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Preparation method of a three-dimensional graphene/silver nanoflower stretchable biosensor material

A biosensor and graphene technology, applied in biological testing, material inspection products, etc., can solve the problems of insufficient tensile stability, low physical enhancement, and low sensitivity, and achieve low defect peaks, high chemical adsorption, and high crystallinity quality effect

Active Publication Date: 2020-05-05
SHANDONG NORMAL UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] In order to solve the technical problems of low physical enhancement, low sensitivity, difficult stretching and insufficient stretching stability in current biosensors, an object of the present invention is to provide a three-dimensional graphene / silver nanoflower stretchable biosensor The preparation method of the material, in which the stretchable biosensor material combines three-dimensional graphene with silver nanoflowers, enhances the detection sensitivity, and prepares a stretchable hybrid structure

Method used

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  • Preparation method of a three-dimensional graphene/silver nanoflower stretchable biosensor material
  • Preparation method of a three-dimensional graphene/silver nanoflower stretchable biosensor material
  • Preparation method of a three-dimensional graphene/silver nanoflower stretchable biosensor material

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Embodiment 1

[0050] Graphene is grown on the three-dimensional substrate nickel foam to obtain a graphene / nickel particle hybrid structure, and finally a graphene / silver nanoflower hybrid structure, such as figure 1 The preparation roadmap includes the following preparation steps:

[0051] 1. Take nickel foam with a size of 8cm×8cm and place it in a tube furnace;

[0052] 2. Turn on the vacuum pump to pump the air pressure of the tube furnace to the ultimate vacuum state of 3×10 -6 Torr;

[0053] 3. Keep vacuum 3×10 -6 After Torr for 15 minutes (the effect of vacuum for 15 minutes is to remove impurities, air, etc. inside the quartz tube to ensure that the reaction chamber is clean), the air pressure of the quartz tube 3 is raised to 3 × 10 -3 Torr;

[0054] 4. Set the hydrogen flow meter to 100sccm, and inject hydrogen into the vacuum chamber;

[0055] 5. After the tube furnace temperature rises to 300°C, anneal at a constant temperature for 20 minutes;

[0056] 6. After the tube f...

Embodiment 2

[0078] Graphene is grown on the three-dimensional substrate copper foam to obtain a graphene / copper foam hybrid structure, and finally a graphene / silver nanoflower hybrid structure is obtained, such as figure 1 The preparation roadmap includes the following preparation steps:

[0079] 1. Take foam copper with a size of 8cm×8cm and place it in a tube furnace;

[0080] 2. Turn on the vacuum pump to pump the air pressure of the tube furnace to the limit vacuum state of 3×10 -6 Torr;

[0081] 3. Keep the vacuum state 3×10 -6 After Torr for 15 minutes (the effect of vacuum for 15 minutes is to remove impurities, air, etc. inside the quartz tube to ensure that the reaction chamber is clean), the air pressure of the quartz tube 3 is raised to 3 × 10 -3 Torr;

[0082] 4. Set the hydrogen flow meter to 100 sccm, inject hydrogen into the vacuum chamber;

[0083] 5. After the tube furnace temperature rises to 300°C, anneal at a constant temperature for 20 minutes;

[0084] 6. Afte...

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Abstract

The invention discloses a preparation method of a three dimensional graphene / silver nanoflower stretchable biosensor material. The method comprises the following steps: (1) three dimensional graphene is prepared on a foam metal substrate, in order to obtain a graphene / foam metal composite material; (2) the graphene / foam metal composite material is immersed in an etching solution, after the foam metal substrate is dissolved, a stamping method is used for fishing the three dimensional graphene material out from the etching solution; (3) the elastic substrate is prestretched at a direction or orthotropically stretched at two directions, the substrate is recovered to an original state slowly, and a stretchable three dimensional graphene structure is obtained; (4) silver nanoflowers are grown on the elastic substrate of the stretchable graphene structure obtained in the step (3).

Description

technical field [0001] The invention relates to a preparation method of a stretchable biosensor material, in particular to a preparation method and application of a three-dimensional graphene / silver nanoflower stretchable biosensor material, and belongs to the technical field of new materials. Background technique [0002] For today's biosensors, high sensitivity, high stability, and high efficiency are crucial. The highly sensitive in situ SERS technology can detect environmental and agricultural product pollution and the canceration caused by it in real time and quickly, which plays an important role in pollution control and medical diagnosis and treatment. At present, the progress of related research is relatively slow, mainly because it is difficult to prepare highly sensitive stretchable materials. [0003] The research on stretchable biosensors plays an important role in environmental monitoring, pollution control, medical diagnosis and treatment, etc., and has become...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/48
CPCG01N33/48
Inventor 杨诚王均东张萌徐媛媛潘萧萧欧佳瑜满宝元
Owner SHANDONG NORMAL UNIV
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