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Preparation of triazine ring covalent organic framework material doped porphyrin cobalt photocatalyst

A technology of covalent organic framework and porphyrin cobalt light, which is applied in the direction of organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, carbon monoxide, etc., can solve the problem of easy agglomeration and reduction of pure porphyrin cobalt Surface area and other issues to achieve the effect of reducing photocorrosion and improving photocatalytic activity

Pending Publication Date: 2022-08-05
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing pure porphyrin cobalt photocatalysts are easy to agglomerate, thereby reducing the surface area and the high photogenerated electron and hole recombination rate problems, and provide a THFB-COF-2-Zn doped Preparation method of porphyrin cobalt carbon dioxide reduction photocatalyst

Method used

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  • Preparation of triazine ring covalent organic framework material doped porphyrin cobalt photocatalyst
  • Preparation of triazine ring covalent organic framework material doped porphyrin cobalt photocatalyst
  • Preparation of triazine ring covalent organic framework material doped porphyrin cobalt photocatalyst

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Embodiment 1

[0017] Example 1: The preparation method of a THFB-COF-2-Zn doped porphyrin cobalt carbon dioxide reduction photocatalyst of the present embodiment is completed according to the following steps:

[0018] Step 1. Weigh 1,3,5-triazine-2,4,6-tris(4'-hydroxy-5'-formylphenyl)benzene (THFB) and add it to a Schlank vacuum tube, then add the Add 2ml of mesitylene, seal the tube and carry out ultrasonic treatment until THFB is evenly mixed in the mesitylene system and there are no large particles; weigh (1R,2R)-(-)-1,2-cyclohexanediamine and put In another beaker, add 2 mL of ethanol, ultrasonically dissolve it all, and add Zn(ClO) 4 ) 2 ·6H 2 O, the white flocculent precipitate produced is a complex of cyclohexanediamine and zinc perchlorate. The white precipitate was added to the Schlank vacuum tube and sonication was continued until the system was homogeneous. Then add acetic acid aqueous solution to the phase reaction system and shake the vacuum tube to mix the acid evenly, thr...

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Abstract

The invention discloses a preparation method of a triazine ring covalent organic framework material doped porphyrin cobalt photocatalyst, and relates to a preparation method of a photocatalyst for reducing carbon dioxide into carbon monoxide. The invention aims to solve the problems of low reduction efficiency, low sunlight utilization rate and low carbon dioxide reduction rate of a photocatalyst due to low light absorption capability and low utilization rate of carbon dioxide in the atmosphere when the existing covalent organic framework material is used as a carbon dioxide catalyst. The method comprises the following steps: 1, preparing THFB-COF-2-Zn by utilizing an organic solvothermal method; and 2, uniformly mixing and dispersing cobalt porphyrin and the THFB-COF-2-Zn material by virtue of an ultrasonic oscillation dispersion method and an organic solvothermal method, so as to obtain the THFB-COF-2-Zn doped cobalt porphyrin carbon dioxide reduction photocatalyst material. The carbon dioxide reduction photocatalyst material containing THFB-COF-2-Zn doped cobalt porphyrin prepared by the preparation method disclosed by the invention is irradiated by visible light of a 300W xenon lamp, and the highest carbon monoxide production rate of carbon dioxide reduction can reach 352.8 [mu] mol.g <-1 > to 700 [mu] mol.g <-1 >. According to the invention, the cobalt porphyrin carbon dioxide reduction photocatalyst material doped with the THFB-COF-2-Zn covalent organic framework material can be obtained.

Description

technical field [0001] The invention relates to a preparation method of a photocatalytic carbon dioxide reduction catalyst and a photocatalytic performance test. Background technique [0002] With the progress of human society and the development of industry, coal, oil, natural gas and other fossil energy have been widely developed and utilized, resulting in a serious energy crisis and environmental crisis. Among them, the problem of the greenhouse effect is becoming more and more serious, and the carbon dioxide content in the atmosphere has repeatedly hit new highs, which seriously endangers our health and living environment. Therefore, converting carbon dioxide into energy to realize green recycling of energy is considered to be the most ideal way to solve energy and environmental problems. Scholars all over the world are eager to report that the current methods of converting carbon dioxide into energy mainly reduce carbon dioxide into low-carbon energy through the action...

Claims

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Application Information

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IPC IPC(8): B01J31/22C01B32/40
CPCB01J31/183C01B32/40B01J2231/62B01J2531/845B01J2531/025B01J35/39
Inventor 张凤鸣刘颜生吴迪
Owner HARBIN UNIV OF SCI & TECH
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