Photocatalyst with function of releasing negative oxygen ions, and preparation method and application thereof

A photocatalyst and negative oxygen ion technology, applied in the field of photocatalytic materials, can solve the problems of easy sintering, uneven distribution, affecting catalytic activity and stability, etc.

Active Publication Date: 2021-08-31
中科粤能净(山东)新材料有限公司
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Titanium dioxide photocatalysts are usually used in powder form, but this will form a suspension system in the fluid, which will cause technical problems such as separation difficulties and difficult recovery, thus limiting the practical application
[0004] At present, the technical problems of supported photocatalysts are: first, when non-catalytic materials such as binders are used, the amount of titanium dioxide on the surface will be affected during the loading and sintering process, thereby affecting the catalytic activity; When titanium dioxide is loaded o

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
  • Photocatalyst with function of releasing negative oxygen ions, and preparation method and application thereof
  • Photocatalyst with function of releasing negative oxygen ions, and preparation method and application thereof
  • Photocatalyst with function of releasing negative oxygen ions, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Mix nano-titanium dioxide (particle size below 100nm, the same below) with polyethylene glycol (molecular weight: 600), and then mix with pseudo-boehmite, nitric acid, and water, and then mix nano-titanium dioxide, pseudo-boehmite (with alumina ), nitric acid, and water are mixed in a weight ratio of 15:3:2:15, and the amount of polyethylene glycol added is added according to 3% of the weight of the mixed slurry of titanium dioxide and aluminum oxide to obtain a mixed slurry of titanium dioxide and aluminum oxide;

[0083] Spray the mixed slurry of titanium dioxide and alumina on cordierite honeycomb ceramics, perform unsaturated spray dipping according to 70% of the absorption rate, then dry at 70°C for 4 hours, bake at 280°C for 3 hours, and bake at 600°C 3 hours, obtain the honeycomb ceramic carrier A of loading modifying agent;

[0084] Immerse the honeycomb ceramic carrier A loaded with the modifier into titanium sol for vacuum impregnation, remove excess slurry, t...

Embodiment 2

[0089] Mix nano-titanium dioxide with polyethylene glycol (molecular weight: 600), and then mix with pseudo-boehmite, nitric acid, and water. Nano-titanium dioxide, pseudo-boehmite (based on alumina), nitric acid, and water The mixing ratio is 15:3.5:2:18, and the amount of polyethylene glycol is added according to 2.5% of the weight of the mixed slurry of titanium dioxide and aluminum oxide to obtain a mixed slurry of titanium dioxide and aluminum oxide;

[0090] Spray and impregnate the mixed slurry of titanium dioxide and alumina on the cordierite honeycomb ceramics, perform unsaturated spray impregnation according to 70% of the absorption rate, then dry at 70°C for 4 hours, bake at 260°C for 3 hours, and bake at 650°C 3 hours, obtain the honeycomb ceramic carrier B of loading modifying agent;

[0091] Immerse the modifier-loaded honeycomb ceramic carrier B in the titanium sol for vacuum impregnation, remove excess slurry, then dry at 70°C for 4 hours, repeat this step once...

Embodiment 3

[0096] Nano-titanium dioxide is mixed with polyethylene glycol (molecular weight is 400), and then mixed with pseudo-boehmite, nitric acid, and water, and nano-titanium dioxide, pseudo-boehmite (calculated as alumina), nitric acid, and water are mixed by weight The mixing ratio is 15:3.5:2:18, and the amount of polyethylene glycol is added according to 2.5% of the weight of the mixed slurry of titanium dioxide and aluminum oxide to obtain a mixed slurry of titanium dioxide and aluminum oxide;

[0097] Spray and impregnate the mixed slurry of titanium dioxide and alumina on the cordierite honeycomb ceramics, perform unsaturated spray impregnation according to 70% of the absorption rate, then dry at 70°C for 4 hours, bake at 250°C for 3 hours, and bake at 650°C 3 hours, obtain the honeycomb ceramic carrier C of loading modifying agent;

[0098] Immerse the honeycomb ceramic carrier C loaded with the modifier into the titanium sol for vacuum impregnation, remove excess slurry, th...

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
Thermal conductivityaaaaaaaaaa
Densityaaaaaaaaaa
Apertureaaaaaaaaaa
Login to view more

Abstract

The invention discloses a photocatalyst with a function of releasing negative oxygen ions, and a preparation method and application thereof. The photocatalyst comprises a honeycomb ceramic carrier containing first rare earth metal, a modifier and a photocatalytic active component, the modifier and the active component are sequentially loaded on the honeycomb ceramic carrier, and the modifier is aluminum oxide-titanium dioxide. The catalyst is especially suitable for photocatalytic reaction under the action of ultraviolet light, has good activity and stability, and can release negative oxygen ions to further improve the air quality.

Description

technical field [0001] The invention relates to a photocatalyst capable of releasing negative oxygen ions and a preparation method thereof, belonging to the field of photocatalytic materials. Background technique [0002] Semiconductor photocatalytic oxidation, as a new technology that can decompose organic matter into carbon dioxide and water under normal temperature and pressure without causing secondary pollution, has attracted great attention from researchers all over the world. Studies have found that the use of semiconductor photocatalysis can effectively degrade various organic pollutants in water and air, such as halogenated hydrocarbons, nitroaromatics, phenols, organic pigments, pesticides, surfactants, etc.; , nitrite, thiocyanate, etc. into non-toxic or low-toxic compounds; can also be used in antibacterial, deodorizing, air purification, self-cleaning materials and other fields. The semiconductor photocatalysts that have been studied so far mainly include metal...

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): B01J23/10B01J21/06A01N59/16A01N25/08A01P1/00B01D53/86B01D53/50B01D53/52B01D53/58B01D53/72A61L9/20
CPCB01J23/10B01J23/002B01J21/063B01J35/004B01J35/0013A01N59/16A01N25/08B01D53/8668B01D53/8634B01D53/8612B01D53/8609A61L9/205B01D2255/802
Inventor 赵杰张皓
Owner 中科粤能净(山东)新材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap