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

Preparation method of silicon-dioxide-coated titanium dioxide hollow core-shell structural material

A titanium dioxide and silicon dioxide technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of difficult industrialization, cumbersome processes, expensive reagents, etc., and achieves low cost, method and process flow. Simple, actionable effects

Inactive Publication Date: 2012-05-23
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
View PDF0 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this type of method usually requires cumbersome procedures, expensive reagents, low yield, and is difficult to industrialize

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 method of silicon-dioxide-coated titanium dioxide hollow core-shell structural material
  • Preparation method of silicon-dioxide-coated titanium dioxide hollow core-shell structural material
  • Preparation method of silicon-dioxide-coated titanium dioxide hollow core-shell structural material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Dissolve 5g of orthotitanic acid in 30% aqueous hydrogen peroxide solution with 5ml mass percent concentration to obtain titanium peroxide aqueous solution, adjust the pH=10 of titanium peroxide aqueous solution with 2.5% mass percent concentration; under stirring conditions, Add 10 ml of titanium peroxide aqueous solution with a pH value of 10 to 60 ml of ethanol, add 5 ml of tetrahexyloxysilane with a mass percent concentration of 28% at a temperature of 80° C., and mechanically stir and reflux for 4 hours to obtain Emulsion of silica-coated titanium dioxide hollow core-shell structure material; the prepared emulsion containing silica-coated titanium dioxide hollow core-shell structure material is centrifugally precipitated, and the obtained precipitate is washed with pure water and ultrasonicated in pure water Re-disperse and re-centrifuge to precipitate, preferably repeat the above washing steps three times; then wash the obtained precipitate with absolute ethanol an...

Embodiment 2

[0030] Dissolve 10 g of orthotitanic acid in 30% aqueous hydrogen peroxide with 10 ml of mass percent concentration to obtain a titanium peroxide aqueous solution, adjust the pH=5 of the aqueous titanium peroxide solution with a mass percent concentration of 2.5%; under stirring conditions, 10ml of titanium peroxide solution with a pH value of 5 was added to 60ml of ethanol, and at a temperature of 50°C, 5ml of tetrabutoxysilane with a mass percent concentration of 28% was added, mechanically stirred and refluxed for 12 hours to obtain Emulsion of silica-coated titanium dioxide hollow core-shell structure material; the prepared emulsion containing silica-coated titanium dioxide hollow core-shell structure material is centrifugally precipitated, and the obtained precipitate is washed with pure water and ultrasonicated in pure water Re-disperse and re-centrifuge to precipitate, preferably repeat the above washing steps three times; then wash the obtained precipitate with absolute...

Embodiment 3

[0033] Dissolve 5g of orthotitanic acid in 30% aqueous hydrogen peroxide solution with 5ml mass percentage concentration to obtain titanium peroxide aqueous solution, adjust the pH=7 of titanium peroxide aqueous solution with a mass percentage concentration of 2.5% sodium hydroxide solution; Under certain conditions, 10ml of titanium peroxide solution with a pH value of 7 was added to 60ml of ethanol, and at a temperature of 80-100°C, 5ml of tetrahexyloxysilane with a concentration of 28% by mass was added, and mechanically stirred and refluxed. After 4 hours, an emulsion containing a silica-coated titanium dioxide hollow core-shell structure material was obtained; the prepared emulsion containing a silica-coated titanium dioxide hollow core-shell structure material was centrifugally precipitated, and the obtained precipitate was washed with pure water and Ultrasonic re-dispersion in pure water and then centrifugation again, preferably repeating the above washing steps three ti...

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 preparation method of silicon-dioxide-coated titanium dioxide material of a hollow structure. In the invention, material for a shell layer adopts an alcohol soluble precursor, core material adopts a water soluble titanium peroxide precursor, and then the silicon-dioxide-coated titanium dioxide core-shell structural material is synthesized in one step by controlling the ratio of alcohol to water and related conditions in an alcohol water system. Compared with the traditional stepwise synthesis preparation method, the method provided by the invention has simple flow and strong operability; meanwhile, relative cost is low, thus the method provided by the invention is applicable to mass production, has possibility of industrial production and has wide application prospect.

Description

technical field [0001] The invention relates to a preparation method of a silica shell-coated titania core material with a hollow structure. Background technique: [0002] As a functional semiconductor material, titanium dioxide has broad application prospects in the fields of electronics, coatings, photoelectric conversion, and photocatalysis. The excellent photoelectric performance of titanium dioxide lies in its ability to effectively absorb light energy and excite forbidden band electronic transitions, thereby generating electron-hole pairs. After the electrons and holes are separated, the holes can directly oxidize the surface to adsorb organic matter, or adsorbed on the surface of titanium dioxide. Contact with water molecules, etc., produces hydroxyl radicals, which further oxidize and decompose related substrates through hydroxyl radicals. It can be known from the above process that in the photoelectrochemical process of titanium dioxide, the main oxide species invo...

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): B01J21/08B01J21/06B01J35/02
Inventor 只金芳吴良专
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - 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