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

Method for preparing two-dimensional sheet-shaped Cu-MOF (Metal Organic Framework) material

A flake, cu-btc technology, applied in carboxylate preparation, organic chemistry methods, chemical instruments and methods, etc., can solve the problems of low yield, limit the promotion and application of two-dimensional MOF materials, harsh conditions, etc., and achieve catalytic The effect of high activity, high yield and mild reaction conditions

Active Publication Date: 2018-09-21
NANJING TECH UNIV
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current preparation methods of two-dimensional MOF materials mainly include interfacial reaction method and exfoliation method. These methods often have harsh conditions and extremely low yields, which greatly limit the further promotion and application of two-dimensional MOF materials. Therefore, it is urgent to develop a simple method. , mild and easy-to-scale 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
  • Method for preparing two-dimensional sheet-shaped Cu-MOF (Metal Organic Framework) material
  • Method for preparing two-dimensional sheet-shaped Cu-MOF (Metal Organic Framework) material
  • Method for preparing two-dimensional sheet-shaped Cu-MOF (Metal Organic Framework) material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Mix Cu-BTC and urea solution with pH=9 at a solid-to-liquid ratio of 1 / 100g / ml, stir at 25°C for 5 hours, filter, wash, and dry to obtain a two-dimensional sheet-like Cu-MOF-25 with a thickness of 30nm ~ 100nm. In the catalytic oxidation experiment of styrene, the conversion rate reached 98.97% when reacting for 5 hours.

Embodiment 2

[0029] Mix Cu-BTC and sodium hydroxide solution with pH=10 at a solid-to-liquid ratio of 1 / 80g / ml, stir at 80°C for 2 hours, filter, wash, and dry to obtain two-dimensional flaky Cu-MOF-80, which The thickness is 200nm-300nm. In the catalytic oxidation experiment of styrene, the conversion rate reached 97.42% when reacting for 5 hours.

Embodiment 3

[0031] Mix Cu-BTC and ammonia aqueous solution with pH=12 at a solid-to-liquid ratio of 1 / 50g / ml, stir at 120°C for 1 hour, filter, wash, and dry to obtain two-dimensional sheet-like Cu-MOF-120 with a thickness of 400nm ~ 500nm. In the catalytic oxidation experiment of styrene, the conversion rate reaches 97.15% when reacting for 5 hours.

[0032] In the above examples, the XRD comparison diagram of the crystal structure before and after Cu-BTC transformation is as follows figure 1 Wherein a) is Cu-BTC before transformation, b) is the XRD pattern of Cu-MOF after transformation at 25°C in Example 1, and c) is Cu-MOF after transformation at 80°C in Example 2 d) is the XRD pattern of Cu-MOF transformed at 120°C in Example 3. Scanning electron micrographs (SEM) of the transformed crystal morphology as figure 2 Shown, where a is the SEM image of the Cu-MOF transformed at 25°C in Example 1, and b is the SEM image of the Cu-MOF transformed at 80°C in Example 2.

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 two-dimensional sheet-shaped Cu-MOF (Metal Organic Framework) material. The method comprises the following steps: mixing and stirring Cu-BTC (benzene-1,3,5-tricarboxylic acid) and an alkaline solution according to a certain solid-liquid ratio; reacting at the temperature of 25 DEG C to 120 DEG C; filtering, washing with de-ionized water and drying in vacuum to obtain the two-dimensional sheet-shaped Cu-MOF material, wherein the alkaline solution is at least one of urea, sodium carbonate, sodium bicarbonate, ammonia water, sodium hydroxide and potassium hydroxide. The method disclosed by the invention has the characteristics of moderate operation conditions, controllable conversion process, high reaction yield, easiness for large-scale preparation and the like, and has excellent oxidization performance in styrene oxidization reaction.

Description

technical field [0001] The invention belongs to the field of metal organic framework materials, and in particular relates to a method for preparing a two-dimensional sheet Cu-MOF material. Background technique [0002] Due to the unique physical and chemical properties of two-dimensional materials, two-dimensional materials have been widely studied in recent years. The various 2D materials studied so far include graphene, graphene oxide, transition metal sulfides, metal oxides, and boron nitride, among others. In recent years, two-dimensional sheet-like metal-organic frameworks (MOFs) have been successfully prepared and have become a new member of two-dimensional materials. As we all know, MOF is a porous material with a periodic network structure formed by self-assembly of metal ions or clusters and organic ligands. It has the advantages of adjustable structure and function, highly ordered pore structure, and high specific surface area. Storage, separation, catalysis, sen...

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): C08G83/00B01J31/22C07D303/04C07D301/19
CPCB01J31/1691B01J2231/72B01J2531/0213B01J2531/16C07D301/19C07D303/04C08G83/008B01J31/2239B01J2231/70C07C51/418C07F1/08C07C63/307C07B33/00
Inventor 李航徐湘越张所瀛杨祝红陆小华
Owner NANJING TECH 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