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

Monolithic cg-zif-8 metal organic framework foam material and its preparation method and application

A CG-ZIF-8, metal-organic framework technology, applied in chemical instruments and methods, water/sludge/sewage treatment, adsorption water/sewage treatment, etc., can solve the problem that MOFs materials do not have thermoplasticity, limit the application of MOFs materials, Problems such as poor tolerance to acid and alkali solutions, to achieve the effect of improving acid solution tolerance, improving acid solution tolerance, and realizing environmental friendliness

Active Publication Date: 2022-05-10
CHINA AGRI UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the crystallization products of MOFs are powdery solids, and MOFs materials do not have defects such as thermoplasticity and poor tolerance to acid-base solutions, which greatly limit the application of MOFs materials in the field of sample pretreatment.

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
  • Monolithic cg-zif-8 metal organic framework foam material and its preparation method and application
  • Monolithic cg-zif-8 metal organic framework foam material and its preparation method and application
  • Monolithic cg-zif-8 metal organic framework foam material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation of embodiment 1, CG-ZIF-8 foam material

[0033] according to figure 1 The shown procedure prepares CG-ZIF-8 foam.

[0034] Prepare 50 mL of 19.5% carboxymethyl cellulose and 0.5% dextran hydrosol, and stir evenly. Dissolve (6.568g) 2-methylimidazole in the prepared hydrosol, then add 2.975g zinc nitrate hexahydrate, and use a high-speed paddle machine to continuously stir the system for 12 hours. After the reaction is completed, the sol is obtained after centrifugal purification - Gel-like carboxymethylcellulose / dextran-ZIF-8 material (CG-ZIF-8). Carboxymethylcellulose / dextran-ZIF-8 sol-gel was subjected to vacuum degassing for 30 min, then rapidly frozen and cooled to -80°C for pre-freezing (1.0 h). Then, the carboxymethylcellulose / dextran-ZIF-8 sol-gel that was initially freeze-solidified was vacuum freeze-dried for 72 hours to obtain monolithic (cylindrical) white foamy carboxymethylcellulose / Dextran-ZIF-8 material (CG-ZIF-8).

[0035] The mass...

Embodiment 2

[0038] Example 2. Application of CG-ZIF-8 foam material for adsorption and purification of five environmental endocrine disruptors (bisphenol A, bisphenol B, bisphenol S, bisphenol AF and nonylphenol) in drinking water

[0039] Using tap water and bottled purified water as the sample matrix, prepare 5 kinds of environmental endocrine disruptors (bisphenol A, bisphenol B, bisphenol S, bisphenol AF) with a concentration of 0.50mg / L-100. and nonylphenol) to be tested.

[0040] Such as image 3 As indicated, 1.0 g of the CG-ZIF-8 material prepared in Example 1 was weighed and added to 1.0 L of the test solutions of five environmental endocrine disruptors at different concentrations, and stirred for 2.0 h. After the adsorption is completed, the CG-ZIF-8 foam water purification material is taken out, and the concentration of the remaining environmental endocrine disruptors in the sample is determined. The residual concentration test results were fitted by nonlinear regression usin...

Embodiment 3

[0044] Example 3, CG-ZIF-8 foam adsorption material as repeated regeneration application of water purification material

[0045] Using tap water and bottled water as test water samples, take out the CG-ZIF-8 material prepared in Example 1, which has completed the adsorption of five environmental endocrine disruptors in the water sample for the first time, and use a NaOH solution with a concentration of 1M to regenerate the material, and then Use 15mL of methanol and 15mL of acetonitrile to soak the material for 10 minutes respectively, then take out the material, dry it at 45°C under normal pressure, and then recycle it for the next time. Repeat the cycle for a total of 5 times, and test the water sample to be tested after each adsorption is completed. The remaining concentration of environmental endocrine disruptors in the environment and calculate the recovery efficiency.

[0046] Such as Figure 4 As shown in (a), the adsorption rate (AR%) of ZIF-8 to five environmental en...

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 an integral CG-ZIF-8 metal-organic framework foam material, a preparation method and application thereof. The preparation method comprises the following steps: using a mixed solution of carboxymethylcellulose and dextran as a self-assembly medium of ZIF-8, synthesizing ZIF-8 in situ to obtain sol-gel ZIF-8, and vacuum freeze-drying Instantly. CG-ZIF-8 material not only guarantees the traditional advantages of ZIF-type materials such as large specific surface area and high porosity, but also has good mechanical and chemical stability, which overcomes the acid-sensitive defect of traditional ZIF-8-type materials. CG‑ZIF‑8 material has good selective adsorption to environmental endocrine disruptors. In addition, the monolithic CG‑ZIF‑8 material has the advantages of simple operation, easy regeneration, and convenient recycling. CG‑ZIF‑8 material has good prospects for the adsorption and removal of various endocrine disruptors in environmental water.

Description

technical field [0001] The invention relates to an integral CG-ZIF-8 metal-organic framework foam material and its preparation method and application, belonging to the technical field of new nanometer materials. Background technique [0002] The issue of water resource safety has become a public health issue of worldwide concern. In recent years, the problem of various environmental endocrine disruptors represented by bisphenol A as harmful pollutants in water has gradually intensified. These endocrine disruptors, as a class of environmental hormones, It is widely sourced from various drinking water and food plastic packaging, and can enter the human body through multiple channels such as drinking water and food intake, causing endocrine dysfunction in the body, leading to metabolic diseases and even cancer, and seriously endangering human health. There are many kinds of compounds such as environmental endocrine disruptors with small molecular weight, and they exist in trace...

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): C08G83/00C08J9/28C02F1/28C08L87/00
CPCC08G83/008C08J9/28C02F1/285C08J2387/00C08J2201/0484
Inventor 江海洋王嗣涵沈建忠夏曦王战辉李建成郑丕苗王梓乐张亮熊进城
Owner CHINA AGRI 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