Supercharge Your Innovation With Domain-Expert AI Agents!

Supported metal doped mesoporous titanium dioxide photocatalyst and application thereof

A technology of mesoporous titanium dioxide and metal doping, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of weak visible light response and insufficient photocatalytic activity , Restricting practical application and other issues, to achieve the effect of not harsh process conditions, high photocatalytic activity and low cost

Active Publication Date: 2013-11-13
ZHEJIANG UNIV OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a semiconductor with a wide bandgap, titanium dioxide has been widely used in the degradation of organic pollutants and environmental restoration due to its non-toxicity, stable performance and high photocatalytic activity. However, due to the weak response of titanium dioxide to visible light, photocatalytic The activity is not high enough, which seriously restricts its practical application in photocatalysis

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
  • Supported metal doped mesoporous titanium dioxide photocatalyst and application thereof
  • Supported metal doped mesoporous titanium dioxide photocatalyst and application thereof
  • Supported metal doped mesoporous titanium dioxide photocatalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] At room temperature, first mix and dissolve 20ml of absolute ethanol and 0.4g of PEG2000, then add 6ml of tetrabutyl titanate (0.017mol) 6ml, add catalyst carrier nano-silica (Cabot, A-300) 1.2 g, after stirring for 30 minutes; add 5ml of deionized water, then add 5ml of glacial acetic acid, control the pH value to 2-3; then drop 5ml of 0.01mol / L ferric nitrate aqueous solution, continue to stir for 120min to form a sol, the sol is placed in a water bath The gelation reaction was carried out at 65°C, the surface solvent disappeared after 6 hours, and the system transformed into a light yellow wet gel, then baked at 80°C for 24 hours, then ground into powder, and calcined at 550°C for 2 hours in an air atmosphere to obtain 2.0g of loaded iron-doped mesoporous titanium dioxide photocatalyst.

[0033] Gained product carries out XRD test, test condition: small-angle XRD diffraction is measured on the X'Pert PRO type X-ray diffractometer that Holland PNAlytical Company produ...

Embodiment 2

[0037]At room temperature, first mix and dissolve 20ml of absolute ethanol and 0.4g of PEG4000, then add 6ml (0.017mol) of tetrabutyl titanate, and add 1.2g of catalyst carrier nano-silica (Cabot, A-300) under vigorous stirring, After stirring for 30 minutes, add 5ml of deionized water, then add 5ml of glacial acetic acid, and control the pH value to 2-3; then add 5ml of 0.01mol / L lanthanum nitrate aqueous solution dropwise, and continue stirring for 120min to form a sol, which is kept in a water bath for 70 The gelation reaction is carried out under the condition of ℃, the surface solvent disappears after 6 hours, and the system turns into a white wet gel, and then it is baked at 80℃ for 24 hours and then ground into powder, and calcined at 550℃ for 2 hours in the air atmosphere to obtain the loaded lanthanum doped gel. 2.1g of heteromesoporous titanium dioxide photocatalyst.

[0038] The resulting product was subjected to N 2 Adsorption-desorption test, test condition: N 2...

Embodiment 3

[0040] At room temperature, first mix and dissolve 20ml of absolute ethanol and 0.3g of PEG6000, then add 6ml (0.020mol) of isopropyl titanate, and add 1.2g of catalyst carrier nano-silica (Cabot, A-300) under vigorous stirring , after stirring for 60 minutes; add 5ml of deionized water, then add 5ml of glacial acetic acid, control the pH value to 2-3; then drop in 0.01mol / L praseodymium nitrate aqueous solution 3ml, continue to stir for 180min to form a sol, the sol is in a water bath Carry out gelation reaction at 65°C, the surface solvent disappears after 6 hours, and the system turns into a white wet gel, then bake at 80°C for 24 hours, grind it into powder, and calcinate at 600°C for 2 hours in an air atmosphere to obtain loaded praseodymium Doped mesoporous titanium dioxide photocatalyst 2.3g.

[0041] The obtained product was subjected to Uv-Vis test, and the test conditions were measured by a SHIMADZUUV-2550 UV-vis spectrophotometer produced in Japan, the wavelength ra...

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 diameteraaaaaaaaaa
specific surface areaaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a supported metal doped mesoporous titanium dioxide photocatalyst and application thereof. A carrier and titanium sol containing metal components are coated mutually and deposited; the mixed sol is added with an organic template, dried and calcined under high temperature. The prepared required supported metal doped mesoporous titanium dioxide photocatalyst has titanium dioxide maintaining an anatase crystal form, a particle size of 10-30nm, an aperture of 2-20 nm, a large specific surface area (>=200m<2> / g) and strong hydrophilicity, and has advantages of high photocatalytic activity and low cost, etc.

Description

technical field [0001] The invention relates to a supported metal-doped mesoporous titanium dioxide photocatalyst and a preparation method thereof, which can be applied to degrade organic wastewater and indoor organic pollutants under ultraviolet light or visible light conditions, and belongs to the field of inorganic nano-catalytic materials. Background technique [0002] As a semiconductor with a wide bandgap, titanium dioxide has been widely used in the degradation of organic pollutants and environmental restoration due to its non-toxicity, stable performance and high photocatalytic activity. However, due to the weak response of titanium dioxide to visible light, photocatalytic The activity is not high enough, which seriously restricts its practical application in photocatalysis. Therefore, how to further screen and prepare highly active photocatalysts and expand the range of visible light absorption of catalysts is one of the main directions of photocatalysis research. ...

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): B01J23/745B01J23/10C02F1/30C02F1/32B01D53/86B01D53/72C02F101/30
Inventor 陈枫战昌朝戴洪湖杨晋涛钟明强
Owner ZHEJIANG UNIV OF TECH
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