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Method for preparing silver nanowire array in ordered porous alumina template

A technology of porous alumina and alumina templates, which is applied in the field of preparing silver nanowire arrays, can solve the problems of high requirements for experimental equipment, high cost, and difficult control of experimental conditions, and achieve low requirements for experimental equipment, simplified preparation process, and simple operation Effect

Inactive Publication Date: 2011-11-23
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the electrodeposition method can prepare silver nanowire arrays with excellent performance, it has high requirements for experimental equipment, high cost, complicated and cumbersome process of evaporation and removal of metal conductive layers, and difficult control of experimental conditions, which are not conducive to the development of silver nanowires. Large-scale synthesis of wires and subsequent performance studies of composites

Method used

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  • Method for preparing silver nanowire array in ordered porous alumina template
  • Method for preparing silver nanowire array in ordered porous alumina template
  • Method for preparing silver nanowire array in ordered porous alumina template

Examples

Experimental program
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Effect test

Embodiment 1

[0040] 1. Annealing: Anneal the high-purity aluminum sheet with a purity ≥ 99.99%, hold it at 500°C for 5 hours to eliminate the stress caused by the shearing of the aluminum sheet, and take it out after cooling to room temperature with the furnace.

[0041] 2. Ultrasonic cleaning: immerse the annealed aluminum sheet in pure acetone, ethanol and deionized water in sequence, and ultrasonically clean it for 3 minutes respectively to remove stains on the aluminum surface.

[0042] 3. Remove the natural oxide film: immerse the cleaned aluminum sheet in an 8% NaOH solution (at a constant temperature of 60° C.) for 2 minutes, then take it out and clean it with deionized water to remove the natural oxide film.

[0043] 4. Electrochemical polishing: put the aluminum sheet on the electrolytic device (the anode is connected to the aluminum sheet), and immerse in the electropolishing solution (95vol%H 3 PO 4 (85%)+5vol%H 2 SO 4 (97%)+20g / L CrO 3 ), and use a stirring device to stir t...

Embodiment 2

[0059] 1. Annealing: Anneal the high-purity aluminum sheet with a purity ≥ 99.99%, hold it at 500°C for 5 hours to eliminate the stress caused by the shearing of the aluminum sheet, and take it out after cooling to room temperature with the furnace.

[0060] 2. Ultrasonic cleaning: immerse the annealed aluminum sheet in pure acetone, ethanol and deionized water in sequence, and ultrasonically clean it for 3 minutes respectively to remove stains on the aluminum surface.

[0061] 3. Remove the natural oxide film: immerse the cleaned aluminum sheet in an 8% NaOH solution (at a constant temperature of 60° C.) for 2 minutes, then take it out and clean it with deionized water to remove the natural oxide film.

[0062] 4. Electrochemical polishing: put the aluminum sheet on the electrolytic device (the anode is connected to the aluminum sheet), and immerse in the electropolishing solution (95vol%H 3 PO 4 (85%)+5vol%H 2 SO 4 (97%)+20g / L CrO 3 ), and use a stirring device to stir t...

Embodiment 3

[0071] 1. Annealing: Anneal the high-purity aluminum sheet with a purity ≥ 99.99%, hold it at 500°C for 5 hours to eliminate the stress caused by the shearing of the aluminum sheet, and take it out after cooling to room temperature with the furnace.

[0072] 2. Ultrasonic cleaning: immerse the annealed aluminum sheet in pure acetone, ethanol and deionized water in sequence, and ultrasonically clean it for 3 minutes respectively to remove stains on the aluminum surface.

[0073] 3. Remove the natural oxide film: immerse the cleaned aluminum sheet in an 8% NaOH solution (at a constant temperature of 60° C.) for 2 minutes, then take it out and clean it with deionized water to remove the natural oxide film.

[0074] 4. Electrochemical polishing: put the aluminum sheet on the electrolytic device (the anode is connected to the aluminum sheet), and immerse in the electropolishing solution (95vol%H 3 PO 4 (85%)+5vol%H 2 SO 4 (97%)+20g / L CrO 3 ), and use a stirring device to stir t...

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Abstract

The invention belongs to the field of nano material preparation, and discloses a method for preparing a silver nanowire array in an ordered porous alumina template. The method comprises the following steps: (1) sequentially carrying out annealing and ultrasonic cleaning on a high-purity aluminium sheet, removing a natural oxidation film of the high-purity aluminium sheet, sequentially carrying out electrochemical polishing and two-step anodic oxidation on the high-purity aluminium sheet, and removing an unoxidized aluminum substrate and unoxidized through holes of the high-purity aluminium sheet so as to prepare a two-way ordered porous alumina template; (2) filling silver bromide nanowires into the ordered porous alumina template by using a double-chamber chemical deposition method; and (3) irradiating the ordered porous alumina template filled with the silver bromide nanowires by using an ultraviolet lamp so as to carry out photodecomposition on silver bromides, then forming a silver nanowire array in the ordered porous alumina template. By using the method disclosed by the invention, the process for preparing a silver nanowire array is simplified; the method has low requirements on experimental equipment; and the method is simple in operation, low in cost, and favorable for the low-cost fast filling of a silver nanowire array in an ordered porous alumina template.

Description

technical field [0001] The invention belongs to the field of nanomaterial preparation, and in particular relates to a method for preparing silver nanowire arrays in an ordered porous alumina template. Background technique [0002] Ordered porous alumina is an oxide film with nano-ordered pore structure obtained after electrochemical anodization of high-purity aluminum foil. In 1995, Masuda et al. published a method for preparing highly ordered porous alumina (Ordered Metal Nanohole Arrays Made by a Two-Step Replication of Honeycomb Structures of Anodic Alumina by a Two-Step Replication of Honeycomb Structures of Anodic Alumina, Science ), this method has become the main method for preparing ordered porous alumina. The ordered porous alumina prepared by double anodizing method has high hardness and strength, excellent thermal stability, chemical stability and optical transparency, its pores are arranged in an orderly manner, the pore size is uniform, and the pore size and th...

Claims

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Application Information

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IPC IPC(8): C23C18/14B22F9/30C25D11/24C25D11/12
Inventor 杨修春陆伟候军伟韩珊珊
Owner TONGJI UNIV
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