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Double-ligand metal organic framework photocatalyst and application thereof

A technology of metal-organic framework and photocatalyst, which is applied in the direction of organic compound/hydride/coordination complex catalyst, catalytic reaction, physical/chemical process catalyst, etc., which can solve the problem of high recombination rate of photogenerated carriers and limited photoresponse ability , affect the photocatalytic performance and other issues, to achieve the effect of improving the reduction ability, expanding the range of light adsorption, and expanding the range of light absorption

Active Publication Date: 2020-11-10
苏州荣格君新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, because traditional MOFs only contain one ligand, their photoresponse ability is limited, and their bandwidth is large, and the recombination rate of photogenerated carriers is high, which affects their photocatalytic performance.

Method used

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  • Double-ligand metal organic framework photocatalyst and application thereof
  • Double-ligand metal organic framework photocatalyst and application thereof
  • Double-ligand metal organic framework photocatalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A kind of preparation method of zinc porphyrin / 2-aminoterephthalic acid double ligand titanium-based metal organic framework (D-TiMOF) photocatalyst, described preparation method comprises the following steps:

[0060] 1. Preparation of zinc porphyrin: 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin (60mg, 0.076mmol) and zinc acetate dihydrate (67mg, 0.304mmol) were dissolved in 10mL of DMF in, stirring;

[0061] Heating in a 100°C oil bath equipped with a condenser for 5 hours;

[0062] Wash the flask with 20mL deionized water, transfer the suspension to a centrifuge tube, centrifuge at 1000r / min for 10 minutes, filter out and remove the supernatant to obtain a precipitate;

[0063] Add 10 mL of deionized water for ultrasonic dispersion and continue centrifugation, repeat the above centrifugation and washing steps 3 times until the filtrate is clear;

[0064] Pack the precipitate in an ice pack and cool it below 0°C for 5 hours;

[0065] Then the precipitate was taken...

Embodiment 2

[0074] A method for preparing a double-ligand metal-organic framework photocatalyst, the preparation method comprising the steps of:

[0075] 1, the preparation of iron porphyrin:

[0076] 5,10,15,20-Tetrakis(4-carboxyphenyl)porphyrin (60mg, 0.076mmol) and metal iron nitrate nonahydrate (123mg, 0.304mmol) were dissolved in 10mL of DMF and stirred;

[0077] Heating in a 100°C oil bath equipped with a condenser for 5 hours;

[0078] Wash the flask with 20mL deionized water, transfer the suspension to a centrifuge tube, centrifuge at 1000r / min for 10 minutes, filter out and remove the supernatant to obtain a precipitate;

[0079] Add 10 mL of deionized water for ultrasonic dispersion and continue centrifugation, repeat the above centrifugation and washing steps 3 times until the filtrate is clear;

[0080] Pack the precipitate in an ice pack and cool it below 0°C for 5 hours;

[0081] Then the precipitate was taken out and dried in a freeze dryer for 12 hours; the iron porphyr...

Embodiment 3

[0089] A kind of preparation method of zinc porphyrin / 2-aminoterephthalic acid double ligand titanium-based metal organic framework (D-TiMOF) photocatalyst, described preparation method comprises the following steps:

[0090] 1. Preparation of zinc porphyrin: 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin (60mg, 0.076mmol) and zinc acetate dihydrate (67mg, 0.304mmol) were dissolved in 10mL of DMF in, stirring;

[0091] Heating in a 90°C oil bath equipped with a condenser for 4.5 hours;

[0092] Wash the flask with 20mL deionized water, transfer the suspension to a centrifuge tube, centrifuge at 1000r / min for 10 minutes, filter out and remove the supernatant to obtain a precipitate;

[0093] Add 10 mL of deionized water for ultrasonic dispersion and continue centrifugation, repeat the above centrifugation and washing steps 3 times until the filtrate is clear;

[0094] Pack the sediment in an ice pack and cool it below 0°C for 3 hours;

[0095] Then the precipitate was taken o...

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Abstract

An embodiment of the invention relates to a photocatalyst, in particular to a double-ligand metal organic framework photocatalyst and application thereof. According to the double-ligand metal organicframework photocatalyst provided by the invention, a metal organic framework comprises double ligands including metalloporphyrin and organic ligand. According to the double-ligand metal organic framework photocatalyst provided by the invention, a double-ligand mechanism is introduced, so the separation of photo-generated holes and electrons is promoted, a light absorption range is expanded, and the photocatalytic reduction capability of CO2 can be remarkably improved.

Description

technical field [0001] The invention relates to a photocatalyst, in particular to a double-ligand metal-organic framework photocatalyst and its application. Background technique [0002] In order to meet people's energy needs and protect the environment, the use of renewable and clean solar energy to produce chemical fuels has attracted people's attention. Photocatalytic CO 2 Reduction of CO by light energy 2 Converting to CO, methane, methanol and other products is a promising technology. In recent years, metal-organic frameworks (MOFs) have been used as photocatalysts with a certain visible light response in the degradation of organic pollutants and CO 2 Reduction aspects have been extensively studied. [0003] However, because traditional MOFs only contain one ligand, their photoresponse ability is limited, and their bandwidth is large, and the recombination rate of photogenerated carriers is high, which affects their photocatalytic performance. Therefore, it is beco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C01B32/40C08G83/00
CPCB01J31/2243B01J31/1691C08G83/008C01B32/40B01J2531/46B01J2231/62B01J2531/26B01J2531/025B01J35/39
Inventor 陈思远高鸿毅其他发明人请求不公开姓名
Owner 苏州荣格君新材料有限公司
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