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Preparation method of lead nanoparticles

A nanoparticle and particle technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of inability to obtain lead nano-products, complex and cumbersome processes, and failure to obtain them, with a short time to achieve , simple process, small size effect

Active Publication Date: 2019-08-23
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are deficiencies in this product and its preparation method. At first, the product is not only not pure lead nanoparticles-containing lead oxide, but also inevitably mixed with zinc element and various organic substances added, that is, it cannot be obtained. Pure lead nano-products; secondly, the preparation method has the defects of complex and tedious process and long time-consuming in addition to not being able to obtain pure lead nano-products

Method used

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  • Preparation method of lead nanoparticles
  • Preparation method of lead nanoparticles
  • Preparation method of lead nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The concrete steps of preparation are:

[0035] In step 1, first place the lead target material in liquid nitrogen; wherein, the lead purity of the lead target material is 99.99%. Then use a laser with a wavelength of 1064nm, a pulse width of 5ns, a repetition rate of 25Hz, and a power of 50mJ / pulse to irradiate the lead target for 20 minutes, then take out the lead target to obtain a lead target with lead nanoparticles attached thereon; wherein, The laser with an emission wavelength of 1064nm is a Nd:YAG solid-state laser, and the focus of the laser beam is located on the surface of the lead target.

[0036] Step 2, first place the lead target with lead nanoparticles on it in an organic solvent for ultrasonication and vibration for 5 minutes, then take out the lead target to obtain an organic solution of lead nanoparticles; wherein, the organic solvent is an alcohol solvent, and the One of the alcoholic solvents is ethanol. The lead nanoparticle organic solution is c...

Embodiment 2

[0038] The concrete steps of preparation are:

[0039] In step 1, first place the lead target material in liquid nitrogen; wherein, the lead purity of the lead target material is 99.991%. Then use a wavelength of 1064nm, a pulse width of 7.5ns, a repetition frequency of 23Hz, and a power of 55mJ / pulse to irradiate the lead target for 19 minutes, then take out the lead target to obtain a lead target with lead nanoparticles attached thereon; , the laser with an emission wavelength of 1064nm is a Nd:YAG solid-state laser, and the focus of the laser beam is located on the surface of the lead target.

[0040] Step 2, first place the lead target with lead nanoparticles attached thereon in an organic solvent for ultrasonication and vibration for 6 minutes, then take out the lead target to obtain an organic solution of lead nanoparticles; wherein, the organic solvent is an alcoholic solvent, which is now selected One of the alcoholic solvents is ethanol. The lead nanoparticle organi...

Embodiment 3

[0042] The concrete steps of preparation are:

[0043] Step 1, first place the lead target material in liquid nitrogen; wherein, the lead purity of the lead target material is 99.993%. Then use a laser with a wavelength of 1064nm, a pulse width of 10ns, a repetition rate of 20Hz, and a power of 60mJ / pulse to irradiate the lead target for 18 minutes, then take out the lead target to obtain a lead target with lead nanoparticles attached thereto; wherein, The laser with an emission wavelength of 1064nm is a Nd:YAG solid-state laser, and the focus of the laser beam is located on the surface of the lead target.

[0044] Step 2, first place the lead target with lead nanoparticles on it in an organic solvent for ultrasonication and vibration for 8 minutes, then take out the lead target to obtain an organic solution of lead nanoparticles; wherein, the organic solvent is an alcohol solvent. One of the alcoholic solvents is ethanol. Then lead nanoparticle organic solution is centrifug...

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Abstract

The invention discloses lead nano-particles and a preparation method thereof. The particle diameter of the lead nano-particles is 5-20 nm. According to the preparation method, a lead target material is placed in liquid nitrogen first; then after laser light with the wavelength of 532 nm or 1064 nm, the pulse width of 5-15 ns, the repetition frequency of 15-25 Hz and the power of 50-70 mJ / pulse isused for irradiating the lead target material for 15-20 min, the lead target material is taken out, and the lead target material with lead nano-particles is obtained; and afterwards, after the lead target material with the lead nano-particles is placed in an organic solvent to be subjected to ultrasound and vibration for at least 5 min, the lead target material is taken out, a lead nano-particle organic solution is obtained and is then subjected to centrifugal separation, and the target product is obtained. The lead nano-particles can be widely commercialized to be applied to preparation of precious metal, metallic oxide, metal-oxide composite nano-materials and metastable phase materials of oxide.

Description

technical field [0001] The invention relates to a nano particle and a preparation method, in particular to a lead nano particle and a preparation method thereof. Background technique [0002] Lead (Pb) is widely used in solder in electronic component welding due to its low melting point and unique atomic structure. Lead has good effects in radiation and X-ray protection, and is often used in some high-precision instruments Shockproof aspect. In addition, lead is a very important lubricating material, which is widely used in the fields of solid lubrication, thin film lubrication and boundary lubrication. Lead nanoparticles have unique superconducting properties, lubrication and high reactivity. Recently, people have made unremitting efforts in order to obtain lead nanoparticles, as entitled "Meissner Effect in Colloidal Pb Nanoparticles", Acs Nano., 2010, 4 (10): 5599-5608 ("Meissner Effect in Colloidal Pb Nanoparticles" Snar effect", "American Chemical Society-Nano" 2010,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F9/04B82Y30/00B82Y40/00
Inventor 张洪文符浩蔡伟平
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI