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Magnetic nano composite material, preparation method thereof and application in SERS (Surface Enhanced Raman Scattering) detection

A technology of magnetic nano and composite materials, which is applied in the field of materials, can solve problems such as poor stability, and achieve the effects of good accuracy, strong practicability, and good selectivity

Active Publication Date: 2021-11-09
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with Au and Cu, Ag-modified SERS materials are more sensitive, but their stability is poor, so further improvement is still needed

Method used

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  • Magnetic nano composite material, preparation method thereof and application in SERS (Surface Enhanced Raman Scattering) detection
  • Magnetic nano composite material, preparation method thereof and application in SERS (Surface Enhanced Raman Scattering) detection
  • Magnetic nano composite material, preparation method thereof and application in SERS (Surface Enhanced Raman Scattering) detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] This embodiment has prepared a kind of magnetic composite material, and this magnetic composite material is Ti 3 C 2 T x / Fe 3 o 4 / Ag The specific process is: to 50.0mg Ti 3 C 2 T x Add 20.0 mL of ethylene glycol to the powder (purchased from Hangzhou Namao Technology Co., Ltd.), and ultrasonically disperse it for 3 hours to obtain Ti 3 C 2 T x Dispersions. To Ti 3 C 2 T x Add 320mg FeCl to the dispersion 3 ·6H 2 O magnetically stirred for 2.5 h, then added 1.80 g of sodium acetate and 500 mg of polyethylene glycol-400, continued to stir for 3 h, transferred the mixture to a polytetrafluoroethylene hydrothermal reactor, and sealed and heated at 175°C for 16 h. After the reaction, use deionized water and ethanol to wash alternately several times until the solution after magnetic adsorption is colorless and clear, and then redisperse in 10.0mL deionized water to obtain Ti 3 C 2 T x / Fe 3 o 4 Dispersions.

[0060] 18.0mg AgNO 3 Dissolve in 100mL of de...

Embodiment 2

[0063] This embodiment prepares a kind of magnetic composite material, and its difference with embodiment 1 is that Ti 3 C 2 T x Replace with Mo 2 CT x .

Embodiment 3

[0065] This embodiment prepares a kind of magnetic composite material, and its difference with embodiment 1 is that Ti 3 C 2 T x Replace with Mo 2 TiC 2 T x .

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Abstract

The invention discloses a magnetic nano composite material, a preparation method thereof and application in SERS (Surface Enhanced Raman Scattering) detection, the magnetic nano composite material comprises MXene as well as Fe3O4 and Ag nano particles distributed on the surface of the MXene, and the surfaces of the Ag nano particles are coated with citric acid radicals. The material has a good application prospect in an SERS substrate, can integrate separation, enrichment and detection, has the characteristics of high analysis speed, good selectivity, high sensitivity and good accuracy, is simple to operate and high in practicability, can be used for SERS rapid analysis of the phthalocyanine thiazole and the sulfadiazine silver, and has a wide application prospect in the field of SERS analysis of the phthalocyanine thiazole and the sulfadiazine silver. The method is helpful for solving the problem of rapid detection of sulfonamide antibiotics in various samples (especially aquatic products), and has relatively high practical application value.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a magnetic nanocomposite material, a preparation method thereof and an application in SERS detection. Background technique [0002] With the development of the economy and the improvement of human living standards, the use and discharge of antibiotics are also increasing year by year. Sulfonamide antibiotics (Sulfonamides antibiotics, SAs) is a general term for a class of antibiotics with the structure of p-aminobenzenesulfonamide. It exerts an antibacterial effect by interfering with the utilization of anthranilic acid by the enzyme system of bacteria, because of its low price, good curative effect, Wide antibacterial spectrum and other advantages are widely used in aquaculture. However, in recent years, the abuse of sulfonamide antibiotics in aquaculture has seriously endangered the ecological environment and human health. Establishing a rapid analytical method f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
CPCG01N21/658
Inventor 张卓旻余忠宁李攻科
Owner SUN YAT SEN UNIV
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