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Process for preparing aperture-controllable alumina template

An alumina template and pore size technology, applied in the field of electrochemistry, can solve the problems of complicated experiments, narrow preparation range, and less description of the template preparation process, and achieve the effect of simple method and low product cost.

Inactive Publication Date: 2005-11-02
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this process requires a refrigeration device, and the experiment is complicated
Zhejiang University disclosed in Chinese patent application number: 02136111.8 the use of alumina templates to prepare germanium nanowires, but there are few instructions on the specific preparation process of the templates, and the preparation range is also narrow

Method used

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  • Process for preparing aperture-controllable alumina template
  • Process for preparing aperture-controllable alumina template

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Using high-purity aluminum (99.00~99.999%) as raw material, ultrasonic treatment in acetone solution for 5~20 minutes to remove organic contaminants on the surface, and then at a voltage of 10 volts, aluminum sheet as anode, platinum sheet as cathode (aluminum sheet and Platinum sheet area ratio 2-20), electrolyze in a mixed solution of analytically pure perchloric acid and absolute ethanol (volume ratio 0.2-0.25) for about 15-20 minutes to remove oxides on the surface to obtain a bright aluminum sheet. Under the voltage of 20 volts, with 10-20wt% of H 2 SO 4 It is mixed with anhydrous ethanol in a volume ratio of 0.5 to 1 and used as an electrolyte. The electrolyte is magnetically stirred and electrolyzed at room temperature for 2 to 4 hours. A water bath is used for the electrolysis process. Use HCl-CuCl 2 Mixture (CuCl 2 The concentration is 0.1~0.2 mol / L, the mass ratio of HCl is 20~36%, the two are mixed in equal volume) to remove the aluminum base, the reaction time i...

Embodiment 2

[0024] Using high-purity aluminum (99.00~99.999%) as raw material, ultrasonic treatment in acetone solution for 5~20 minutes to remove organic contaminants on the surface, and then at a voltage of 10 volts, aluminum sheet as anode, platinum sheet as cathode (aluminum sheet and Platinum sheet area ratio 2-20), electrolyze in a mixed solution of analytically pure perchloric acid and absolute ethanol (volume ratio 0.2-0.25) for about 15-20 minutes to remove oxides on the surface to obtain a bright aluminum sheet. Under the voltage of 40 volts, with 0.3 mol / L of H 2 C 2 O 4 It is mixed with anhydrous ethanol at a volume ratio of 0.5 to 1 and used as an electrolyte. The electrolyte is magnetically stirred and electrolyzed at room temperature for 3 to 8 hours. A water bath is used for the electrolysis process. Use HCl-CuCl 2 Mixture (CuCl 2 The concentration is 0.1-0.2 mol / L, the mass ratio concentration of HCl is 20-36%, and the two are mixed in equal volume) to remove the aluminum bas...

Embodiment 3

[0026] Using high-purity aluminum (99.00~99.999%) as raw material, ultrasonic treatment in acetone solution for 5~20 minutes to remove organic contaminants on the surface, and then at a voltage of 10 volts, aluminum sheet as anode, platinum sheet as cathode (aluminum sheet Platinum sheet area ratio 2-20), electrolyze in a mixed solution of analytically pure perchloric acid and absolute ethanol (volume ratio 0.2-0.25) for about 15-20 minutes to remove oxides on the surface to obtain a bright aluminum sheet. At a voltage of 60 volts, with 0.3 mol / L of H 2 C 2 O 1It is mixed with anhydrous ethanol in a volume ratio of 0.5 to 1 and used as an electrolyte. The electrolyte is magnetically stirred and electrolyzed at room temperature for 4 to 10 hours. A water bath is used for the electrolysis process. Use HCl-CuCl 2 Mixture (CuCl 2 The concentration is 0.1-0.2 mol / L, the mass ratio concentration of HCl is 20-36%, and the two are mixed in equal volume) to remove the aluminum base by reac...

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Abstract

The invention belongs to the electrochemistry field, in particular relates to the method for preparation of alumina template with controllable aperture. By choosing the miscible liquids of polyatomic acid and absolute ethyl alcohol as electrolyte, and controlling the technological condition, such as voltage, the species and concentration of electrolyte, the nanometer opening alumina template with a small range of diameter is prepared. The process proceeds in a room temperature. It can prepare template with a diameter of 20 to 500 nm. In particular to prepare the template of high pressure and large aperture, there is no need to use chilling unit.

Description

Technical field [0001] The invention belongs to the field of electrochemistry, and particularly relates to a method for preparing an alumina template with a controllable pore size. technical background [0002] The template refers to a film containing high-density nano-columnar holes and a thickness of tens to hundreds of microns. Commonly used templates include ① alumina template with ordered pore structure ② polymer template with disordered pore distribution ③ porous silicon template and so on. The template method is one of the important methods for the synthesis of nanomaterials. Among them, the porous alumina template has simple preparation conditions, low cost, and uniform pore distribution. It is an ideal inorganic template for preparing nanoelectronic materials with highly uniform and orderly shapes. New electronic materials are being developed. It has broad application prospects and is the most widely used template so far. Such as the preparation ...

Claims

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Application Information

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IPC IPC(8): C25D11/04
Inventor 陈丽娟韩凤梅郭燕川彭必先
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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