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Iron (III) tetracarboxyl phenyl porphyrin implanted metal organic framework preparation and application

A metal-organic framework, phenylporphyrin technology, used in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, special compound water treatment, etc. Problems such as high energy consumption

Inactive Publication Date: 2019-01-04
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the processes currently developed are limited by strict pH ranges, long run times and high energy consumption

Method used

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  • Iron (III) tetracarboxyl phenyl porphyrin implanted metal organic framework preparation and application
  • Iron (III) tetracarboxyl phenyl porphyrin implanted metal organic framework preparation and application
  • Iron (III) tetracarboxyl phenyl porphyrin implanted metal organic framework preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Preparation of TCPP: Take 6.08 g (40.5 mmol) of 4-formylbenzoic acid and 2.8 g (40.5 mmol) of double-distilled pyrrole, add 120 mL of propionic acid, heat and reflux for 2 to 3 hours; then cool the reaction mixture to room temperature , add 150mL of methanol, while cooling and stirring in an ice bath for 0.5~1 hour; centrifuge to obtain a precipitate, wash with methanol and heated distilled water several times until the filtrate is clear. Finally, dry the obtained purple powder in an oven at 60-80°C for 10-12 hours to obtain 1.587g TCPP.

[0048] (2) Preparation of FeTCPPCl: Take TCPP (0.261 g, 0.33 mmol) and FeCl 2 4H 2 O (0.31 g, 1.82 mmol), was added to 20 mL N,N dimethylformamide, refluxed for 4~5 hours, cooled to room temperature to obtain a dark brown solution, centrifuged, precipitated and washed several times with plenty of water until the filtrate was clear , The solid product was vacuum-dried overnight to obtain a dark brown solid that is FeTCPPCl.

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Embodiment 2

[0052] (1) Preparation of TCPP: Same as Example 1;

[0053] (2) Preparation of FeTCPPCl: same as Example 1;

[0054] (3) Preparation of FeTCPPCl-UiO-66 composite material: zirconium tetrachloride ZrCl4 (0.06 g, 0.258 mmol), terephthalic acid BDC (0.06 g, 0.362 mmol), FeTCPPCl (0.0168 g, 0.0185 mmol)) and Benzoic acid (1.0 g, 8.196 mmol) was ultrasonically dissolved in 4 mL of dimethylformamide, treated at 120 °C for 12 hours, cooled to room temperature, centrifuged, and the precipitate was washed several times with dimethyl formamide and acetone, and dried in vacuum , to obtain FeTCPPCl-UiO-66 composite catalyst (the mass percentage of FeTCPPCl is 1.5%);

[0055] (4) Fenton-like and photocatalytic synergistic degradation performance of RhB: RhB can be completely degraded in FeTCPPCl-UiO-66 / visible light / H2O2 system under visible light, and the degradation rate of RhB reaches 89% within 90 minutes.

Embodiment 3

[0057] (1) Preparation of TCPP: Same as Example 1;

[0058] (2) Preparation of FeTCPPCl: same as Example 1;

[0059] (3) Preparation of FeTCPPCl-UiO-66 composite material: zirconium tetrachloride ZrCl4 (0.12g, 0.516mmol), terephthalic acid BDC (0.12g, 0.724mmol), iron (III) tetracarboxyphenyl porphyrin (FeTCPPCl (0.045g, 0.05mmol)) and benzoic acid (2.0 g, 16.392mmol) were ultrasonically dissolved in 8mL dimethylformamide, kept at 120°C for 12 hours, cooled to room temperature, centrifuged, and precipitated with dimethylformamide base formamide and acetone for several times, and vacuum drying to obtain FeTCPPCl-UiO-66 composite catalyst (the mass percentage of FeTCPPCl is 2.0%);

[0060] (4) Fenton-like and photocatalytic synergistic degradation performance of RhB: RhB can be completely degraded in FeTCPPCl-UiO-66 / visible light / H2O2 system under visible light, and the degradation rate of RhB reaches 96% within 90 minutes.

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Abstract

The invention provides an iron (III) tetracarboxyl phenyl porphyrin implanted metal organic framework composite material preparation method. The method includes: preparing FeTCPPCl from TCPP and FeCl24H2O according to a solvothermal method, and adopting the solvothermal method for implanting FeTCPPCl into a metal organic framework UiO-66 to obtain a composite material FeTCPPCl-UiO-66. By UiO-66 sensitization, light response capacity of UiO-66 is effectively improved, a light absorption range is expanded while charge separation efficiency is improved, and high catalytic activity in Photo-Fenton-like catalytic degradation is achieved. Compared with dark reaction and UiO-66, the composite material has advantages that dye RhB degradation effects are evidently enhanced through light-induced fenton-like reaction, and the RhB degradation rate reaches 100% within 90min.

Description

technical field [0001] The invention relates to the preparation of a zirconium-based metal-organic framework composite material, in particular to a method for preparing a composite material in which iron (III) tetracarboxyphenyl porphyrin is implanted into a zirconium-based metal-organic framework, mainly as a high-efficiency The photoinduced Fenton-like catalyst was used for the photocatalytic degradation of the organic dye RhB. Background technique [0002] In recent years, the problem of water pollution has become increasingly serious. Due to the characteristics of high chroma, high toxicity and refractory degradation, dye wastewater has a great impact on the environment and human health. Therefore, the treatment of dye wastewater has become a hot research topic at present. Therefore, it is imminent to develop technologies for effectively degrading organic dyes in wastewater. Advanced oxidation processes (AOPs) show promising prospects for the degradation of organic dy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C02F1/30C08G83/00C02F101/38
CPCC02F1/30C08G83/008B01J31/1691B01J31/2243C02F2101/38C02F2305/10B01J35/39
Inventor 王磊金鹏霞段树华王龙龙佘厚德黄静伟王其召
Owner NORTHWEST NORMAL UNIVERSITY
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