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Preparation and application of imine-connected dibenzothiophene sulfuryl covalent organic framework material

A covalent organic framework, benzothiophene sulfone-based technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as insufficient driving force, Achieve the effect of easy access, high industrial application value, and simple process operation

Pending Publication Date: 2022-06-07
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although some of them have band edges covering the oxidation and reduction potentials of water, they can usually only trigger the half-reactions in photocatalytic water splitting, namely the hydrogen evolution reaction (HER) or oxygen evolution reaction (OER) due to insufficient driving force. ) provided by irradiation-induced electrons or holes

Method used

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  • Preparation and application of imine-connected dibenzothiophene sulfuryl covalent organic framework material
  • Preparation and application of imine-connected dibenzothiophene sulfuryl covalent organic framework material
  • Preparation and application of imine-connected dibenzothiophene sulfuryl covalent organic framework material

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Experimental program
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Effect test

Embodiment

[0022] Benzo[1,2-b:3,4-b′:5,6-b′]trithiophene-2,5,8-trialdehyde (9.9 mg, 0.03 mmol), 3,7-diaminobis Benzo[b,d]thiophene-5,5-dioxide (11.0 mg, 0.045 mmol) and 1 mL o-dichlorobenzene / 1,4-dioxane (volume ratio 1:1) mixed solution were placed in In a Pyrex tube, after ultrasonication for 10 minutes to obtain a uniform dispersion, add acetic acid solution (0.1 mL, 6 mol / L), freeze-thaw and cycle degassing in a liquid nitrogen bath for 3 times, then seal the tube in vacuum and react at 120 °C for 3 After cooling to room temperature, the solid was collected by suction filtration, washed three times with methanol, N,N-dimethylformamide and acetone respectively, and the resulting powder was dried in vacuum at 60 °C overnight to obtain a yellow powder of DW-COF.

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Abstract

The invention discloses an imine-connected dibenzothiophene sulfuryl covalent organic framework material and a preparation method and application thereof, and belongs to the field of material preparation. Benzo [1, 2-b: 3, 4-b ': 5, 6-b'] trithiophene-2, 5, 8-trialdehyde and 3, 7-diamino dibenzo [b, d] thiophene-5, 5-dioxide are added into an organic mixed solution, stirring is carried out, stirring is carried out, and the imine-connected dibenzothiophene sulfuryl covalent organic framework material is obtained. Freezing-unfreezing in a liquid nitrogen bath, circularly degassing for three times, sealing a tube in vacuum, and reacting, so as to finally obtain the imine-connected dibenzothiophene sulfuryl covalent organic framework material. The obtained covalent organic framework material has good photocatalytic overall water decomposition activity and has potential application value in the field of photocatalysis.

Description

technical field [0001] The invention belongs to the field of material preparation and photocatalysis, and in particular relates to a preparation method of imine-linked dibenzothiophene sulfone-based COF and its application in photocatalytic integral water splitting. Background technique [0002] In recent years, due to the rapid development of modern industry and the extensive economic development model, a large number of fossil fuels have been developed and utilized, which has caused people to face serious problems such as resource shortage and environmental pollution. Finding, developing and utilizing new green energy has become the current One of the hot topics of scientific research. As a green, non-polluting and inexhaustible energy source, solar energy is considered to be the most attractive alternative energy source. Harnessing solar energy to split water into hydrogen and oxygen via photocatalysts has become a promising approach to produce clean and renewable hydrog...

Claims

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Application Information

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IPC IPC(8): C08G12/26B01J35/00B01J31/06
CPCC08G12/26B01J31/06B01J35/39Y02P20/133
Inventor 李留义邓文凤于岩
Owner FUZHOU UNIV
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