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

A flower-like hierarchical zno/sno2 nanocomposite gas-sensing material and its preparation method

A gas-sensitive material, flower-like classification technology, applied in analytical materials, nanotechnology, nanotechnology and other directions, to achieve broad application prospects, improve response-recovery speed, and improve the effect of gas-sensing performance

Inactive Publication Date: 2016-06-08
HENAN POLYTECHNIC UNIV
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And for ZnO nanoparticles and SnO 2 Three-dimensional flower-like ZnO / SnO assembled from nanosheets 2 Nanocomposite materials and methods for their preparation have not been reported in the literature

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 flower-like hierarchical zno/sno2 nanocomposite gas-sensing material and its preparation method
  • A flower-like hierarchical zno/sno2 nanocomposite gas-sensing material and its preparation method
  • A flower-like hierarchical zno/sno2 nanocomposite gas-sensing material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Accurately weigh 1.822gCTAB and 1.286gSnCl 2 ·2H 2 O was added to 40mL of absolute ethanol and stirred until the solid was completely dissolved. Add 5 mL of 3M NaOH aqueous solution dropwise to the above solution under stirring, and continue stirring for 10 minutes after the dropwise addition. The resulting solution was placed in a reaction kettle and reacted at 130°C for 15 hours. After the reaction, the reaction kettle was naturally cooled to room temperature. The resulting precipitate was washed 4 times with deionized water and ethanol. After centrifugation, it was dried at 60°C for 12 hours. SnO -- Powder. Add the 0.5g SnO powder prepared above into 20ml containing 0.66gZn(CH 3 COO) 2 · 2H 2 After ultrasonic treatment for 10 minutes in O aqueous solution, the solvent was distilled off under reduced pressure to obtain ZnO / SnO 2 The precursor of nanocomposites. ZnO / SnO obtained in air atmosphere 2 The nanocomposite precursor was heat-treated at 700°C for 2 hours to o...

Embodiment 2

[0032] Accurately weigh 2.733gCTAB and 1.929gSnCl 2 ·2H 2 O was added to 60 mL of absolute ethanol and stirred until the solid was completely dissolved. 7.5 mL of 3M NaOH aqueous solution was added dropwise to the above solution under stirring, and stirring was continued for 10 minutes after the addition was completed. The resulting solution was placed in a reaction kettle and reacted at 130°C for 12 hours. After the reaction, the reaction kettle was naturally cooled to room temperature. The resulting precipitate was washed with deionized water and ethanol for 4 times. After centrifugation, it was dried at 60°C for 12 hours. SnO -- Powder. Disperse the 0.8g SnO powder prepared above in 20ml containing 1.07gZn(CH 3 COO) 2 · 2H 2 In the O aqueous solution, after ultrasonic treatment for 10 minutes, low temperature thermal evaporation to remove the solvent to obtain ZnO / SnO 2 The precursor of nanocomposites. ZnO / SnO obtained in air atmosphere 2 The nanocomposite precursor was he...

Embodiment 3

[0035] Accurately weigh 1.822gCTAB and 1.286gSnCl 2 ·2H 2 O was added to 40mL of absolute ethanol and stirred until the solid was completely dissolved. Add 5 mL of 3M NaOH aqueous solution dropwise to the above solution under stirring, and continue stirring for 10 minutes after the dropwise addition. The resulting solution was placed in a reaction kettle and reacted at 130°C for 15 hours. After the reaction, the reaction kettle was naturally cooled to room temperature. The resulting precipitate was washed 4 times with deionized water and ethanol. After centrifugation, it was dried at 60°C for 12 hours. SnO -- Powder. Disperse the 0.5g SnO powder prepared above in 20ml containing 0.32gZn(CH 3 COO) 2 · 2H 2 After ultrasonic treatment for 10 minutes in O aqueous solution, the solvent was distilled off under reduced pressure to obtain ZnO / SnO 2 The precursor of nanocomposites. ZnO / SnO obtained in air atmosphere 2 The nanocomposite precursor was heat-treated at 700°C for 3 hours t...

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
sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
Sensitivityaaaaaaaaaa
Login to View More

Abstract

A ZnO / SnO2 nanocomposite gas-sensing material with a flower-like hierarchical structure, wherein an aqueous sodium hydroxide solution is added dropwise to an ethanol solution of cetyltrimethylammonium bromide and stannous chloride dihydrate under electromagnetic stirring, After the dropwise addition, continue electromagnetic stirring to prepare a precursor solution; put the precursor solution into a reaction kettle, react at 130 ° C, take out the reactants for centrifugation, washing and drying to obtain a flower-shaped stannous oxide sacrificial template; The flower-shaped stannous oxide sacrificial template is added to the zinc acetate solution, and the ZnO / SnO2 precursor is obtained after stirring and ultrasonic treatment to remove the solvent; The composite gas-sensing material is obtained; the invention can realize the controllable preparation of the composite gas-sensing material in terms of morphology and composition; the obtained composite gas-sensing material has a mass percentage content of zinc oxide of 5-15%, which is composed of The flaky tin dioxide and zinc oxide nanoparticles are assembled into flower-like shapes, which have better gas-sensing properties and have broad application prospects in the fabrication of novel high-efficiency gas sensors.

Description

technical field [0001] The invention relates to a nanocomposite material, specifically a flower-like hierarchical structure zinc oxide / tin dioxide (ZnO / SnO 2 ) nanocomposite gas sensitive material and its preparation method. Background technique [0002] Rapid and accurate detection of toxic and harmful gases in the environment is of great significance to environmental protection. Gas sensors based on metal-oxide-semiconductor gas-sensing materials have become an important means of gas detection due to their high sensitivity, fast response, simple manufacturing method, small size, and low price. Metal-oxide-semiconductor gas-sensing materials are the core components of this type of gas sensor, and their gas-sensitivity properties directly affect the performance and application of gas sensors. Therefore, the design and preparation of new metal oxide semiconductor materials with high-efficiency gas sensing performance is of great significance to improve the performance of ga...

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): G01N27/00B82Y15/00B82Y40/00B82Y30/00
Inventor 孙广李彦伟戚凤晓张赛赛曹建亮王燕付乌有孟哈日巴拉张战营
Owner HENAN POLYTECHNIC UNIV
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