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Method for synthesizing NiO nanocube particles through milisecond pulsed laser

A nano-cube and pulsed laser technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of small output, difficult control of reaction conditions, low product purity, etc., and achieve particle size distribution Uniform, safe and controllable reaction process, simple process

Inactive Publication Date: 2013-04-03
田飞 +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to address the problems of difficult control of reaction conditions, low product purity, and small yield in the process of preparing NiO nano cube particles in the prior art, and to provide a method that is compatible with reactants by utilizing the advantages of millisecond pulse laser technology to prepare nanomaterials. A new method for preparing NiO nanocube particles in large quantities under normal temperature and pressure conditions with simple process and time effect

Method used

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  • Method for synthesizing NiO nanocube particles through milisecond pulsed laser
  • Method for synthesizing NiO nanocube particles through milisecond pulsed laser

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Embodiment 1

[0026] The output wavelength of Nd-YAG solid-state laser is 1064nm, and the power density is 10 6 W / cm2, pulse width 0.6ms, pulsed laser beam with frequency 10Hz, the laser beam is focused at about 1mm below the surface of the liquid medium, and the spot size is about 0.2mm.

[0027] Mix metal nickel powder with a particle size of 50 μm and deionized water, and use a submersible pump to continuously circulate and disperse it during the reaction.

[0028] The metal nickel powder in the water is bombarded with a millisecond pulse laser, and the laser focus is converged at an appropriate distance below the water surface, creating a high-temperature and high-pressure micro-zone at the laser focus, which promotes the gasification of the metal nickel particles in the micro-zone and then forms in the process of condensation. NiO nanocube particles. The laser power density in the active area is 10 6 W / cm 2 , The time of laser action is 10h.

[0029] Among them: metal nickel powder...

Embodiment 2

[0032] The output wavelength of Nd-YAG solid-state laser is 1064nm, and the power density is 10 7 W / cm2, pulse width 1.0ms, pulsed laser beam with a frequency of 20Hz, the laser beam is focused at about 2mm below the surface of the liquid medium, and the spot size is about 0.3mm.

[0033] Mix metal nickel powder with a particle size of 45 μm and deionized water, and use a submersible pump to continuously circulate and disperse it during the reaction.

[0034] The metal nickel powder in the water is bombarded with a millisecond pulse laser, and the laser focus is converged at an appropriate distance below the water surface, creating a high-temperature and high-pressure micro-zone at the laser focus, which promotes the gasification of the metal nickel particles in the micro-zone and then forms in the process of condensation. NiO nanocube particles. The laser power density in the active area is 10 7 W / cm 2 , The time of laser action is 5h.

[0035] Among them: metal nickel po...

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Abstract

The invention relates to a method for synthesizing NiO nanocube particles through a milisecond pulsed laser. The method realizes the preparation of lots of NiO nanocube particles under a room temperature condition; and the prepared products have high purity. The method comprises the steps of taking micron-level metallic nickel powder as a raw material, and dispersing the micron-order metallic nickel powder in a deionized water to form a mixture; using a submerged pump to enable the metallic nickel powder and water mixture to ceaselessly circulate; using the milisecond pulsed laser to bombard a circulating deionized water medium containing the metallic nickel powder; and purifying the product bombarded by the milisecond pulsed laser to obtain the NiO nanocube particles. The method realizes the synthesis of the NiO nanocube particles at normal temperature and pressures, and the NiO nanocube particles with higher purity are obtained at high efficiency by adopting the method.

Description

technical field [0001] The invention relates to nanometer materials, in particular to a method for synthesizing NiO nanometer cube particles with a millisecond pulse laser. Background technique [0002] NiO nanocube particles are a kind of nanomaterial with regular cubic shape formed by nickel oxide with face-centered cubic structure. Due to the high activity of the exposed outer surface of NiO nanocube particles, the application range of NiO nanocube particle materials has been greatly expanded, and it has shown great potential application value in many scientific and technological fields such as catalysis and new lithium battery electrode materials. [0003] As a new type of nanomaterial, NiO nanocube particle material has become a research hotspot in the field of material science for its preparation, performance and application. At present, the method of preparing NiO nanocube particles is mainly femtosecond laser ablation of pure metal nickel targets in a sealed cavity-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04B82Y30/00
Inventor 田飞曹宏梅林奎郭世珍赵静孙景
Owner 田飞
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