Ordered porous alumina template capable of being directly used in electrochemical deposition and production method

A porous alumina, electrochemical technology, applied in the field of materials, can solve the problems of difficult removal, unfavorable assembly system performance research, etc., to achieve the effect of high preparation success rate, simplified preparation process, and not easy to damage

Inactive Publication Date: 2010-10-06
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can grow composites with good order and high filling rate in AAO templates, the combination of conductive electrodes and AAO templates is very tight and difficult to remove, which is not conducive to the performance research of this assembly system.

Method used

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  • Ordered porous alumina template capable of being directly used in electrochemical deposition and production method
  • Ordered porous alumina template capable of being directly used in electrochemical deposition and production method
  • Ordered porous alumina template capable of being directly used in electrochemical deposition and production method

Examples

Experimental program
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Effect test

Embodiment 1

[0054] (1) Annealing: Put the aluminum foil into the muffle furnace for annealing (maintain a constant temperature of 500, 3-10h) (preferably 5-10h, that is, the duration of the temperature in the muffle furnace is 500°C) (see the prepared Whether the holes are sufficiently ordered, refer to the degree of order in Figure 2), so as to eliminate the stress generated in the process of shearing the aluminum foil;

[0055] (2) Cleaning oil stains: immerse the annealed aluminum foil in acetone, alcohol and deionized water in sequence, and ultrasonically clean them for 3-5 minutes respectively;

[0056] (3) Remove the natural oxide layer: immerse the cleaned aluminum foil in an 8% NaOH solution (at a constant temperature of 60° C.) for 1-3 minutes, then take it out and clean it with deionized water;

[0057] (4) Electropolishing: Put the aluminum foil on the electrolytic device (the anode is connected to the aluminum foil), and immerse it in the electropolishing solution (95vol%H 3 ...

Embodiment 2

[0063] (1) Annealing: Anneal the aluminum foil (500°C, 3-10h) to eliminate the stress generated during the shearing process of the aluminum foil;

[0064] (2) Cleaning oil stains: immerse the annealed aluminum foil in acetone, alcohol and deionized water in sequence, and ultrasonically clean them for 3 minutes respectively;

[0065] (3) Remove the natural oxide layer: immerse the cleaned aluminum foil in an 8% NaOH solution (at a constant temperature of 60° C.) for 1-3 minutes, then take it out and clean it with deionized water;

[0066] (4) Electropolishing: Put the aluminum foil on the electrolytic device (the anode is connected to the aluminum foil), and immerse it in the electropolishing solution (95vol%H 3 PO 4 (85%)+5vol%H 2 SO 4 (97%)+20g-Cr 2 o 3 ) after polishing for 3-5 minutes, take it out, and rinse it with deionized water; the electropolishing parameters are: water bath constant temperature 85°C; electrolytic current 0.8A;

[0067] (5) Primary anodic oxidati...

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Abstract

The invention discloses an ordered porous alumina template capable of being directly used in electrochemical deposition and a production method. The ordered porous alumina template is characterized in that the thickness of a barrier layer of the ordered porous alumina template is 100-300nm; non-oxidized aluminum matrix can be directly used as an electrode for the electrochemical deposition without removing the barrier layer and plating electrodes. The production method comprises the following steps: annealing an aluminum foil to eliminate stress generated in the process of cutting the aluminum foil; washing the annealed aluminum foil to remove blot on the surface of the aluminum foil; removing a natural oxidization layer on the aluminum foil; electropolishing the aluminum foil; carrying out primary anodization on the polished aluminum foil; removing the primary oxidization film on the primary oxidized aluminum foil; and carrying out secondary anodization on the aluminum foil on which the primary oxidization film is removed. The template produced by using the method of the invention has high success rate of production, is difficult to damage, simplifies the production process flow of nanowire / ordered porous alumina composite materials, and is beneficial to research on properties of the composite materia.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a method for preparing an ordered porous alumina template that can be directly used in electrochemical deposition. Background technique [0002] Ordered porous material is a new type of nanostructured material that emerged rapidly in the 1990s. It has been highly valued by the international physics, chemistry and materials science circles, and has rapidly developed into one of the interdisciplinary research hotspots. Ordered porous materials have an ordered pore array and a uniform pore structure microscopically. Therefore, different types of ultrafine particles or atomic clusters are loaded into the pores, and the nanoscale pore network host controls the orientation of the guests. The growth scale of the guest particles is also controlled at the nanometer level. Due to the size effect, quantum confinement effect, and coupling effect of the host / guest interface of nanoparticles,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/12C25D11/16
Inventor 杨修春邹骁陆伟刘艳李晓宁侯军伟
Owner TONGJI UNIV
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