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A kind of preparation method of metal nanosieve based on polymer

A metal nano and polymer technology, applied in nanotechnology, electroforming nanostructure, electroforming and other directions, can solve the problem of non-reusable alumina template, and achieve the effect of low cost, simple process and easy handling

Inactive Publication Date: 2019-03-05
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the method of template stripping the alumina template is generally a chemical method, and the alumina template cannot be reused

Method used

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  • A kind of preparation method of metal nanosieve based on polymer
  • A kind of preparation method of metal nanosieve based on polymer
  • A kind of preparation method of metal nanosieve based on polymer

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preparation example Construction

[0034] Such as figure 1 Shown, the flowchart of the polymer-based metal nanosieve preparation method provided by the present invention includes the following steps:

[0035] (1) Prepare porous alumina templates by electrochemical anodic oxidation;

[0036] (2) Metal nanosieves are prepared by depositing metal on the surface of the multi-alumina template;

[0037] (3) transfer the metal nanosieve structure on the porous alumina template to the polymer by nanoimprinting method;

[0038] (4) The porous alumina template is separated from the polymer to prepare a polymer-based metal nanosieve.

[0039] The method provided by the invention has simple process, low cost, and can be used for large-scale manufacturing, and the nanoimprinting method can be used to completely transfer the metal nanosieve structure to the polymer, so that the polymer-based metal nano Excellent sieve performance.

no. 1 example

[0040] The first embodiment of the polymer-based metal nanosieve preparation method provided by the present invention comprises the following steps:

[0041] (1) Prepare a porous alumina template by an electrochemical anodic oxidation method, including the following steps:

[0042] (11) Put the aluminum foil with a purity of more than 99.99% into 0.3mol / L oxalic acid solution for the first anodic oxidation, the oxidation voltage is 40V, the oxidation temperature is 5°C, and the oxidation time is 4h;

[0043] (12) Soak the aluminum foil after the first step of anodic oxidation in a mixture of 6wt% phosphoric acid and 1.8wt% chromic acid for 8h at a temperature of 60°C;

[0044] (13) Put the aluminum foil soaked in the mixed solution into 0.3mol / L oxalic acid solution for the second step of anodic oxidation, the oxidation voltage is 40V, the oxidation temperature is 5°C, and the oxidation time is 30min;

[0045] (14) Expand the aluminum foil after the second step of anodic oxid...

no. 2 example

[0056] The second embodiment of the polymer-based metal nanosieve preparation method provided by the present invention includes the following steps:

[0057] (1) Preparation of porous alumina template by electrochemical anodic oxidation method:

[0058] (11) Put aluminum foil with a purity of more than 99.99% into 0.3mol / L oxalic acid solution for the first anodic secondary oxidation, the oxidation voltage is 40V, the oxidation temperature is 3°C, and the oxidation time is 8h;

[0059] (12) Soak the aluminum foil after the first step of anodic oxidation in a mixture of 6wt% phosphoric acid and 1.8wt% chromic acid for 12h at a temperature of 60°C;

[0060] (13) Put the aluminum foil soaked in the mixed solution into 0.3mol / L oxalic acid solution for the second anodic oxidation, the oxidation voltage is 40V, the oxidation temperature is 3°C, and the oxidation time is 50min;

[0061] (14) The aluminum foil after the second step of anodic oxidation was placed in a 5wt% phosphoric a...

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Abstract

The invention discloses a preparation method of a metal nanoscale sieve based on polymer. The preparation method comprises the steps that a porous aluminum oxide template is prepared through an electrochemical anodic oxidation method; a layer of metal is deposited on the porous aluminum oxide template, and a metal nanoscale sieve structure is formed; and through the nanoimprint method, the metal nanoscale sieve structure is transferred onto the polymer. The preparation technique is simple, low in cost and suitable for large-scale industrial production; according to the metal nanoscale sieve structure prepared through the preparation method, due to the fact that the metal nanoscale sieve is completely transferred onto the polymer, the prepared metal nanoscale sieve based on the polymer has the characteristics of being excellent in performance, transparent, light, foldable, portable, easy to treat and the like, and the metal nanoscale sieve has great application value in fields such as fluorescence enhancement, raman enhancement, catalyzing and sensing; and in addition, the metal nanoscale sieve can serve as an electrode material and be broadly applied to fields such as lithium cells, supercapacitors and organic solar cells.

Description

technical field [0001] The invention relates to the field of micro-nano manufacturing, and more specifically, to a method for preparing a polymer-based metal nanosieve. Background technique [0002] Porous alumina is widely used in the preparation of various nanomaterials and devices due to its unique advantages such as regular arrangement, good verticality, low cost, high production efficiency and adjustable structure. For example, for the preparation of arrays of nanodots, nanowires, nanotubes, etc. These nanomaterials are widely used in microelectronics, optics, sensing, chemistry, storage, energy and other fields. Some researchers also deposited metals on porous alumina templates to prepare metal nanosieves. Due to the brittleness of the porous alumina template, the application of this kind of metal nanosieve based on the alumina template is limited in some fields, and the porous alumina template cannot be reused. [0003] Metal nanosieves on porous alumina templates ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D1/02C25D1/20B82Y40/00
CPCB82Y40/00C25D1/006C25D1/02C25D1/20
Inventor 赵文宁徐智谋刘晓光
Owner HUAZHONG UNIV OF SCI & TECH
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