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GB/T 37225-2018: Nanotechnology -- Characterization of multiwall carbon nanotube in aqueous solution -- Extinction spectroscopy
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 37225-2018 | English | 279 |
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Nanotechnology -- Characterization of multiwall carbon nanotube in aqueous solution -- Extinction spectroscopy
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GB/T 37225-2018
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Basic data | Standard ID | GB/T 37225-2018 (GB/T37225-2018) | | Description (Translated English) | Nanotechnology -- Characterization of multiwall carbon nanotube in aqueous solution -- Extinction spectroscopy | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G30 | | Classification of International Standard | 71.040.50 | | Word Count Estimation | 14,198 | | Date of Issue | 2018-12-28 | | Date of Implementation | 2018-12-28 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 37225-2018: Nanotechnology -- Characterization of multiwall carbon nanotube in aqueous solution -- Extinction spectroscopy
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Nanotechnology--Characterization of multiwall carbon nanotube in aqueous solution--Extinction spectroscopy
ICS 71.040.50
G30
National Standards of People's Republic of China
Characterization of multi-walled carbon nanotubes in nanotechnology aqueous solution
Extinction spectroscopy
Published on.2018-12-28
2018-12-28 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Basic Principles 1
5 instruments and equipment 2
6 reagent 3
7 Preparation of sample 3
8 Measurement method 3
9 Measurement results 3
Appendix A (informative) Example 4 of extinction spectroscopy of different multi-walled carbon nanotubes dispersed in aqueous solution
Appendix B (informative) Example of extinction spectroscopy for multi-walled carbon nanotubes dispersed in aqueous solution at different degrees of oxidation
Appendix C (informative) Example 7 of extinction spectroscopy of multi-walled carbon nanotubes dispersed in aqueous solution
Appendix D (informative) Test report format for the determination of the properties of multi-walled carbon nanotubes by extinction spectroscopy
Reference 9
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the Chinese Academy of Sciences.
This standard is under the jurisdiction of the National Nanotechnology Standardization Technical Committee (SAC/TC279).
This standard was drafted. Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Shenzhen Defang Nano Technology Co., Ltd.
The main drafters of this standard. Xu Haiyan, Meng Jie, Wen Tao, Zhang Weiqi, Kong Lingyong, Wang Yuying.
Introduction
Carbon nanotubes have broad application prospects in drug (gene) delivery, biomedical detection and imaging. This standard uses carbon nano
The tube has a conjugated π-electron system, which can absorb the ultraviolet light and the physical properties of the electronic transition, and the multi-wall carbon nanotubes are used by extinction spectroscopy.
The aqueous solution was tested to give the characteristic extinction spectrum of multi-walled carbon nanotubes; and the extinction spectrum was further obtained by peak-spin fitting analysis.
The correlation with the length of the multi-walled carbon nanotubes and the surface oxidation state plays an important role in detecting and aligning the physical and chemical properties of the carbon nanotubes.
Characterization of multi-walled carbon nanotubes in nanotechnology aqueous solution
Extinction spectroscopy
1 Scope
This standard specifies the method of characterizing multi-walled carbon nanotubes dispersed in aqueous solution by extinction spectroscopy, and gives the extinction spectrum and
The relationship between the length of the carbon nanotubes and the oxidation state of the surface.
This standard applies to aqueous solutions of multi-walled carbon nanotubes.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 9721-2006 General rules for molecular absorption spectrophotometry of chemical reagents (UV and visible light)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Multiwall carbon nanotubes multiwalcarbonnanotube; MWCNT
Carbon nanotubes nested by concentric or nearly concentric carbon monolayers with a layer spacing close to that of graphite.
Note. The structure can be seen as a number of single-walled carbon nanotubes nested inside each other; the cross-section is cylindrical when the diameter is small, and becomes a polygon as the diameter increases.
[GB/T 30544.3-2015, definition 4.6].
3.2
Extinction spectrum extinctionspectrum
When the concentration of the substance to be tested and the thickness of the mater are constant, the extinction (or any function of the extinction) corresponds to the wavelength (or any function of the wavelength)
Curve.
[GB/T 33249-2016, definition 3.1].
4 Basic principles
Carbon nanotubes have a conjugated π-electron system, which can absorb ultraviolet light and undergo electronic transition, and multi-walled carbon nanotubes dispersed in an aqueous solution
A characteristic extinction zone appears in the ultraviolet region, and the carbon nanoparticle obtained according to the ultraviolet/visible/near infrared absorption spectroscopy method of GB/T 9721-2006
Tube extinction spectrum, as shown in Figure 1.
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