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Preparation method of ferromagnetic nanowire array

A nanowire array and ferromagnetic technology, applied in the field of preparation of ferromagnetic nanowire arrays, can solve the problem of not preparing ferromagnetic nanowire arrays and the like

Active Publication Date: 2016-09-21
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is currently no template-based method for fabricating ferromagnetic nanowire arrays

Method used

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  • Preparation method of ferromagnetic nanowire array
  • Preparation method of ferromagnetic nanowire array
  • Preparation method of ferromagnetic nanowire array

Examples

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preparation example Construction

[0029] Please also refer to figure 1 and figure 2 , an embodiment of the present invention provides a method for preparing a ferromagnetic nanowire array, which includes the following steps:

[0030] S1: providing a substrate 12 and performing an activation treatment on the substrate 12 . Specifically, in the illustrated embodiment, the substrate 12 is activated by depositing an activation seed layer 14 on the substrate 12, wherein the activation seed layer 14 includes a plurality of metal nanoparticles. The metal nanoparticles are one or more of palladium nanoparticles, gold nanoparticles, platinum nanoparticles, iridium nanoparticles, rhodium nanoparticles, and ruthenium nanoparticles.

[0031] The material of the base 12 can be selected according to actual needs, and it can be a flexible base or a rigid base. The material of the substrate 12 is one or more of metal foil, polymer film, carbon material film, metal oxide film, ceramic film and other film materials. The meta...

Embodiment approach 1

[0043] A nickel nanowire array is prepared and formed on a titanium foil as a substrate.

[0044] The titanium foil was cleaned and dried, wherein the titanium foil was cleaned with deionized water and absolute ethanol respectively, and dried in an oven at 70° C. for 2 hours.

[0045] Configure an activated precursor solution for depositing a palladium (Pd) metal activated seed layer. 0.05 mol / L PdCl 2 Mix with a small amount of concentrated hydrochloric acid. Preferably for the above PdCl 2 The mixed solution was subjected to ultrasonic treatment until the mixed solution presented a uniform reddish-brown color. Take 35 mL of the above mixed solution, add 15 mL of concentrated ammonia water, and 0.1 mL of 85% hydrazine hydrate to obtain the activated precursor solution.

[0046] After stirring the activated precursor solution evenly, place the titanium foil in the activated precursor solution, and perform chemical deposition at 60°C to obtain the palladium metal activated ...

Embodiment 2

[0053] Cobalt ferromagnetic nanowire arrays were prepared and formed using copper foil as a substrate.

[0054] The copper foil was cleaned and dried, wherein the titanium sheet was cleaned with deionized water and absolute ethanol respectively, and the copper foil was dried in an oven at 70° C. for 2 hours.

[0055] Configure an activated precursor solution for depositing a palladium (Pd) metal activated seed layer. 0.05 mol / L PdCl 2 Mix with a small amount of concentrated hydrochloric acid. Preferably for the above PdCl 2 The mixed solution was subjected to ultrasonic treatment until the mixed solution presented a uniform reddish-brown color. Take 35 mL of the above mixed solution, add 15 mL of concentrated ammonia water, and 0.1 mL of 85% hydrazine hydrate to obtain the activated precursor solution.

[0056] After stirring the activated precursor solution evenly, place the copper foil in the activated precursor solution, and perform chemical deposition at 60°C to obtain...

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Abstract

The invention provides a preparation method of a ferromagnetic nanowire array, which comprises the following steps of: providing a substrate, and carrying out activating treatment on the substrate; configuring reaction precursor solution for depositing the ferromagnetic nanowire array, wherein the reaction precursor solution comprises salt solution of which the concentration is greater than 0 and smaller than or equal to 1mol / L and reducing agent solution of which the concentration is greater than 0 and smaller than or equal to 1mol / L, the salt solution comprises ferromagnetic metal salt, a complexing agent and precious metal salt or acid; providing a reaction vessel, and placing the activated substrate in the reaction vessel; applying a parallel magnetic field, wherein the magnetic field direction of the parallel magnetic field is perpendicular to the plane where the substrate is positioned; and adding the reaction precursor solution into the reaction vessel, and heating the solution to perform a reaction so as to prepare and form the ferromagnetic nanowire array on the substrate. According to the novel non-template preparation method provided by the invention, arrangement of ferromagnetic nano particles and the process in which the metal salt of the ferromagnetic nano particles is reduced are controlled to be synchronously carried out by the magnetic field so as to prepare and form the ferromagnetic nanowire array.

Description

technical field [0001] The invention relates to a preparation method of a ferromagnetic nanowire array, in particular to a non-template liquid phase synthesis method of a ferromagnetic nanowire array. Background technique [0002] Arrayed continuous nanostructures have a wide range of applications in electrochemical energy storage, catalysis and many other fields. Especially in the electrochemical energy storage structure, the continuous array of conductive and fluid is not only the basis for the preparation of self-supporting electrode materials that do not require binders and conductive additives, but also its open specific surface structure, continuous electron and ion transport Channels and surface curvature structures that are conducive to stress relief are very suitable for the preparation of high-performance electrochemical electrode materials. Among the electrochemical energy storage electrode materials of nanoscale arrays, the aspect ratio of the nanostructures usu...

Claims

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Application Information

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IPC IPC(8): B81C1/00B22F9/24
CPCB22F9/24B81C1/00349
Inventor 杨诚徐超
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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