Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of anatase type nano titanium dioxide microspheres

A nano-titanium dioxide, anatase-type technology, applied in the field of photocatalytic materials, can solve problems such as pollution and corrosive environment, and achieve the effects of avoiding environmental pollution, avoiding equipment corrosion, and having good dispersion.

Pending Publication Date: 2020-11-27
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING +1
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a method for preparing anatase-type nano-titanium dioxide microspheres. The titanium dioxide microspheres exposed by the (001) crystal face of the preparation method avoid equipment corrosion and environmental degradation. pollution and other issues

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 anatase type nano titanium dioxide microspheres
  • Preparation method of anatase type nano titanium dioxide microspheres
  • Preparation method of anatase type nano titanium dioxide microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Pour 1mL of diethylenetriamine into a beaker, and under an ultrasonic field (ultrasonic power 300W), add 280mL of isopropanol dropwise into the diethylenetriamine at a rate of 10mL / min, and continue to Ultrasonic dispersion for 10 minutes to obtain solution A;

[0031] (2) Pour 10mL of isopropyl titanate into a beaker, and under an ultrasonic field (ultrasonic power 300W), add the solution A obtained in step (1) into the beaker dropwise at a rate of 5mL / min, and the addition is completed Then continue ultrasonic dispersion for 0.5h to obtain solution B;

[0032] (3) Solution B is moved into an autoclave with a polytetrafluoroethylene liner, and the filling degree of the autoclave is 80%, and then the autoclave is put into a 180° C. electronic constant temperature blast drying oven to react for 24 hours, Then cool to room temperature;

[0033] (4) The supernatant in the autoclave is removed, and the precipitate is collected by centrifugation;

[0034] (5) The prec...

Embodiment 2

[0038] (1) Pour 0.33mL of diethylenetriamine into a beaker, and under an ultrasonic field (ultrasonic power 300W), add 280mL of isopropanol dropwise into diethylenetriamine at a rate of 10mL / min. Continue ultrasonic dispersion for 10 minutes to obtain solution A;

[0039] (2) Pour 10mL of isopropyl titanate into a beaker, and under an ultrasonic field (ultrasonic power 300W), add the solution A obtained in step (1) into the beaker dropwise at a rate of 10mL / min, and the addition is completed Then continue ultrasonic dispersion for 0.5h to obtain solution B;

[0040] (3) Solution B is moved into an autoclave with a polytetrafluoroethylene liner, and the filling degree of the autoclave is 80%, and then the autoclave is put into a 180° C. electronic constant temperature blast drying oven to react for 24 hours, Then cool to room temperature;

[0041] (4) The supernatant in the autoclave is removed, and the precipitate is collected by centrifugation;

[0042] (5) The precipitate...

Embodiment 3

[0046] (1) Pour 0.33mL of diethylenetriamine into a beaker, and under an ultrasonic field (ultrasonic power 300W), add 280mL of isopropanol dropwise into diethylenetriamine at a rate of 10mL / min. Continue ultrasonic dispersion for 10 minutes to obtain solution A;

[0047] (2) Pour 10 mL of isopropyl titanate into a beaker, place it on a magnetic stirrer, add the solution A obtained in step (1) into the beaker dropwise at a rate of 5 mL / min, and continue magnetic stirring after the addition is complete. Stir for 0.5h to obtain solution B;

[0048](3) Solution B is moved into an autoclave with a polytetrafluoroethylene liner, and the filling degree of the autoclave is 80%, and then the autoclave is put into a 180° C. electronic constant temperature blast drying oven to react for 24 hours, Then cool to room temperature;

[0049] (4) The supernatant in the autoclave is removed, and the precipitate is collected by centrifugation;

[0050] (5) The precipitate obtained in step (4)...

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 preparation method of anatase type nano titanium dioxide microspheres. The preparation method comprises the following steps: dissolving isopropanol in diethylenetriamine, anduniformly mixing to obtain a solution A; dissolving the solution A in isopropyl titanate, and uniformly mixing to obtain a solution B; transferring the solution B into a high-pressure reaction kettlewith a polytetrafluoroethylene lining; wherein the filling degree of the high-pressure reaction kettle is 80%, then putting the high-pressure reaction kettle into an electronic constant-temperature blast drying oven at 160-220 DEG C to react for 12-24 hours, taking out the high-pressure reaction kettle after the reaction is finished, naturally cooling to room temperature, and then centrifuging toobtain a precipitate; and washing, drying, grinding and calcining the precipitate to obtain the anatase type nano titanium dioxide microsphere. According to the preparation method, titanium isopropoxide is adopted as a titanium source, diethylenetriamine is adopted as a crystal face control agent, the titanium dioxide microsphere with the exposed (001) crystal face is prepared, liquid HF with strong corrosivity is not used, and the problems of equipment corrosion, environmental pollution and the like are avoided.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials, and in particular relates to a preparation method of anatase nano-titanium dioxide microspheres. Background technique [0002] Titanium dioxide (TiO 2 ) has become a semiconductor material that people are most interested in in the field of photocatalytic degradation of pollutants due to its high photocatalytic activity, strong photocorrosion resistance, environmental friendliness, relatively low price, and non-toxicity to the human body. Studies have shown that, TiO 2 It can photocatalytically degrade a variety of organic pollutants into non-toxic small molecular compounds, water, carbon dioxide, etc.; it can also reduce heavy metal ions in the solution to non-toxic metals. TiO 2 There are three crystal structures: anatase, rutile and brookite. Brookite TiO 2 It belongs to the orthorhombic crystal system, has low photocatalytic activity, and is a metastable state. At present...

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 Applications(China)
IPC IPC(8): C01G23/053B82Y40/00B01J21/06B01J35/02
CPCC01G23/053B82Y40/00B01J21/063C01P2004/32B01J35/50B01J35/39
Inventor 郝世雄余晓鹏梁萍尚建平王议邓超仪
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com