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Method of producing nickel microspheres

A technology of metal nickel and microspheres, which is applied in the field of preparing metal nickel microspheres and achieves the effects of simple process, low cost and good crystallinity

Inactive Publication Date: 2013-12-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this requires additional post-treatment processes to remove these organic molecules

Method used

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  • Method of producing nickel microspheres
  • Method of producing nickel microspheres
  • Method of producing nickel microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1) Dissolve 0.55 g nickel acetate tetrahydrate in 30 ml ethanol, then add 0.5 ml formic acid to get a transparent solution.

[0016] 2) Transfer the solution prepared in step 1) to a solvothermal device, perform a solvothermal reaction at 200 °C for 18 h, then centrifuge the obtained material, and then dry it at 80 °C to obtain metallic nickel microspheres.

[0017] The X-ray diffraction pattern of the prepared metallic nickel microspheres is shown in Figure 1, and the diffraction peaks are consistent with the standard pattern of metallic nickel, indicating that the obtained product is metallic nickel. Calculated by Scherrer's formula, the average crystal diameter is 35 nm. Figure 2 is a scanning electron micrograph of the nickel metal microspheres prepared in this example. It can be seen from the figure that the average particle size of the metal nickel microspheres is about 500-800 nm. Figure 3 is the transmission electron micrograph of the nickel metal microspheres...

Embodiment 2

[0019] 1) Dissolve 0.55 g nickel acetate tetrahydrate in 30 ml ethanol, then add 0.8 ml formic acid to get a transparent solution.

[0020] 2) The solution prepared in step 1) was transferred to a solvothermal device, and the solvothermal reaction was performed at 210 °C for 3 h, and then the obtained material was centrifuged, and then dried at 80 °C to obtain metallic nickel microspheres.

[0021] The scanning electron micrographs of the prepared metallic nickel microspheres are as follows: Figure 4 shown. It can be seen from the figure that the surface of the metal nickel microspheres is relatively rough, and the average particle size of the metal nickel microspheres is about 500-800 nm.

Embodiment 3

[0023] 1) Dissolve 0.55 g nickel acetate tetrahydrate in 30 ml ethanol, then add 0.8 ml formic acid to get a transparent solution.

[0024] 2) Transfer the solution prepared in step 1) to a solvothermal device, perform solvothermal reaction at 230 °C for 30 min, then centrifuge the obtained material, and then dry at 80 °C to obtain metal nickel microspheres.

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Abstract

The invention discloses a method of producing nickel microspheres. The method includes: dissolving nickel acetate in solvent, adding formic acid to obtain transparent solution, transferring the transparent solution to a solvent heater to allow for solvent thermal action, centrifuging obtained material, and drying to obtain nickel microspheres. The method has the advantages that the process is simple, the cost is low and post-treatment is not required; the method is easy for large-scale synthesis; the nickel microspheres produced by the method are well crystalline.

Description

technical field [0001] The invention relates to a method for preparing metal nickel microspheres. Background technique [0002] Metallic nickel nanostructures have special magnetic and catalytic properties, and have a wide range of applications in the fields of catalysis, magnetism, and bioseparation. In recent years, nanostructures such as quantum dots, 1D nanowires, 2D nanosheets, and 3D complex nanostructures have attracted great interest. Three-dimensional micro-nanostructures enable materials to have both nano-scale and micro-scale properties, so it is very important to synthesize three-dimensional metallic nickel micro-nanostructures. However, metallic nickel has a face-centered cubic crystal structure, which makes the prepared metallic nickel nanostructures often have cubo-octahedral, icosahedral, and cubic shapes, which limits the application of metallic nickel. [0003] In order to control the growth of metallic nickel, researchers often add organic molecules to c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24
Inventor 赵高凌何凯韩高荣
Owner ZHEJIANG UNIV
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