Check patentability & draft patents in minutes with Patsnap Eureka AI!

Ti-MOFs (at) COFs hybrid material with stable core-shell structure as well as preparation method and application of Ti-MOFs (at) COFs hybrid material

A hybrid material and shell structure technology, applied in the field of Ti-MOFs@COFs hybrid materials, the preparation of Ti-MOFs@COFs hybrid materials, and photocatalytic materials, to improve catalytic activity and product selectivity, and promote rapid migration , Improve the effect of mass transfer

Active Publication Date: 2022-07-08
CENT SOUTH UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the existing single MOFs and COFs, it is difficult to efficiently photocatalyze the conversion of CO 2 and other defects, the first purpose of the present invention is to provide a Ti-MOFs@COFs hybrid material with a stable core-shell structure. The hybrid material perfectly combines Ti-MOFs and COFs by means of coating to realize MOFs The advantages and disadvantages of the two structures of COFs and COFs are combined to improve their catalytic performance. It can not only form stable complexes with different metal ions, but also has abundant unsaturated metal sites in the structure, showing a higher CO 2 Photocatalytic reduction ability, and has a high specific surface area, stable structure, and is conducive to repeated use

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
  • Ti-MOFs (at) COFs hybrid material with stable core-shell structure as well as preparation method and application of Ti-MOFs (at) COFs hybrid material
  • Ti-MOFs (at) COFs hybrid material with stable core-shell structure as well as preparation method and application of Ti-MOFs (at) COFs hybrid material
  • Ti-MOFs (at) COFs hybrid material with stable core-shell structure as well as preparation method and application of Ti-MOFs (at) COFs hybrid material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Ti-MOFs@COFs hybrid material NH with core-shell structure 2 - Preparation of MIL-125@COF-OH-1:

[0043] Dissolve 2,5-dihydroxyterephthalaldehyde (3 mmol) in 2 mL of acetonitrile by sonication and dissolve the NH 2 -MIL-125 (30 mg) was dispersed in the above-mentioned 2 mL of acetonitrile, and sonicated for 1.0 h to form a uniform suspension. 2,4,6-Tris(aminophenyl)-1,3,5-triazine (2 mmol) was dissolved in 2 mL of acetonitrile, slowly added dropwise to the above suspension, and sonicated for 1.0 h. Then add 0.5 mL of 12 mol / L acetic acid, and sonicate for 1 min. After three cycles of freezing-vacuum-thawing, the lids were sealed and left to react at room temperature for 72 h. Filtered with suction, washed repeatedly with methanol, ethanol, dichloromethane, and tetrahydrofuran, and extracted with methanol and tetrahydrofuran for Soxhlet for 24 h, dried at 120 °C for 12 h, and then vacuum-dried for 24 h to obtain a core-shell structure Ti-MOFs@COFs hybrid material . I...

Embodiment 2

[0046] Ti-MOFs@COFs hybrid material NH with core-shell structure 2 - Preparation of MIL-125@COF-OH-2:

[0047] Dissolve 2,5-dihydroxyterephthalaldehyde (3 mmol) in 2 mL of acetonitrile by sonication and dissolve the NH 2 -MIL-125 (20 mg) was dispersed in the above-mentioned 2 mL of acetonitrile, and sonicated for 1.0 h to form a uniform suspension. 2,4,6-Tris(aminophenyl)-1,3,5-triazine (2 mmol) was dissolved in 2 mL of acetonitrile, slowly added dropwise to the above suspension, and sonicated for 1.0 h. Then add 0.5 mL of 12 mol / L acetic acid, and sonicate for 1 min. After three cycles of freezing-vacuum-thawing, the lids were sealed and left to react at room temperature for 72 h. Filtered with suction, washed repeatedly with methanol, ethanol, dichloromethane, and tetrahydrofuran, extracted with methanol and tetrahydrofuran for 24 h, dried at 120 °C for 12 h, and then vacuum-dried for 24 h to obtain a core-shell structure Ti-MOFs@COFs hybrid material . Infrared characte...

Embodiment 3

[0050] Ti-MOFs@COFs hybrid material NH with core-shell structure 2 - Preparation of MIL-125@COF-OH-3:

[0051] Dissolve 2,5-dihydroxyterephthalaldehyde (3 mmol) in 2 mL of acetonitrile by sonication and dissolve the NH 2 -MIL-125 (10 mg) was dispersed in the above-mentioned 2 mL of acetonitrile, and sonicated for 1.0 h to form a uniform suspension. 2,4,6-Tris(aminophenyl)-1,3,5-triazine (2 mmol) was dissolved in 2 mL of acetonitrile, slowly added dropwise to the above suspension, and sonicated for 1.0 h. Then add 0.5 mL of 12 mol / L acetic acid, and sonicate for 1 min. After three cycles of freezing-vacuum-thawing, the lids were sealed and left to react at room temperature for 72 h. Filtered with suction, washed repeatedly with methanol, ethanol, dichloromethane, and tetrahydrofuran, and extracted with methanol and tetrahydrofuran for Soxhlet for 24 h, dried at 120 °C for 12 h, and then vacuum-dried for 24 h to obtain a core-shell structure Ti-MOFs@COFs hybrid material . I...

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
specific surface areaaaaaaaaaaa
pore sizeaaaaaaaaaa
absorbanceaaaaaaaaaa
Login to View More

Abstract

The invention discloses a Ti-MOFs (at) COFs hybrid material with a stable core-shell structure as well as a preparation method and application of the Ti-MOFs (at) COFs hybrid material. The method comprises the following steps: slowly adding an aromatic polyamine monomer solution into a suspension of an amino-containing Ti-MOFs material and an aromatic polyaldehyde monomer, uniformly dispersing, and adding a catalyst to catalyze a Schiff base reaction, thereby obtaining the Ti-MOFs (at) COFs hybrid material with a stable core-shell structure. According to the method, the chemical structure, the pore structure, the microstructure and the energy band structure of the Ti-MOFs (at) COFs hybrid material can be effectively regulated and controlled by changing the adding amount of the amino-containing Ti-MOFs material and the types and the using amount of the aromatic polyamine monomer and the aromatic polyaldehyde monomer, and the Ti-MOFs (at) COFs hybrid material has excellent photocatalytic CO2 reduction performance, is good in structural stability and can be applied to photocatalytic CO2 reduction. And therefore, the use cost of the device can be reduced.

Description

technical field [0001] The invention relates to a photocatalytic material, in particular to a Ti-MOFs@COFs hybrid material with a stable core-shell structure, and also to the preparation of a Ti-MOFs@COFs hybrid material with a stable core-shell structure method and its application in photocatalytic CO 2 The application in reduction belongs to the technical field of functional polymer synthesis. Background technique [0002] carbon dioxide (CO 2 ) as the most important part of greenhouse gases, accounting for 63% of the warming effect of all greenhouse gases, mainly from the burning of fossil fuels. Today, my country is in a period of accelerated development and construction, and the rapid development of industrialization also requires a large amount of fossil energy support. Although the use and development of clean energy is increasing, fossil fuels still dominate the energy use. On the other hand, CO 2 It is a green and renewable C1 resource with abundant reserves, w...

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): B01J31/22B01J35/10C01B32/40
CPCB01J31/1691C01B32/40B01J2531/46B01J2531/0213B01J2231/62B01J35/617B01J35/643B01J35/635B01J35/633B01J35/647B01J35/39Y02P20/133
Inventor 黄健涵王佳佳王立志张都王悠曹毅文李嘉伟周发刘又年
Owner CENT SOUTH UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com