Method for preparing copper nanowires through oil-phase chemical reduction

A copper nanowire and chemical technology, applied in the field of materials, can solve problems such as difficult dispersion, harsh reaction conditions, and difficult application, and achieve the effects of easy operation and implementation, uniform size, and regular line shape

Inactive Publication Date: 2016-02-17
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the post-treatment process of copper nanowires synthesized from templates is cumbersome, and it is often necessary to remove the templates with strong acid, strong alkali or other organic solvents.
The direct vapor deposition method is to form gas-phase reactants through various physical or chemical means, and then directly deposit the formed gas-phase reactants on a specific substrate to form a one-dimensional nanowire structure. Alth

Method used

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  • Method for preparing copper nanowires through oil-phase chemical reduction
  • Method for preparing copper nanowires through oil-phase chemical reduction
  • Method for preparing copper nanowires through oil-phase chemical reduction

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Experimental program
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Embodiment 1

[0043] A method for preparing copper nanowires by oil-phase chemical reduction, comprising the steps of:

[0044] (1) Weighing medicines

[0045] Weigh respectively 0.2094g copper acetylacetonate, 0.0951g nickel chloride hexahydrate, and 0.2932g dimethyl dioctadecyl ammonium chloride (DDAC) in a 50 ml three-necked round-bottomed flask, then pipette 8 ml oleylamine. The magnet is placed at the bottom of the bottle.

[0046] (2) Nitrogen gas

[0047] Nitrogen was passed into the closed device system of the three-necked flask to check the airtightness of the device.

[0048] (3) Reaction condition setting

[0049] Turn on the heating switch of the heating mantle and set the heating temperature to 80°C. After maintaining this temperature for 20 minutes, the reaction temperature was set at 185° C., and the reaction time was 4 hours. The whole reaction process was kept under the protection of nitrogen.

[0050] (4) Washing and centrifugation

[0051] After the reaction, pour...

Embodiment 2

[0055] A method for preparing copper nanowires by oil-phase chemical reduction, comprising the steps of:

[0056] Weigh 0.2094g of copper acetylacetonate, 0.0951g of nickel chloride hexahydrate, and 0.2932g of DDAC into 50ml of three-port round bottom, and pipette 8ml of oleylamine. Under the condition of nitrogen protection, the mixed system was heated and stirred at 80° C. for 20 minutes, and then heated to 170° C. for 4 hours. Cool to room temperature, wash with n-hexane, and centrifuge to obtain a red precipitate at the bottom, which is copper nanowires.

Embodiment 3

[0058] A method for preparing copper nanowires by oil-phase chemical reduction, comprising the steps of:

[0059] Weigh 0.2094g of copper acetylacetonate, 0.0951g of nickel chloride hexahydrate, and 0.2932g of DDAC into 50ml of three-port round bottom, and pipette 8ml of oleylamine. Under the condition of nitrogen protection, the mixed system was heated and stirred at 80° C. for 20 min, and then heated to 200° C. for 4 h. Cool to room temperature, wash with n-hexane, and centrifuge to obtain a red precipitate at the bottom, which is copper nanowires.

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Abstract

The invention discloses a method for preparing copper nanowires through oil-phase chemical reduction. The method comprises: mixing a reducing organic solvent, a cationic surfactant, an inorganic salt catalyst and a copper source together to obtain a mixed liquid A; under the condition of protection with an inert atmosphere, heating the mixed liquid A at a temperature ranging from 40 to 100 DEG C and stirring until all solid reagents are completely dissolved to obtain a solution B; increasing a temperature of the solution B to the range of 170-200 DEG C and preserving heat, thereby obtaining a suspension C; and naturally cooling the suspension C to a room temperature, centrifuging, taking precipitate at the bottom for centrifugal washing by using an organic solvent, and obtaining red precipitate after washing, namely the copper nanowires. The method is simple and easy to implement; the copper nanowires prepared are regular in line form and uniform in dimension; the copper nanowires are made out of elementary substance copper without other impurities, and have diameters ranging from 15 to 35nm and lengths ranging from 5 to 20 microns; besides, the copper nanowires are controllable in morphology and thus are an excellent one-dimensional material.

Description

technical field [0001] The present invention relates to the field of materials. More specifically, it relates to a method for preparing copper nanowires and oil phase chemical reduction. Background technique [0002] In recent years, one-dimensional nanostructures have attracted extensive attention due to their unique optical, electrical, and magnetic properties, especially in the fields of electronics, atom probes, optical devices, transparent conductive materials, and sensors. On the one hand, copper nanowires have high electrical conductivity, and unique mechanical, optical and other physical phenomena will play an extremely important role in future applications; Qingyi. [0003] At present, the methods for synthesizing copper nanowires mainly include template-assisted synthesis, direct vapor deposition, and solution methods. Template-assisted synthesis is a common method for synthesizing copper nanowires due to its simple device, easy operation, and controllable morph...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00B22F9/24B22F1/0547
Inventor 程道建吴登峰戴长庆陈兵李少杰
Owner BEIJING UNIV OF CHEM TECH
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