Gold-MOFs-polymer composite membrane, and production method and application thereof

A technology of polymer and composite membrane, which is applied in the direction of preparation of organic compounds, preparation of amino hydroxyl compounds, organic compound/hydride/coordination complex catalysts, etc. It can solve the problems of separation difficulties, reduce and increase separation costs, and achieve High-efficiency catalytic effect, huge application prospects, and the effect of solving recycling problems

Active Publication Date: 2017-02-15
SHANDONG NORMAL UNIV
View PDF3 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem of poor compatibility between polymers and MOFs materials caused by the agglomeration of MOFs particles is still a great challenge to prepare high-quality MOFs membrane materials.
[0004] Gold nanoparticles have attracted much attention in the field of catalysis. They can be used for catalytic degradation of pollutants and redox reactions. Gold nanoparticles have high catalytic activity and specific surface area, but their direct use is difficult due to particle aggregation and separation from the reaction system. However, due to restrictions, particle agglomeration will lead to a reduction or even loss of catalytic activity, and separation generally requires high-speed centrifugation, which increases the cost of separation and causes the loss of catalysts. The lost gold nanoparticles will also cause adverse effects on humans and the ecological environment.
MOFs materials are good carriers of gold nanoparticles. The specific surface area of ​​MOFs materials is conducive to the loading and immobilization of gold nanoparticles, which can effectively avoid their aggregation. However, this does not effectively solve the separation problem. Separation can be reused, continuous catalysis cannot be achieved

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
  • Gold-MOFs-polymer composite membrane, and production method and application thereof
  • Gold-MOFs-polymer composite membrane, and production method and application thereof
  • Gold-MOFs-polymer composite membrane, and production method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Example 1 Metal Organic Framework UiO-66-NH 2 Synthesis

[0067] Dissolve the organic ligand 2-aminoterephthalic acid, zirconium tetrachloride, and acetic acid in N,N-dimethylformamide solvent, keep the temperature at 120°C for 24 hours, and cool down to room temperature to obtain light yellow nano-sized crystals, centrifuge, Drying; wherein the ratio of organic ligand 2-aminoterephthalic acid, zirconium tetrachloride, acetic acid and N,N-dimethylformamide solvent addition is 0.04mmol: 0.04mmol: 2mmol: 1.6ml, the obtained crystal See in description figure 1 .

Embodiment 2

[0068] Example 2 metal organic framework UiO-66-NH 2 post-synthetic modification of

[0069] Weigh UiO-66-NH-Met crystal (0.6g, 0.002mol), methacrylic anhydride 2.356ml (2.45g, 0.016mol), triethylamine 0.279ml (0.002mol), 50ml of chloroform solution, add Into a 100ml round bottom flask, the chloroform in it was dried, the triethylamine was redistilled, heated to reflux at 55°C for 24h, and a drying device was added to the condenser. After the reaction was completed, it was cooled naturally and then centrifuged, then washed 6 times with fresh chloroform, and dried in vacuum for 5 hours at 100°C. After the treatment, it was taken out for use. figure 2 .

[0070] UiO-66-NH 2 During the crystal post-modification process, the yield of double bond post-modification calculated by the nuclear magnetic spectrum is as high as 98%, and the modified nuclear magnetic hydrogen spectrum is shown in image 3 .

Embodiment 3

[0071] The synthesis of embodiment 3 side chain mercaptopolysiloxanes

[0072] In a 50ml round-bottomed flask, add 5ml of mercaptopropyldimethoxymethylsilane and 2.86ml of dichlorodimethylsilane in turn, use 3ml of benzoic acid aqueous solution as the solvent, and stir for 48 hours at 50°C . After the reaction was completed, after natural cooling, 10 ml of diethyl ether was added for extraction, and liquid separation was carried out three times in succession. The diethyl ether layer was collected and rotary evaporated at a suitable temperature to obtain a colorless viscous liquid. Gel permeation chromatography (GPC) records that the number average molecular weight of mercapto silicone oil is 3500 Daltons (GPC curve sees Figure 4 ).

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
number average molecular weightaaaaaaaaaa
Login to view more

Abstract

The invention discloses a gold-MOFs-polymer composite membrane, and a production method and an application thereof, and belongs to the technical field of polymeric functional membranes. An MOFs-polymer composite membrane obtained through self assembling of a covalent bond driven NMOFs material and mercapto group-containing functional polysiloxane is adopted to load gold nano-particles as a matrix in order to obtain the gold-MOFs-polymer composite membrane material. The gold-MOFs-polymer composite membrane has a high catalysis effect on Knoevenagel condensation of 4-nitrobenzaldehyde at room temperature and reduction of 4-nitrophenol as a continuous flow-through membrane reactor. The composite membrane has great application prospect in the field of membrane catalysis.

Description

technical field [0001] The invention relates to a gold-MOFs-polymer composite membrane and its preparation method and application, belonging to the technical field of polymer functional membranes. Background technique [0002] As a new type of hybrid porous materials, metal-organic frameworks (MOFs) show many attractive physicochemical properties. However, MOFs materials themselves are mostly brittle crystal powders or particles, which severely limits their processability, and is not easy to be deviceized, so it is difficult to promote them in practical applications. In recent years, people have developed a new method to solve this problem, that is, using nanoscale MOFs crystals (NMOFs for short) to prepare composite matrix membranes, and successfully obtained MOFs membrane materials that can be used in practical applications. [0003] On this basis, people mixed NMOFs with polymer binders, in situ self-assembly of ligands and metals in polymer binders, and gradual layer-by...

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): C08J5/18C08J3/28C08J3/24C08L83/08C08K3/08B01D69/12B01D67/00C02F1/44B01J31/22C07C213/02C07C215/76C07C253/30C07C255/42
CPCB01D69/125B01D2323/36B01J31/1691B01J31/2243B01J35/065B01J2231/342B01J2231/64C02F1/44C07C213/02C07C253/30C08J3/24C08J3/28C08J5/18C08J2383/08C08K3/08C08K2003/0806C08L83/08C07C215/76C07C255/42
Inventor 董育斌姚丙建姜卫玲丁罗刚
Owner SHANDONG NORMAL 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