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

A kind of preparation method of calcium copper titanate nanomaterial

A nano-material, copper calcium titanate technology, applied in the field of preparation of functional materials, can solve the problems of uneven powder structure, uneven grain size, high synthesis temperature, etc., and achieve easy operation control, low preparation cost, high catalytic performance active effect

Inactive Publication Date: 2018-07-27
BOHAI UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the solid state reaction method is easy to operate and low in cost, the synthesis temperature is too high, the reaction time is long, the obtained powder structure is not uniform, the grain size is not uniform, and impurities are inevitably introduced during the ball milling process.

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 preparation method of calcium copper titanate nanomaterial
  • A kind of preparation method of calcium copper titanate nanomaterial
  • A kind of preparation method of calcium copper titanate nanomaterial

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Prepare an aqueous solution of calcium nitrate, copper nitrate and citric acid, add titanium acetylacetonate dropwise to the above solution under stirring conditions, and finally add urea. The molar ratio of calcium nitrate, copper nitrate, titanium acetylacetonate, citric acid and urea is 1:3:4:50:50. The molar concentration of calcium nitrate is 0.01 mol / L. After stirring and mixing evenly, the obtained mixed solution is subjected to a cross-linking reaction. The reaction temperature is 200°C, and the reaction time is 4 hours. After the cross-linking reaction is completed, a high-temperature reaction is carried out in a muffle furnace. The reaction time is 10 h. After natural cooling, the target product is obtained.

[0032] The particle size of the product is between 100-150nm, the band gap is 2.0eV, and the yield of the product is 99.4%. The purity of the product is 99.7%, and the impurity content: carbon is less than 0.3%. The prepared copper calcium titanate n...

Embodiment 2

[0034] Prepare an aqueous solution of calcium nitrate, copper nitrate and citric acid, add titanium acetylacetonate dropwise to the above solution under stirring conditions, and finally add urea. The molar ratio of calcium nitrate, copper nitrate, titanium acetylacetonate, citric acid and urea is 1:3:4:20:20. The molar concentration of calcium nitrate is 0.02 mol / L. After stirring and mixing evenly, the obtained mixed solution is subjected to a cross-linking reaction, the reaction temperature is 150°C, and the reaction time is 8 hours. After the cross-linking reaction is completed, a high-temperature reaction is carried out in a muffle furnace. The reaction time is 24 h. After natural cooling, the target product is obtained.

[0035] The particle size of the product is between 150-200nm, the band gap is 2.2eV, and the yield of the product is 99.1%. The product purity is 99.5%, impurity content: carbon is less than 0.5%. The prepared copper calcium titanate nanomaterial was...

Embodiment 3

[0037] Prepare an aqueous solution of calcium nitrate, copper nitrate and citric acid, add titanium acetylacetonate dropwise to the above solution under stirring conditions, and finally add urea. The molar ratio of calcium nitrate, copper nitrate, titanium acetylacetonate, citric acid and urea is 1:3:4:100:100. The molar concentration of calcium nitrate is 0.03 mol / L. After stirring and mixing evenly, the obtained mixed solution is subjected to a cross-linking reaction. The reaction temperature is 400°C, and the reaction time is 2 hours. After the cross-linking reaction is completed, a high-temperature reaction is carried out in a muffle furnace. The reaction time is 24 h. After natural cooling, the target product is obtained.

[0038]The particle size of the product is between 150-180nm, the band gap is 2.1eV, and the yield of the product is 99.0%. The purity of the product is 99.6%, and the impurity content: carbon is less than 0.4%. The prepared copper calcium titanate ...

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
Login to View More

Abstract

The invention belongs to the technical field of preparation of functional materials, and relates to a method for preparing copper calcium titanate nanomaterials. Calcium nitrate and copper nitrate are dissolved in citric acid aqueous solution, titanium acetylacetonate is added dropwise, and urea is added to mix evenly. The cross-linking reaction is carried out at a certain temperature, and then the heat treatment is carried out in a muffle furnace to obtain copper calcium titanate nanomaterials. The molar ratio of calcium nitrate, copper nitrate, titanium acetylacetonate, citric acid and urea is 1:3:4:20-100:20-100. The invention has the advantages of simple and easy process, high purity, low impurity content, low product preparation cost, excellent performance and large-scale batch production. The copper calcium titanate nanometer material prepared by the invention has high catalytic activity when used as a photocatalytic material, and has broad application prospects in the fields of degrading dye wastewater and indoor harmful gases, photocatalytic disinfection and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional materials, and in particular relates to a method for preparing nano copper calcium titanate. Background technique [0002] Photocatalytic technology has gradually been used to study its application in environmental governance because of its advantages of utilizing solar energy and convenient cleaning. Traditional titanium dioxide, as a common photocatalyst, can only use the ultraviolet part of sunlight due to its wide band gap, so it is particularly important to find photocatalytic materials that respond to visible light. Calcium copper titanate (CaCu 3 Ti 4 o 12 CCTO for short) is a perovskite cubic crystal structure and is a ferroelectric material with a high dielectric constant. At present, most researchers are studying the bulk materials of copper calcium titanate. The traditional preparation of copper calcium titanate is a solid-state reaction method: calcium carbonate, ...

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): C04B35/462C04B35/622
CPCC04B35/462C04B35/622C04B2235/3208C04B2235/3281
Inventor 张杰许家胜崔岩王莉丽张艳萍孙啸虎杨喜宝于禄张帆
Owner BOHAI 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