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

Covalent triazine framework material with abundant defects and its preparation method and application

A technology of covalent triazine skeleton and defects, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve problems such as waste of energy, environmental pollution, unsuitable for industrial applications, etc., and achieve adsorption High efficiency, low cost, and easy preparation

Active Publication Date: 2021-10-15
ZHEJIANG UNIV OF TECH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it does not introduce defects, and requires high-temperature reflux during the material preparation process, which wastes a lot of energy and is not suitable for industrial applications. At the same time, dichloromethane and ammonia water are used in the production process, causing further environmental pollution.

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
  • Covalent triazine framework material with abundant defects and its preparation method and application
  • Covalent triazine framework material with abundant defects and its preparation method and application
  • Covalent triazine framework material with abundant defects and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In this example, the specific steps for preparing a triazine covalent framework material with abundant defects are as follows:

[0025] (1) Add 2mmol of 1,4-terephthalonitrile and 2mmol of 4,4-biphenyldinitrile into the quartz tube in turn, add the rotor, and stir evenly with a magnetic stirrer.

[0026] (2) In an ice-water bath at 0° C., under the protection of nitrogen atmosphere, slowly add 2.5 mL of trifluoromethanesulfonic acid into the quartz tube and keep stirring for 1.5 h to obtain a uniform viscous solution.

[0027] (3) The quartz tube was then transferred to an electric thermostat blast drying oven, and kept at 100° C. for 20 min to obtain a transparent solid substance.

[0028] (4) After grinding the obtained solid with a mortar, it was washed with ethanol and water three times in sequence.

[0029] (5) Dry in an oven at 60°C for 24 hours to obtain a light yellow powder, which is a covalent triazine skeleton with abundant defects.

Embodiment 2

[0031] In this example, the specific steps for preparing a triazine covalent framework material with abundant defects are as follows:

[0032] (1) Add 1mmol of 1,4-terephthalonitrile and 1mmol of 4,4-biphenyldinitrile into the quartz tube in turn, add the rotor, and stir evenly with a magnetic stirrer.

[0033] (2) In an ice-water bath at 0° C., under the protection of nitrogen atmosphere, slowly add 1.25 mL of trifluoromethanesulfonic acid into the quartz tube and keep stirring for 1.5 h to obtain a uniform viscous solution.

[0034] (3) The quartz tube was then transferred to an electric thermostat blast drying oven, and kept at 100° C. for 20 min to obtain a transparent solid substance.

[0035] (4) After grinding the obtained solid with a mortar, it was washed with ethanol and water three times in sequence.

[0036] (5) Dry in an oven at 60°C for 24 hours to obtain a light yellow powder, which is a covalent triazine skeleton with abundant defects.

Embodiment 3

[0038] In this example, the specific steps for preparing a triazine covalent framework material with abundant defects are as follows:

[0039] (1) Add 3mmol 1,4-terephthalonitrile and 3mmol 4,4-biphenyldinitrile to the quartz tube in turn, add the rotor, and stir evenly with a magnetic stirrer.

[0040] (2) In an ice-water bath at 0° C., under the protection of nitrogen atmosphere, slowly add 3.75 mL of trifluoromethanesulfonic acid into the quartz tube and keep stirring for 1.5 h to obtain a uniform viscous solution.

[0041] (3) The quartz tube was then transferred to an electric thermostat blast drying oven, and kept at 100° C. for 20 min to obtain a transparent solid substance.

[0042] (4) After grinding the obtained solid with a mortar, it was washed with ethanol and water three times in sequence.

[0043] (5) Dry in an oven at 60°C for 24 hours to obtain a light yellow powder, which is a covalent triazine skeleton with abundant defects.

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
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
Login to View More

Abstract

A covalent triazine framework material with abundant defects is prepared as follows: 1,4-terephthalonitrile and 4,4-biphenyldinitrile are mixed in an environment of -5-5°C, inert gas Under protection, add trifluoromethanesulfonic acid and stir for 1-2 hours, then raise the temperature to 80-120°C and keep for 10-30 minutes to obtain a transparent solid substance, which is ground with a mortar, washed with ethanol and water, and dried to obtain The present invention provides a method of introducing defects into the covalent triazine skeleton, so that the covalent triazine skeleton has abundant adsorption active sites. As a highly active adsorbent, the adsorbent has the following advantages in implementation and use: the The preparation method of the adsorbent is environmentally friendly, low in cost, and has more abundant defect sites as high-energy sites for pollutant adsorption. The study found that the covalent triazine framework can adsorb aromatic substances with a very high adsorption rate and adsorption capacity.

Description

(1) Technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a covalent triazine skeleton material with abundant defects, its preparation method and application. (2) Background technology [0002] Adsorption is a commonly used method for removing organic pollutants in water bodies. It has the advantages of high efficiency, low energy consumption, and no secondary pollution. It plays a very important role in industrial wastewater treatment and environmental governance. However, there are many limitations in the use of traditional adsorbents. For example, the nature of the surface groups is relatively single, which limits their adsorption capacity and application range; adsorption. [0003] The covalent triazine skeleton has excellent physical and chemical properties, such as high specific surface area, high thermal stability, high hydrophobicity, and easy surface modification, etc. After manufacturing defects on its surf...

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 Patents(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F101/32C02F101/34
CPCB01J20/22C02F1/285C02F2101/322C02F2101/327C02F2101/345
Inventor 沈意朱超宋爽
Owner ZHEJIANG UNIV OF TECH
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