Carbon nanotube and covalent organic framework compounded OER catalyst

A technology of covalent organic frameworks and carbon nanotubes, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of poor conductivity and achieve preparation The method is simple, easy to operate, and improves the effect of electron transmission

Active Publication Date: 2020-10-30
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the morphology of COF will directly affect its catalytic performance by promoting mass transfer, but COF, as a polymer of organic molecules, inevitably has poor electrical conductivity, which is also an important factor restricting COF as an OER catalyst.

Method used

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  • Carbon nanotube and covalent organic framework compounded OER catalyst
  • Carbon nanotube and covalent organic framework compounded OER catalyst
  • Carbon nanotube and covalent organic framework compounded OER catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0051] A method for preparing an OER catalyst composited with carbon nanotubes and a covalent organic framework, comprising the steps of:

[0052] (1) Take 3mg of carbon nanotubes and 6mg of 5,10,15,20-tetrakis(4-aminophenyl)porphyrin in a glass bottle and add 2mL of n-butanol / o-dichlorobenzene (volume ratio=1:1 ) mixed solution, ultrasonic (ultrasonic power is 200W) mixed for 30 minutes, then added 0.2mL3M acetic acid solution and continued ultrasonic for 5 minutes to obtain a mixed solution;

[0053] (2) Dissolve 2.4mg terephthalaldehyde in 400 microliters of n-butanol / o-dichlorobenzene (volume ratio=1:1) and ultrasonically homogenize to obtain a terephthalaldehyde solution; The diformaldehyde solution was slowly added dropwise to the mixed solution in step (1), and continued to sonicate for 20 minutes; then the mixed solution was transferred to a Pyrex glass bottle, and three times of freezing-vacuumizing-dissolving with liquid nitrogen and a double-row tube device process...

Embodiment 2

[0057] A method for preparing an OER catalyst composited with carbon nanotubes and a covalent organic framework, comprising the steps of:

[0058] (1) Take 3mg of carbon nanotubes and 1.5mg of 5,10,15,20-tetrakis(4-aminophenyl)porphyrin in a glass bottle and add 2mL of n-butanol / o-dichlorobenzene (volume ratio=1: 1) mixed solution, ultrasonic (ultrasonic power is 200W) mixed for 30 minutes, then added 0.2mL 3M acetic acid solution and continued ultrasonic for 5 minutes to obtain a mixed solution;

[0059] (2) 0.6mg terephthalaldehyde is dissolved in the mixed solution of n-butanol / o-dichlorobenzene (volume ratio=1:1) of 400 microliters and after ultrasonic homogenization, obtain terephthalaldehyde solution; The terephthalaldehyde solution is slowly added dropwise to the mixed solution in step (1), and the ultrasonic wave is continued for 20 minutes; then the mixed solution is transferred to a Pyrex glass bottle, and the liquid nitrogen and double-row tube device are used for t...

Embodiment 3

[0063] A method for preparing an OER catalyst composited with carbon nanotubes and a covalent organic framework, comprising the steps of:

[0064] (1) Take 3.5mg of carbon nanotubes and 1mg of 5,10,15,20-tetrakis(4-aminophenyl)porphyrin in a glass bottle and add 2mL of n-butanol / o-dichlorobenzene (volume ratio=1: 1) mixed solution, ultrasonic (ultrasonic power is 200W) mixed for 30 minutes, then added 0.2mL 3M acetic acid solution and continued ultrasonic for 5 minutes to obtain a mixed solution;

[0065] (2) 0.4mg terephthalaldehyde is dissolved in the mixed solution of n-butanol / o-dichlorobenzene (volume ratio=1:1) of 400 microliters and after ultrasonic homogenization, obtain terephthalaldehyde solution; The terephthalaldehyde solution is slowly added dropwise to the mixed solution in step (1), and the ultrasonic wave is continued for 20 minutes; then the mixed solution is transferred to a Pyrex glass bottle, and the liquid nitrogen and double-row tube device are used for t...

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Abstract

The invention discloses a carbon nanotube and covalent organic framework compounded OER catalyst, and belongs to the technical field of water electrolysis catalysis. The carbon nanotube and covalent organic framework compounded OER catalyst is composed of a molecular catalyst and a conductive carbon carrier, the molecular catalyst is formed by covalent organic frameworks COFs and metal ions through coordination, and the conductive carbon carrier is carbon nanotubes CNTs. The high conductivity of CNTs and the synergistic effect of surface active material metal coordination COFs are combined, and the accessibility of catalytic conduction, mass transfer and active sites is greatly improved, so that the oxygen evolution catalytic activity of the catalyst is improved. And a solvothermal preparation method is adopted, so that the method is simple and safe.

Description

technical field [0001] The invention relates to an OER catalyst composed of a carbon nanotube and a covalent organic framework, belonging to the technical field of electrolytic water catalysis. Background technique [0002] With the development of the world economy, energy and environmental problems are becoming more and more serious. At present, the main energy used by human beings is still traditional non-renewable energy such as coal, natural gas and oil. The depletion of limited resources has prompted people to study a series of renewable energy sources as alternatives, among which hydrogen energy has attracted much attention due to its high efficiency and greenness. Fuel cells, metal-air batteries, alkaline electrolyzed water and other conversion systems designed based on energy conversion and storage are based on the principle of a double-electrode system. The oxygen evolution reaction (OER) in the anode part is a four-electron-proton coupling reaction, which require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22B01J35/10C25B11/06C25B1/04
CPCB01J31/1691B01J31/1805B01J31/2213B01J35/0033B01J35/1004B01J2531/845C25B1/04Y02E60/36
Inventor 杜明亮陆双龙甘志健朱罕段芳
Owner JIANGNAN UNIV
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