Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-sensitivity and high-selectivity triethylamine gas-sensitive material and preparation method thereof

A high-selectivity, gas-sensing material technology, applied in the field of high-sensitivity, high-selectivity triethylamine gas-sensing materials and its preparation, can solve the problem of shedding, difficulty in controlling particle size and load coverage, and affecting the stability of gas-sensing performance To achieve high selectivity detection, solve poor selectivity, improve sensitivity and selectivity

Pending Publication Date: 2021-06-15
ANHUI UNIVERSITY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the synergistic sensitization mechanism of noble metal nanoparticles and porous nanostructures, it is possible to realize the selective recognition of triethylamine. Most of the conventional noble metal nanoparticles are loaded with post-chemical modification methods, which makes it easy to fall off the surface of oxide nano-sensitive materials. Moreover, particle size and load coverage are difficult to control, which affects the stability of gas sensing performance

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
  • High-sensitivity and high-selectivity triethylamine gas-sensitive material and preparation method thereof
  • High-sensitivity and high-selectivity triethylamine gas-sensitive material and preparation method thereof
  • High-sensitivity and high-selectivity triethylamine gas-sensitive material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of highly sensitive, highly selective triethylamine gas sensitive material, its preparation method comprises the steps:

[0027] (1) In the selenium powder solution (dissolving 0.4mmol Se powder in 20mL 80wt% hydrazine hydrate solution to obtain) that the concentration is 0.02mol / L, it is the zinc chloride aqueous solution (0.2mmol ZnCl hydrate) that concentration is 0.01mol / L 2 Dissolved in 20mL ultrapure water), stirred and mixed for 1 hour, and then hydrothermally reacted at 180°C for 12 hours. After the end, the precipitate was centrifugally washed with hydrazine hydrate 4 times to remove excess selenium powder, and then the precipitate was centrifugally washed with water until neutral. Finally, the precipitate was washed 2 times with ethanol to remove water to obtain white ZnSe 0.5N 2 h 4 Precursors of nanoribbons;

[0028] (2) 0.2mmol ZnSe·0.5N 2 h 4 The nanoribbons were dissolved in 90 mL of ethanol solution, and after stirring for 10 min, 200 μL of H ...

Embodiment 2

[0033] A kind of highly sensitive, highly selective triethylamine gas sensitive material, its preparation method comprises the steps:

[0034] (1) In the selenium powder solution (dissolving 0.4mmol Se powder in 20mL 80wt% hydrazine hydrate solution to obtain) that the concentration is 0.02mol / L, it is the zinc chloride aqueous solution (0.2mmol ZnCl hydrate) that concentration is 0.01mol / L 2 Dissolved in 20mL ultrapure water), stirred and mixed for 1 hour, and then hydrothermally reacted at 180°C for 12 hours. After the end, the precipitate was centrifugally washed with hydrazine hydrate 4 times to remove excess selenium powder, and then the precipitate was centrifugally washed with water until neutral. Finally, the precipitate was washed 2 times with ethanol to remove water to obtain white ZnSe 0.5N 2 h 4 Precursors of nanoribbons;

[0035] (2) 0.2mmol ZnSe·0.5N 2 h 4 The nanoribbons were dissolved in 90 mL of ethanol solution, and after stirring for 10 min, 100 μL of H ...

Embodiment 3

[0039] A kind of highly sensitive, highly selective triethylamine gas sensitive material, its preparation method comprises the steps:

[0040] (1) In the selenium powder solution (dissolving 0.4mmol Se powder in 20mL 80wt% hydrazine hydrate solution to obtain) that the concentration is 0.02mol / L, it is the zinc chloride aqueous solution (0.2mmol ZnCl hydrate) that concentration is 0.01mol / L 2 Dissolved in 20mL ultrapure water), stirred and mixed for 1 hour, and then hydrothermally reacted at 180°C for 12 hours. After the end, the precipitate was centrifugally washed with hydrazine hydrate 4 times to remove excess selenium powder, and then the precipitate was centrifugally washed with water until neutral. Finally, the precipitate was washed 2 times with ethanol to remove water to obtain white ZnSe 0.5N 2 h 4 Precursors of nanoribbons;

[0041] (2) 0.2mmol ZnSe·0.5N 2 h 4 The nanoribbons were dissolved in 90 mL of ethanol solution, and after stirring for 10 min, 300 μL of H ...

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
sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a high-sensitivity triethylamine gas-sensitive material as well as a preparation method and application thereof. The gas-sensitive material comprises Pt nano-particles of which the particle size is less than 2nm and a porous ZnO nanobelt of which the surface is uniformly loaded with the Pt nano-particles. According to the gas sensitive material, the Pt nano-particles with extremely small sizes are loaded on the porous ZnO nanobelt, so that high-sensitivity and high-selectivity detection on triethylamine is realized.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a high-sensitivity and high-selectivity triethylamine gas-sensing material and a preparation method thereof. Background technique [0002] Triethylamine, as a highly volatile organic compound, is flammable and explosive and can easily cause harm to people's lives. Chronic exposure to triethylamine can cause headaches, pulmonary edema, gastroenteritis, and other health problems. In addition, studies have shown that species such as fish and shellfish can release triethylamine, with concentrations increasing as the freshness of the fish decreases. Therefore, triethylamine can be used as a sign to monitor the freshness of fish. Although the detection of triethylamine has been reported by many researchers over the years, there are still some problems, such as low sensitivity and poor selectivity, which limit their applications. Semiconductor-based metal oxide gas sensor...

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 Applications(China)
IPC IPC(8): G01N27/12
CPCG01N27/127
Inventor 郭正陈绪秀
Owner ANHUI UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com