Preparation method of multi-layer nanoscale platinum-nickel alloy nano dendritic crystal material

A platinum-nickel alloy and multi-layer technology is applied in the field of preparation of platinum-nickel alloy nano-dendrites, which can solve problems such as difficulty in uniformity and unity, and achieve the effects of simple preparation method, mild reaction conditions, and uniform and regular morphology.

Pending Publication Date: 2020-09-29
孙黎明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is difficult for these methods to achieve uniform alloy nanomaterials with good crystallinity.
Therefore, the widespread preparation of nano-alloy materials still faces many challenges.

Method used

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  • Preparation method of multi-layer nanoscale platinum-nickel alloy nano dendritic crystal material
  • Preparation method of multi-layer nanoscale platinum-nickel alloy nano dendritic crystal material
  • Preparation method of multi-layer nanoscale platinum-nickel alloy nano dendritic crystal material

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preparation example Construction

[0032] The preparation method includes the following steps.

[0033] 1) At room temperature, mix nickel salt and surfactant in reducing solvent, then add platinum salt and stir for 10 minutes after ultrasonication for 30 minutes, so that the solvent and solute are fully mixed.

[0034] 2) Transfer the fully stirred mixed solution to the inner lining of polytetrafluoroethylene, add a magnetic stirring bar, put on the outer lining of the reaction kettle, and tighten the lid of the reaction kettle.

[0035] 3) Transfer the tightened reactor to an oil bath at a constant temperature of 180°C, and react for 12 hours. After the reaction was completed, the heating device was turned off, and the reactor was cooled down to room temperature.

[0036] 4) Take out the black solution in the inner lining of the reaction kettle with a rubber dropper, transfer it to a centrifuge tube, then add a mixed cleaning solution of ethanol and n-hexane, and perform ultrasonic centrifugal cleaning, repe...

example 1

[0040] The implementation process of the method for preparing the multi-layered platinum-nickel alloy nano-dendrite material in this embodiment is as follows.

[0041] At room temperature, the nickel salt and the surfactant were thoroughly mixed in 10 mL of the reducing solvent dimethylformamide, and after ultrasonication for 30 minutes, the platinum salt was added and stirred for 10 minutes to mix thoroughly, wherein the molar ratio of the platinum salt to the nickel salt was 1: 5. The nickel salt is nickel acetate, the platinum salt is chloroplatinic acid, the dosage of chloroplatinic acid is 0.05 mol, the dosage of nickel acetate is 0.25 mol, and the surfactant is dodecyltrimethylammonium chloride, and the dosage is 250 mg.

[0042] Transfer the well-stirred mixed solution to the inner liner of polytetrafluoroethylene with a capacity of 20 mL, add a magnetic stirring bar, cover the outer liner of the reaction kettle, and tighten the lid of the reaction kettle.

[0043] Tra...

example 2

[0048] The implementation process of the method for preparing the multi-layered platinum-nickel alloy nano-dendrite material in this embodiment is as follows.

[0049] At room temperature, the nickel salt and the surfactant were thoroughly mixed in 10 mL of the reducing solvent dimethylformamide, and after ultrasonication for 30 minutes, the platinum salt was added and stirred for 10 minutes to mix thoroughly, wherein the molar ratio of the platinum salt to the nickel salt was 1: 4. The nickel salt is nickel acetate, the platinum salt is chloroplatinic acid, the amount of chloroplatinic acid is 0.05 mol, the amount of nickel acetate is 0.20 mol, and the surfactant is dodecyltrimethylammonium chloride, and the amount is 250 mg.

[0050]Transfer the well-stirred mixed solution to the inner liner of polytetrafluoroethylene with a capacity of 20 mL, add a magnetic stirring bar, cover the outer liner of the reaction kettle, and tighten the lid of the reaction kettle.

[0051] Tran...

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Abstract

The invention belongs to the technical field of chemical synthesis, and relates to a nanoscale metal alloy material, in particular to a preparation method of a multi-layer platinum-nickel alloy nano dendritic crystal. The preparation method can be used for preparing the nanoscale platinum-nickel alloy nano dendritic crystal material with a stable structure, and the obtained platinum-nickel alloy nano dendritic crystal material is good in conductivity, stable in structure and excellent in catalytic activity, can be used for preparing electrodes and catalytic materials, and provides technical support for development research and commercial application of fuel cells and electrode materials.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and relates to the preparation of a solvothermal method and a metal alloy, in particular to a preparation method of multi-level platinum-nickel alloy nano dendrites. [0002] technical background [0003] Nanomaterials mainly include single-metal nanomaterials and alloy nanomaterials. Compared with single-metal materials, alloy nanomaterials have a more stable structure and improved conductivity and hardness. Therefore, some researchers refer to nanomaterials as "third-state crystalline materials" other than crystalline and amorphous states. It is precisely because of these special properties of nanomaterials that the science and technology of nanomaterials produce four major effects, namely, small size effects, quantum effects (including macroscopic quantum tunneling effects), surface effects and interface effects, which have properties that traditional materials do not have. Physical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J35/02B82Y40/00
CPCB01J23/892B01J35/023B01J35/006B82Y40/00B01J35/0033
Inventor 孙黎明
Owner 孙黎明
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