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Nanotechnologies - Determination of specific surface area of graphene materials - Methylene blue adsorption method
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Basic data | Standard ID | GB/Z 38062-2019 (GB/Z38062-2019) | | Description (Translated English) | Nanotechnologies - Determination of specific surface area of graphene materials - Methylene blue adsorption method | | Sector / Industry | National Standard | | Classification of Chinese Standard | A20 | | Classification of International Standard | 71.040 | | Word Count Estimation | 18,175 | | Date of Issue | 2019-10-18 | | Date of Implementation | 2020-09-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GBZ38062-2019: Nanotechnologies - Determination of specific surface area of graphene materials - Methylene blue adsorption method
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GB /Z 38062-2019
Nanotechnologies--Determination of specific surface area of graphene materials--Methylene blue adsorption method
ICS 71.040
A20
National Standardization Technical Document of the People's Republic of China
Nanotechnology graphene material specific surface area test
Methylene blue adsorption
Published on.2019-10-18
2020-09-01 implementation
State market supervision and administration
China National Standardization Administration issued
Foreword
This guidance technical document was drafted in accordance with the rules given in GB/T 1.1-2009.
This guidance technical document was proposed by the Chinese Academy of Sciences.
This guidance document is organized by the National Nanotechnology Standardization Technical Committee Nanomaterials Subcommittee (SAC/TC279/SC1)
Return to the mouth.
This guiding technical document was drafted by. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo Moxi Technology Co., Ltd.
Jin Industrial Information Standards Institute, Jinan Shengquan Group Co., Ltd., Ningbo Graphene Innovation Center Co., Ltd.
The main drafters of this guiding technical document. Liu Zhaoping, Zhou Xufeng, Lu Huanming, Qin Zhihong, Hou Huining, Zheng Yingfu, Zhang Gongjun, Zhao Yongsheng,
Wu Tingting, Zhang Xiumei.
Introduction
Graphene materials have a large specific surface area and are widely used in energy, chemical and environmental protection fields such as energy storage, catalysis, sensing and water treatment. Do not
The specific surface area of the graphene material prepared by the same method is greatly different, and the specific surface area of the graphene material is accurately determined.
Important role.
This guidance document uses graphene materials to adsorb methylene blue in the liquid phase, and absorbance of the methylene blue solution before and after adsorption.
Change to calculate the specific surface area of the graphene material. The surface structure and physical and chemical properties of graphene materials prepared by different methods are different in solvents.
There are also large differences in the dispersion behavior; secondly, the adsorption behavior of methylene blue on the surface of graphene sheets is affected by temperature, time and adsorption.
Degree and the amount of graphene added, the monolithic dispersion state of the graphene material in the adsorption system and the surface of the methylene blue on the graphene material
The adsorption state has a great influence on the test method. This guidance technical document can be used as a reference for testing the specific surface area of graphene materials.
Nanotechnology graphene material specific surface area test
Methylene blue adsorption
1 Scope
This guidance document specifies the definitions, principles, instruments, and reagents involved in testing the specific surface area of graphene using methylene blue adsorption.
Sample preparation, test procedures, analytical procedures, results calculations, and test reports.
This guidance document applies to the specific surface area of graphene materials prepared by thermal stripping of graphite oxide, chemical intercalation and mechanical exfoliation.
Test.
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 6682-2008 Analytical laboratory water specifications and test methods
GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values
GB/T 12806-2011 laboratory glass instrument single standard line volumetric flask
GB/T 12807-1991 Laboratory glass instrument indexing pipette
GB/T 15724 laboratory glassware beaker
GB/T 15725.6 laboratory glass instrument grinding flask
GB/T 30544.13 Nanotechnology terminology - Part 13. Graphene and related two-dimensional materials
3 Terms and definitions
The following terms and definitions as defined in GB/T 30544.13 apply to this document. For ease of use, the following is repeated
Certain terms and definitions in GB/T 30544.13.
3.1
Specific surface area specificsurfacearea
Surface area of solid mass per unit mass.
[GB/T 19587-2017, definition 3.11]
3.2
Graphite oxide thermal stripping thermalexfoliationofgraphiteoxide
Introducing an oxygen-containing functional group between the graphene layers of graphite, heating and decomposing the introduced chemical substances and units, generating gas, and peeling off
A layer of the original graphene oxide to prepare a method for reducing graphene oxide.
Note. Thermal stripping and reduction of graphite oxide occur simultaneously.
[GB/T 30544.13-2018, definition 3.2.1.17]
3.3
Chemical intercalation exfoliationviachemicalintercalation
< two-dimensional material> by inserting chemicals and units between the layers of a thicker layered material, and then immersing them in a liquid, using mechanical energy or
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GBZ38062-2019: Nanotechnologies - Determination of specific surface area of graphene materials - Methylene blue adsorption method
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