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Preparation method of chiral metal nanohelical fiber array

A metal nano and helical technology, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the application limitations of chiral metal materials, the chiral structure of materials cannot be preserved, and physical methods are difficult to fine structure. control and other problems, to achieve the effect of low cost, simple process and wide application of products

Active Publication Date: 2022-06-21
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, physical methods are difficult to adjust the fine structure, and chemical methods have the problem that the chiral structure of the material cannot be retained after template removal, which limits the application of existing chiral metal materials.

Method used

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  • Preparation method of chiral metal nanohelical fiber array
  • Preparation method of chiral metal nanohelical fiber array
  • Preparation method of chiral metal nanohelical fiber array

Examples

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preparation example Construction

[0033] like figure 1 As shown, the preparation method of the metal nanohelix fiber array of the present invention specifically includes the following steps:

[0034] Step S1, put the substrate into the aminosilylation reagent for a period of time, then take it out and wash it;

[0035] In step S2, the substrate washed in step S1 is soaked in a solution containing metal species to support the metal species;

[0036] In step S3, the substrate loaded with the metal species is put into a mixed solution containing a metal source and an inducer, and a reducing agent is added to carry out a growth reaction for a predetermined time, so that the metal spiral fiber array is grown on the substrate to obtain a metal spiral fiber array substrate, wherein The inducer is a chiral inducer;

[0037] Step S4, removing the residual inducer in the metal helical fiber array substrate.

[0038] This example is for the preparation of gold nanohelix fiber arrays. Specifically, in the above proces...

Embodiment 3

[0063] This embodiment is an experiment of metal nano-spiral fiber arrays prepared from different metal sources, specifically a preparation experiment of gold-silver nano-spiral fiber arrays.

[0064] In this embodiment, the first four steps of the preparation method of the gold-silver nanohelix fiber array are the same as the steps S1 to S3 of the embodiment. The difference is that the growth reaction in step S3 also includes a silver growth step, as follows:

[0065] The gold nanohelix fiber array obtained by the growth reaction was put into a solution containing 5mM silver nitrate and 10mM ascorbic acid, left to react for 5 minutes, taken out, washed with ethanol three times, and dried to obtain the gold-silver nanohelix fiber array.

[0066] Then, the organic matter removal operation is performed on the dried gold-silver nanohelix fiber array to obtain a chirality gold-silver nanohelix fiber array.

[0067] Scanning electron microscopy showed that the gold-silver nanoheli...

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Abstract

The purpose of the present invention is to solve the above problems, and to provide a method for preparing a chiral metal nanohelical fiber array that can realize fine structure regulation and leave no organic matter such as a template. The preparation method includes the following steps: Step S1, placing the substrate on Put it into the aminosilylating reagent and let it stand for a period of time, take it out and wash it; step S2, put the substrate washed in step S1 into the solution containing the metal species and soak it to load the metal species; step S3, put the substrate loaded with the metal species into a mixed solution containing a metal source and an inducer, and a reducing agent is added to carry out a growth reaction for a predetermined time, so that the metal helical fiber array grows on the substrate; step S4, removing the residual inducer in the metal helical fiber array, wherein the inducer A chiral inducer.

Description

technical field [0001] The invention relates to a preparation method of a chiral metal nano-spiral fiber array. Background technique [0002] Metal nanomaterials have high electron density, dielectric properties and catalytic ability, and have the advantages of being able to combine with a variety of biological macromolecules without affecting biological activity. [0003] At present, metal nanomaterials with different morphologies have been synthesized by physical or chemical methods, including metal nanomaterials with chiral properties. Among them, the physical method is to control the morphology of the metal material by means of glancing angle deposition, and the chemical method is to change the morphology of the metal material by introducing a template. [0004] However, the physical method has the problem that it is difficult to control the fine structure, and the chemical method has the problem that the chiral structure of the material cannot be retained after removin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24D01F9/08B82Y30/00B82Y40/00
CPCB22F9/24D01F9/08B82Y30/00B82Y40/00
Inventor 车顺爱刘泽栖段瑛滢
Owner TONGJI UNIV