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Preparation of a benzotrithiophene-benzothiazolyl covalent organic framework and its application in photocatalytic water splitting for oxygen generation

A covalent organic framework, benzothiazolyl-based technology, applied in the field of preparation of benzotrithiophene-benzothiazolyl-based covalent organic framework materials, can solve the problem of few photogenerated hole oxidation half-reactions, and achieve industrial application The effect of high value, improved utilization rate, and strong designability

Active Publication Date: 2022-04-01
FUZHOU UNIV
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Problems solved by technology

[0004] It is worth noting that many photocatalytic studies have utilized the reduction half-reaction of photogenerated electrons, and few have achieved the more challenging oxidation half-reaction of photogenerated holes.

Method used

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  • Preparation of a benzotrithiophene-benzothiazolyl covalent organic framework and its application in photocatalytic water splitting for oxygen generation
  • Preparation of a benzotrithiophene-benzothiazolyl covalent organic framework and its application in photocatalytic water splitting for oxygen generation
  • Preparation of a benzotrithiophene-benzothiazolyl covalent organic framework and its application in photocatalytic water splitting for oxygen generation

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Embodiment 1

[0025] Benzotrithiophenetrialdehyde (BTT, 10mg, 0.03mmol) and 4,4'-(benzo[C][1,2,5]thiadiazole-4,7-diyl)diphenylamine (Bt, 14.3 mg, 0.045 mmol) into a Pyrex tube (volume about 5 mL, length 20 cm, diameter 1 cm), add 0.5 mL o-dichlorobenzene, 0.5 mL n-butanol and 0.1 mL 6 M acetic acid. The Pyrex tube was then frozen and thawed in liquid nitrogen, evacuated three times to an internal pressure of 1 mbar and flame sealed. Then the Pyrex tube was placed in an oven at 120 °C for 3 days. Wash three times with THF and DMF, collect the product by suction filtration, and dry the collected brick-red powder in vacuum overnight to obtain BTT-Bt-COF.

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Abstract

The invention belongs to the field of material preparation, and proposes a benzotrithiophene-benzothiazolyl covalent organic framework material and its preparation and application in photocatalytic decomposition of water for oxygen generation. The present invention uses benzotrithiophenetrialdehyde (BTT) and 4,4'-(benzo[C][1,2,5]thiadiazole-4,7-diyl)diphenylamine (Bt) in solvothermal The preparation of benzotrithiophene-benzothiazolyl covalent organic framework material by Schiff base condensation reaction under certain conditions enhances the response ability to visible light, improves the utilization rate of solar energy, realizes the photolysis of water to produce oxygen, and is low in cost and safe reliable. The covalent organic framework prepared by the invention has a large π-conjugated system and good chemical stability, and is used for photocatalytic decomposition of water to generate oxygen, which has innovative significance. It has great application potential in the field of photocatalytic materials.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to the preparation of a benzotrithiophene-benzothiazolyl covalent organic framework material and its application for photocatalytic decomposition of water to generate oxygen. Background technique [0002] With the rapid development of industry and the improvement of people's living standards, human beings are facing more and more energy demands, and the problem of energy shortage is becoming more and more severe. Facing this problem that currently plagues the world, there are generally two solutions. One is to open source, develop sustainable and clean energy as a substitute for fossil fuels, and at the same time increase the use of natural energy without polluting the environment. For example, solar energy is the most abundant energy in the ecosystem, and visible light accounts for 47%-50% of solar energy. The current society has very limited utilization of solar ene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G12/08B01J31/06B01J35/00C01B3/04
CPCC08G12/08B01J31/06B01J35/004C01B3/042C01B2203/1205Y02P20/133Y02E60/36
Inventor 李留义刘国钰陈晶晶于岩
Owner FUZHOU UNIV
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