Preparation method of copper nano material taking amino acid and analogs of amino acid as modifier

A technology of copper nano and modifiers, which is applied in the field of preparation of copper nanomaterials to control the morphology and size, and can solve problems such as easy aggregation, chemical stability, and poor dispersion

Active Publication Date: 2014-04-09
SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the very active chemical properties of nano-copper, it is quickly oxidized when exposed to air, and there is a problem of chemical stability.
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Method used

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  • Preparation method of copper nano material taking amino acid and analogs of amino acid as modifier
  • Preparation method of copper nano material taking amino acid and analogs of amino acid as modifier
  • Preparation method of copper nano material taking amino acid and analogs of amino acid as modifier

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preparation example Construction

[0081] Preparation of Copper Nanomaterials

[0082] The present invention also provides a method for preparing the material as described above, characterized in that it comprises the steps of:

[0083] (1) In an inert medium, add alkali, copper salt and modifier, and mix thoroughly to form a reaction system with pH ≥ 11; preferably, the pH of the system ≥ 12, more preferably ≥ 13.

[0084] (2) Under an inert atmosphere, a reducing agent is added to the reaction system for reaction to obtain copper nanomaterials.

[0085] Wherein, the reaction medium may be a medium selected from (but not limited to) the following group: water, alcohol solvent, amide solvent, sulfoxide solvent, or a combination thereof;

[0086] The base is not particularly limited, and may be (but not limited to) a base selected from the group consisting of sodium hydroxide, potassium hydroxide, ammonia, or a combination thereof; preferably, the base is a strong base, with Keep the system pH in the desired r...

Embodiment 1

[0109] Add 2.42g of sodium hydroxide and 80mL of deionized water into the two-necked flask in sequence, and stir to dissolve all the sodium hydroxide; when the system is cooled to room temperature, add 20mL of copper nitrate solution with a concentration of 0.1M and 2.80g of glycine in sequence, and continue stirring; Then drop 50 μL of hydrazine hydrate solution with a concentration of 35%. When the system starts to change color, heat the system to 60-90°C and continue stirring for 30-60 minutes, and a red solid is formed. Then filter with a water-based microporous filter membrane with a diameter of 50 mm and a pore size of 0.45 μm, and wash with a large amount of deionized water to obtain copper nanowires.

Embodiment 2

[0111] The preparation method is basically the same as in Example 1, except that the added surface modifier is glycine with a mass of 6.28 g, and the obtained product is copper nanowires.

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Abstract

The invention relates to a copper nano material preparing field and reports a preparing method in which the appearance and the size of the copper nano material are adjusted and controlled with amino acid and analogs of amino acid as a modifier. Natural amino acid is rich in source and low in price; the prepared copper nano material can be nano particles, nano lines or mixture of the nano particles and nano lines; the appearance and the size of the prepared copper nano material are well controlled; the prepared copper nano material has good oxidation resistance and is expected to be used as highly efficient low-cost conductive material in conductive films, conductive coatings, electric shielding materials and electric anticorrosive materials, the copper nano material also has a wide range of application in aspect of highly efficient catalysts, antibacterial agents and lubricant additives.

Description

technical field [0001] The invention relates to the field of preparation of copper nanomaterials, in particular, the invention relates to a preparation method for regulating the morphology and size of copper nanomaterials by using amino acids and their analogs as modifiers. Background technique [0002] Nanomaterials refer to substances with at least one dimension in the nanoscale range (1-100nm) in three-dimensional space or materials composed of them as basic units. When the scale of matter is reduced to the nanometer range, due to special effects such as surface effects, quantum size effects, and macroscopic quantum tunneling effects, the materials composed of them often show specific optical, electrical, magnetic, mechanical, and chemical properties. Technology, biomarkers, optoelectronic functions, information storage, and ferrofluids have been widely used. [0003] Due to the rich sources of copper in nature and the low price, the use of copper nano-materials instead ...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F9/24B82Y40/00B82Y30/00
Inventor 李维实余金城赵福刚梅崇余
Owner SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
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