Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of molybdenum disulfide/indium hydroxide composite gas sensitive sensing material and its preparation method and application

A technology of gas-sensing sensing material, indium hydroxide, which is applied in the field of molybdenum disulfide/indium hydroxide composite gas-sensing sensing material and its preparation and application, and can solve the problems of high working temperature requirement, long recovery time, poor selectivity, etc. , to achieve the effects of highlighting selectivity, preventing aggregation, and helping adsorption and desorption

Active Publication Date: 2019-03-26
HEILONGJIANG UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is in order to solve existing detection NO x Sensitive materials have the problems of high working temperature requirements, low sensitivity, poor selectivity, and long recovery time. A molybdenum disulfide / indium hydroxide composite gas-sensitive sensing material and its preparation method and application are proposed;

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of molybdenum disulfide/indium hydroxide composite gas sensitive sensing material and its preparation method and application
  • A kind of molybdenum disulfide/indium hydroxide composite gas sensitive sensing material and its preparation method and application
  • A kind of molybdenum disulfide/indium hydroxide composite gas sensitive sensing material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0041] Specific embodiment one: this embodiment is a molybdenum disulfide / indium hydroxide composite gas sensor material, the composite gas sensor material is made of MoS 2 And indium salt; the MoS 2 The molar ratio with indium salt is (1~4):(0.5~3).

[0042] This embodiment has the following beneficial effects:

[0043] 1. MoS prepared in this embodiment 2 / In(OH) 3 Composite material, MoS 2 Laminated structure, In(OH) 3 Polycrystalline substance with thin crystal particles, MoS 2 It has a lamellar structure, which not only can effectively prevent aggregation, but also adds more contact points. In(OH) 3 The nanoparticles are dispersed on the nanosheets, which increase the catalytic sites of the gas, help the gas absorption and desorption, and improve the sensitivity of the composite material;

[0044] 2. MoS prepared by this embodiment 2 / In(OH) 3 The gas sensor made of composite material as a sensitive material has an effect on NO in the air. x No heating is required during the dete...

specific Embodiment approach 2

[0048] Specific embodiment two: this embodiment is different from specific embodiment one in that the particle size of indium hydroxide in the molybdenum disulfide / indium hydroxide composite gas sensing material is 5-10 nm. The other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0049] Specific embodiment 3: This embodiment is a method for preparing a molybdenum disulfide / indium hydroxide composite gas-sensitive sensing material, and the preparation method is carried out in the following steps:

[0050] 1. Weigh molybdenum-containing material and sulfur-containing material as raw materials; the molybdenum-containing material is Na 2 MoO 4 ·2H 2 O or (NH 4 ) 2 MoO 4 ·2H 2 O; The sulfur-containing material is CH 4 N 2 S;

[0051] The mass ratio of the molybdenum-containing material to the sulfur-containing material is (0.5-1.45): (0.3-1.90);

[0052] 2. Dissolve the weighed raw materials in step 1 in deionized water, then ultrasonically treat them for 0.5-1h, and finally stir for 0.5-3h to obtain a mixed solution;

[0053] The volume ratio of the mass of the raw materials weighed in the step 1 to the volume of deionized water is (0.85~3.35) g: (50~70) ml;

[0054] 3. Place the mixed solution obtained in step 2 in a hydrothermal kettle, conduct a hydrothermal reac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
lengthaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention provides a molybdenum disulfide / indium hydroxide composite air-sensitive sensing material as well as a preparation method and application thereof. According to the molybdenum disulfide / indium hydroxide composite air-sensitive sensing material, the problems that an existing sensitive material for detecting NOx is high in working temperature requirement, low in sensitivity, poor in selectivity and long in recovery time are solved. The composite air-sensitive sensing material is prepared from MoS2 and indium salt. The preparation method comprises the following steps: (1) weighing the raw materials; (2) dissolving the weighed raw materials, so as to obtain mixed liquid; (3) carrying out hydrothermal reaction on the mixed liquid; (4) washing solid products; (5) preparing MoS2 suspension liquid; (6) preparing reaction liquid; (7) carrying out hydrothermal synthesis reaction on the reaction liquid; and (8) sequentially washing and drying solid products. The composite air-sensitive sensing material used as a sensitive material for preparing air-sensitive elements. The composite air-sensitive sensing material is high in sensitivity, outstanding in selectivity and low in cost. The composite air-sensitive sensing material is suitable for being applied to the preparation of air-sensitive sensing materials and air-sensitive elements.

Description

Technical field [0001] The invention relates to a gas-sensitive sensing material, a preparation method and an application. Background technique [0002] With the development and progress of science and technology, the importance of sustainable development has become more prominent. In people's daily life, the monitoring of toxic and harmful gases in the environment has attracted much attention. Common toxic and harmful gases in the air such as NO x , H 2 S, SO 2 , NH 3 , CO, etc., where NO x It is one of the main gaseous pollutants in the atmosphere. NO x Is the source of environmental pollution, NO x Can cause acid rain and photochemical smog, causing serious diseases to humans, especially NO x It easily binds to hemoglobin in human blood, and also stimulates the lungs, causing many serious diseases. Have explored a lot of NO x Gas sensor, such as SnO 2 , ZnO, TiO 2 , In 2 O 3 And conductive polymers. To some extent, these gas sensors can detect NO well x , But they require hi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30C01G39/06C01G15/00
CPCC01G15/00C01G39/06C01P2002/72C01P2004/04C01P2004/45C01P2004/80C01P2006/12G01N27/30
Inventor 史克英伊克拉姆李丽
Owner HEILONGJIANG UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com