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Preparation method for gallium-based gallium-indium alloy nanorod

A technology of alloy nano-gallium indium, which is applied in the field of preparation of gallium and gallium-indium alloy nanorods, can solve the problems of complex system, unfavorable post-processing or surface modification, and difficulty in reaching the nanometer scale, and achieve the effect of simple preparation steps

Inactive Publication Date: 2017-06-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the liquid metal rods prepared by the template extrusion method are generally large and difficult to reach the nanoscale; and in order to ensure that the prepared balls or rods do not fuse with each other, it is often necessary to add a large amount of stabilizer, which makes the system more complicated and is not conducive to further research. Post-treatment or surface modification of

Method used

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  • Preparation method for gallium-based gallium-indium alloy nanorod
  • Preparation method for gallium-based gallium-indium alloy nanorod
  • Preparation method for gallium-based gallium-indium alloy nanorod

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Effect test

Embodiment 1

[0017] The volume ratio of deionized water and ethanol used in this example is 1:1, the liquid metal used is pure gallium, and the instrument used for preparation is an ultrasonic breaker.

[0018] Put pure gallium and mixed dispersant into a beaker according to 1g of liquid metal corresponding to 20mL of dispersion medium, ultrasonically break at 800W for 4h, after the ultrasonication is over, let it stand for 12h, centrifuge at 1000*G for 3min, and take the supernatant for storage.

[0019] The prepared nanorod has a length of 1-1.5 μm and a diameter of about 200 nm.

Embodiment 2

[0021] The volume ratio of deionized water and ethanol used in this example is 1:3, the liquid metal used is gallium-indium alloy, and the instrument used for preparation is an ultrasonic breaker.

[0022] Put pure gallium-indium alloy and mixed dispersant into a beaker according to 1g of liquid metal corresponding to 20mL of dispersion medium, ultrasonically break for 3h at 600W power, after the ultrasonication is over, let it stand for 12h, centrifuge at 1000*G for 3min, and take the supernatant for storage.

[0023] The prepared nanorod has a length of 0.9-1.2 μm and a diameter of about 120 nm.

Embodiment 3

[0025] The volume ratio of deionized water to ethanol used in this example is 1:5, the liquid metal used is gallium-indium alloy, and the instrument used for preparation is an ultrasonic breaker.

[0026] Put the pure gallium-indium alloy and the mixed dispersant into a beaker according to 1g of liquid metal corresponding to 20mL of dispersion medium, ultrasonically crush at 700W for 2h, after the ultrasonication is over, let it stand for 12h, centrifuge at 1000*G for 3min, and take the supernatant for storage.

[0027] The prepared nanorod has a length of 1-1.2 μm and a diameter of about 100 nm.

[0028] Evaluation methods and results of gallium-based liquid metal nanorod structures of the present invention.

[0029] Scanning electron microscope (FEI Quanta 200F, USA) and transmission electron microscope (Hitachi H-7650, Japan) were used to characterize the morphology of gallium-based liquid metal nanorods. In the electronic mode, the curved surface morphology of the side ca...

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Abstract

The invention provides a preparation method for a gallium-based gallium-indium alloy nanorod and belongs to the technical field of preparation of nano particles. According to the preparation method, batch charging is conducted according to the requirement of 1 g liquid metal corresponding to 20 ml of dispersion media, and the dispersion media is mixed liquid of ethyl alcohol and deionized water; ultrasonication is conducted through a probe-type ultrasonic cell disruptor, ultrasonic power is controlled to 600-800 W, time is 2-4 h, and replenishment of a dispersant lost due to ultrasonic cavitation is conducted attentively in the process; after ultrasonication is finished, an obtained dispersion system stands for 10-14 h, thereby being fully aged; and the aged dispersion system is centrifuged for 3 min under the condition of 1000*G, and supernate is taken and contains the prepared gallium-based liquid metal nanorod. According to the preparation method, a physical breaking method is fully used, the gallium-based liquid metal nanorod is obtained directly, a pure physical process is achieved, main chemical reaction is avoided, the preparation process is safe, efficient and fast, and the obtained liquid metal nanorod can serve as a substrate or a ''building block'' conveniently for further operation.

Description

technical field [0001] The invention relates to a method for preparing gallium and gallium-indium alloy nanorods, belonging to the technical field of nanoparticle preparation. Background technique [0002] Gallium has a low melting point and is easily liquid at room temperature; gallium alloys have a lower melting point than pure gallium, and they can be collectively referred to as gallium-based liquid metals. In recent years, the research on gallium and its alloys has made great progress, and gallium-based liquid metals have also been applied in the field of nanotechnology. At present, liquid metal nanospheres with relatively uniform particle size distribution can be prepared by physical dispersion under the action of an ultrasonic field, and liquid metal rods can also be prepared by template extrusion and other methods. However, the liquid metal rods prepared by the template extrusion method are generally large and difficult to reach the nanoscale; and in order to ensure ...

Claims

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Application Information

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IPC IPC(8): B22F9/06B22F1/00B82Y30/00
CPCB82Y30/00B22F9/06B22F1/0545
Inventor 贺强李泽生张红玥
Owner HARBIN INST OF TECH
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