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Preparation method for precious metal and transition metal nanowires and nano reticular material

A technology of transition metals and mesh materials, applied in metal material coating technology, material analysis through optical means, nanotechnology, etc., can solve the problems of complex product separation process and difficult control of reaction process, and achieve a wide range of components , short production cycle and low cost

Active Publication Date: 2017-11-07
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Researchers used this method to successfully prepare a series of metal nanowires, nanotubes, nanowhiskers, etc. This method is widely used, but the reaction needs to be carried out under high temperature and pressure, and there are shortcomings such as difficult control of the reaction process and complicated product separation procedures.

Method used

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  • Preparation method for precious metal and transition metal nanowires and nano reticular material
  • Preparation method for precious metal and transition metal nanowires and nano reticular material
  • Preparation method for precious metal and transition metal nanowires and nano reticular material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) with Cu 30 Zr 60 al 5 Ag 5 As the nominal composition of the initial alloy, the pure elements required for the initial alloy (Cu>99.9999wt%, Zr>99.9wt%, Al>99.999wt%, Ag>99.99wt%) are converted into mass (10g ) and weighed respectively, and then placed in a high-vacuum electric arc furnace to vacuum the cavity to 10 -4 Below Mpa, and filled with high-purity argon (>99.9wt%).

[0025] (2) Use high vacuum arc melting equipment to pair the prepared Cu 30 Zr 60 al 5 Ag 5 The initial alloy constituent materials are melted.

[0026] (3) Remove Cu from the surface scale 30 Zr 60 al 5 Ag 5The initial alloy ingot is re-melted by induction heating in the quartz tube, and is continuously and rapidly sprayed onto the water-cooled copper roller (the diameter of the copper roller is 220mm, and the rotation speed is 3000r / min) under the action of high-purity argon gas with a pressure of about 0.2MPa to form a width 1-2mm, Cu with a thickness of about 20μm 30 Zr 60 A...

Embodiment 2

[0031] (1) with Cu 50 Zr 45-x Al 5 Ag x (x=2, 5, 7, 10, x is the atomic percentage) as the initial alloy, the pure elements required for the initial alloy (Cu>99.9999wt%, Zr>99.9wt%, Al>99.999wt%, Ag>99.99 wt%), converted into mass (10g) according to the atomic percentage of the alloy and weighed respectively, and then placed in a high-vacuum electric arc furnace to vacuum the cavity to 10 -4 Below Mpa, and filled with high-purity argon (>99.9wt%).

[0032] (2) Use high vacuum electric arc furnace melting equipment to pair the prepared Cu 50 Zr 45-x Al 5 Ag x (x = 2, 5, 7, 10) initial alloy constituent materials are melted.

[0033] (3) Remove Cu from the surface scale 50 Zr 45-x Al 5 Ag x (x=2, 5, 7, 10) The initial alloy ingot is re-melted by induction heating in the quartz tube, and is continuously and rapidly sprayed onto the water-cooled rotating copper roller under the action of high-purity argon with a pressure of about 0.2MPa (copper roller diameter 220mm,...

Embodiment 3

[0039] (1) with Cu 30 Zr 60 Al 5 Ag 5 As the nominal composition of the initial alloy, the pure elements required for the initial alloy (Cu>99.9999wt%, Zr>99.9wt%, Al>99.999wt%, Ag>99.99wt%) are converted into mass (10g ) and weighed respectively, and then placed in a vacuum induction arc furnace, and the cavity was vacuumed to 10 -4 Below Mpa, and filled with high-purity argon (>99.9wt%).

[0040] (2) Use high vacuum electric arc furnace melting equipment to pair the prepared Cu 30 Zr 60 Al 5 Ag 5 The initial alloy constituent materials are melted.

[0041] (3) Remove Cu from the surface scale 30 Zr 60 Al 5 Ag 5 The initial alloy ingot is re-melted by induction heating in the quartz tube, and is continuously and rapidly sprayed onto the water-cooled rotating copper roller (the diameter of the copper roller is 220mm, and the rotation speed is 3000r / min) under the action of high-purity argon gas with a pressure of about 0.2MPa, forming a width of 1 -2mm, Cu with a ...

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Abstract

The invention discloses a preparation method for precious metal and transition metal nanowires and a nano reticular material, and belongs to the field of nanomaterial preparation. The preparation method comprises the following steps that firstly, a Cu-Zr-Al-Ag non-crystal alloy thin belt is prepared by adopting a solution fast quenching method; then a suitable corrosive liquid is selected, chemical de-alloying processing is conducted, Zr and Al elements are removed, and a nanoporous copper silver composite material is obtained; after the end of the corrosion process, the nanoporous copper silver composite material is washed repeatedly through distilled water and absolute ethyl alcohol, after the nanoporous copper silver composite material is dried by air, precious metal or transition metal atom clusters are sputtered onto the surface of the nanoporous copper silver composite material through ion sputtering equipment, the precious metal or transition metal nanowires grow out, the diameter of the nanowires is 10-100 nm, and the nanowires grow continuously in a staggered mode to form the nano reticular material. The preparation method is simple and convenient in technology, economical and controllable in process, a prepared precious metal nanonet shows the good performance such as surface enhanced raman scattering (SERS), the broad application prospects in optics, electricity, catalysis, biology and other areas are achieved.

Description

Technical field: [0001] The present invention relates to the design and preparation method of noble metal and transition metal nanomaterials. Specifically, Cu-Zr-Al-Ag amorphous alloy thin strips are first prepared by solution quenching, and then chemical dealloying is used to Cu and Zr in the alloy are dealloyed to obtain a nanoporous copper-silver composite material, and then an ion sputtering device is used to sputter noble metal or transition group metal atomic clusters onto the surface of the nanoporous copper-silver composite material, thereby preparing a noble metal or Transition metal nanowires or nanomesh. Background technique: [0002] One-dimensional nanomaterials refer to materials that are in the nanoscale range (1-100nm) in the lateral direction and have no limitation in the vertical direction. The noble metal or transition group metal nanowires and nanonets involved in the present invention belong to one-dimensional nanomaterials, and the nanonets are actuall...

Claims

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Application Information

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IPC IPC(8): C22C1/08C23F1/44C23C14/16C22C45/00G01N21/65B82Y40/00
CPCG01N21/658C22C1/08C22C45/001C23C14/165C23F1/44B82Y40/00C22C1/11
Inventor 刘雄军王晶吕昭平李睿王辉吴渊
Owner UNIV OF SCI & TECH BEIJING
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