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Liquid metal nanoparticles with core-shell structure and preparation method thereof

A liquid metal, core-shell structure technology, applied in metal processing equipment, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problems of stable existence of tiny particles, difficult to maintain stable existence, etc., to achieve low cost , easy to achieve, good application prospects

Inactive Publication Date: 2019-03-19
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, liquid metal has high surface tension and surface energy, and it is difficult to disperse it into tiny particles. The main reason is that the dispersed small particles will quickly fuse to form large droplets and settle in a short time, which is difficult to maintain. its stable existence
At present, there is no effective means to disperse liquid metal into tiny particles and keep the dispersed tiny particles stable.

Method used

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  • Liquid metal nanoparticles with core-shell structure and preparation method thereof
  • Liquid metal nanoparticles with core-shell structure and preparation method thereof
  • Liquid metal nanoparticles with core-shell structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of liquid metal nano particle with core-shell structure, its preparation method comprises the steps:

[0029] (1) Take 5ml liquid metal (Ga 75.5 In 24.5 ) mixed with 5ml glycerol in a beaker;

[0030] (2) Put the mixture of liquid metal and glycerol into an ultrasonic device to disperse for 5 minutes, take out the mixture and transfer the fine liquid evenly dispersed in the upper layer to another beaker;

[0031] (3) Continue to ultrasonically disperse the part of the fine liquid for 15 minutes to disperse the liquid metal into nanoparticles, and obtain liquid metal nanoparticles with a core-shell structure.

[0032] In step (2) and step (3), the ultrasonic power is selected as 70% of the rated power, ie 385W.

[0033] According to dynamic light scattering instrument and transmission electron microscope, the liquid metal nanoparticles with core-shell structure prepared in this example have a particle diameter distribution of 10-64 nm. figure 1 is the macrosco...

Embodiment 2

[0036] A kind of liquid metal nano particle with core-shell structure, its preparation method comprises the steps:

[0037] (1) Take 7.5ml liquid metal (Ga 75.5 In 24.5 ) mixed with 5ml glycerol in a beaker;

[0038] (2) Put the mixture of liquid metal and glycerol into an ultrasonic device to disperse for 5 minutes, take out the mixture and transfer the fine liquid evenly dispersed in the upper layer to another beaker;

[0039] (3) Continue to ultrasonically disperse the part of the fine liquid for 15 minutes to disperse the liquid metal into nanoparticles, and obtain liquid metal nanoparticles with a core-shell structure.

[0040] In step (2) and step (3), the ultrasonic power is selected as 70% of the rated power, ie 385W.

[0041] According to the dynamic light scattering instrument and the transmission electron microscope, the diameter distribution of the liquid metal nanoparticles with the core-shell structure prepared in this embodiment is 10-68 nm.

Embodiment 3

[0043] A liquid metal nanoparticle with a core-shell structure, the difference between its preparation method and Example 1 is that the liquid metal Ga in the step (1) of Example 2 is 75.5 In 24.5 Adjust the volume ratio with glycerol to 2:1, that is, 10ml liquid metal Ga 75.5 In 24.5 Mix with 5ml glycerol.

[0044] According to the dynamic light scattering instrument and transmission electron microscope, the diameter distribution of the liquid metal nanoparticles with core-shell structure prepared in this embodiment is 10-70 nm.

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Abstract

The invention relates to a liquid metal nanoparticles with a core-shell structure and a preparation method thereof. According to the liquid metal nanoparticles with the core-shell structure, the liquid metal is mixed with a high-viscosity organic material, after ultrasonic scattering, fine liquid which is uniformly dispersed on the upper layer is taken out, and continuously carrying out ultrasonicscattering, until the liquid metal nanoparticles with the core-shell structure are prepared. According to the method, the liquid metal nano-particles is prepared, the particle size is small, the sizedistribution is centralized, the preparation process is simple, fast and efficient, the cost is low, the implementation is easy, the prepared nano-particles can stably exist and still have no obviousagglomeration and sedimentation after being placed for more than 100 days, so that a good foundation for material preparation is provided for application of the liquid metal nano-particles.

Description

technical field [0001] The invention relates to the technical field of micro-nano liquid metal, in particular to a liquid metal nano-particle with a core-shell structure and a preparation method thereof. Background technique [0002] Metal nanoparticles have a wide range of applications in science and industry due to their unique properties. However, metal nanoparticles have high surface energy and large specific surface area, and are extremely prone to agglomeration, so the stability between nanoparticles is of great significance to metal nanoparticles. [0003] Liquid metal refers to a class of metals whose melting point does not exceed the melting temperature of aluminum (ie 660.37°C), including mercury, cesium, gallium, rubidium, potassium, sodium, indium, lithium, tin, bismuth, thallium, cadmium, lead, zinc, antimony , magnesium, aluminum, among which mercury, gallium-indium alloy, gallium-indium-tin alloy and sodium-potassium alloy are liquid at room temperature. Nan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C22C28/00B22F9/06B82Y30/00B82Y40/00
CPCC22C28/00B82Y30/00B82Y40/00B22F9/06B22F1/0545B22F1/07B22F1/107
Inventor 陆泳宇刘静
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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