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

Alginate fibre metal complex photocatalyst and preparation method thereof

A metal complex, seaweed fiber technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of not easily biodegradable synthetic fibers, catalyst preparation process Complications, unfavorable protection of the ecological environment, etc., achieve the effects of excellent repeated use performance, conducive to industrialization, and easy operation.

Inactive Publication Date: 2014-06-18
TIANJIN POLYTECHNIC UNIV
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Nafion membrane is expensive, and modified polyacrylonitrile fibers and modified polytetrafluoroethylene fibers need to undergo complex modification reactions to introduce functional groups that can coordinate with metal ions, which makes the catalyst preparation process complicated. On the other hand, these fibers are synthetic fibers that are not easy to biodegrade, which is not conducive to the protection of the ecological environment, which limits their application as a heterogeneous Fenton reaction photocatalyst carrier

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
  • Alginate fibre metal complex photocatalyst and preparation method thereof
  • Alginate fibre metal complex photocatalyst and preparation method thereof
  • Alginate fibre metal complex photocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Pretreatment process: at room temperature and under stirring conditions, first use a non-ionic surfactant aqueous solution with a concentration of 2.0g / L to wash and treat the seaweed fiber for 10 minutes, then take it out, then use distilled water to wash it 5 times, and finally put the It can be dried under vacuum at 50°C;

[0034] 2. Preparation of iron-copper metal ion mixed solution: use copper sulfate and ferric chloride to prepare a mixed metal ion aqueous solution with a molar concentration of 0.10 mol / L, and the molar concentration ratio of iron ions and copper ions in the mixed aqueous solution is required to be 1: 0.33, that is, the volume concentration of ferric chloride aqueous solution and copper sulfate aqueous solution is 0.075mol / L and 0.025mol / L respectively. Then the resulting mixed aqueous solution was left to stand for 2-5 hours, and filtered for subsequent use;

[0035] 3. Coordination reaction between seaweed fiber and metal ion: the seaweed f...

Embodiment 2

[0039] 1. The process is the same as Step 1 in Example 1 respectively.

[0040] 2. The molar concentration ratio of iron ion and copper ion in the mixed aqueous solution of metal ions is adjusted to 1: 1, that is, the volume concentration of ferric chloride aqueous solution and copper sulfate aqueous solution is 0.05mol / L and 0.05mol / L respectively. All the other are with 2 in embodiment 1.

[0041] 3. The process is the same as step 3 in Example 1 respectively.

[0042] 4. The process is the same as step 4 in Example 1 respectively. The obtained yellow-green seaweed fiber metal complex catalyst is abbreviated as Cu-Fe-ALG-2. After measurement and calculation: the content of iron ion and copper ion in the catalyst Cu-Fe-ALG-2 is 61.26 mg / g and 73.82 mg / g respectively, and the dry fracture strength of the obtained catalyst is measured, and the obtained value is 220.54 cN.

Embodiment 3

[0044] 1. The process is the same as Step 1 in Example 1 respectively.

[0045] 2. The molar concentration ratio of iron ion and copper ion in the mixed aqueous solution of metal ions is adjusted to 1: 3, that is, the volume concentration of ferric chloride aqueous solution and copper sulfate aqueous solution is 0.025mol / L and 0.075mol / L respectively. All the other are with 2 in embodiment 1.

[0046] 3. The process is the same as step 3 in Example 1 respectively.

[0047] 4. The process is the same as step 4 in Example 1 respectively. The obtained yellow-green seaweed fiber metal complex catalyst is abbreviated as Cu-Fe-ALG-3. After measurement and calculation: the contents of iron ions and copper ions in the catalyst Cu-Fe-ALG-3 were 33.52 mg / g and 105.65 mg / g respectively, and the dry fracture strength of the obtained catalyst was measured, and the obtained value was 221.49 cN.

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
Dry breaking strengthaaaaaaaaaa
Volume concentrationaaaaaaaaaa
Login to View More

Abstract

The invention relates to an alginate fibre metal complex catalyst and a preparation method thereof. The catalyst is characterized by being composed of an alginate fibre ligand containing a large number of carboxyl and having good biodegradability and a double-coordination reactant with iron ions and copper ions, wherein the contents of the iron ions and the copper ions are respectively 33.52-96.31mg / g and 38.17-105.65mg / g; the dry breaking strength is 219.62-221.49cN. The preparation method provided by the invention comprises the following steps of 1, a pre-treatment technology of an alginate fibre; 2, preparation of an iron-copper metal ion mixing solution; 3, a complexing reaction of the alginate fibre and metal ions; and 4, carrying out aftertreatment technology on the alginate fibre and the metal ions to obtain a yellow green fibrous alginate fibre iron complex catalyst. The catalyst provided by the invention has the advantages that the catalyst has the good catalytic activity in a wide PH range, the salt tolerance is strong, the reusability is good, the catalyst is degraded after using in a natural environment, the environmental pollution is almost not caused, and the alginate fibre metal complex catalyst is a non-homogeneous phase Fenton reaction catalyst which has favorable combination property and is environment-friendly.

Description

technical field [0001] The invention relates to chemical catalyst technology, in particular to a seaweed fiber metal complex photocatalyst for promoting the degradation of organic pollutants such as dyes in printing and dyeing wastewater and a preparation method thereof. Background technique [0002] Fenton oxidation technology is an industrial wastewater treatment technology with bright development prospects, which can rapidly and completely degrade and mineralize refractory organic pollutants such as dyes. However, the homogeneous Fenton oxidation technology must be used under acidic conditions (pH=2-5), which is greatly limited in practical application. It will not only increase the process and cost due to adjusting the pH value, but also remain in the water after the reaction. Iron ions will cause secondary pollution. The heterogeneous Fenton reaction catalyst made by immobilizing iron ions on the surface of the supporting material can not only significantly promote the...

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): B01J31/22C02F1/30C02F1/72C02F103/30
Inventor 董永春李冰
Owner TIANJIN POLYTECHNIC 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