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Process for producing ordered porous anodic alumina form

A technology of porous anode and aluminum oxide film, which is applied in anodic oxidation and other directions, can solve the problems of inaccessibility and long nanopores, and achieve the effects of increased porosity, stable properties and improved quality

Inactive Publication Date: 2005-04-27
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 6% phosphoric acid and 1.8% chromic acid mixed washing solution at 60℃ for half an hour to remove the oxide film;

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

[0028] 5. Strip the aluminum substrate with saturated stannous oxide, expand the pores with 5% phosphoric acid for 15 minutes, and store in secondary water at last.

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, and the voltage is 20V;

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

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

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

[0034] 5. Strip the aluminum substrate with saturated stannous oxide, expand the pores with 5% phosphoric acid for 20 minutes, and store in secondary water at last.

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, and the voltage is 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 6% phosphoric acid and 1.8% chromic acid mixed washing solution at 60℃ for half an hour to remove the oxide film;

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

[0040] 5. Strip the aluminum matrix with saturated stannous oxide, expand the hole with 5% sulfuric acid for 10 minutes, and store it in secondary water at last.

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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 preparation method of an ordered porous anodic alumina template. Background technique [0002] Nanomaterials refer to substances with only nanometer 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, nanoribbons 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 the template synthesis method, and the commonly used templates for the synthesis of nanomaterials include porous silicon, polycarbonate, anodized aluminum oxide (AAO) and other templates. [0003] Existing lamination technology, photolithography and electron beam etching technology can obtain large-area n...

Claims

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Application Information

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