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 les

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

Example Embodiment

[0057] Example 1

[0058] A two-dimensional metal / COF-based photocatalytic composite material carrying metal nanoparticles, and the specific steps of the 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 a mixture 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, the temperature was 30 ° C, the rotation speed After stirring at 600 rpm for 20 h, the resulting samples were lyophilized.

[0060] (2) In situ composite growth of two-dimensional materials: the prepared aminated Ti 3 C 2 -MXene, triacylphloroglucinol 70mg, p-aminodimethylaniline 67mg, mesitylene 1.5mL, dioxane 1.5mL, 3M acetic acid aqueous solution 0.5mL placed in a Pyrex glass tube, the temperature is 25 ℃ , and stir for 1h at 750rpm to make the sample evenly dispersed. The tubes were then snap f...

Example Embodiment

[0063] 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, and the speed was 800 rpm and stirred for 22 h. The obtained samples were washed with ethanol and then freeze-dried.

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

Example Embodiment

[0068] 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, stir well well mixed. 250mg of little Mo 2 C was dissolved in the mixed solution, the temperature was 30°C, the rotational speed was 800rpm, and the mixture was stirred for 24h. The resulting solution was then centrifuged three times with an aqueous solution of ethanol and the precipitate was lyophilized.

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

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
CPCB01J35/004B01J31/069C09D5/1637C09D5/1618A01N59/16A01N59/20A01N25/08A01N25/10
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 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