Palladium sulfide nanoparticle gas-sensitive material grown by microwave hydrothermal method as well as preparation method and application of palladium sulfide nanoparticle gas-sensitive material

The growth of palladium sulfide nanoparticles by microwave hydrothermal method, combined with substrate material, and formed gas-sensitive materials, solving the problem of insufficient responsiveness of existing NO2 gas sensors at room temperature, achieving high sensitivity and selective NO2 detection, meeting the needs of fast response and low cost.

CN119643657AActive Publication Date: 2025-03-18KUNMING UNIV OF SCI & TECH
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Patent Information

Application Number
CN202411827337.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-12
Publication Date
2025-03-18
Estimated Expiration
2044-12-12

AI Technical Summary

Technical Problem

The existing NO2 gas sensors need to be effective at higher operating temperatures, and the response, selectivity and stability of NO2 sensors at room temperature are insufficient, making it difficult to meet the needs of fast response and high sensitivity.

Method used

Palladium sulfide nanoparticles are grown by microwave hydrothermal method as gas-sensitive materials. By chemical reactions of chloropalladium acid and thiourea under microwave hydrothermal conditions, palladium sulfide nanoparticles with high specific surface area and surfactant sites are generated, and combined with the substrate material to form a gas-sensitive film.

Benefits of technology

It realizes high sensitivity and selective detection of NO2 gas at room temperature, avoids high temperature operation, saves energy, and has simple reaction conditions, simple operation and low cost.

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Abstract

The invention discloses a palladium sulfide nanoparticle gas-sensitive material grown by a microwave hydrothermal method as well as a preparation method and application thereof, and belongs to the technical field of nano materials and electronic devices. The palladium sulfide nanoparticle gas sensitive material consists of a substrate layer with an electrode and a gas sensitive layer, wherein the gas sensitive layer is prepared from palladium sulfide nanoparticles. The specific preparation method comprises the following steps: taking chloropalladic acid and thiourea as precursors, carrying out chemical reaction under a microwave hydrothermal condition to generate palladium sulfide nanoparticles, mixing the palladium sulfide nanoparticles with ethanol, and then coating a pretreated substrate material with the mixture to form a gas sensitive film, so as to obtain the palladium sulfide nanoparticle gas sensitive material. The material has high gas sensitivity and selectivity, and can play a role in NO2 gas sensor application.
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