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Europium complex with function of catalyzing photodegradation of organic dyes as well as preparation method and application of europium complex

A technique for europium complexes and organic dyes is applied in the field of europium complexes with the function of catalyzing photodegradation of organic dyes and the preparation thereof, and achieves the effects of mild synthesis conditions, stable structure and high yield

Active Publication Date: 2020-10-30
JIAXING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, some rare earth metal complexes have been used for photodegradation catalysis of organic dyes, but there are still many gaps in the research on europium complexes with diverse structures of different rare earth metals

Method used

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  • Europium complex with function of catalyzing photodegradation of organic dyes as well as preparation method and application of europium complex
  • Europium complex with function of catalyzing photodegradation of organic dyes as well as preparation method and application of europium complex
  • Europium complex with function of catalyzing photodegradation of organic dyes as well as preparation method and application of europium complex

Examples

Experimental program
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Effect test

Embodiment 1

[0058] A kind of europium complex with the function of catalytic photodegradation of organic dyes and its preparation method, weighing Na 2 MoO 6 2H 2 Dissolve O2.5g in 10mL water, add 6M HCl 3mL solution to adjust the acidity of the system, and stir to obtain solution A. Weigh 1.2 g of tetrabutylammonium bromide and dissolve it in 2 mL of water to form solution B. After adding solution B to solution A, stir to obtain a white turbid solution. Heat the white turbid solution to 80°C and stir until it turns into a yellow precipitate. A yellow precipitate was obtained after suction filtration, which was washed with 20 mL of water to obtain the crude product. The crude product was dissolved in 80 mL of acetone, heated to 60°C, and stirred until completely dissolved to obtain solution C. After dissolving and cooling to room temperature, solution C was refrigerated for 24 h, and a yellow precipitate was collected.

[0059] After suction filtration, a yellow solid can be obtaine...

Embodiment 2

[0062] An application of a europium complex with the function of catalyzing photodegradation of organic dyes, comprising the following steps:

[0063] The preparation of step 1, methylene blue solution:

[0064] Weigh methylene blue (MB) in a beaker, dissolve it, then transfer it to a 500mL volumetric flask, set the volume to the mark, and prepare an aqueous methylene blue solution with a concentration of 10mol / L for use;

[0065] Step II, europium complex C 52 h 44 Eu 2 N 16 o 19 Photocatalytic assay of:

[0066] Weigh 2mg, 5mg, 8mg of europium complex C 52 h 44 Eu 2 N 16 o 19 Add 40mL methylene blue aqueous solution to the beaker, and stir with a magnetic stirrer for 30min in the dark until the adsorption-desorption process equilibrium is reached. The photocatalytic reaction is carried out under light irradiation. After standing still for 30 minutes, 4 mL of the supernatant was pipetted into a test tube, and the obtained clear solution was used for ultraviolet sp...

Embodiment 3

[0068] An application of a europium complex with the function of catalyzing photodegradation of organic dyes, comprising the following steps:

[0069] The preparation of step 1, methyl orange solution:

[0070] Weigh methyl orange (MO) in a beaker, dissolve, then transfer to a 500mL volumetric flask, set the volume to the mark, and prepare a methyl orange aqueous solution with a concentration of 10mol / L for use;

[0071] Step II, europium complex C 52 h 44 Eu 2 N 16 o 19 Photocatalytic assay of:

[0072] Weigh 2mg, 5mg, 8mg of europium complex C 52 h 44 Eu 2 N 16 o 19 Add 40 mL of methyl orange aqueous solution to the beaker, and stir with a magnetic stirrer for 30 min in the dark until the equilibrium of the adsorption-desorption process is reached. The photocatalytic reaction is carried out under light irradiation. After standing still for 30 minutes, 4 mL of the supernatant was pipetted into a test tube, and the obtained clear solution was used for ultraviolet s...

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Abstract

The invention belongs to the technical field of complex catalytic materials, and discloses a europium complex with a function of catalyzing photodegradation of organic dyes and a preparation method ofthe europium complex. According to the invention, a nine-coordination complex C52H44Eu2N16O19 is prepared by creatively adopting a hydrothermal synthesis method and using n-hydroxyethyl-3, 3-dimethyl-6-nitroindoline spiropyran, lanthanide series rare earth metal salt and Lindeqvit type [(n-C4H9) 4N] 2 [Mo6O19] polyoxometallate as raw materials. Characterization finds that the europium complex isa europium complex with a variety of structures formed by coordination of metal Eu and a Schiff base ligand after a spiropyrane ligand and ethylenediamine are subjected to an in-situ reaction to formthe Schiff base ligand. The invention also discloses an application of the europium complex with the function of catalyzing photodegradation of organic dyes in photocatalytic degradation of dyes.

Description

technical field [0001] The invention belongs to the technical field of complex catalytic materials, and in particular relates to a europium complex with the function of catalyzing photodegradation of organic dyes and its preparation method and application. Background technique [0002] Water pollution is a huge environmental challenge faced by dye production and use industries. Considering the use performance of organic dyes, most organic dyes are structurally stable, so the conventional biological treatment of dye wastewater is not effective. In order to effectively remove dyes from wastewater, physical and chemical techniques including ion exchange, coagulation / flocculation, adsorption, chemical oxidation, photocatalysis, etc. have attracted the attention of environmental protection technicians. [0003] Among them, the photocatalytic technology is based on the in situ generation of highly active OH and O 2 - , decomposes the dye into CO 2 and H 2 O, has the advantage...

Claims

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Application Information

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IPC IPC(8): B01J31/22C07F5/00C02F1/30C02F101/30
CPCB01J31/2217C07F5/003C02F1/30B01J2531/38C07B2200/13C02F2101/308C02F2305/10B01J35/39Y02W10/37
Inventor 谢景力唐鹏飞徐昊
Owner JIAXING UNIV
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