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Tungsten disulfide formaldehyde gas-sensitive sensor preparation method and application thereof in vehicle microenvironment detection

A gas sensor, tungsten disulfide technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of high working temperature, high price, cumbersome operation, etc.

Active Publication Date: 2019-12-06
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0004] At present, the detection of target gases mainly includes gas chromatography, infrared spectroscopy, electrochemical sensor method, photoacoustic spectroscopy and other methods, and these methods have problems such as complex system structure, cumbersome operation, high price, and high power consumption. , many disadvantages such as high working temperature

Method used

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  • Tungsten disulfide formaldehyde gas-sensitive sensor preparation method and application thereof in vehicle microenvironment detection
  • Tungsten disulfide formaldehyde gas-sensitive sensor preparation method and application thereof in vehicle microenvironment detection
  • Tungsten disulfide formaldehyde gas-sensitive sensor preparation method and application thereof in vehicle microenvironment detection

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Embodiment

[0088] A method for constructing a tungsten disulfide-based formaldehyde gas sensor, wherein the preparation process includes:

[0089] ① Using the epoxy resin (FR4 for short) substrate as the substrate, a gas sensor with a metal finger copper-nickel alloy electrode is prepared on the surface of the substrate;

[0090] ②Synthesis of nano-tungsten disulfide and Ni-In by hydrothermal method 2 O 3 Materials: Sodium tungstate and thioacetamide are used as tungsten source and sulfur source, water is used as solvent, acidic environment, 200 ℃ hydrothermal reaction to prepare tungsten disulfide; indium nitrate and nickel chloride are used as indium source and nickel source , using water as a solvent, hydrothermal reaction at 120°C, and calcined at 500°C to obtain Ni-In 2 O 3 ;

[0091] ③The composite thin-film sensor for detecting gas components in the microenvironment of the vehicle was prepared by layer-by-layer self-assembly (LbL) process.

[0092] Further, in step ①, the int...

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Abstract

The invention relates to a tungsten disulfide formaldehyde gas-sensitive sensor preparation method and application thereof in vehicle microenvironment detection. By constructing a tungsten disulfide-based Ni-In2O3 / WS2 nano composite gas-sensitive sensor and constructing an in-vehicle microenvironment gas component detection sensing array, component recognition and concentration prediction for thein-vehicle microenvironment are realized through a PSO-BP neural network, so, the method and the application thereof have practical significance for guaranteeing body health and safety of drivers andpassengers.

Description

technical field [0001] The invention relates to the technical field of gas sensor detection, in particular to a preparation method of a tungsten disulfide-based formaldehyde gas sensor and its application in vehicle-mounted microenvironment detection. Background technique [0002] In recent years, with the substantial increase in the disposable income of Chinese residents and the continuous acceleration of urbanization, family cars have gradually entered thousands of households; due to the increasing demand for family cars, the reduction of car prices, and the strengthening of consumer purchasing power, etc., leading to The consumer market for automobiles is gradually expanding. According to statistics, modern people spend more than 1.5 hours in the car on average every day, and the pollution in the car has become an important factor affecting people's health. The World Health Organization (WHO) has clearly listed the problem of air pollution in cars together with high bloo...

Claims

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Application Information

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IPC IPC(8): G01N27/12
CPCG01N27/127
Inventor 张冬至曹玉华王兴伟吴君峰薛庆忠
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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