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

Preparation method of titanium dioxide sol for catalyzing the dye decolouration

A technology of dye decolorization and dye solution, applied in the field of preparation of TiO2 sol, can solve the problems of endangering human survival and the environment, high chromaticity of dyeing wastewater, difficult degradation, etc., and achieves low equipment cost, high utilization rate of light energy, and high production efficiency. Simple to use effects

Inactive Publication Date: 2009-02-11
JIANGNAN UNIV
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The dyeing wastewater of the textile printing and dyeing industry has high chroma, complex components, high biological toxicity, mutagenicity and carcinogenicity, thus causing serious environmental pollution, endangering human survival and the environment, and due to the stability of synthetic dyes And the diversity of structures makes it very difficult to degrade

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 TiO 2 Sol catalytic active orange K-GN decolorization

[0021] 1. Add 7.2 parts of tetra-n-butyl titanate dropwise to 3.5 parts of ethanol, stir on a magnetic stirrer (60-500rpm) for 2 minutes to mix evenly; add 48.8 parts of water and 40.5 parts of 1mol / L hydrochloric acid, mixed evenly; under this condition, the mixture of ethanol and tetra-n-butyl titanate was added dropwise to the above mixture at a speed of 1drop / s. After the dropwise addition was completed, it was left to stand and aged for 7 days at room temperature before use.

[0022] 2. Add 90.9 parts of TiO to 9.1 parts of reactive orange K-GN dye solution with a concentration of 20mg / L 2 sol, stir well. Then it was irradiated under 40W ultraviolet lamp (253.7nm) for 100min, and the decolorization rate was 97.5%.

Embodiment 2

[0023] Example 2 H 2 o 2 / TiO 2 Sol Catalyzed Direct Scarlet 4BS Decolorization

[0024] 1. Add 7.0 parts of tetrabutyl titanate dropwise to 3.5 parts of ethylene glycol, stir on a magnetic stirrer (60-500rpm) for 2 minutes to mix evenly; add 40.1 parts of water and 48.4 parts of concentration to the Erlenmeyer flask 1 mol / L hydrochloric acid, mix well; under this condition, add the mixture of ethylene glycol and tetrabutyl titanate dropwise to the above mixture at a speed of 1 drop / s. After the dropwise addition was completed, 1.0 parts of 0.01% H 2 o 2 Mix well and use after aging for 2 hours.

[0025] 2. Add 83.3 parts of H to 16.7 parts of reactive orange K-GN dye solution with a concentration of 20mg / L 2 o 2 / TiO 2 Sol, mix well. Then it was irradiated under 40W ultraviolet lamp (253.7nm) for 80min, and the decolorization rate was 97.0%.

Embodiment 3

[0026] Example 3 Fe 3+ / TiO 2 Sol Catalyzed Decolorization of Acid Lake Blue A

[0027] 1. Add 7.0 parts of ethyl titanate dropwise to 3.5 parts of ethanol, stir on a magnetic stirrer (60-500rpm) for 2 minutes to mix evenly; add 40.0 parts of water and 48.2 parts of L of hydrochloric acid, mixed uniformly; under this condition, the mixture of ethanol and ethyl titanate was added dropwise to the above mixture at a speed of 1 drop / s. After the dropwise addition was completed, 1.3 parts of 0.01% Fe 3+ Mix well and use after aging for 10h.

[0028] 2. Add 80 parts of Fe to 20 parts of acid lake blue A dye solution with a concentration of 20mg / L 3+ / TiO 2 Sol, mix well. Then irradiate for 60min under 40W ultraviolet lamp (253.7nm), the decolorization rate is 97.8%.

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 TiO2 sol with photo-catalyst activity, and the application thereof in dye decoloration, pertaining to the cross field of textile chemical technology and environmental technology. The preparation method of TiO2 sol provided by the invention adopts titanate, an alcoholic solvent, water and a catalyst to prepare the TiO2 sol, and the solution is added with additives, such as H2O2, Fe<3+>, Cu<2+>, Cl<->, Br<-> and the like. The TiO2 sol is taken as a catalyst and can effectively decolor active dye, direct dye, acid dye, cationic dye and the like. under the irradiation of ultraviolet lights with the power of 40W and the wavelength of 253.7m.

Description

technical field [0001] The invention belongs to the intersecting field of textile chemical technology and environmental technology, and specifically relates to a TiO with photocatalytic activity that can be used for dye decolorization 2 Preparation of sols. Background technique [0002] The dyeing wastewater of the textile printing and dyeing industry has high chroma, complex components, high biological toxicity, mutagenicity and carcinogenicity, thus causing serious environmental pollution, endangering human survival and the environment, and due to the stability of synthetic dyes And the diversity of structure makes degradation very difficult. Therefore, the decolorization and degradation of dyes have received more and more attention. [0003] Photocatalytic oxidation treatment of printing and dyeing wastewater is a novel and promising method, which has the advantages of low energy consumption, easy operation, and no secondary pollution. At present, the most concerned ca...

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): B01J21/06B01J35/00C02F1/30
Inventor 王潮霞刘海
Owner JIANGNAN UNIV
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