Silver nanoline-ReS2 functional composite material and preparation method thereof

A functional composite material, silver nanowire technology, applied in catalyst activation/preparation, nanotechnology, nanotechnology, etc., can solve the problems of insufficient stability, uneven Raman activity, poor controllability, etc., and achieve anti-oxidation. Strong ability, low cost, and the effect of improving SERS activity

Pending Publication Date: 2021-01-01
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the invention is to provide a silver nanowire-ReS 2 Functional composite materials, which solve the p

Method used

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  • Silver nanoline-ReS2 functional composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0046]Example 1

[0047]Step 1. Prepare silver nanowires,

[0048]1.1) Mix 120mL of glycerol and 4.9g of polyvinylpyrrolidone in a three-necked round-bottomed flask, and stir at 90°C for 15min with a strong magnetic field;

[0049]1.2) When the temperature naturally drops to 40°C, add 7 mL of a glycerol solution containing 0.3 mL of water and 48 mg of sodium chloride to the flask, and stir for 8 minutes with a strong magnetic field;

[0050]1.3) Then 1.21g of silver nitrate was quickly added to the solution, gently stirred (60rpm), and then the reaction temperature was increased from 40°C to 170°C within 40 minutes;

[0051]1.4) When the temperature reaches 170°C, stop heating, immediately pour the solution in the flask into a 500mL beaker, then add deionized water at a ratio of 1:1 to lower the temperature, leave it at room temperature for two days, and remove the supernatant , Obtain the silver nanowire solution;

[0052]The entire reaction process in step 1 is carried out under reflux conditions.

[...

Example Embodiment

[0063]Example 2

[0064]Step 1. Prepare silver nanowires,

[0065]1.1) Mix 120mL of ethylene glycol and 4.9g of polyvinylpyrrolidone in a three-necked round-bottomed flask, and stir for 15min under strong magnetic at 90°C;

[0066]1.2) When the temperature naturally drops to 60℃, add 0.7mL water and 72mg sodium chloride to the flaskEthylene glycolSolution 7mL, strong magnetic stirring for 8min;

[0067]1.3) Quickly add 1.21g of silver nitrate to the solution, stir gently (60rpm), and then raise the reaction temperature from 60°C to 210°C within 50 minutes;

[0068]1.4) When the temperature reaches 210°C, stop heating, immediately pour the solution in the flask into a 1000mL beaker, then add deionized water at a ratio of 1:2 to lower the temperature, and leave it at room temperature for two days to remove the supernatant , Obtain the silver nanowire solution;

[0069]The entire reaction process in step 1 is carried out under reflux conditions.

[0070]Step 2. Purify and process the silver nanowires,

[0071...

Example Embodiment

[0078]Example 3

[0079]Step 1. Prepare silver nanowires,

[0080]1.1) Mix 150mL of glycerol and 5.14g of polyvinylpyrrolidone in a three-necked round-bottomed flask, and stir with strong magnetic at 100°C for 20min;

[0081]1.2) When the temperature naturally drops to 50°C, add 7 mL of a glycerol solution containing 1.2 mL of water and 16 mg of ferric chloride to the flask, and stir for 8 minutes with a strong magnetic field;

[0082]1.3) Then 1.21g of silver nitrate was quickly added to the solution, gently stirred (60rpm), and then the reaction temperature was increased from 50°C to 230°C within 40 minutes;

[0083]1.4) When the temperature reaches 230°C, stop heating, immediately pour the solution in the flask into a 1000mL beaker, then add deionized water in a ratio of 1:3 to lower the temperature, leave it at room temperature for two days, and remove the supernatant , Obtain the silver nanowire solution;

[0084]The entire reaction process in step 1 is carried out under reflux conditions.

[0085]...

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Abstract

The invention discloses a silver nanowire ReS2 functional composite material. The surface of a silver nanowire is coated with a layer of ReS2 nanosheet. The invention also discloses a preparation method of the silver nanowire ReS2 functional composite material. The preparation method comprises the following steps: 1), synthesizing silver nanowires by adopting a polyol method; 2), purifying the silver nanowire to obtain a washed and purified silver nanowire; dispersing the washed and purified silver nanowires in a solvent; centrifuging the dispersed silver nanowire solution in a centrifugal machine, and ultrasonically dispersing the centrifuged precipitate to obtain silver nanowire dispersion liquid; 3), preparing a uniformly dispersed ReS2 nanosheet; and 4), performing hydrothermal compounding on the silver nanowire dispersion liquid and the ReS2 nanosheet to obtain the silver nanowire-ReS2 functional composite material. According to the preparation method, Raman scattering with higherstrength can be provided, and the SERS activity is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, photocatalysis and Raman enhancement, and relates to a silver nanowire-ReS 2 Functional composite material, the present invention also relates to this kind of silver nanowire-ReS 2 Preparation methods of functional composite materials. Background technique [0002] Surface Raman-enhanced technology is one of the most sensitive and effective analytical techniques at present. In the mid-1970s, surface-enhanced Raman scattering was first observed on silver electrodes. Surface Raman scattering is due to the coupling effect of the surface plasmon of the metal. When the Raman spectrum is formed near the metal surface and the molecule to be measured, it will be strongly enhanced in signal, thus forming a surface-enhanced Raman spectrum. Surface-enhanced Raman scattering plays an important role in the field of analysis and detection. However, with its continuous development, noble met...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J23/50B01J35/06B01J37/10B82Y30/00B82Y40/00B22F1/02B22F1/00B22F9/24G01N21/65
CPCB01J27/04B01J23/50B01J35/06B01J37/10B01J35/004B01J37/0036B82Y30/00B82Y40/00B22F9/24G01N21/658B22F1/0547B22F1/145B22F1/16Y02E60/36
Inventor 王哲杜丹
Owner XI'AN POLYTECHNIC UNIVERSITY
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