Process for producing ordered porous anodic alumina form

An alumina template, porous anode technology, applied in anodizing and other directions, can solve problems such as unavailability, long nano-holes, etc., to achieve the effect of improving porosity, stable properties, and improving area scale and success rate

Inactive Publication Date: 2007-07-11
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing lamination technology, photolithography and electron beam etching technology can obtain large-area nano-ordered hole templates, but cannot obtain long nano-holes with uniform diameters, and direct anodic oxidation can only obtain small-area ordered nano-holes template

Method used

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  • Process for producing ordered porous anodic alumina form
  • Process for producing ordered porous anodic alumina form
  • Process for producing ordered porous anodic alumina form

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Polish the aluminum sheet with a mixture of 70% perchloric acid and absolute ethanol (volume ratio 1:4) at 5°C for 10 minutes, and the voltage is 20V;

[0025] 2. After the aluminum sheet is washed with secondary water, it is first oxidized in 1.0mol / L sulfuric acid at a voltage of 20V for 2 hours, and a stainless steel plate is used as the counter electrode;

[0026] 3. Wash the aluminum sheet with a mixed solution of 6% phosphoric acid and 1.8% chromic acid at 60°C for half an hour to remove the oxide film;

[0027] 4. After the aluminum sheet is washed with secondary water, it is anodized for 5 hours with the same voltage as in step 2;

[0028] 5. Use saturated stannous oxide to peel off the aluminum matrix, use 5% phosphoric acid to expand the pores for 15 minutes, and finally store in secondary water.

Embodiment 2

[0030] 1. Polish the aluminum sheet with a mixture of 70% perchloric acid and absolute ethanol (volume ratio 1:4) at 0°C for 10 minutes at a voltage of 20V;

[0031] 2. After the aluminum sheet is washed with secondary water, it is first oxidized in 0.3mol / L oxalic acid at a voltage of 40V for 2 hours, and a stainless steel plate is used as the counter electrode;

[0032] 3. Wash the aluminum sheet with a mixed solution of 6% phosphoric acid and 1.8% chromic acid at 60°C for half an hour to remove the oxide film;

[0033] 4. After the aluminum sheet is washed with secondary water, it is anodized with the same voltage as in step 2 for 8 hours;

[0034] 5. Use saturated stannous oxide to peel off the aluminum matrix, use 5% phosphoric acid to expand the pores for 20 minutes, and finally store in secondary water.

Embodiment 3

[0036] 1. Polish the aluminum sheet with a mixture of 70% perchloric acid and absolute ethanol (volume ratio 1:4) at 3°C ​​for 10 minutes at a voltage of 20V;

[0037] 2. After the aluminum sheet is washed with secondary water, it is first oxidized in 0.6mol / L phosphoric acid at a voltage of 110V for 1.5 hours, and a stainless steel plate is used as the counter electrode;

[0038] 3. Wash the aluminum sheet with a mixed solution of 6% phosphoric acid and 1.8% chromic acid at 60°C for half an hour to remove the oxide film;

[0039] 4. After the aluminum sheet is washed with secondary water, it is anodized with the same voltage as in step 2 for 8 hours;

[0040] 5. Use saturated stannous oxide to peel off the aluminum matrix, use 5% sulfuric acid to expand the pores for 10 minutes, and finally store in secondary water.

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Abstract

The present invention discloses one kind of ordered porous anode oxidized alumina template preparing process. Compared with available technology, the said process has the advantages of capacity one preparing great area highly ordered nanometer template, high template success rate and high template quality including raised nanometer pore arrangement orderliness, pore size homogeneity, depth uniformity and porosity.

Description

technical field [0001] The invention relates to a method for preparing an ordered porous anodized aluminum template. Background technique [0002] Nanomaterials refer to substances with only nanoscale size in the material structure. Due to their special electronic structure and physical properties, nanomaterials have attracted more and more attention as functional materials. In recent years, a lot of work has focused on the research of nanomaterials such as nanowires, nanotubes, nanorods, nanobelts, and nanoalloys. It has outstanding performance in properties such as , force and heat, and has become a hot spot in nanomaterials. The preparation of nanotubes generally adopts template synthesis method, and commonly used templates for synthesizing nanomaterials include porous silicon, polycarbonate, anodized aluminum oxide (AAO) and other templates. [0003] The existing lamination technology, photolithography and electron beam etching technology can obtain large-area nano-ord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/04
Inventor 程发良
Owner DONGGUAN UNIV OF TECH
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