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Process for preparing aperture-controllable alumina template

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

Inactive Publication Date: 2007-12-12
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

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 surface organic pollutants, then under 10 volts, the aluminum sheet is used as the anode, and the platinum sheet is used as the cathode (the aluminum sheet and the platinum sheet are used as the cathode) Platinum sheet area ratio 2-20), electrolysis in the mixed solution of analytical pure perchloric acid and absolute ethanol (volume ratio 0.2-0.25) for about 15-20 minutes, remove surface oxides, and obtain bright aluminum sheet. Under 20 volts, with 10-20wt% H 2 SO 4 It is mixed with absolute ethanol at a volume ratio of 0.5-1 to be used as an electrolyte, the electrolyte is magnetically stirred, and electrolyzed at room temperature for 2-4 hours. The electrolysis process uses a water bath. HCl-CuCl 2 Mixed solution (CuCl 2 The concentration is 0.1~0.2 mol / liter, the mass ratio concentration of HCl is 20~36%, the two are mixed in equal volu...

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 surface organic pollutants, then under 10 volts, the aluminum sheet is used as the anode, and the platinum sheet is used as the cathode (the aluminum sheet and the platinum sheet are used as the cathode Platinum sheet area ratio 2-20), electrolysis in the mixed solution of analytical pure perchloric acid and absolute ethanol (volume ratio 0.2-0.25) for about 15-20 minutes, remove surface oxides, and obtain bright aluminum sheet. At 40 volts, with 0.3 mol / L of H 2 C 2 o 4 It is mixed with absolute ethanol at a volume ratio of 0.5-1 to be used as an electrolyte, the electrolyte is magnetically stirred, and electrolyzed at room temperature for 3-8 hours. The electrolysis process uses a water bath. HCl-CuCl 2 Mixed solution (CuCl 2 The concentration is 0.1-0.2 mol / liter, the mass ratio concentration of HCl is 20-36%, and the two are mixed in eq...

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 surface organic pollutants, then under 10 volts, the aluminum sheet is used as the anode, and the platinum sheet is used as the cathode (the aluminum sheet and the platinum sheet are used as the cathode Platinum sheet area ratio 2-20), electrolysis in the mixed solution of analytical pure perchloric acid and absolute ethanol (volume ratio 0.2-0.25) for about 15-20 minutes, remove surface oxides, and obtain bright aluminum sheet. At 60 volts, with 0.3 mol / L of H 2 C 2 o 4 It is mixed with absolute ethanol at a volume ratio of 0.5-1 to be used as an electrolyte, the electrolyte is magnetically stirred, and electrolyzed at room temperature for 4-10 hours. The electrolysis process uses a water bath. HCl-CuCl 2 Mixed solution (CuCl 2The concentration is 0.1-0.2 mol / liter, the mass ratio concentration of HCl is 20-36%, and the two are mixed in eq...

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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, in particular to a method for preparing an alumina template with controllable aperture. technical background [0002] A template refers to a membrane containing high-density nano-columnar holes with a thickness of tens to hundreds of microns. The commonly used templates are ①alumina template with ordered pore structure, ②polymer template with disordered pore distribution, ③porous silicon template, etc. The template method is one of the important methods for synthesizing nanomaterials. The preparation conditions of the porous alumina template are simple, the cost is low, and the pore distribution is uniform. It is an ideal inorganic template for preparing nanoelectronic materials with a highly uniform and orderly shape. In the development of new electronic materials It has broad application prospects and is the most widely used template so far. Such as the preparation of one-dimensional nanomater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/04C04B35/10C04B38/00C01F7/42
Inventor 陈丽娟韩凤梅郭燕川彭必先
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI