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A kind of preparation method of nano hollow nickel sphere

A technology of hollow and nickel balls, which is applied in the field of preparation of nano-hollow nickel balls, can solve the problems of affecting powder performance, increasing processing steps, increasing environmental pollution, etc., and achieves the effects of short reaction time, high purity and less environmental pollution

Inactive Publication Date: 2017-01-04
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, nickel nanoparticles have self-catalysis. If there is no protection during the liquid phase reaction, the surface of nickel nanoparticles is easy to grow and become thicker through self-catalysis; third, nickel nanoparticles are easy to add dispersant during preparation and storage. Prevents agglomeration of powder particles, which affects the final properties of the powder
Fourth, when sodium hypophosphite is used for reduction, it is often necessary to add strong bases such as sodium hydroxide for assistance, which not only increases subsequent processing steps, but also increases environmental pollution

Method used

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  • A kind of preparation method of nano hollow nickel sphere

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Experimental program
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Effect test

Embodiment 1

[0030] At 80°C, dissolve 0.00025mol of nickel chloride in 5ml of urea-choline chloride (molar ratio 2:1) deep eutectic solvent, react at 120°C for 45min, then add 1ml of deionized water to react for 20min, then Add 6ml of 0.4mol / L NaH at 100°C 2 PO 2 After reacting for 0.5 hour, nano hollow nickel spheres were prepared.

Embodiment 2

[0032] At 80°C, dissolve 0.0005mol of nickel nitrate in 5ml of urea-choline chloride (molar ratio 2:1) deep eutectic solvent, react at 150°C for 30min, then add 1ml of deionized water to react for 20min, and then Add 10ml of 0.2mol / L NaH at 95°C 2 PO 2 After reacting for 50 minutes, nano hollow nickel spheres were prepared.

Embodiment 3

[0034] At 80°C, 0.00125mol of nickel acetate was dissolved in 5ml of urea-choline chloride (molar ratio 2:1) deep eutectic solvent, reacted at 120°C for 45min, and then added 1ml of deionized water for 20min to obtain Ni(OH) 2 , then add 15ml of 0.3mol / L NaH at 90°C 2 PO 2 After reacting for 1 hour, nanometer hollow nickel spheres were prepared.

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Abstract

The invention relates to a preparation method of hollow nanometer nickel spheres, comprising: dissolving a nickel salt in a deep eutectic solvent at 85-100°C, stirring, and then stirring at 110-150°C for 20-50 minutes; Under the condition of stirring, add water dropwise to the above solution, and stir at 110-150°C for 15-30min; under the condition of stirring, keep the temperature at 85-100°C, add the sodium hypophosphite aqueous solution dropwise into the mixing system, and heat after the dropwise addition 0.5‑2h to obtain nanometer hollow nickel spheres. The preparation process of the invention is simple and controllable, the raw materials are easy to obtain, safe and environment-friendly, and the cost is low, and no organic solvent is used in the reaction process, and no toxic substances are discharged, and the invention is suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of preparation of nanometer nickel spheres, in particular to a preparation method of nanometer hollow nickel spheres. Background technique [0002] Due to its low density, large specific surface area, and special optical properties, hollow spheres are widely used in catalysis, packaging of sustained-release drugs, simulation of artificial cells, coating protection of bioactive molecules such as proteins / enzymes / DNA, and coatings. Fields such as fillers or pigments. Powders with hollow structures usually exhibit some special optical, electrical, and magnetic properties due to their different structures from the corresponding solid bodies. [0003] The structure of micro-nano hollow nickel spheres has potential applications in biomedicine, medicine, low-density materials, catalysts and paint industries, and plays an important role in the field of modern science and technology. Therefore, the controlled synthesis of hol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24
Inventor 邢彦军张欢欢刘玉婷
Owner DONGHUA UNIV
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