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Method for preparing graphene layer on sensor substrate surface

A sensor substrate and graphene layer technology, applied in the field of sensing materials, can solve the problems of low sensitivity and difficult desorption, and achieve the effects of high sensitivity, short desorption time and deep detection limit

Active Publication Date: 2021-05-18
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is, aiming at the above-mentioned defects of low sensitivity and difficult desorption in the prior art, to provide a sensor with high sensitivity and fast desorption to prepare graphene on the surface of the sensor substrate. layer method

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  • Method for preparing graphene layer on sensor substrate surface

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Embodiment Construction

[0023] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, in a method embodiment of preparing a graphene layer on the sensor substrate surface of the present invention, the method may further comprise the steps:

[0025] Step S11 makes the graphene layer with copper foil as the substrate, and forms a support film thereon: in this embodiment, the graphene layer obtained at last is thicker than the thickness of the common graphene layer, and adopts this embodiment The sensor whose graphene layer is generated by the method in the middle method has a greatly improved adsorption capacity for some special impurities contained in the air, and at the same time requires a shorter desorption time, which makes the sensor more sensitive. The interval between two measurements is shorter and the efficiency is higher. In terms of the preparation method, in this embodiment, a step-by-step pr...

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Abstract

The invention relates to a method for preparing a graphene layer on the surface of a sensor substrate, comprising the following steps: using copper foil as a substrate, preparing and obtaining a graphene layer by chemical vapor deposition, and forming a supporting film on it; removing excess graphite ene and support film, remove the substrate; place the unsupported film side of the graphene layer on the surface of the sensor substrate, make the two contact and heat treatment so that the graphene layer is combined on the surface of the substrate; remove Described support film, and clean described graphene layer surface; Repeat above-mentioned steps, obtain another graphene layer with support film, and it is placed on the graphene layer on the sensor matrix surface that has been processed through above-mentioned steps; Again The supporting film is removed, and the two layers of graphene are bonded together through vacuum heat treatment. Implementing the method for preparing a graphene layer on the surface of a sensor substrate of the present invention has the following beneficial effects: the sensor has higher sensitivity and can desorb faster.

Description

technical field [0001] The invention relates to the field of sensing materials, more specifically, to a method for preparing a graphene layer on the surface of a sensor substrate. Background technique [0002] Gas sensors are commonly used to detect the presence of certain components in the air in their environment. The cause of air pollution is that there are various impurities in the air that are discharged into the air through different channels, so detecting whether there is a certain impurity or the amount of impurities in the air becomes an important indicator for judging whether the air is polluted and the degree of pollution; generally Speaking of, in the prior art, when the sensor is in the air containing a certain substance, one of its electrical parameters will change due to the existence of this substance, and this change is usually relatively small, so that the sensor will It has always been the direction of efforts in the field of sensors that the electrical p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/186C01B32/194G01N27/00
CPCG01N27/00
Inventor 房瑞阳高致慧李辉林伟豪贺威李玲
Owner SHENZHEN UNIV
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