Fluorine-substituted Zn/Co porphyrin-based conjugated organic polymer as well as preparation method thereof and application thereof

A conjugated polymer and porphyrin-based technology is applied in the field of organic polymer-based photocatalytic materials and hydrogen production applications, which can solve the problem of affecting the photocatalytic effect of sunlight utilization efficiency and underutilizing porphyrin-based conjugated supramolecules. There are no patent publications or research reports on light absorption performance, visible/near-infrared light-driven hydrogen production, etc., to achieve the effects of good light absorption performance, low energy consumption cost, and reduced charge recombination

Active Publication Date: 2020-04-03
SHENZHEN RES INST OF WUHAN UNIVERISTY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, the literature survey results show that the current domestic research on porphyrins is mainly focused on single-molecule porphyrin-sensitized inorganic semiconductor photocatalysts, and does not make full use of the excellent light-absorbing properties of porphyrin-based conjugated supramolecules, which affects the absorption of sunlight. Utilization efficiency and its photocatalytic effect
At present, there are no patent publications or research reports on the preparation methods of porphyrin-based conjugated polymers and their applications in visible / near-infrared light-driven hydrogen production at home and abroad.

Method used

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  • Fluorine-substituted Zn/Co porphyrin-based conjugated organic polymer as well as preparation method thereof and application thereof
  • Fluorine-substituted Zn/Co porphyrin-based conjugated organic polymer as well as preparation method thereof and application thereof
  • Fluorine-substituted Zn/Co porphyrin-based conjugated organic polymer as well as preparation method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] first use Figure 1-3 Synthetic route to synthesize MPorF-CPs polymer.

[0038] Wherein, when x=H, the product is marked as MPor-CPs, which is used as a comparative reference in this study. Figure 4 Show MPorF-CPs polymer has better light absorption properties than MPor-CPs. Get MPorF-CPs polymer 10mg and join in the TEOA aqueous solution of 50mL (TEOA volume concentration 15%), before testing, this dispersion system ultrasonic treatment 5min, and remove the air in the reactor, after light for a period of time, adopt gas chromatography ( GC, SP6890, TCD detector, 5A molecular sieve, argon as carrier gas) to detect the hydrogen production of the system. Depend on Figure 5 It can be seen that the hydrogen production activity after visible-near-infrared (Vis-NIR) irradiation for 1 h is 69 μmol h -1 . Figure 6 showed that the MPorF-CPs polymer achieved 10.4%, 7.8%, 8.2%, 8.7%, 4.8%, 2.9% and 0.76% of the apparent quantum The yield is higher than the apparent quantu...

Embodiment 2

[0040] first use Figure 1-3 Synthetic route to synthesize MPorF-CPs polymer.

[0041] Wherein, when x=H, the product is marked as MPor-CPs, which is used as a comparative reference in this study. Figure 4 Show MPorF-CPs polymer has better light absorption properties than MPor-CPs. Get MPorF-CPs polymer 20mg and join in the TEOA aqueous solution of 50mL (TEOA volume concentration 15%), before testing, this dispersion system ultrasonic treatment 5min, and remove the air in the reactor, after light for a period of time, adopt gas chromatography ( GC, SP6890, TCD detector, 5A molecular sieve, argon as carrier gas) to detect the hydrogen production of the system. Depend on Figure 5 It can be seen that the hydrogen production activity after visible-near-infrared (Vis-NIR) irradiation for 1 h is 138 μmol h -1 , indicating that the visible light photocatalytic hydrogen production performance tends to increase with the increase of the amount of MPorF-CPs polymer. Figure 6 show...

Embodiment 3

[0043] first use Figure 1-3 Synthetic route to synthesize MPorF-CPs polymer.

[0044] Wherein, when x=H, the product is marked as MPor-CPs, which is used as a comparative reference in this study. Figure 4 Show MPorF-CPs polymer has better light absorption properties than MPor-CPs. Get MPorF-CPs polymer 30mg and join in the TEOA aqueous solution of 50mL (TEOA volume concentration 15%), before testing, this dispersion system ultrasonic treatment 5min, and remove the air in the reactor, after light for a period of time, adopt gas chromatography ( GC, SP6890, TCD detector, 5A molecular sieve, argon as carrier gas) to detect the hydrogen production of the system. Depend on Figure 5 It can be seen that the hydrogen production activity after visible-near-infrared (Vis-NIR) irradiation for 1 h is 165 μmol h -1 , indicating that the visible-light photocatalytic hydrogen production performance of MPor-CPs polymers further increases with the increase of polymer dosage. Figure 6 ...

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Abstract

The invention discloses a fluorine-substituted Zn / Co porphyrin-based conjugated organic polymer as well as a preparation method thereof and application thereof. Required raw materials are wide in source, the synthesis process is easy to control, a Sonogashira coupling reaction is adopted to expand the light absorption range of a porphyrin complex to a near-infrared light region, and the transfer of photo-induced electrons between Zn and Co center metals can be accelerated, and the recombination of the electrons and holes is reduced, so that photons in an ultraviolet-visible-near-infrared lightregion are effectively utilized to realize efficient photocatalytic hydrogen production, and a good application prospect is shown in the aspect of photocatalytic hydrogen production with wide spectral response.

Description

technical field [0001] The invention belongs to the technical field of organic polymer-based photocatalytic materials and hydrogen production applications thereof, and specifically relates to a fluorine-substituted Zn / Co porphyrin-based conjugated organic polymer and a preparation method and application thereof. Background technique [0002] The main methods of solar hydrogen production are: coupling of solar power generation and electrolysis of water for hydrogen production, solar photoelectrochemical hydrogen production, solar thermochemical water splitting and biomass hydrogen production, and solar photocatalytic water splitting for hydrogen production. Among them, the use of sunlight to photocatalytically split water to produce hydrogen is known as the most promising hydrogen production technology. The method mainly uses semiconductor photocatalytic materials to generate electron-hole pairs under the excitation of sunlight, and uses them to directly decompose water into ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12B01J31/22C01B3/04
CPCC08G61/124B01J35/004B01J31/1691B01J31/183C01B3/042B01J2531/025B01J2531/26B01J2531/845C08G2261/415C08G2261/124C08G2261/146C08G2261/148C08G2261/18C08G2261/3241C08G2261/312C08G2261/3328C08G2261/376C08G2261/37C01B2203/1076C01B2203/1052Y02E60/36
Inventor 彭天右汪进明
Owner SHENZHEN RES INST OF WUHAN UNIVERISTY
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