Nanoparticle-embedded amyloid protein fiber filter membrane and method used for pollutant degradation

An amyloid protein and fiber filter membrane technology, which is applied to the field of amyloid protein fiber filter membrane embedded with nanoparticles, achieves the effects of preventing loss, widening assembly materials and reducing costs

Inactive Publication Date: 2015-12-02
TIANJIN UNIV
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Up to now, there has been no report on the use of amyloid fibers to protect metal nanoparticles and prepare them into filter membranes with catalytic properties. Once this simple and fast method of catalytic reaction is promoted, it will have a good application prospect.

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
  • Nanoparticle-embedded amyloid protein fiber filter membrane and method used for pollutant degradation
  • Nanoparticle-embedded amyloid protein fiber filter membrane and method used for pollutant degradation
  • Nanoparticle-embedded amyloid protein fiber filter membrane and method used for pollutant degradation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: The insulin amyloid fiber filter membrane embedded with silver nanoparticles is used for the catalytic degradation of p-nitrophenol, wherein the silver nanoparticles are reduced by hydrazine hydrate. The specific operation steps are as follows:

[0040] (1) Preparation of insulin amyloid fibrils: prepare a 1 mM bovine insulin solution, add NaCl to make the final concentration 100 mM, adjust the pH of the solution to 3, and heat in a water bath at 60° C. for 5 hours to obtain insulin amyloid fibrils.

[0041](2) Prepare 5mM silver nitrate solution with ultrapure water.

[0042] (3) To prepare silver nanoparticles-insulin amyloid fiber composite material, add 200 μL amyloid fiber solution and 3 mL silver nitrate solution to 50 mL ultrapure water, adjust the pH to 8, mix well at room temperature, and then add hydrazine hydrate dropwise A total of 0.5 mL was fully mixed and reduced under magnetic stirring, and the silver nanoparticle-insulin amyloid fiber composi...

Embodiment 2

[0046] Example 2: The bovine lactoglobulin amyloid fiber filter membrane embedded with silver nanoparticles is used for the catalytic degradation of p-nitrophenol, wherein the silver nanoparticles are directly reduced by bovine lactoglobulin amyloid fibrils. The specific operation steps are as follows:

[0047] (1) Preparation of bovine lactoglobulin amyloid fibrils: 10 mM purified bovine lactoglobulin was selected and heated in a water bath at 90° C. at pH=2 for 5 hours to obtain a bovine lactoglobulin amyloid fibril solution.

[0048] (2) prepare 10mM silver nitrate solution with ultrapure water;

[0049] (3) To prepare the silver nanoparticle-amyloid fiber composite material, add 200 μL amyloid fiber solution and 3 mL silver nitrate solution to 50 mL ultrapure water, adjust the pH to 12, mix thoroughly at room temperature and place the mixed solution at 90 ℃ water bath, after 2h, the directly reduced silver nanoparticles-bovine lactoglobulin amyloid fiber composite material...

Embodiment 3

[0053] Example 3: The lysozyme amyloid fiber filter membrane embedded with gold-silver alloy nanoparticles is used for the catalytic degradation of p-nitrophenol, wherein the gold-silver alloy nanoparticles are reduced by sodium borohydride, and the specific operation steps are as follows:

[0054] (1) Preparation of lysozyme amyloid fibers: 10 mM purified lysozyme solution was selected and heated in a water bath at 60° C. at pH=2 for 7 days to obtain lysozyme amyloid fibers.

[0055] (2) prepare the silver nitrate solution of 10mM with ultrapure water, the chloroauric acid solution of 20mM;

[0056] (3) To prepare gold-silver alloy nanoparticles-lysozyme amyloid fiber composite material, add 500 μ L amyloid fiber solution, 3 mL silver nitrate, and 3 mL chloroauric acid solution to 50 mL ultrapure water, adjust the pH to 13, and fully After mixing, quickly inject freshly prepared 0.1M NaBH 4 1 mL of the solution was fully mixed and reduced, and a gold-silver alloy nanoparticl...

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
pore sizeaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to a nanoparticle-embedded amyloid protein fiber filter membrane and a method used for pollutant degradation. A filter membrane with catalytic activity is prepared by utilization of amyloid protein fibers coating nanoparticles and used for catalysis degradation of pollutants. The method concretely comprises steps: a nanoparticle-amyloid protein fiber composite material is prepared; a composite filter membrane is prepared from the composite material; the composite filter membrane is applied in degradation of corresponding pollutants, and the membrane catalytic reaction conversion rate is adjusted through control of a flow velocity of a pollutant solution. When the catalytic reaction is compared with a catalytic reaction employing nanoparticles, the nanoparticles are embedded in the amyloid protein fibers, loss of the nanoparticles is prevented, the filter membrane can be used repeatedly after preparation film forming, and the economic cost is lowered. The composite filter membrane preparation and the method used for pollutant degradation is advantageous in that preparation conditions are mild and simple, the catalysts can be utilized repeatedly, and degradation operation is fast and convenient.

Description

technical field [0001] The invention belongs to the technical field of degradation of chemical pollutants, and in particular relates to an amyloid fiber filter membrane embedded with nanoparticles and a method for degrading pollutants. Background technique [0002] In recent years, metal nanoparticles have attracted widespread attention in many fields due to their novel characteristics, especially as catalysts, they have the characteristics of fast catalytic efficiency, high selectivity, convenient and mild use conditions, etc., showing many advantages that traditional catalysts cannot match. Among the twelve basic principles of "green chemistry", catalysis is considered as one of the important means to achieve greening, and nanoparticles have been developed as the fourth generation catalyst internationally. [0003] However, although the nanoscale size brings excellent catalytic performance to noble metal nanoparticles, it also has the disadvantage of being difficult to rec...

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 Applications(China)
IPC IPC(8): B01D71/06B01D69/12B01D69/10B01D67/00B01J31/26B01J31/28C02F1/44C02F1/70C02F101/38
Inventor 苏荣欣朱宏秀齐崴黄仁亮王梦凡
Owner TIANJIN UNIV
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