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A method for preparing magnetic metal nanotubes by pulse electrodeposition

A magnetic metal nanometer, pulse electrodeposition technology, applied in nanotechnology, metal material coating process, electrolytic coatings, etc., can solve the problems of inability to prepare high-quality magnetic metal nanotubes, cost, inability to control the length and diameter of nanotubes, etc. To achieve the effect of being conducive to mass production and preparation, low cost and low purity

Active Publication Date: 2020-01-31
NINGBO ZHETIE JIANGNING CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems in the prior art that the length and diameter of nanotubes cannot be controlled, the preparation of high-quality magnetic metal nanotubes cannot be prepared, the cost is too high, and a single method can only prepare specific types of nanotubes. A method for preparing magnetic metal nanotubes by pulse electrodeposition with controlled nanotube length and diameter, low cost, simple process, and wide application range

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  • A method for preparing magnetic metal nanotubes by pulse electrodeposition
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  • A method for preparing magnetic metal nanotubes by pulse electrodeposition

Examples

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Embodiment 1

[0046] A method for preparing magnetic metal nanotubes by pulse electrodeposition. The method for preparing magnetic metal nanotubes by pulse electrodeposition includes the following steps:

[0047] (A) Template preparation

[0048] (A-1) Primary oxidation: The aluminum sheet is annealed at 500℃ for 4 hours, then sonicated in acetone for 10 minutes, then immersed in a 5wt% sodium hydroxide aqueous solution for 5 minutes, sonicated in acetone for 3 minutes, and then subjected to pretreatment. The treated aluminum flakes are placed in a 0.3mol / L oxalic acid aqueous solution, and electrochemically corroded for 4 hours at a voltage of 40V and a temperature of 0℃ to obtain primary alumina flakes;

[0049] (A-2) Removal of primary oxide film: take the primary alumina flake prepared in step (a-1) and place it in a mixed aqueous solution of phosphoric acid and chromic acid with a phosphoric acid concentration of 6 wt% and a chromic acid concentration of 1.5 wt% at 65°C Soaked in water for 1...

Embodiment 2

[0059] A method for preparing magnetic metal nanotubes by pulse electrodeposition. The method for preparing magnetic metal nanotubes by pulse electrodeposition includes the following steps:

[0060] (A) Template preparation

[0061] (A-1) Primary oxidation: The aluminum sheet is annealed at 500℃ for 4 hours, then sonicated in acetone for 10 minutes, then immersed in a 5wt% sodium hydroxide aqueous solution for 5 minutes, sonicated in acetone for 3 minutes, and then subjected to pretreatment. The treated aluminum flakes are placed in a 0.3mol / L oxalic acid aqueous solution, and electrochemically corroded for 4 hours at a voltage of 40V and a temperature of 0℃ to obtain primary alumina flakes;

[0062] (A-2) Removal of primary oxide film: take the primary alumina flake prepared in step (a-1) and place it in a mixed aqueous solution of phosphoric acid and chromic acid with a phosphoric acid concentration of 6 wt% and a chromic acid concentration of 1.5 wt% at 65°C Soaked in water for 1...

Embodiment 3

[0072] A method for preparing magnetic metal nanotubes by pulse electrodeposition. The method for preparing magnetic metal nanotubes by pulse electrodeposition includes the following steps:

[0073] (A) Template preparation

[0074] (A-1) Primary oxidation: The aluminum sheet is annealed at 500℃ for 4 hours, then sonicated in acetone for 10 minutes, then immersed in a 5wt% sodium hydroxide aqueous solution for 5 minutes, sonicated in acetone for 3 minutes, and then subjected to pretreatment. The treated aluminum flakes are placed in a 0.3mol / L oxalic acid aqueous solution, and electrochemically corroded for 4 hours at a voltage of 40V and a temperature of 0℃ to obtain primary alumina flakes;

[0075] (A-2) Removal of primary oxide film: take the primary alumina flake prepared in step (a-1) and place it in a mixed aqueous solution of phosphoric acid and chromic acid with a phosphoric acid concentration of 6 wt% and a chromic acid concentration of 1.5 wt% at 65°C Soaked in water for 1...

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Abstract

The invention relates to a method for preparing magnetic metal nanotubes through pulse electrodeposition, wherein the method has huge potential application prospects on the aspect of magnetic recording materials. The method has the beneficial effects of being simple, convenient to implement and extremely high in maneuverability. The lengths and the diameters of the prepared magnetic metal nanotubes can be effectively controlled; and according to the method, the cost is relatively low, the requirement for instrument precision is not strict, applicability is extremely high, the method can be used for preparing the various magnetic metal nanotubes and is not limited to preparing the singular magnetic metal nanotube, obvious changing cannot occur in the process steps, and mass production preparation is facilitated.

Description

Technical field [0001] The invention relates to the field of preparation methods of metal nanotubes, in particular to a method for preparing magnetic metal nanotubes by pulse electrodeposition with huge potential application prospects in magnetic recording materials. Background technique [0002] At present, the synthesis methods of magnetic metal nanotubes mainly include electroless plating, atomic layer deposition (ALD), sol-gel and electrodeposition. Among them, electroless plating can only produce metals with high reduction potential that can be reduced by chemical reagents, such as Ni, Co, etc.; ALD requires sophisticated instruments and is only suitable for the preparation of Fe 3 O 4 Although the sol-gel method is simple and convenient and does not require any precision equipment, it can only prepare oxides. In addition, none of the above methods can adjust the properties of nanotubes by controlling the length and diameter of the nanotubes. [0003] Therefore, template-assi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/34C23C14/16C23C14/35C23C14/02C25D11/04B82Y40/00
CPCB82Y40/00C23C14/0005C23C14/025C23C14/165C23C14/3485C23C14/35C25D11/045
Inventor 胡军陈焕新李越星汪晶
Owner NINGBO ZHETIE JIANGNING CHEM
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