanotubes. G-mode Raman frequency shift is generally located in 1500cm-1 ~ 1620cm-1. Note. The G-mode is split into a multimodal structure due to the electron-phonon coupling effect in the single-walled carbon nanotubes and the phonon folding effect caused by the curl of the tube wall. 3.5 G 'mod G'-band A second-order Raman model involves the scattering of the high-energy optical phonon valley near the K-point of the graphite Brillouin boundary, which is about twice as large as the D-mode. Visible laser excitation, G 'mode Raman frequency shift is generally located in 2600cm-1 ~ 2700cm-1. ......

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