Flexible gas sensor based on Zr-TiO2-coated CuO core-shell structure nanofiber membrane and application of flexible gas sensor to detection of NO2 gas
By preparing the Zr–TiO2@CuO core-shell structure nanofiber membrane, the shortcomings of flexible MOS gas sensors in terms of flexibility and breathability are solved, and a self-supported flexible gas sensor with high sensitivity and high temperature resistance is achieved, which is suitable for wearable devices and high temperature environments.
CN120425513APending Publication Date: 2025-08-05SHAANXI NORMAL UNIV
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Patent Information
- Application Number
- CN202510551878.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2025-08-05
AI Technical Summary
Technical Problem
The existing flexible MOS gas sensors have no significant effect in improving material flexibility and breathability, and there is no literature report on the entirely inorganic flexible MOS gas sensor without substrate.
Method used
A flexible Zr-TiO2@CuO core-shell structure nanofiber membrane was prepared by Zr4+ ion doping combined with electrospinning technology, and CuO was loaded on it by MOF derivatization to form a core-shell heterojunction nanofiber membrane to prepare a self-supported flexible gas sensor.
Benefits of technology
It achieves high sensitivity, high selectivity and good flexibility and stability, has excellent breathability and high temperature resistance, and is suitable for wearable devices and high temperature fire monitoring.
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Abstract
The invention discloses a flexible gas sensor based on a Zr-TiO2 coated CuO core-shell structure nanofiber membrane and application of the flexible gas sensor to detection of NO2 gas, a flexible Zr-TiO2 nanofiber membrane is prepared by adopting a Zr < 4 + > ion doped electrostatic spinning method, then CuO is loaded into the flexible Zr-TiO2 nanofiber membrane by adopting a metal organic framework (MOF) derivation method, and the flexible gas sensor is prepared. The Zr-TiO2 coated CuO core-shell heterostructure nanofiber membrane which has a flexible self-supporting characteristic and is free of a substrate is prepared. The Zr-TiO2-coated CuO core-shell heterojunction nanofiber membrane prepared by the method has the characteristics of high flexibility, high breathability, high temperature resistance and self-supporting, and a sensor prepared on the basis of the Zr-TiO2-coated CuO core-shell heterojunction nanofiber membrane has high sensitivity, high selectivity and high stability when being used for NO2 gas detection. The substrate-free all-inorganic flexible sensor disclosed by the invention shows relatively good application potentials in various flexible application fields, including detection of NO2 at room temperature and detection of NO2 in a high-temperature fire-fighting environment.
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