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

A preparation method of composite photocatalytic material based on microbial template

A technology for composite photocatalysis and photocatalytic materials, which is applied in the field of composite photocatalytic material preparation based on microbial templates, can solve the coupling and synergistic effect of difficult composite photocatalytic materials, and it is difficult to realize zinc oxide-cadmium sulfide semiconductor heterojunction gold nanoparticles Problems such as nanoscale controllability of large and small loading sites, and difficulty in obtaining large-scale nanomaterials

Active Publication Date: 2021-05-07
NORTHWESTERN POLYTECHNICAL UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the patent CN105363477A, ​​the silver-cadmium sulfide-titanium dioxide ternary composite photocatalytic material was prepared by evaporation-induced self-assembly and photodeposition. This method uses a grinding process to prepare powder composite materials, and it is difficult to obtain nanomaterials with uniform size and regular shape.
In addition, in the patent CN105498802A, a zinc oxide-gold-cadmium sulfide ternary composite photocatalytic material with a one-dimensional nanorod array structure was prepared through the process of electrochemical deposition and photodeposition. The nanoscale controllability of mass junction and gold nanoparticle size and loading site is easy to cause problems such as heterojunction overlap and gold nanoparticle aggregation
The current preparation method is difficult to maximize the coupling and synergy between the components of the composite photocatalytic material, so it is necessary to explore a new nanoscale controllable composite photocatalytic material preparation method

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
  • A preparation method of composite photocatalytic material based on microbial template
  • A preparation method of composite photocatalytic material based on microbial template
  • A preparation method of composite photocatalytic material based on microbial template

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In this example, titanium dioxide is used as the photocatalytic material 5, Au is used as the catalytic loading material I6, and M13 phage is used as the biological template. The structure of M13 phage is as follows: figure 1 shown. The specific preparation process of the composite photocatalytic material is as follows:

[0028] 1) Use phage display technology to screen the polypeptide Ⅰ3 with specific adsorption and nucleation ability to the photocatalytic material titanium dioxide 5 and the polypeptide Ⅱ4 with specific adsorption and nucleation ability to the catalytic loading material ⅠAu6;

[0029] 2) Using genetic modification technology to express the polypeptide I3 with specific adsorption and nucleation ability on PⅧ protein 1 of M13 phage, and express the polypeptide II4 with specific adsorption and nucleation ability on PⅢ protein 2 of M13 phage, Its structure is as figure 2 shown;

[0030] 3) The concentration of 25mL genetic modification is 5×10 13 Pfu / ...

Embodiment 2

[0033] In this example, titanium dioxide is used as the photocatalytic material 5, Au is used as the catalytic supporting material I6, cadmium sulfide is used as the catalytic supporting material II8, and M13 phage is used as the biological template. The structure of M13 phage is as follows: figure 1 shown. The specific preparation process of the composite photocatalytic material is as follows:

[0034] 1) Use phage display technology to screen the polypeptide Ⅰ3 with specific adsorption and nucleation ability to the photocatalytic material titanium dioxide 5, the polypeptide Ⅱ4 with specific adsorption and nucleation ability to the catalytic loading material ⅠAu6, and the sulfidation of the catalytic loading material Ⅱ Cadmium 8 is a peptide III7 with specific adsorption and nucleation capabilities;

[0035] 2) Using genetic modification technology to express polypeptide I3 and polypeptide III7 with specific adsorption and nucleation ability on PⅧ protein 1 at different posi...

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 discloses a method for preparing a composite photocatalytic material based on a microbial template, belonging to the field of photocatalysis. The method first uses phage display technology to screen polypeptides with specific adsorption and nucleation capabilities, and then expresses them on the capsid protein of specific microorganisms through genetic modification technology, and finally puts the modified microorganisms as templates into photocatalytic materials. Composite photocatalytic materials were prepared in the sol of co-catalyzed loading materials. The method for preparing a composite photocatalytic material based on a microbial template according to the present invention can realize the preparation of a large number of nanometer composite photocatalytic materials, the preparation process is controllable at the nanometer level, and the photocatalytic efficiency is effectively improved.

Description

technical field [0001] The invention relates to the field of photocatalysis, in particular to a method for preparing a composite photocatalytic material based on a microbial template. Background technique [0002] In the 21st century, energy and the environment are two important issues that human beings face and need to be resolved urgently. Due to the advantages of low energy consumption and no secondary pollution, photocatalytic technology has become an ideal environmental pollution control technology and clean energy production technology, and is widely used in energy, water or air purification, medical and health care, and national defense and military fields. Multi-component composite photocatalytic materials with zero-dimensional or one-dimensional nanostructures can effectively reduce the recombination rate of photogenerated electron-hole pairs, increase the surface catalytic reaction speed and increase the spectral absorption range of wide-bandgap photocatalytic mate...

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): B01J31/38B01J35/00B01J37/00
CPCB01J31/38B01J35/004B01J35/006B01J37/0009
Inventor 马炳和罗剑王冠毕珍李博源邓进军苑伟政
Owner NORTHWESTERN POLYTECHNICAL 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