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A kind of bacterial cellulose airgel, preparation method and application thereof

A bacterial cellulose and aerogel technology, applied in the field of adsorption and separation, can solve the problems of unsuitable recovery and short service life, and achieve the effects of high CO2 capture capacity, easy recovery and simplified preparation process

Active Publication Date: 2021-12-07
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since NH 2 -ZIF-8 is in a powder state and has a short service life, so it is not suitable for recycling

Method used

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  • A kind of bacterial cellulose airgel, preparation method and application thereof
  • A kind of bacterial cellulose airgel, preparation method and application thereof
  • A kind of bacterial cellulose airgel, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1g Zn(NO 3 ) 2 ·6H 2 O was dissolved in 40mL methanol solution and stirred for 12h to prepare solution A. Weighed 0.025g bacterial cellulose airgel and soaked it in solution A and used ultrasonic treatment. The ultrasonic power (or frequency) was 100W, and the ultrasonic treatment time was 30min. Add 1.25g of 2-methylimidazole and 0.75g of 2-aminobenzimidazole into 50mL methanol solution and stir at 200rpm for 30min to obtain solution B. Mix solution A and solution B and stir at 200rpm for 4h. After washing with deionized water, the obtained airgel NZB-0.75 was dried in an oven at 60 °C for 6 h.

Embodiment 2

[0041] 1gZn(NO 3 ) 2 ·6H 2 O was dissolved in 40mL methanol solution and stirred for 12h to prepare solution A. Weighed 0.025g bacterial cellulose airgel and soaked it in solution A and used ultrasonic treatment. The ultrasonic power (or frequency) was 100W, and the ultrasonic treatment time was 30min. Add 1.25g of 2-methylimidazole and 0.5g of 2-aminobenzimidazole into 50mL methanol solution and stir at 200rpm for 30min to obtain solution B. Mix solution A and solution B and stir at 200rpm for 4h. After washing with deionized water, the obtained airgel NZB-0.75 was dried in an oven at 60 °C for 6 h.

Embodiment 3

[0043] 1gZn(NO 3 ) 2 ·6H 2 O was dissolved in 40mL methanol solution and stirred for 12h to prepare solution A. Weighed 0.025g bacterial cellulose airgel and soaked it in solution A and used ultrasonic treatment. The ultrasonic power (or frequency) was 100W, and the ultrasonic treatment time was 30min. Add 1.25g of 2-methylimidazole and 1g of 2-aminobenzimidazole into 50mL methanol solution and stir at 200rpm for 30min to obtain solution B. Mix solution A and solution B and stir at 200rpm for 4h. After washing with deionized water, the obtained airgel NZB-0.75 was dried in an oven at 60 °C for 6 h.

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Abstract

The invention discloses a bacterial cellulose airgel, a preparation method and an application thereof, which is a kind of NH 2 Composite airgel of ‑ZIF‑8 and bacterial cellulose. The airgel prepared by the present invention is easy to recycle and reuse, contains a hierarchical porous structure, including macropores and micropores, and has strong CO 2 Capability.

Description

technical field [0001] The invention relates to the technical field of adsorption separation, in particular to a bacterial cellulose airgel, a preparation method and an application thereof. Background technique [0002] Greenhouse gas emissions have always been the focus of global attention. especially CO 2 The heat radiation generated by the excessive emissions of the carbon dioxide causes the global average temperature to rise. CO 2 Capture technologies play a vital role in addressing air pollution and green chemical processes. Therefore, how to efficiently capture CO 2 It is one of the focuses of human research. [0003] At present, metal-organic frameworks (MOFs) have been applied in CO due to their large specific surface area, high porosity, and adjustable structure. 2 capture field. The most typical of these is ZIF-8. The average pore diameter of ZIF-8 is 0.45nm, which is smaller than that of CO 2 (0.33nm) diameter, CO 2 Able to get inside ZIF-8. On the othe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L87/00C08L1/02C08J9/28C08G83/00B01J20/24B01J20/30B01J20/28B01J13/00B01D53/02
CPCB01D53/02B01D2257/504B01J13/0091B01J20/226B01J20/24B01J20/28047B01J2220/4806B01J2220/4812C08G83/008C08J9/0061C08J9/28C08J2205/026C08J2387/00C08J2401/02Y02P20/151Y02C20/40
Inventor 张雄飞马红姚建峰王忠国
Owner NANJING FORESTRY UNIV