Process for preparing noncrystalline nickel-phosphor-core - shell, hollow shell structure material

A technology of amorphous nickel and structural materials, which is applied in the field of preparation of new core-shell and hollow-shell materials, can solve problems such as reports that have not been disclosed, and achieve the effects of simple and easy-to-control preparation methods, clear structures, and good structural effects

Inactive Publication Date: 2006-02-22
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there are few studies on the morphology control of amorphous alloys, and there are no reports related to the core-shell or empty-shell structure materials of amorphous nickel phosphorus.

Method used

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  • Process for preparing noncrystalline nickel-phosphor-core - shell, hollow shell structure material
  • Process for preparing noncrystalline nickel-phosphor-core - shell, hollow shell structure material
  • Process for preparing noncrystalline nickel-phosphor-core - shell, hollow shell structure material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Polystyrene beads activated with Pd ions

[0027] Polystyrene pellets in 0.01M SnCl 2 Immerse in the solution for 2 minutes, centrifuge and put it into 0.001M PdCl 2 Immerse in the solution for 2 minutes, then centrifuge and wash with water three times to completely remove free metal Pd particles.

[0028] The selected composition is 45g / L NiCl 2 ·6H 2 O, 20g / L NaH 2 PO 2 ·H 2 O, 45g / L Na 3 C 6 h 5 o 7 2H 2 O, 50g / LNH 4 Cl electroless plating solution, pH value about 9, react at 95°C for 10 minutes, centrifuge and wash the product three times with water and three times with ethanol. Its scanning electron microscope image is shown in figure 1 .

Embodiment 2

[0029] Example 2: Preparation of Ni-P / PS core-shell structure material at low temperature by activation of Pt

[0030] Polystyrene pellets in 0.1M SnCl 2 Immerse in the solution for 2 minutes, centrifuge and put it into 0.01M PtCl 2 Immerse in the solution for 2 minutes, then centrifuge and wash with water three times to completely remove free metal Pt particles.

[0031] The selected composition is 30g / L NiSO 4 ·7H 2 O, 30g / L NaH 2 PO 2 ·H 2 O, 60g / L Na 4 P 2 o 7 10H 2 The electroless plating solution of O, the pH value is about 10, reacted for 3 minutes at 25°C, and the product was centrifuged and washed three times with water and three times with ethanol. Its scanning electron microscope image is shown in figure 2 .

Embodiment 3

[0032] Embodiment 3: Preparation of Ni-P / PS core-shell structure material by Ag activation

[0033] Polystyrene pellets in 0.002M SnCl 2 Immerse in the solution for 2 minutes, centrifuge and put it into 0.0005MAgNO 3 Immerse in the solution for 2 minutes, then centrifuge and wash with water three times to completely remove free metal Ag particles.

[0034] The selected composition is 30g / LNiCl 2 ·6H 2 O, 10g / L NaH 2 PO 2 ·H 2 O, 100g / L Na 3 C 6 h 5 o 7 2H 2 O, 50g / LNH 4 Cl electroless plating solution, pH value is about 8, reacted at 60°C for 200 minutes, the product was centrifuged and washed three times with water and three times with ethanol. Its scanning electron microscope image is shown in image 3 .

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Abstract

The invention provides a method for preparation of core-shell, vacant shell structure new materials of amorphous nickel phosphor alloy. The method comprises the following steps: producing the said matrials with metal evoked chemical plating technology, using the polyphenylacetylene globule as mold plates, impregnating the polyphenylacetylene globule in the SnCl2 solvent with the concentration between 0.001-0.1, then deacidizing the predecessor materials, such as Pt, Pt, Ag, Au and so on, forming crystal nucleon of the said metal on the surfaces of polyphenylacetylene globule to activate the suface of polyphenylacetylene globule, finanly firm fixing the amorphous metal-metalloid alloys on the polyphenylacetylene globule with the said metal crystal nucleon evoking by chemical plating , and obtaining the core-shell structure, removing inner core and getting amorphous vacant shell structure with the treatment of solvent. With the method, the amorphous nickel phosphor alloy spherical shell structure new material with the thickness between 50-500nm can be made.

Description

technical field [0001] The invention relates to a preparation method of a novel core-shell and shell material, in particular to a preparation method of an amorphous nickel-phosphorus core-shell and shell material. Background technique [0002] Amorphous alloys have attracted extensive attention from many metallurgists, physicists and chemists due to their unique long-range disorder and short-range order structure. Amorphous alloys have many unique properties such as easy magnetization, corrosion resistance, unique electronic properties, and more. On the other hand, the systematic control of the morphology of nanomaterials is one of the frontiers in materials science. As we all know, when the shape of nanomaterials changes from general spherical particles to other complex structures, they usually exhibit different properties from ordinary nanoparticles, such as unique optical properties, electrical properties, magnetic properties and so on. Taking hollow balls as an example...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00
Inventor 王帅乔明华陈雪莹贺鹤勇范康年
Owner FUDAN UNIV
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