Micro-nano silver powder and preparation method and application thereof

A micro-nano silver and micro-nano technology, applied in the direction of nanotechnology, nanotechnology, nano-medicine, etc., can solve the problem that the morphology and structure of micro-nano silver powder cannot be well controlled, and achieve excellent performance, good dispersion, and realization of The effect of structure and morphology

Pending Publication Date: 2021-08-20
苏州星翰新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the morphology and structure of the micro-nano silver powder prepared by the current method cannot be well controlled, and the structure and morphology of the silver powder are directly related to the quality and performance of the prepared silver powder.

Method used

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  • Micro-nano silver powder and preparation method and application thereof
  • Micro-nano silver powder and preparation method and application thereof
  • Micro-nano silver powder and preparation method and application thereof

Examples

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preparation example Construction

[0026] The embodiment of the present application provides a preparation method of micro-nano silver powder, comprising the following steps:

[0027] Dissolve the peptoid compound in the solvent, then add silver salt and reducing agent, after reaction, filter to obtain micronano silver powder;

[0028] Wherein, the peptoid compound is a β-hydroxybutyryl-amino acid compound, and the structural formula of the β-hydroxybutyryl-amino acid is:

[0029] (R) n It is an α-amino acid substituent or a polypeptide chain formed by polycondensation of α-amino acids.

[0030] It should be noted that in the examples of the present application, the peptoid compound can be used as a dispersant to realize the preparation of micro-nano silver powder. Specifically, the peptoid compound is a β-hydroxybutyryl-amino acid compound, and its structural formula is: By adopting different (R)n groups, the morphology, particle size and structure of the micro-nano silver powder can be adjusted, and then...

Embodiment 1

[0045] The embodiment of the present application provides a preparation method of micro-nano silver powder, comprising the following steps:

[0046] Add 1.8g of silver nitrate and 1.6g of peptoid compound to 60mL of ethanol, then add 2g of reducing agent ascorbic acid, and stir for 30min to mix the solution evenly to obtain a mixed solution; place the above-mentioned mixed solution in a crystal In the kettle, the temperature was raised to 120° C., kept at a constant temperature for 720 minutes, filtered, and washed with ethanol and deionized to obtain micronano silver powder.

[0047] Wherein, the peptoid compound used is β-hydroxybutyryl-lysine pseudo-dipeptide, and its structural formula is:

[0048] Concrete, the preparation method of β-hydroxybutyryl-lysine pseudo dipeptide is:

[0049] S1. Add 0.01mol of tert-butyldimethylsilyl ether β-hydroxybutyric acid, 0.01mol of lysine ethyl ester hydrochloride, and 0.001mol of 4-dimethylaminopyridine into 50ml of dichloromethane ...

Embodiment 2

[0053] The embodiment of the present application provides a preparation method of micro-nano silver powder, comprising the following steps:

[0054] Add 2.4g of silver nitrate and 2.8g of peptoid compound into 60mL of ethanol aqueous solution, then add 2.8g of reducing agent glucose, stir for 50min, and mix the solution evenly to obtain a mixed solution; put the above-mentioned mixed solution in In the crystallization kettle, heat up to 160°C, keep the temperature for 480 minutes, filter, and wash with ethanol and deionization to obtain micronano silver powder, wherein the volume ratio of ethanol and water in the ethanol aqueous solution is 1:1.

[0055] Wherein, the peptoid compound used is β-hydroxybutyryl-glutamic acid pseudo dipeptide, and its structural formula is:

[0056] Specifically, the preparation method of the β-hydroxybutyryl-glutamic acid pseudo-dipeptide can refer to the preparation method of the β-hydroxybutyryl-lysine pseudo-dipeptide in Example 1, specifica...

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Abstract

The invention provides micro-nano silver powder and a preparation method and application thereof. The preparation method of the micro-nano silver powder comprises the following steps that a peptoid compound is dissolved in a solvent, a silver salt and a reducing agent are added for reacting, and filtering is carried out to obtain the micro-nano silver powder, The peptoid compound is a beta-hydroxybutyryl-amino acid compound. According to the preparation method of the micro-nano silver powder, the micro-nano silver powder can be prepared by adopting the peptoid compound as a dispersing agent, the shape, granularity and structure of the micro-nano silver powder can be adjusted by adopting the peptoid compound with different chemical structures, and then the structure and shape of the micro-nano silver powder can be controlled. The prepared micro-nano silver powder is good in dispersity, the specific surface area and the electrical resistivity are both smaller than those of commercially available samples, and good performance is achieved.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a micronano silver powder and a preparation method and application thereof. Background technique [0002] Nano and micron metal silver powder materials are widely used in electronic ceramics, solar photovoltaic power generation, sterilization and disinfection, electronic flexible printing and other fields. However, the morphology and structure of the micro-nano silver powder prepared by the current method cannot be well controlled, and the structure and morphology of the silver powder are directly related to the quality and performance of the prepared silver powder. Therefore, there is an urgent need for a preparation method that can better control the structure and morphology of the micro-nano silver powder. Contents of the invention [0003] In view of this, the present invention proposes a micro-nano silver powder and a preparation method thereof to solve or par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00H01B1/22B82Y5/00B82Y30/00B82Y40/00
CPCB22F9/24H01B1/22B82Y5/00B82Y30/00B82Y40/00B22F1/054
Inventor 刘成孙光辉张建强曾俊良牛亮峰梁玮
Owner 苏州星翰新材料科技有限公司
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