MXene/rGO complex 3D structure based high-sensitivity sensor

A three-dimensional structure, sensor technology

Active Publication Date: 2018-09-04
HUAZHONG UNIV OF SCI & TECH
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[0004] Graphene is ultra-light and super-elastic, which is very suitable for the field of pr

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  • MXene/rGO complex 3D structure based high-sensitivity sensor
  • MXene/rGO complex 3D structure based high-sensitivity sensor
  • MXene/rGO complex 3D structure based high-sensitivity sensor

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[0030] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] The present invention adopts MX / rGO composite aerogel as the active material of the sensor, and preferably the polyimide metal interdigital electrode is the device electrode to perform the electrical signal response to a series of external pressures.

[0032] The MXene in the present invention can use HCl and LiF to selectively etch the A layer in the precursor MAX (the precursor MAX is a type of...

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Abstract

The invention discloses an MXene/rGO complex 3D structure based high-sensitivity sensor. The sensor is characterized that an MXene/rGO complex 3D structure serves as a sensing active part of the sensor; and in the MXene/rGO complex 3D structure, MXene is dispersed in reduced oxidized graphene (rGO). The composition and structure of the sensing active part in a sensor piezoresistive type pressure sensor are improved, the MXene/rGO composite structure (especially MXene/rGO composite aerogel) of the 3D structure is introduced, the MXene nanosheets of smaller sizes are dispersed in the oxidized graphene GO nanosheet colloidal solution, and finally the MXene/rGO complex 3D structure in which MXene is dispersed in reduced oxidized graphene (rGO) is formed; and the sensing sensitivity of the piezoresistive sensor can be improved greatly.

Description

technical field [0001] The invention belongs to the field of nanomaterials, and more specifically, relates to a highly sensitive sensor based on MXene / rGO composite three-dimensional structure, which uses MXene / rGO (i.e. MXene / reduced graphene oxide, referred to as MX / rGO) airgel The pore size, hole and hole distance are extremely adjustable to macroscopically control the electrical contact of the device, so as to perform sensing (such as pressure sensing, etc.). Background technique [0002] In the past decade, two-dimensional materials have attracted extensive attention due to their unique electrical, mechanical, and optical properties and their wide range of applications in many fields. Two-dimensional materials that have been synthesized so far include graphene, molybdenum sulfide, boron carbide, black phosphorus, antimony tin, etc. In 2011, Yury Gogotsi prepared a new type of transition metal carbide—MXene by chemical etching. It is obtained by etching the parent mater...

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Application Information

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IPC IPC(8): G01L1/18B82Y30/00C01B32/182
CPCB82Y30/00C01B32/182G01L1/18
Inventor 高义华马亚楠刘逆霜
Owner HUAZHONG UNIV OF SCI & TECH
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