Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing composite titanium oxide nanoparticles

A titanium dioxide and nanoparticle technology, which is applied in the directions of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of difficulty in regulating particle size and morphology, and there is no regulation of particle size and morphology, so as to achieve effective utilization and improve optical efficiency. The effect of catalytic efficiency

Inactive Publication Date: 2010-02-10
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No matter from the published patents or paper reports, there is no discussion on the regulation of particle size and shape in the existing preparation methods of titanium dioxide nanoparticles. It can be inferred that the regulation of particle size and shape is difficult.

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
  • Method for preparing composite titanium oxide nanoparticles
  • Method for preparing composite titanium oxide nanoparticles
  • Method for preparing composite titanium oxide nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of rutile / anatase composite titanium dioxide nanoparticles: 2.7 g of titanium isopropoxide was added to a 500 ml beaker, and then 10 ml of ethylene glycol monoethyl ether organic solvent was added. Afterwards, 30 ml of 45% hydrogen peroxide was added while stirring. While continuing to stir constantly, the mixed solution was put into a water bath and boiled for 4 hours. In order to prevent the solution from evaporating when boiling, the beaker should be covered with an evaporating dish. After that, several pieces of metal platinum catalysts are added to the mixed solution to decompose and remove excess hydrogen peroxide. Then the solution is slowly evaporated to dryness, and the obtained residue is dried at 120° C. for 24 hours to obtain novel rutile / anatase composite titanium dioxide nanoparticles with uniform particle size and high crystallinity.

[0036] The crystal phase, purity and crystal phase change before and after heat treatment of the obtained n...

Embodiment 2

[0038]Preparation of new rutile / anatase composite titanium dioxide nanoparticles with different particle sizes and shapes: Add 2.7 grams of titanium 2-methylpropoxide, titanium tetraisopropoxide and titanium tetramethoxide into different 500ml beakers , and then add 10 ml of ethylene glycol monoethyl ether organic solvent. Afterwards, the operation steps are the same as in Example 1, and three new rutile / anatase composite titanium dioxide nanoparticles with different particle sizes and shapes can be obtained. The same as in Example 1, the obtained nanoparticles were characterized by powder X-ray diffraction, ultraviolet-visible diffuse reflectance and transmission electron microscopy. The results show that different Ti precursors can significantly affect the particle size of TiO nanoparticles and the molar ratio of rutile / anatase phase. The result is as figure 1 , 2, 3, and 5.

Embodiment 3

[0040] Preparation of new rutile / anatase composite titanium dioxide nanoparticles with different particle sizes and shapes: Add four parts of 2.7 grams of titanium isopropoxide into 500 ml beakers, and then add 5, 20, 30, 40 ml of ethylene dioxide Alcohol monoethyl ether organic solvent. Afterwards, the operation steps are the same as in Example 1, and new rutile / anatase composite titanium dioxide nanoparticles with different particle sizes and shapes can be obtained. The same as in Example 1, the obtained nanoparticles were characterized by powder X-ray diffraction, ultraviolet-visible diffuse reflectance and transmission electron microscopy. The results show that the volume of ethylene glycol monoethyl ether organic solvent can significantly affect the particle size, dispersion and molar ratio of rutile / anatase phase of titanium dioxide nanoparticles. The result is as figure 1 , 2, 3, and 5.

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 relates to a method for preparing titanium oxide nanoparticles, in particular to a method for preparing novel rutile-anatase composite titanium oxide nanoparticles and metal-doped rutile-anatase composite titanium oxide nanoparticles by chemical solution method, wherein the particle size and shape of the prepared particles are controllable. In the method, a precursor of titanium anda precursor of a doping metal M are dissolved in an organic solvent, the solution is added with hydrogen peroxide and reacts with the hydrogen peroxide to form a polymer of a metal peroxide complex, the solvent is evaporated, and the polymer is heated to decompose to form a final product. The novel rutile-anatase composite titanium oxide nanoparticles and the metal-doped rutile-anatase composite titanium oxide nanoparticles, which are prepared by the method, can be used in both photocatalysis materials and carriers of supported catalysts.

Description

technical field [0001] The invention relates to a preparation method of titanium dioxide nanoparticles, in particular to a method for preparing novel rutile / anatase composite titanium dioxide nanoparticles and metal-doped rutile / anatase composite titanium dioxide nanoparticles through a chemical solution method. Background technique [0002] The existing synthetic method of titanium dioxide nanoparticles, i.e. the preparation method of Japan ICHINOSE, is to dissolve titanium metal or titanium compound in hydrogen peroxide to generate titanium peroxide metal complex polymer, then add alkali to precipitate titanium hydroxide, and finally The precipitate was heated and dried at 100°C to generate peroxide-modified anatase titanium dioxide nanoparticles. [0003] The preparation method of ICHINOSE in Japan is to first change the titanium precursor into titanium hydroxide, then add hydrogen peroxide to form a titanium peroxide metal complex polymer, and then further boil and dry t...

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): C01G23/053
Inventor 王军虎张涛王晓东
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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