Dibenzo fused dinaphthyl polymer photocatalyst for hydrogen production by photocatalytic decomposition of water and preparation method thereof

A benzo-fused dinaphthyl, photocatalyst technology, applied in the direction of organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the limitation of the development of organic polymer photocatalysts and other problems, to achieve excellent photocatalytic performance, environmental protection, and the effect of improving coplanarity.

Pending Publication Date: 2022-07-12
SHAANXI NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the reported organic polymer photocatalysts with high photocatalytic activity are based on pyrene as the electron donor, which greatly limits the development of organic polymer photocatalysts, so it is necessary to develop some new electron donors.

Method used

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  • Dibenzo fused dinaphthyl polymer photocatalyst for hydrogen production by photocatalytic decomposition of water and preparation method thereof
  • Dibenzo fused dinaphthyl polymer photocatalyst for hydrogen production by photocatalytic decomposition of water and preparation method thereof
  • Dibenzo fused dinaphthyl polymer photocatalyst for hydrogen production by photocatalytic decomposition of water and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Under nitrogen protection, 20 mL of N,N-dimethylformamide and 4 mL of 2mol / L potassium carbonate aqueous solution were added to a solution containing 322.0 mg (0.5 mmol) of 2,7,10,15-tetrabromodibenzo-fused dinaphthalene. , 468.2 mg (1.0 mmol) of 3,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaboran-2-yl)dibenzothiophene sulfone and 20.0 mg (17.3 μmol) in the reaction flask of tetrakis (triphenylphosphine) palladium, heated to 150 ° C for reflux reaction for 48 hours, cooled to room temperature after the reaction, washed with dichloromethane, methanol and water for many times, and dried at 100 ° C under vacuum conditions After 24 hours, a yellow-green solid powder DBC-BTDO was obtained.

Embodiment 2

[0030] Under nitrogen protection, 20 mL of N,N-dimethylformamide and 2 mL of 2mol / L potassium carbonate aqueous solution were added to a solution containing 128.8 mg (0.2 mmol) of 2,7,10,15-tetrabromodibenzo-fused dinaphthalene. , 234.1 mg (0.5 mmol) 3,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaboran-2-yl) dibenzothiophene sulfone, 37.4 mg (0.1 mmol) 3,7-dibromodibenzothiophene sulfone and 20.0 mg (17.3 μmol) tetrakis(triphenylphosphine) palladium in a reaction flask, heated to 150° C. for reflux reaction for 48 hours, cooled to room temperature after the reaction was completed, and used Dichloromethane, methanol and water were washed for several times, and dried under vacuum at 100 °C for 24 hours to obtain a yellow-green powder DBC-BTDOs-1, and the dibenzo-fused dinaphthalene unit and dibenzothiophene in DBC-BTDOs-1 were obtained. The molar ratio of sulfone units was 1:3.

Embodiment 3

[0032] Under nitrogen protection, 20 mL of N,N-dimethylformamide and 2 mL of 2mol / L potassium carbonate aqueous solution were added to a solution containing 64.4 mg (0.1 mmol) of 2,7,10,15-tetrabromodibenzo-fused dinaphthalene. , 187.3 mg (0.4 mmol) 3,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaboran-2-yl) dibenzothiophene sulfone, 74.8 mg (0.2 mmol) 3,7-dibromodibenzothiophene sulfone and 20.0 mg (17.3 μmol) tetrakis(triphenylphosphine) palladium in a reaction flask, heated to 150° C. for reflux reaction for 48 hours, cooled to room temperature after the reaction was completed, and used Dichloromethane, methanol and water were washed for several times, and dried at 100 °C under vacuum for 24 hours to obtain a yellow-green powder DBC-BTDOs-2, and the dibenzo-fused dinaphthalene units in DBC-BTDOs-2 were combined with dibenzothiophene. The molar ratio of sulfone units was 1:6.

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Abstract

The invention discloses a dibenzo fused dinaphthyl polymer photocatalyst for hydrogen production by photocatalytic decomposition of water and a preparation method thereof, the photocatalyst is prepared by a simple binary or ternary copolymerized Suzuki coupling reaction, and the construction unit of the photocatalyst comprises dibenzo fused dinaphthyl and dibenzothiophene sulfone. The dibenzo fused dinaphthyl monomer and the dibenzothiophene sulfuryl monomer for polymerization have the same or different polymerizable functional groups, and can be subjected to Suzuki coupling reaction. The polymer photocatalyst has the characteristics of high photocatalytic hydrogen production activity, high apparent quantum efficiency and continuous and adjustable structure and composition, is simple in preparation process, high in yield and stable in performance, can release hydrogen under sunlight, and can be used in the field of photocatalytic hydrogen production.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic water-splitting and hydrogen-producing materials, and in particular relates to a dibenzo-fused dinaphthalene-based polymer photocatalyst with high photocatalytic water-splitting water-producing activity and a preparation method thereof. Background technique [0002] The use of solar energy to split water to produce hydrogen is a simple, economical and efficient technical means to convert solar energy into chemical energy, which has been highly concerned by scientists around the world. In recent decades, a large number of scientific researches have been carried out at home and abroad to improve the photocatalytic efficiency of semiconductor photocatalysts, and thousands of semiconductor photocatalysts have been developed for photocatalytic water splitting for hydrogen / oxygen production. [0003] Semiconductor photocatalysts are key materials for the photocatalytic splitting of water to produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12B01J31/06C01B3/04
CPCC08G61/126B01J31/06B01J35/004C01B3/042C01B2203/1088C08G2261/12C08G2261/3142C08G2261/411Y02P20/133
Inventor 蒋加兴韩昌志解沛璇张崇王芳
Owner SHAANXI NORMAL UNIV
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