Check patentability & draft patents in minutes with Patsnap Eureka AI!

Doping preparation method for high-activity nano vanadium oxide powder

A nano-oxidation and high-activity technology, applied in the direction of vanadium oxide, etc., can solve problems such as no relevant literature, and achieve the effects of improving stability, expanding application fields, and excellent physical and chemical properties

Inactive Publication Date: 2019-02-22
WUYI UNIV
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no relevant literature on the doping of vanadium dioxide by low-valence ions, and this technology is still in a blank period and needs to be developed and studied

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
  • Doping preparation method for high-activity nano vanadium oxide powder
  • Doping preparation method for high-activity nano vanadium oxide powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The doping preparation method of a highly active nano vanadium oxide powder described in this embodiment 1 is to synthesize the precursor V by high-temperature melting-water quenching of the sol-gel method 2 O 5 Using oxalic acid as a reducing agent and lanthanum acetate as a dopant, hydrothermally synthesizing lanthanum-doped vanadium oxide powder includes the following steps:

[0017] (1) Weigh 5g of V2O5 powder and place it in a corundum crucible, heat it up to 800℃ at a rate of 5℃ / min in a temperature-controlled muffle furnace, keep it for 20 minutes to melt the V2O5 powder, and then pour the molten V2O5 quickly Quickly stir in 400ml of deionized water, then quickly transfer the beaker to a water bath, heat and stir for 2 hours to completely dissolve the V2O5 to form a yellow-brown V2O5 sol, filter out the sediment, age, and store in a sealed and dark place;

[0018] (2) Add lanthanum acetate as the dopant and oxalic acid as the reducing agent to the V2O5 sol in sequence ...

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

No PUM Login to View More

Abstract

The invention discloses a doping preparation method for high-activity nano vanadium oxide powder. The doping preparation method for the high-activity nano vanadium oxide powder comprises the followingsteps: using oxalic acid as a reducing agent, using sodium tungstate or lanthanum acetate as a doping agent, and synthesizing tungsten-doped or lanthanum-doped vanadium oxide powder by a hydrothermalmethod. A purpose of regulating a phase change temperature of the vanadium oxide powder is realized, the vanadium oxide powder has excellent physical and chemical properties, application fields are extended, and stability is improved.

Description

Technical field [0001] The invention relates to the technical field of methods for doping vanadium oxide, in particular to a method for doping and preparing high-activity nano vanadium oxide powder. Background technique [0002] Vanadium dioxide (VO2), as a metal oxide functional material, has received widespread attention since its thermally induced phase change properties were discovered. Because of the special phase transition characteristics of VO2, its phase transition temperature is about 341K, which is close to room temperature. That is to say, when VO2 is about 341K, a reversible mutation from the high-temperature metal phase to the low-temperature semiconductor (insulator) phase occurs, and its crystal structure changes from The tetragonal rutile transforms into a monoclinic structure. Due to the change of the structure, some physical properties of VO2 will change abruptly. For example, the resistance (rate) of VO2 has a sudden jump of the order of 104 to 105. At the sam...

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): C01G31/02
CPCC01G31/02
Inventor 尹荔松蔣龙川涂驰周马思琪蓝键
Owner WUYI 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