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

A preparation method for photodegradable organic toxic gas multilevel nanocomposite material

A nanocomposite material and toxic gas technology, applied in separation methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of improving the photocatalytic degradation of organic toxic gases, without increasing the enrichment of harmful gases, and in the range of absorbing waves Improve limited problems, achieve the effect of improved photodegradation efficiency, high energy utilization rate, and uniform distribution of voids

Active Publication Date: 2021-12-10
南京森之语新材料科技有限公司
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Titanium-based catalysts have a long history of research. It has been found that titanium dioxide has a good photocatalytic effect when it is below 20nm, but its effective light source is limited to ultraviolet light excitation, which limits its application. The research on element modification, specifically, the use of a noble metal or rare earth metal element to dope the anatase titanium dioxide catalyst can improve its photocatalytic stability, but the improvement in expanding its absorbing range is limited. At the same time, the doping of rare earth metal Impurities will also bring pollution of associated heavy metal ions, which cannot be completely healthy and environmentally friendly, and the current photocatalyst modification process does not increase the function of enriching harmful gases, so it cannot maximize the photocatalytic degradation of organic toxic gases. Based on the above problems, there is an urgent market demand for the research and development of a highly efficient, environmentally friendly, sustainable and controllable preparation of a nano-photocatalyst material that integrates enrichment / photodegradation

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 preparation method for photodegradable organic toxic gas multilevel nanocomposite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 10Kg of montmorillonite was pulverized by mechanical pulverization, the pulverization condition was 800rpm pulverization for 45min, and then pulverized once by airflow method, the pulverization pressure was 1.0MPa, and the gas flow rate was 3m 3 / min, the crushing efficiency is 20Kg / h, and the measured particle size is 180nm. Weigh 4g of titanium tetrachloride and add it to the processed 50g porous montmorillonite. The operating conditions are to add gradually and operate in a low temperature box. The operating temperature is 3 ℃, to obtain the complex, take 10g of the complex and add it to 100ml deionized water for low-temperature hydrolysis reaction. Reaction, reacted for 6 hours, and then added 1.5 g of triethanolamine after cooling down to normal temperature and stirred evenly to obtain a nanocomposite material.

[0027] Test: Take 0.1ml of the solution and add it to 10ml of formaldehyde solution, react under visible light for 0.5h, and the degradation rate of forma...

Embodiment 2

[0030] 10Kg of montmorillonite was pulverized by mechanical pulverization, the pulverization condition was 800rpm pulverization for 45min, and then pulverized once by airflow method, the pulverization pressure was 1.0MPa, and the gas flow rate was 3m 3 / min, the crushing efficiency is 20Kg / h, and the measured particle size is 180nm. Weigh 4g of titanium tetrachloride and add it to the processed 50g porous montmorillonite. The operating conditions are to add gradually and operate in a low temperature box. The operating temperature is 3 ℃, to obtain the complex, take 10g of the complex and add it to 100ml deionized water for low-temperature hydrolysis reaction. React, react for 6 hours, and then add 1.5 g of glycerol after cooling down to normal temperature and stir evenly to obtain a nanocomposite material.

[0031] Test: Take 0.1ml of the solution and add it to 10ml of formaldehyde solution, react under visible light for 0.5h, and the degradation rate of formaldehyde reaches 8...

Embodiment 3

[0033] 10Kg of montmorillonite was pulverized by mechanical pulverization, the pulverization condition was 800rpm pulverization for 45min, and then pulverized once by airflow method, the pulverization pressure was 1.0MPa, and the gas flow rate was 3m 3 / min, the crushing efficiency is 20Kg / h, and the measured particle size is 180nm. Weigh 4g of titanium tetrachloride and add it to the processed 50g porous montmorillonite. The operating conditions are to add gradually and operate in a low temperature box. The operating temperature is 3 ℃, to obtain the complex, take 10g of the complex and add it to 100ml deionized water, and carry out low-temperature hydrolysis reaction. The reaction time is 30min, and the reaction temperature is 3°C. After the reaction, add 0.5g of tris-diaminoethylamine with a particle size of 5nm, React at 160° C. for 6 hours, then add 1.5 g of triethanolamine after cooling down to room temperature and stir evenly to obtain a nanocomposite material.

[0034]...

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 sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a multi-stage nanocomposite material with photodegradable organic toxic gas, which comprises the preparation of porous layered nano-montmorillonite: the montmorillonite is pulverized to an average particle size of 50 to 50 by mechanical pulverization and air flow method. 200nm; preliminary preparation of nanocomposite materials: compound the montmorillonite and titanium-based photocatalyst materials at low temperature to obtain a compound, add the compound to water or alcohol, react at low temperature, and then add nitrogen source or carbon source for reaction , to obtain the primary nanocomposite material; multi-level nanocomposite material modification: after the primary nanocomposite material is cooled down, a modifier is added for modification, and the modifier accounts for the compound / water or alcohol / nitrogen source or carbon source 0.2-2% of the total mass of the system; the modifying agent includes glycerol or triethanolamine.

Description

technical field [0001] The invention belongs to the technical field of functional nanometer powders, and in particular relates to a method for preparing a multilevel nanocomposite material capable of photodegrading organic toxic gases. Background technique [0002] Titanium-based catalysts have a long history of research. It has been found that titanium dioxide has a good photocatalytic effect when it is below 20nm, but its effective light source is limited to ultraviolet light excitation, which limits its application. The research on element modification, specifically, the use of a noble metal or rare earth metal element to dope the anatase titanium dioxide catalyst can improve its photocatalytic stability, but the improvement in expanding its absorbing range is limited. At the same time, the doping of rare earth metal Impurities will also bring pollution of associated heavy metal ions, which cannot be completely healthy and environmentally friendly, and the current photoca...

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): B01J21/16B01J27/22B01J27/24B01J35/10B01D53/86B01D53/72
Inventor 刘水平谭连江余媛王登虎王婷
Owner 南京森之语新材料科技有限公司
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