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GB/T 24369.3-2017: Characterization of gold nanorods -- Part 3: Measurement method of surface charge density
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Characterization of gold nanorods -- Part 3: Measurement method of surface charge density
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GB/T 24369.3-2017
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Basic data | Standard ID | GB/T 24369.3-2017 (GB/T24369.3-2017) | | Description (Translated English) | Characterization of gold nanorods -- Part 3: Measurement method of surface charge density | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | N04 | | Classification of International Standard | 17.220.20 | | Word Count Estimation | 15,199 | | Date of Issue | 2017-07-31 | | Date of Implementation | 2018-02-01 | | Quoted Standard | GB/T 32269-2015; GB/T 32668-2016 | | 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 measuring the surface charge density of gold nanorods with zeta potential. This standard is suitable for the measurement of the charge density of gold nanorods with diameter greater than 10 nm and aspect ratio between 1 and 4. The surface charge density of other nanoparticles in the sol system can also be measured according to this standard. | GB/T 24369.3-2017: Characterization of gold nanorods -- Part 3: Measurement method of surface charge density
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Characterization of gold nanorods.Part 3. Measurement method of surface charge density
ICS 17.220.20
N04
National Standards of People's Republic of China
Gold nanorod characterization
Part 3. Methods of measuring surface charge density
Part 3.Measurementmethodofsurfacechargedensity
2017-07-31 Posted
2018-02-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Directory
Preface Ⅰ
Introduction Ⅱ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 principle 2
5 instruments 3
6 test sample pretreatment 3
7 Measurement Step 3
8 Debye length calculation 3
9 surface charge density calculation 4
10 measurement results 4
Appendix A (informative) Gold nanorods surface charge density calculation example 5
Appendix B (informative) gold nanorods aspect ratio and concentration of zeta potential impact 7
Appendix C (Informative) Surface Charge Density Test Report Format 10
References 11
Foreword
GB/T 24369 "gold nanorod characterization" is divided into three parts.
--- Part 1. UV/Vis/NIR absorption spectrometry;
--- Part 2. Optical properties measurement method;
--- Part 3. Surface charge density measurement method.
This section GB/T 24369 Part 3.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This section is proposed by the Chinese Academy of Sciences.
This part of the National Nano Technology Standardization Technical Committee (SAC/TC279) centralized.
This part of the drafting unit. National Nano Science Center.
The main drafters of this section. Wu Xiaochun, Ji Ying Lu, Hou Shuai.
Introduction
Gold nanorods are rod-like gold nanoparticles that have potential applications in biological detection, bioimaging, disease diagnosis and treatment
value. According to the technical report ISO /T R13014.2012 published by the International Organization for Standardization Nanotechnology Committee "nanotechnology engineering nano
Guidelines for Characterization of Physical and Chemical Parameters for Material Toxicity Assessment ", eight key physicochemical parameters that are closely related to toxicity assessment, namely size and
Size distribution, agglomeration/aggregation state, shape, surface area/specific surface area, composition, surface chemistry, surface charge, solubility/dispersibility
Levy This section corresponds to the characterization of surface charges.
The zeta potential is an important parameter for characterizing the surface charge. This section specifies the surface charge of gold nanorods calculated by zeta potential
Density method for the evaluation of gold nanorods colloidal solution stability and interaction with other materials to provide the basis.
Gold nanorod characterization
Part 3. Methods of measuring surface charge density
1 Scope
GB/T 24369 provisions of this part of the zeta potential measurement gold nanorods surface charge density method.
This section applies to the sol system more than 10nm in diameter, aspect ratio between 1 ~ 4 gold nanorods surface charge density measurement, other
The measurement of the surface charge density of the nanoparticles in the sol system can also be performed with reference to this section.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 32269-2015 Nanotechnology Nano-object terms and definitions Nanoparticles, nanofibers and nanosheets
General rules for zeta potential analysis of colloidal particles by electrophoresis GB/T 32668-2016
3 Terms and definitions
GB/T 32269-2015 and GB/T 32668-2016 defined terms and definitions apply to this document. For ease of use, below
Repeatedly listed GB/T 32269-2015 and GB/T 32668-2016 some of the terms and definitions.
3.1
Surface charge density electricsurfacechargedensity
The amount of charge generated on a unit area interface due to the specific adsorption of liquid phase ions or the dissociation of surface groups.
Note. The unit is Coulombs per square meter (C · m-2).
[GB/T 32668-2016, Definition 3.1.1]
3.2
Nanofiber nanofibre
The external dimensions of the two dimensions are similar and at the nanometer scale, and the external dimensions of the remaining one dimension are obviously larger than those of the other two dimensions
Meter object.
Note 1. Nanofibers can be flexible or rigid.
Note 2. For two dimensions of similar dimensions, the difference in external dimensions should be less than 3 times, while the longest external dimension should be more than 3 times larger than the other two dimensions.
Note 3. The longest external dimension may not be on the nanometer scale.
[GB/T 32269-2015, Definition 4.3]
3.3
Nanorods nanorod
Solid nanofibers.
[GB/T 32269-2015, Definition 4.5]
3.4
Surface potential electricsurfacepotential
Potential difference from the particle surface to the homogeneous liquid phase.
Note. The unit is volts (V).
[GB/T 32668-2016, definition 3.1.2]
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