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Quick-response and completely reversible optical hydrogen peroxide sensor and preparation method thereof

A hydrogen peroxide and fast response technology, applied in the field of measurement and analysis, can solve problems such as poor reversibility and slow response speed, and achieve high accuracy, fast response and good stability

Pending Publication Date: 2021-01-12
上海烁谱科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new hydrogen peroxide sensor and preparation method based on the current situation of the prior art, especially for the problems of slow response speed and poor reversibility in the existing optical hydrogen peroxide sensor, especially fast response and complete reversibility Preparation method of optical hydrogen peroxide sensor

Method used

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  • Quick-response and completely reversible optical hydrogen peroxide sensor and preparation method thereof
  • Quick-response and completely reversible optical hydrogen peroxide sensor and preparation method thereof
  • Quick-response and completely reversible optical hydrogen peroxide sensor and preparation method thereof

Examples

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Effect test

Embodiment 1

[0032] Mix 2.0 mg / mL tetrahydrofuran dye of phosphorescent oxygen probe tetrakis(pentafluorophenyl) porphyrin platinum (II) (PtTFPP) and oxygen sensing material 5% D4 Hydrogel matrix according to the volume ratio of 1:4 to obtain a red color Oxygen sensing membrane solution. Spread the oxygen sensing membrane solution on the high-temperature-resistant polyester film (PET film) with a doctor blade, the thickness is 125 μm, and after drying at room temperature, the thickness of the membrane is 3 μm;

[0033] Dissolve 12mmol of tetraethyl orthosilicate (TEOS) in a mixed solution of cyclohexane (30mL) and 1-pentanol (1.5mL), and then add 1.0g of cetylpyridine hydrate and 0.6g of urea Deionized aqueous solution, stirred and mixed to obtain a white suspension, stirred and reacted in an oil bath at 25°C for 30 minutes, and then hydrothermally reacted at 120°C for 4h. After naturally cooling to room temperature, the prepared product was centrifuged, washed, dried in air at room tempe...

Embodiment 2

[0038] Mix 2.0 mg / mL tetrahydrofuran dye of phosphorescent oxygen probe tetrakis(pentafluorophenyl) porphyrin platinum (II) (PtTFPP) and oxygen sensing material 5% D4 Hydrogel matrix according to the volume ratio of 1:4 to obtain a red color Oxygen sensing membrane solution. Spread the oxygen sensing membrane solution on the high-temperature-resistant polyester film (PET film) with a doctor blade, the thickness is 125 μm, and after drying at room temperature, the thickness of the membrane is 3 μm;

[0039] Prepare mesoporous SiO2 nanoparticles KCC-1 with large specific surface area, and then modify PEI on its surface. 200 mg of the prepared KCC-1-PEI was dispersed in 25 mL of glutaraldehyde aqueous solution (1%), stirred at room temperature for 20 minutes, separated by centrifugation, and washed three times with 0.01M pH 7.4 phosphate buffer solution. The obtained nanoparticles were then dispersed in 15 mL of 0.5 mg mL -1 A 0.01M pH 7.4 phosphate buffer solution of horseradi...

Embodiment 3

[0043] 2.0 mg / mL of the phosphorescent oxygen probe tris(4,7-phenyl-1,10-phenanthrene) ruthenium (II) bis(ester) (Ru(dpp) 3 (ClO 4 ) 2 ) tetrahydrofuran solution and oxygen sensing material 5% D4 Hydrogel matrix were mixed according to the volume ratio of 1:4 to obtain an oxygen sensing membrane solution. Coat the oxygen sensing membrane solution on the PET film with a doctor blade, the thickness is 1.0 mm, and after drying at room temperature, the thickness of the film is 24 μm;

[0044] Add 3.0g of cetyltrimethylammonium bromide into a 100mL round-bottomed flask, add 60mL of deionized water and 0.5mL of triethanolamine aqueous solution (triethanolamine / water (w / w)=1 / 3), and place in After stirring and dissolving in an oil bath at 60°C at a speed of 1000 rpm for 30 minutes, 16 mL of cyclohexane was added, and the mixture was stirred for 5 minutes, and then 4 mL of TEOS was added rapidly, and stirred for 6 hours. After the reaction is complete, pour the solution into the sa...

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Abstract

The invention belongs to the technical field of measurement and analysis, and relates to a hydrogen peroxide sensor and a preparation method thereof, in particular to a preparation method of a quick-response and completely reversible optical hydrogen peroxide sensor. The method comprises the steps that firstly, a coating sensitive to oxygen is laid on a substrate, then a catalyst capable of catalytically decomposing hydrogen peroxide into water and oxygen is prepared through a nanotechnology and enriched at a high concentration, and then the catalyst is laid in a sensing film with oxygen permeability to prepare a hydrogen peroxide catalytic decomposition coating; finally, real-time online monitoring of hydrogen peroxide is indirectly achieved by detecting the content of oxygen generated bycatalytic decomposition of hydrogen peroxide, and the optical hydrogen peroxide sensor with quick response and complete reversibility is prepared. The sensor prepared by the invention has the characteristics of high sensitivity, good stability, high accuracy, quick response, complete reversibility and the like, and can be used for real-time monitoring of hydrogen peroxide in industrial and agricultural production.

Description

technical field [0001] The invention belongs to the technical field of measurement and analysis, and relates to a hydrogen peroxide sensor and a preparation method, in particular to a fast-response and fully reversible optical hydrogen peroxide sensor preparation method. Background technique [0002] The prior art discloses that hydrogen peroxide has been widely used in fields such as papermaking, textile industry, chemical manufacturing, environmental protection, and electronic industry as an important active oxygen substance; In daily necessities such as saliva, wound antibacterial agent, cleaning agent and mildew remover, it has the functions of cleaning, deodorizing and bleaching; however, studies have shown that excessive hydrogen peroxide is very harmful, not only causing environmental pollution, but also destroying ecology system, and may also lead to human diseases such as cancer and senile dementia. According to statistics, there are millions of tons of hydrogen pe...

Claims

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Application Information

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IPC IPC(8): G01N21/64B82Y15/00B82Y30/00
CPCG01N21/643B82Y15/00B82Y30/00G01N2021/6432
Inventor 王旭东
Owner 上海烁谱科技有限公司
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