Planar humidity-ammonia gas sensor based on alkalized organ-like MXene sensitive material and preparation method thereof

A technology of ammonia sensor and sensitive material, which is applied in the direction of material resistance, can solve the problems of organ-like structure instability, sloshing and dispersion, etc., and achieve humidity-sensing and ammonia-sensing performance improvement, low working temperature, and low power consumption Effect
CN109799267AActive Publication Date: 2019-05-24JILIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JILIN UNIV
Publication Date
2019-05-24

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Abstract

The invention belongs to the technical field of gas-humidity sensitive sensors and relates to a planar humidity-ammonia gas sensor based on alkalized organ-like MXene (Ti3C2Tx, with T representing surface basic group terminals and x valuing from a ratio of surface terminals) sensitive material and preparation method thereof. The planar humidity-ammonia gas sensor is composed of an Al2O3 ceramic base plate with an Au / Ni interdigital electrode and an alkalized organ-like MXene (Ti3C2Tx) sensitive material applied evenly to the interdigital electrode and the ceramic base plate by dripping. Basedon the organ-like MXene material, surface F terminals are removed and sodium ions are inserted by alkalizing the organ-like MXene material. pre-alkalization and post-alkalization gas-humidity sensitivities are compared to obtain a device having better humidity and ammonia gas sensitivities. The sensor prepared herein has MXene gas-humidity sensitive response which is the highest up to now, and hasgood selectivity.
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Description

technical field

[0001] The invention belongs to the technical field of gas and humidity sensors, and in particular relates to a planar humidity and NH 3 A sensor and a preparation method thereof are mainly used for detecting ambient humidity and ammonia gas. Background technique

[0002] The Internet of Things (IoT) is one of the fastest growing information technologies in the world. As the front end of information collection, the importance and demand of sensors are increasingly prominent. Currently, there are various types of sensors for environmental monitoring and physiological detection. Among them, chemical gas sensors based on special detection mechanisms are receiving more and more attention in monitoring toxic and harmful gases in the atmospheric environment and monitoring respiratory marker gases in medical diagnosis and treatment. Therefore, as an important information acquisition device developed in the era of big data, gas sensors have broad application prosp...

Claims

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