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Copper-cobalt bimetal-organic framework material based on 2, 5-dihydroxy terephthalic acid ligand as well as preparation method and application of copper-cobalt bimetal-organic framework material

A technology of hydroxyterephthalic acid and organic framework, which is applied in the field of copper-cobalt bimetallic-organic framework materials and its preparation, can solve the problems of increased processing cost and low catalyst activity, achieve short reaction time, simple preparation method, and easy Achieved effect

Inactive Publication Date: 2020-02-28
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the problems and shortcomings such as low catalyst activity in the advanced oxidation reaction system based on metal-organic framework material MOFs catalysts in the prior art, it is necessary to further increase energy auxiliary equipment such as light and heat, and increase processing costs, etc., the present invention provides a Copper-cobalt bimetallic-organic framework material based on 2,5-dihydroxyterephthalic acid ligand and its preparation method and application in the field of wastewater treatment

Method used

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  • Copper-cobalt bimetal-organic framework material based on 2, 5-dihydroxy terephthalic acid ligand as well as preparation method and application of copper-cobalt bimetal-organic framework material
  • Copper-cobalt bimetal-organic framework material based on 2, 5-dihydroxy terephthalic acid ligand as well as preparation method and application of copper-cobalt bimetal-organic framework material
  • Copper-cobalt bimetal-organic framework material based on 2, 5-dihydroxy terephthalic acid ligand as well as preparation method and application of copper-cobalt bimetal-organic framework material

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Preparation of Copper-Cobalt Bimetallic-Organic Framework Materials

[0036] (1) Preparation of precursor solution: 0.873g (3mM) Co(NO 3 ) 2 ·6H 2 O, 0.563g (3mM) Cu(NO 3 ) 2 ·6H 2 O and 0.498 g (3 mM) 2,5-dihydroxyterephthalic acid (DTPA) were dissolved in 60 mL of a mixture of N,N-dimethylformamide (DMF) and ethanol (DMF:ethanol=1:1), The above mixed solution is stirred until completely dissolved to obtain a precursor solution;

[0037] (2) Copper-cobalt bimetallic-organic framework material based on 2,5-dihydroxyterephthalic acid ligand: transfer the precursor solution obtained in step (1) to a 100 mL polytetrafluoroethylene-lined autoclave , put the reaction kettle into a program-controlled oven, and solvothermally react at 110 °C for 24 hours; cooled, naturally cooled to room temperature, filtered by a vacuum pump, and repeated with absolute ethanol, N,N-dimethylformamide (DMF) and deionized water. Wash to obtain brown precipitate; put the precipitate into a...

Embodiment 2

[0040] (1) Preparation of precursor solution: 0.873g (3mM) Co(NO 3 ) 2 ·6H 2 O, 0.563g (3mM) Cu(NO 3 ) 2 ·6H 2 O and 0.498 g (3 mM) 2,5-dihydroxyterephthalic acid (DTPA) were dissolved in 60 mL of a mixture of N,N-dimethylformamide (DMF) and ethanol (DMF:ethanol=1:1), The above mixed solution is stirred until completely dissolved to obtain a precursor solution;

[0041] (2) Copper-cobalt bimetallic-organic framework material based on 2,5-dihydroxyterephthalic acid ligand: transfer the precursor solution obtained in step (1) to a 100 mL polytetrafluoroethylene-lined autoclave , put the reaction kettle into a program-controlled oven, and solvothermally react at 150 °C for 24 hours; cooled, naturally cooled to room temperature, filtered with a vacuum pump, and repeated with absolute ethanol, N,N-dimethylformamide (DMF) and deionized water. Wash to obtain brown precipitate; put the precipitate into a vacuum drying oven at 100°C for 12 hours to obtain black solid powder, whic...

Embodiment 3

[0044] (1) Preparation of precursor solution: 0.873g (3mM) Co(NO 3 ) 2 ·6H 2 O, 0.563g (3mM) Cu(NO 3 ) 2 ·6H 2 O and 0.498 g (3 mM) 2,5-dihydroxyterephthalic acid (DTPA) were dissolved in 60 mL of a mixture of N,N-dimethylformamide (DMF) and ethanol (DMF:ethanol=1:1), The above mixed solution is stirred until completely dissolved to obtain a precursor solution;

[0045] (2) Copper-cobalt bimetallic-organic framework material based on 2,5-dihydroxyterephthalic acid ligand: transfer the precursor solution obtained in step (1) to a 100 mL polytetrafluoroethylene-lined autoclave , put the reaction kettle into a program-controlled oven, solvothermally react at 170 °C for 24 hours; cool, naturally cool to room temperature, filter with a vacuum pump and repeat with absolute ethanol, N,N-dimethylformamide (DMF) and deionized water. Wash to obtain brown precipitate; put the precipitate into a vacuum drying oven at 100°C for 12 hours to obtain black solid powder, which is a copper...

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Abstract

The invention relates to a copper-cobalt bimetal-organic framework material based on a 2, 5-dihydroxy terephthalic acid ligand as well as a preparation method and application of the copper-cobalt bimetal-organic framework material. The preparation method comprises following steps: dissolving cobalt nitrate hexahydrate, copper nitrate hexahydrate and 2, 5-dihydroxy terephthalic acid in an organic solvent to obtain a precursor solution; carrying out solvothermal reaction on the precursor solution at the temperature of 110-170 DEG C; and after the reaction is finished, performing post-treatment to obtain the copper-cobalt bimetal-organic framework material. Highly dispersed cobalt and copper active center ions in the copper-cobalt bimetal-organic framework material can enhance the effective contact between cobalt ions and copper, and a peroxymonosulfate to generate sulfate radicals with strong oxidizability, so that refractory organic pollutants in wastewater are removed. The copper-cobalt bimetal-organic framework material based on the 2, 5-dihydroxy terephthalic acid ligand is suitable for treating various organic wastewater, is high in efficiency, good in durability, convenient tooperate and environmentally friendly, and has a promising prospect in treating toxic, harmful and non-biodegradable organic wastewater.

Description

technical field [0001] The invention belongs to the technical field of water pollution control, and in particular relates to a copper-cobalt bimetallic-organic framework material based on a 2,5-dihydroxyterephthalic acid ligand and a preparation method and application thereof. Background technique [0002] Metal-Organic Frameworks (MOFs) are a new class of materials with periodic structures developed in recent years, which are self-assembled by inorganic metal nodes and organic bridging ligands. MOFs have become one of the current research hotspots in the field of catalysis due to their large specific surface area, porosity, open windows and stable chemical composition. catalytic effect. The research shows that the degradation of pollutants by MIL-53(Fe)-catalyzed hydrogen peroxide system is based on the oxidation of ·OH generated by two ways: Fenton-like reaction and photoelectron acquisition by MIL-53(Fe) conduction band. At the same time, some scholars have compared the...

Claims

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Application Information

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IPC IPC(8): B01J31/16B01J31/28C02F1/72C02F101/30
CPCB01J31/1691B01J31/28C02F1/725C02F1/722C02F2101/30
Inventor 李欢旋周卿伟
Owner HANGZHOU DIANZI UNIV
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