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Method for synthesizing carbonized MOFs (metal organic frameworks) by solvothermal method

A solvothermal method and a solvothermal reaction technology are applied in the field of solvothermal synthesis of carbonized MOFs, which can solve the problems of high energy consumption, high requirements on synthesis equipment and complicated operation, and achieve low reaction temperature, controllability and adjustment degree. , The effect of material appearance is good

Active Publication Date: 2017-07-18
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, both of these two carbonization synthesis methods require high-temperature calcination process, need to control different atmospheres, consume a lot of energy, and the operation is complicated, requiring high synthesis equipment.

Method used

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  • Method for synthesizing carbonized MOFs (metal organic frameworks) by solvothermal method
  • Method for synthesizing carbonized MOFs (metal organic frameworks) by solvothermal method
  • Method for synthesizing carbonized MOFs (metal organic frameworks) by solvothermal method

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Weigh 5.4059gFeCl 3 ·6H 2 O and 1.6614g H 2 BTC was dissolved in 80mL of methanol, and then 2mL of hydrofluoric acid and 1mL of nitric acid were added. 350W ultrasonic dispersion for 30min, after the end of ultrasonication, transfer the mixed solution to a 100mL reaction kettle, and carry out hydrothermal reaction at 220°C for 72h, the obtained black precipitate was washed with absolute ethanol and deionized water, filtered, and heated at 60°C After drying, carbonized MIL-101 (c-MIL-101-3d) is obtained.

Embodiment 2

[0028] Weigh 2.0272g FeCl 3 ·6H 2 O and 0.8307g H 3 BTC was dissolved in 40mL of methanol, and then 0.8mL of hydrofluoric acid and 0.375mL of nitric acid were added. 350W ultrasonic dispersion for 30min, after the end of ultrasonication, transfer the mixed solution to a 50mL reactor, and conduct a hydrothermal reaction at 220°C for 72h, the resulting black precipitate was washed with absolute ethanol and deionized water, filtered, and heated at 60°C After drying, carbonized MIL-100 (c-MIL-100-3d) is obtained.

Embodiment 3

[0030] Weigh 2.0272g FeCl 3 ·6H 2 O and 0.8307g H 3 BTC was dissolved in 40mL of methanol, and then 1.2mL of hydrofluoric acid and 0.375mL of nitric acid were added. 350W ultrasonic dispersion for 30min, after the end of ultrasonication, transfer the mixed solution to a 50mL reactor, and conduct a hydrothermal reaction at 220°C for 96h, the resulting black precipitate was washed with absolute ethanol and deionized water, filtered, and heated at 60°C After drying, carbonized MIL-100 (c-MIL-100-4d) is obtained.

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Abstract

The invention belongs to the technical field of material synthesis, and particularly relates to a method for synthesizing carbonized MOFs (metal organic frameworks) by a solvothermal method. The carbonized MOFs are synthesized by taking metal salt as raw materials, using reducing solvents such as methanol and N,N-dimethyl formamide, adding hydrofluoric acid and nitric acid and adopting the solvothermal method. The MOFs with different carbonization degrees are obtained by adjusting the reaction time and changing the reducing solvents. The preparation method has the advantages of simple process, low cost and the like, and provides a new approach for preparation of the carbonized MOFs.

Description

technical field [0001] The invention belongs to the technical field of preparation of carbonized metal organic framework materials, and in particular relates to a method for synthesizing carbonized MOFs by a solvothermal method. Background technique [0002] In recent years, metal-organic framework materials (MOFs for short) have the advantages of high porosity, high specific surface area, adjustable pore size, multi-dimensional network structure, etc., making MOFs can be used as potential precursors to prepare corresponding derivative materials. Among them, the carbonization of MOFs can be mainly derived into the following three categories: 1. Nanoporous carbon materials; 2. Nanoporous composite materials formed by metal or metal oxides and carbon; 3. Metal / metal oxide nanomaterials. Metal-organic framework-derived materials are widely used in many fields such as electrosorption, energy materials, catalytic materials, and environmental and atmospheric governance. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 王海鹰贺颖捷柴立元黄磊杨卫春杨志辉唐崇俭闵小波刘恢
Owner CENT SOUTH UNIV
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