Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation of flower-like V2O5 microspheres, and application of flower-like V2O5 microspheres in acetone gas sensor

A gas sensor, V2O5 technology, used in instruments, scientific instruments, measuring devices, etc., can solve the problems of inconvenient acetone detection and analysis, expensive and complicated instruments, and achieve the reduction of Schottky barriers, low cost, and improved stability. sexual effect

Pending Publication Date: 2021-01-22
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the instruments required in this process are expensive and complicated, and it is not convenient for rapid real-time detection and analysis of acetone

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
  • Preparation of flower-like V2O5 microspheres, and application of flower-like V2O5 microspheres in acetone gas sensor
  • Preparation of flower-like V2O5 microspheres, and application of flower-like V2O5 microspheres in acetone gas sensor
  • Preparation of flower-like V2O5 microspheres, and application of flower-like V2O5 microspheres in acetone gas sensor

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] Flower V of the present invention 2 o 5 The raw materials required for the preparation of the microsphere structure are: ammonium metavanadate (NH 4 VO 3 ), polyvinylpyrrolidone (PVP), citric acid, after washing, drying and calcination. Flower V 2 o 5 The diameter of the microspheres is 5-10 um, and its gas sensor exhibits high sensitivity, fast response-recovery characteristics and good selectivity to acetone.

[0027] (1) The flower-shaped V 2 o 5 Microsphere preparation method, its steps are as follows:

[0028] Step 1: Place the alumina ceramic sheet in acetone, absolute ethanol, and deionized water for 10 minutes of ultrasonic treatment to clean the surface impurities.

[0029] Step 2: First use a balance to weigh a certain amount of NH 4 VO 3 , PVP was dissolved in 15 mL deionized water, and magnetically stirred at room temperature for about 10 minutes; then a certain amount of citric acid was dissolved in 5 mL deionized water until dissolved, and then p...

specific Embodiment 1

[0038] (1) In-situ growth of flower-shaped V on the surface of the ceramic sheet electrode 2 o5 Microspheres:

[0039] Step 1: Place the alumina ceramic sheet in acetone, absolute ethanol, and deionized water for 10 minutes of ultrasonic treatment to clean the surface impurities.

[0040] Step 2: 0.117 g NH 4 VO 3 , 0.1125 g PVP was dissolved in 15 mL deionized water, and stirred magnetically for about 10 minutes at room temperature; then 0.315 g citric acid was dissolved in 5 mL deionized water until dissolved, and poured into the above solution and stirred at room temperature for about 20 minutes until the solution was Pale yellow, formulated as a precursor solution for hydrothermal synthesis.

[0041] Step 3: Pour the precursor solution of step 2 into a polytetrafluoroethylene-lined stainless steel autoclave with a filling degree of 80%. Place the cleaned ceramic electrode in the above reaction solution and seal it. Keep it warm at 180°C for 12 hours, then cool down to...

Embodiment 2

[0048] (1) In-situ growth of flower-shaped V on the surface of the ceramic sheet electrode 2 o 5 Microspheres:

[0049] Step one, step two are the same as embodiment 1.

[0050] Step 3: Place the reaction kettle in Step 2 in an oven, keep it warm at 180° C. for 1 hour, and then cool it down.

[0051] It was found that no product was deposited on the surface of the ceramic sheet when the holding time was within 1 hour, indicating that too short a reaction time was not conducive to the growth of the product on the surface of the ceramic sheet.

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
Diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses preparation of flower-like V2O5 microspheres, and application of the flower-like V2O5 microspheres in an acetone gas sensor, relates to preparation of metal oxide and application of a gas sensor. According to the invention, V2O5 with a good morphological structure and a microsphere-like structure is synthesized in situ on the surface of a ceramic sheet substrate through a hydrothermal synthesis method by using NH4VO3 as a vanadium source and PVP and citric acid as regulators; a gas sensitive element prepared by the production process can effectively avoid the defects that a sensitive material falls off in the use process, the device stability is poor and the like, and the whole production process is low in cost, simple and easy to operate and suitable for large-scale production; the flower-like microsphere structure V2O5 prepared by the method has high porosity, increases the specific surface area of the material, is beneficial to gas adsorption and desorption,shows good sensitive characteristics in acetone gas detection, and has the advantages of high sensitivity, short response recovery time, good stability and the like; and the sensor element has the advantages of small volume and simple process, is suitable for large-batch production and has a wide application prospect in the field of preparation of integrated high-performance gas sensors.

Description

technical field [0001] The invention relates to the preparation of a metal oxide and the application of a gas sensor, in particular to a flower-shaped V 2 o 5 Preparation of microspheres and their application in acetone gas sensors. Background technique [0002] V 2 o 5 It is a common semiconductor material, which has been widely studied in various fields due to its special layered structure, variable valence state, and its unique properties in electricity, optics, physical chemistry, etc. Currently, V 2 o 5 Materials have been widely used in lithium-ion batteries, capacitors, antistatic coatings, voltage switches, and electrochromic display devices. In recent years, V 2 o 5 Because of its unique structure and aerochromic properties, it has attracted more and more attention in the research of gas sensors. In order to meet the development needs of gas detection, V with various structures and morphologies 2 o 5 Nanomaterials, such as nanoparticles, nanoribbons, nano...

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
IPC IPC(8): G01N27/12
CPCG01N27/127
Inventor 孟丹乔桐桐伞晓广巩晓辉游宇
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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