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Preparation method of hydrogen peroxide non-enzymatic sensor based on laser-induced graphene-precious metal nanocomposite

A nanocomposite, laser-induced technology, applied in the direction of instruments, scientific instruments, material excitation analysis, etc., can solve the problems of affecting catalyst performance and cumbersome steps, and achieve the effect of low material cost, broad application prospects, and simple manufacturing process

Inactive Publication Date: 2019-02-01
DALIAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steps of this method are cumbersome, and the deposited noble metal particles are still easy to locally aggregate into other structural substances, such as dendritic nano-deposits, which affect the performance of the catalyst.

Method used

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  • Preparation method of hydrogen peroxide non-enzymatic sensor based on laser-induced graphene-precious metal nanocomposite
  • Preparation method of hydrogen peroxide non-enzymatic sensor based on laser-induced graphene-precious metal nanocomposite
  • Preparation method of hydrogen peroxide non-enzymatic sensor based on laser-induced graphene-precious metal nanocomposite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Use CorelDRAW software to design electrode patterns according to actual needs;

[0026] (2) According to the designed electrode pattern, use a high-intensity laser beam to engrave or burn on the surface of a 25 μm polyimide film to form a multi-layer graphene foam structure, and remove the remaining material of the polyimide film, which is patterning laser-induced graphene;

[0027] (3) Synthesis of laser-induced graphene-platinum nanocomposites: move the laser-induced graphene into a vacuum magnetron sputtering device for platinum sputtering with a thickness of 10nm to manufacture platinum-laser-induced graphene nanocomposites; The sputtering process parameters are: sputtering pressure 0.5Pa, sputtering power 30W, and sputtering temperature 20°C.

[0028] (4) Using the laser-induced graphene-platinum nanocomposite as the working electrode, together with the auxiliary electrode and the reference electrode, an electrochemical sensor for hydrogen peroxide is formed. ...

Embodiment 2

[0045] (1) Design the electrode pattern with CorelDRAW software;

[0046] (2) According to the designed electrode pattern, use a high-intensity laser beam to engrave or burn on the surface of a 50 μm polyimide film to form a multi-layer graphene foam structure, and remove the remaining material of the polyimide film, which is patterned Laser-induced graphene;

[0047] (3) Synthesis of laser-induced graphene-gold nanocomposites: move the laser-induced graphene into a vacuum magnetron sputtering device for gold sputtering with a thickness of 15nm to manufacture gold-laser-induced graphene nanocomposites; The sputtering process parameters are: sputtering pressure 0.6Pa, sputtering power 35W, sputtering temperature 25°C.

[0048] (4) Using the laser-induced graphene-gold nanocomposite as the working electrode, together with the auxiliary electrode and the reference electrode, an electrochemical sensor for hydrogen peroxide was formed.

[0049] Specifically, step (3) preparation ...

Embodiment 3

[0051] (1) Design the electrode pattern with CorelDRAW software;

[0052] (2) According to the designed electrode pattern, use a high-intensity laser beam to engrave or burn on the surface of the 280 μm polyimide film to form a multi-layer graphene foam structure, and remove the remaining material of the polyimide film, which is patterned Laser-induced graphene;

[0053] (3) Synthesis of laser-induced graphene-silver nanocomposites: move the laser-induced graphene into a vacuum magnetron sputtering device for silver sputtering with a thickness of 25nm to manufacture laser-induced graphene-silver nanocomposites; The sputtering process parameters are: sputtering pressure 0.7Pa, sputtering power 40W, sputtering temperature 30°C.

[0054] (4) Using the laser-induced graphene-silver nanocomposite as the working electrode, together with the auxiliary electrode and the reference electrode, an electrochemical sensor for hydrogen peroxide is formed.

[0055] Specifically, step (3) pr...

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Abstract

The invention discloses a preparation method of a hydrogen peroxide non-enzymatic sensor based on a laser-induced graphene-precious metal nanocomposite, and belongs to the technical fields of electrochemical sensors and novel nano-functional materials. The preparation method comprises steps of: first, removing the remaining material of the polyimide film after engraving or cauterizing the surfaceof a polyimide film with high intensity laser beams to obtain patterned laser-induced graphene; next, transferring the laser-induced graphene into a vacuum magnetron sputtering device for sputtering of a precious metal to obtain a laser-induced graphene-precious metal nanocomposite; and finally, using the laser-induced graphene-precious metal nanocomposite as a working electrode to form a hydrogenperoxide electrochemical sensor together with an auxiliary electrode and a reference electrode. The sensor of the invention can realize rapid and sensitive detection of hydrogen peroxide in an aqueous solution containing a trace amount of hydrogen peroxide. The material cost is low. The preparation process is simple. The sensor has a very broad application prospect.

Description

technical field [0001] The invention belongs to the technical field of electrochemical sensors and novel nano functional materials, and relates to a hydrogen peroxide enzyme-free sensor based on a laser-induced graphene-noble metal nanocomposite and a preparation method thereof. Background technique [0002] The development of material science has brought opportunities for development in the field of electrochemical applications, and graphene materials are a typical representative of them. Graphene has potential applications in nanoelectronics, biosensing, batteries, nanocomposites, and supercapacitors due to its unique sheet nanostructure, good electrical conductivity, and large specific surface area. At present, graphene as a two-dimensional conductive carbon carrier supporting noble metal catalysts has become a research hotspot in the field of electrocatalysis. [0003] Hydrogen peroxide (H 2 o 2 ) is one of the most ubiquitous molecules in biological tissues and plays...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/327G01N21/63
CPCG01N27/3271G01N21/63
Inventor 孙长凯朱慧超张宇晗黄辉关水刘海龙张航与张驰孙品
Owner DALIAN UNIV OF TECH
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