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

Two-dimensional metal/COF-based photocatalytic composite material carrying metal nanoparticles as well as synthesis method and application of two-dimensional metal/COF-based photocatalytic composite material

A technology of metal nanoparticles and composite materials, applied in the field of two-dimensional photocatalysis and antifouling, can solve the problems of large forbidden band width and short carrier lifetime, and achieve the effect of reducing release rate, stable material structure, and promoting transmission.

Pending Publication Date: 2021-12-28
OCEAN UNIV OF CHINA
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of today's photocatalytic materials have more or less disadvantages such as large band gap and short carrier lifetime.

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
  • Two-dimensional metal/COF-based photocatalytic composite material carrying metal nanoparticles as well as synthesis method and application of two-dimensional metal/COF-based photocatalytic composite material
  • Two-dimensional metal/COF-based photocatalytic composite material carrying metal nanoparticles as well as synthesis method and application of two-dimensional metal/COF-based photocatalytic composite material
  • Two-dimensional metal/COF-based photocatalytic composite material carrying metal nanoparticles as well as synthesis method and application of two-dimensional metal/COF-based photocatalytic composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A two-dimensional metal / COF-based photocatalytic composite material loaded with metal nanoparticles, the specific steps of its synthesis method are as follows:

[0059] (1) Amination of two-dimensional metal materials: 60 mg of few-layer Ti 3 C 2 -MXene was dissolved in 15 mL of ethanol and deionized water with a volume ratio of 1:4, stirred thoroughly for 30 minutes, and then slowly added 200 microliters of 3-aminopropyltriethoxysilane at a temperature of 30°C and a rotation speed of Stirred at 600rpm for 20h, the resulting sample was lyophilized.

[0060] (2) In situ composite growth of two-dimensional materials: the prepared aminated Ti 3 C 2 -MXene, 70mg of triacylphloroglucinol, 67mg of p-aminodimethylaniline, 1.5mL of mesitylene, 1.5mL of dioxane, 0.5mL of 3M acetic acid aqueous solution were placed in a pyrex glass tube at 25°C , stirring at 750rpm for 1h to disperse the sample evenly. The tubes were then flash frozen at 77K (liquid N2 bath) and degassed thr...

Embodiment 2

[0064] (1) Amination of two-dimensional metal materials: 100 mg of few-layer Ti 2 C-MXene was dissolved in 50 mL of ethanol, and then 800 μL of γ-aminopropyltriethoxysilane was gradually added, the temperature was 30 ° C, the rotation speed was 800 rpm, and the mixture was stirred for 22 h. The obtained sample was washed with ethanol and then freeze-dried.

[0065] (2) In situ composite growth of two-dimensional materials: the prepared aminated Ti 2 30mg of C-MXene, 60mg of potassium hydroxide, and 70mg of triformylphloroglucinol were dissolved in 10mL of deionized water, placed in a three-necked flask, and added in an oil bath at 140°C at 600rpm under nitrogen atmosphere for 30 minutes. Then, 50 mg of p-phenylenediamine was dissolved in 15 mL of N,N-dimethylformamide, and the mixed solution was added into a three-necked flask, and the reaction was continued for 14 hours while maintaining the original addition state. The reacted solution was centrifuged 5 times with ethanol, ...

Embodiment 3

[0069] (1) Amination of two-dimensional metal materials: Dissolve 5 g of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane in 20 g of a solution with a mass ratio of ethanol to water of 9:1, and stir thoroughly well mixed. 250mg few-layer Mo 2 C was dissolved in the mixed solution at a temperature of 30°C and a rotation speed of 800rpm, and stirred for 24h. The resulting solution was then centrifuged three times with an aqueous ethanol solution, and the precipitate was lyophilized.

[0070] (2) In situ composite growth of two-dimensional materials: 1 mL of 3M acetic acid, 3 mL of m-trimethylbenzene, 3 mL of dioxane, 63 mg of triformylphloroglucinol, prepared aminated Mo 2 27 mg of C, 50 mg of p-phenylenediamine were placed in a three-necked flask, and stirred for 28 hours under a nitrogen atmosphere at a temperature of 120° C. and a rotational speed of 800 rpm. After cooling to room temperature, the product was centrifuged three times with N, N-dimethylformamide and ethanol re...

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 provides a two-dimensional metal / covalent organic framework (COF)-based photocatalytic composite material carrying metal nanoparticles as well as a synthesis method and application of the two-dimensional metal / covalent organic framework (COF)-based photocatalytic composite material. The composite material mainly comprises a two-dimensional metal material, a two-dimensional COF material and metal nanoparticles, the three components react, grow and are compounded according to the mass ratio of 1: (0.4-0.7): (6.4-14.5), and reaction parameters such as the stirring speed, the reaction time and the temperature are further optimized. The two-dimensional metal and the COF material are connected through a covalent bond to form a stable two-dimensional heterojunction, so that the lattice adaptation limit is reduced, and the photocatalytic performance is enhanced; the two-dimensional composite material carries the metal nanoparticles, so that the release rate of metal ions can be greatly reduced, the antibacterial life is prolonged, and the pollution to the environment is reduced. The synthesized composite structure can be applied to a marine antifouling coating, and has the properties of environmental protection, long acting, high efficiency and the like.

Description

technical field [0001] The invention relates to a two-dimensional metal / COF-based photocatalytic composite material loaded with metal nanoparticles and its synthesis method and application, belonging to the field of two-dimensional photocatalytic antifouling. Background technique [0002] With the development of marine resources, a large number of marine engineering facilities have been put into the ocean, such as cross-sea bridges, offshore oil drilling platforms, and port terminals. When these facilities are exposed to the marine environment, they are inevitably affected by marine biofouling. The attachment of marine organisms will greatly reduce the service life of marine engineering facilities. Therefore, it is imperative to implement effective means of marine biological antifouling. [0003] Under the constraints of environmental protection, high efficiency, long life, and spectral properties, photocatalytic antifouling methods have gradually attracted attention in th...

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): B01J31/06A01N59/16A01N59/20A01N25/10A01N25/08A01P1/00A01P3/00C09D5/16
CPCB01J31/069C09D5/1637C09D5/1618A01N59/16A01N59/20A01N25/08A01N25/10B01J35/39
Inventor 王巍刘琮陈守刚李文张晨阳
Owner OCEAN UNIV OF CHINA
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