Silk-screen printing SERS sensing array substrate based on fireproof flame-retardant fibers and preparation method and application thereof

A screen printing, fire-retardant and flame-retardant technology is applied to screen-printed SERS sensing array substrates based on fire-resistant and flame-retardant fibers and the fields of their preparation and application, which can solve problems such as inability to meet the requirements, and achieve convenient mass production and Raman spectroscopy. Signal enhancement, easy screen printing effect

Active Publication Date: 2020-03-17
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, research work has been carried out on the assembly of metal nanomaterials on the surface of fiber structure substrates such as paper fibers and cotton fabrics, and good SERS enhancement performance has been obtained, but it cannot meet special occasions, such as fire, explosion and other fire scene. Testing needs

Method used

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  • Silk-screen printing SERS sensing array substrate based on fireproof flame-retardant fibers and preparation method and application thereof
  • Silk-screen printing SERS sensing array substrate based on fireproof flame-retardant fibers and preparation method and application thereof
  • Silk-screen printing SERS sensing array substrate based on fireproof flame-retardant fibers and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A kind of preparation of SERS sensing array of screen printing on the surface of fireproof flame retardant fiber substrate, comprises the following steps:

[0048] 1) Firstly, one-pot method is used to synthesize silver colloid in one step. Heat 100mL of 1mmol / L silver nitrate solution to boiling, then mix 2mL of 0.5mg / mL molybdenum disulfide oxide solution with 0.02g of trisodium citrate evenly, and gradually Add it dropwise to the silver nitrate solution, keep the solution in a boiling state for 25 minutes, then stop heating, and after the solution is cooled to room temperature, centrifuge for 20 minutes. After completion, remove 99% of the supernatant and redisperse in 4 mL of deionized water to obtain AgNPs. rMoS at a concentration of 1.3-1.7mmol / L 2 / AgNPs solution. The resulting rMoS 2 / AgNPs nanocomposite transmission electron microscope image figure 1 As shown, it can be seen that the AgNPs attached to the monolayer MoS 2 On the sheet, the particle size dist...

Embodiment 2

[0052] In this example, rMoS 2 The volume ratio of the / AgNPs solution to the binder PAC solution is 2:1, and the rest are the same as in Example 1.

Embodiment 3

[0054] In this example, rMoS 2 The volume ratio of the AgNPs solution to the binder PAC solution is 1:1, and the rest are the same as in Example 1.

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Abstract

The invention relates to a silk-screen printing SERS sensing array substrate based on fireproof flame-retardant fibers and a preparation method and application thereof. The preparation method comprises the following steps: printing a reduced molybdenum disulfide-nano-silver composite material with SERS activity on the surface of a fireproof flame-retardant fiber substrate through a silk-screen printing technology to form a detection area, and obtaining a silk-screen printing SERS sensing array substrate based on the fireproof flame-retardant fibers, wherein the silk-screen printing SERS sensing array substrate can be used for rapid detection of pollutants on a fire-fighting site. Compared with the substrates in prior art, the silk-screen printing SERS sensing array substrate based on the fireproof flame-retardant fibers has the advantages of being simple in preparation method, high in sensitivity, low in cost, convenient to produce in batches, convenient to carry and the like and has great application potential in the aspect of rapid detection of the environment site, especially in the aspect of in-situ rapid high-sensitivity detection of pollutants at the fire-fighting site.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and optical sensing, and relates to a screen-printed SERS sensing array substrate based on a fire-resistant and flame-retardant fiber and its preparation method and application, and in particular to a fire-resistant and flame-retardant fiber that is easy to prepare and easy to carry Molybdenum disulfide-nano-silver composite material with SERS activity on screen printing and its preparation method, and its application in the rapid detection of trace pollutants in firefighting sites. Background technique [0002] Surface-enhanced Raman scattering (SERS) can obtain enhanced signals than ordinary Raman scattering by adsorbing molecules on the surface of rough metal or metal sol particles, without labeling, high sensitivity, and good accuracy. The SERS enhancement effect mainly depends on the size, morphology and uniformity of metal nanostructures. Using chemical synthesis method, sol-gel metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65B82Y30/00B82Y20/00
CPCG01N21/658B82Y30/00B82Y20/00
Inventor 李原婷李学剑杨圆圆韩生蔺华林薛原
Owner SHANGHAI INST OF TECH
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