Preparation method of copper nanowires uniform in shape

A copper nanowire and uniform technology, applied in the field of nanomaterials, can solve the problems of uneven copper nanowire shape, harsh experimental requirements, and difficult operation, and achieve the effect of low raw material cost, easy operation, and low technical difficulty

Inactive Publication Date: 2017-10-24
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods have defects such as high difficulty in operation, harsh experimental requirements, and complicated processes, and the finally obtained copper nanowires have uneven morphology and large particle size.

Method used

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  • Preparation method of copper nanowires uniform in shape
  • Preparation method of copper nanowires uniform in shape
  • Preparation method of copper nanowires uniform in shape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Take 0.1368g (0.8mol) of copper chloride dihydrate and place it in a polytetrafluoroethylene reactor liner with a volume of 15mL, add 0.1027g (0.4mol) of nickel acetylacetonate, then add 10mL of oleylamine, and add A certain amount of nitrogen gas is introduced to remove the air in the inner tank, the reaction kettle is covered and placed in an oven. The parameters of the oven are set as follows: the reaction temperature is 170° C., and the reaction time is 8 hours.

[0019] (2) After the reaction in step (1) is complete, let the reactor cool naturally in an oven to 25°C-40°C, take out the resultant and centrifuge it at 10,000 rad / min for 10 minutes, take the precipitate and pour it into an appropriate amount of n-hexane and then sonicate it , centrifuged again, repeated centrifugation and ultrasonic treatment 3 times, took the precipitate and stored it in a certain amount of n-hexane.

[0020] (3) Centrifuge the precipitate stored in n-hexane in step (2), and dry ...

Embodiment 2

[0024] Same as Example 1, the difference is that the reaction temperature in step (1) is changed from 170°C to 175°C, the reaction time is changed from 8 hours to 10 hours, and other conditions remain the same.

Embodiment 3

[0026] Same as in Example 1, the difference is that the reactants in step (1) copper chloride dihydrate and nickel acetylacetonate double in mass at the same time, and other conditions remain unchanged.

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Abstract

The invention discloses a preparation method of copper nanowires uniform in shape. The copper nanowires are characterized in that the copper nanowires are in the appearance of brick-red powder after being dried, and are in a uniform wire-shaped structure according to the shape, the average particle size is 35 nm, and the average length is 20 microns. The preparation method includes the specific steps that firstly, cupric chloride dihydrate and acetylacetone nickel with the molar ratio of 2: 1 are dissolved in a moderate amount of oleylamine, and are placed in a reaction kettle inner container made from polytetrafluoroethylene, a moderate amount of nitrogen or argon is introduced to remove air, then a reaction kettle is placed in a drying box, reactants are made to fully react under a certain temperature condition, after a reaction ends, the reactants are made to be naturally cooled to a certain temperature, and by means of repeated centrifuging, supersonic washing treatment and vacuum drying, brick-red copper nanowire samples small in particle size and uniform in shape can be obtained. The preparation method is simple in process, a reaction solvent can be cyclically utilized, the reaction process is environment-friendly, and the obtained copper nanowires can be stored in n-hexane at room temperature for a long time.

Description

technical field [0001] The invention relates to a method for preparing copper nanowires with uniform appearance, belonging to the technical field of nanometer materials. Background technique [0002] Copper nanowires and assembly systems containing copper nanowires have excellent performance in biological activity, electricity, heat, optics, catalysis, etc., and have broad application prospects in industrial catalysis, electronics, medical and health, machinery manufacturing, and other fields. In particular, copper nanowires have high efficiency and strong selectivity, can be dispersed in various lubricating oils in a suitable form and form a stable suspension, and can be used as an advanced lubricant. Containing millions of ultra-fine metal particles per liter, this lubricant bonds to solid surfaces and forms a smooth protective layer, while packing micro-scratches, which greatly reduces wear and friction, especially under heavy loads and low speeds And its advantages are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00B82Y40/00
CPCB82Y40/00B22F9/24B22F1/0547
Inventor 覃爱苗张玉龙
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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