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Flexible ZnO nanocrystalline composite carbon fiber and oxidized graphene glucose detector and a preparation method thereof

A nanocrystalline composite and carbon fiber technology, applied in the direction of material electrochemical variables, etc., to achieve the effect of short time, uniform size and simple structure

Inactive Publication Date: 2017-07-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no glucose detector based on graphene oxide on the market

Method used

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  • Flexible ZnO nanocrystalline composite carbon fiber and oxidized graphene glucose detector and a preparation method thereof
  • Flexible ZnO nanocrystalline composite carbon fiber and oxidized graphene glucose detector and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Soak a circular carbon fiber sheet with a diameter of 1 cm in 20 mL of a graphene oxide aqueous solution with a concentration of 1 g / L for 30 minutes, then take out the carbon fiber and dry it in an oven at 60°C for 2 hours to obtain sample A.

[0021] 2) Add 0.2357g of Zn(AC) 2 2H 2 O was dissolved in 50 mL DMF solution and sonicated for 30 min to obtain solution B.

[0022] 3) Sample A was added into solution B, and then the solution was heated to 95 °C and kept for 5 hours to the flexible ZnO nanocrystalline glucose sensor.

[0023] From figure 1 It can be seen that the flexible ZnO nanocrystalline composite carbon fiber and graphene oxide glucose detector are based on carbon fiber, in which the carbon tubes still maintain the original shape, and a large number of gaps between the carbon tubes can provide a large number of ZnO nanocrystals for attachment and growth. .

[0024] From figure 2 It can be seen that the diameter of ZnO nanocrystals grown on the fl...

Embodiment 2

[0027] 1) A circular carbon fiber sheet with a diameter of 3 cm was soaked in 25 mL of a graphene oxide aqueous solution with a concentration of 1.2 g / L for 40 minutes, and then the carbon fiber was taken out and dried in an oven at 60 ° C for 2 hours to obtain sample A.

[0028] 2) Add 0.2320g of Zn(AC) 2 2H 2 O was dissolved in 50 mL DMF solution and sonicated for 30 min to obtain solution B.

[0029] 3) Sample A was added into solution B, and then the solution was heated to 95 °C and kept for 5 hours to the flexible ZnO nanocrystalline glucose sensor.

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Abstract

The invention discloses a flexible ZnO nanocrystal composite carbon fiber and graphene oxide glucose detector and a preparation method thereof. The sensor has carbon fiber, graphene oxide and ZnO nanocrystal layers sequentially from bottom to top. The preparation method is as follows: first prepare carbon fiber composite graphene oxide as a substrate, and then grow ZnO nanocrystals on it at a certain temperature to self-assemble into flexible ZnO nanocrystal composite carbon fibers and graphene oxide glucose detectors. Compared with traditional glucose detectors, this method has high response sensitivity, fast response time, flexibility, simple structure and low preparation cost, and has important application value in biology, medical treatment and some special fields.

Description

technical field [0001] The invention relates to a flexible ZnO nanocrystalline composite carbon fiber and graphene oxide glucose detector and a preparation method thereof, belonging to the technical field of semiconductor devices. Background technique [0002] A sensor is a class of devices that can recognize physical, chemical or biological changes and convert them into measurable signals. Biosensors are sensors specially used to detect biochemical small molecules, proteins, DNA, cells and even tissues. Biosensors are sensitive to biological substances and convert their concentrations into electrical signals for detection. At present, there is no glucose detector based on graphene oxide on the market. [0003] ZnO is an important metal oxide semiconductor material with a band gap of 3.2eV at room temperature, simple synthesis steps, high catalytic activity, good chemical stability in solution and strong adaptability to substrate materials , so it is suitable as a materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/32
CPCG01N27/30G01N27/32
Inventor 黄靖云黄辉耀马晔叶志镇
Owner ZHEJIANG UNIV
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