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In-situ spectrum analysis pool for gas-sensitive sensing exploration and applications

An in-situ spectroscopy and gas-sensing sensing technology, applied in the field of in-situ spectroscopy analysis, can solve problems such as the large influence of gas sensing mechanism analysis, and achieve the effects of flexible probe connection, precise electrical detection, and convenient atmosphere control

Inactive Publication Date: 2021-12-31
QUZHOU RES INST OF ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an in-situ spectral analysis cell for gas sensing exploration and its application in view of the deficiency that the prior art cannot obtain electrical parameters and spectral analysis at the same time and has a great influence on the analysis of the gas sensing mechanism

Method used

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  • In-situ spectrum analysis pool for gas-sensitive sensing exploration and applications
  • In-situ spectrum analysis pool for gas-sensitive sensing exploration and applications

Examples

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Embodiment 1

[0056] Take the study of gas sensing properties of graphene materials as an example.

[0057] Use a tablet press to press the graphene into flakes with a thickness of 1 mm and a circle with a diameter of 6 mm. Place the pressed graphene flake sample in the center of the sample temperature control platform 3 and use the electrical probe 12 to contact the sample. In this embodiment, four probes are selected and distributed equidistantly around the sample temperature control platform 3, and the distance between the two probes at opposite positions is 4 mm. After loading the sample, fix the top cover 2 of the chamber with screws to ensure good airtightness in the cavity of the in-situ cell, fix the in-situ cell in the diffuse reflectance accessory, and place it inside the infrared spectrometer. The inlet pipeline of the in-situ pool is connected to the gas cylinder through the gas mass flow controller integrated with the gas distribution device, and the outlet pipeline of the in-s...

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Abstract

The invention discloses an in-situ spectrum analysis pool for gas-sensitive sensing exploration and applications, wherein the in-situ spectrum analysis pool is suitable for in-situ spectrum analysis of equipment such as an infrared spectrometer and a micro-Raman spectrometer, an optical window is arranged at the top of a cavity, and a sealing ring is arranged between a cavity top cover and a bottom in-situ pool main body; a sample temperature control table containing a temperature control element and a temperature measuring element is arranged in the closed in-situ spectrum analysis pool, and the height of the sample temperature control table can be adjusted; a sample test area is arranged on the sample temperature control table, and a plurality of electrical probes are arranged around the sample test area and used for measuring the electrical characteristics of a sample to be tested; the closed in-situ spectrum analysis pool is provided with a plurality of gas inlets and outlets and is used for vacuumizing treatment, and after various gases are mixed according to a specific proportion through a gas distributor, the gases are introduced and discharged. According to the invention, the sample to be measured is placed in the in-situ pool, gas entering the cavity of the in-situ pool through the gas guide tube skims over the surface of the sample, spectral information in the gas-solid reaction process can be collected in situ, and the electrical characteristics of the gas sensor are measured.

Description

technical field [0001] The invention belongs to the technical field of in-situ spectral analysis, and in particular relates to an in-situ spectral analysis cell for gas sensing exploration and its application. Background technique [0002] A gas sensor is a converter that converts a certain gas volume fraction into a corresponding electrical signal. It can be used to identify gas types and detect gas concentrations. Gas sensors can be used for real-time detection of flammable, explosive, and toxic gases. It has a wide range of applications in environmental monitoring, medical diagnosis, national defense and military and other fields. In order to effectively prevent the safety problems caused by gas leakage, people have put forward higher requirements for the detection accuracy, selectivity, and operational reliability of gas sensors. Gas-sensing characteristics, which pose new challenges to the construction of gas-sensing testing and gas-sensing material research and develo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/03G01N21/3504G01N21/65G01N30/02G01N30/72G01N27/00G01N27/12
CPCG01N21/0332G01N21/3504G01N21/65G01N30/02G01N30/72G01N27/00G01N27/12G01N2021/0389G01N2030/025
Inventor 王青月林嘉河程烨
Owner QUZHOU RES INST OF ZHEJIANG UNIV
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