Dual metallic copper/cobalt metal-organic framework material as well as preparation method and application thereof

An organic framework and bimetallic technology, applied in the field of bimetallic copper/cobalt-organic framework material and its preparation, can solve the problems of secondary pollution, increase of processing cost, cobalt ions cannot be recycled and utilized in the environment, and achieve convenient operation and reaction The effect of short time and easy recycling

Active Publication Date: 2018-12-21
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the cobalt ion existing in the reaction system of cobalt ion activation permonosulfate in the prior art, which cannot be recycled and causes secondary pollution to the environment, it is necessary to further increase the treatment processes such as ion exchange, adsorption, precipitation and separation, which increases the treatment cost and other problems and shortcomings, the present invention provides a bimetallic copper / cobalt-organic framework material and its preparation method and application in the field of wastewater treatment

Method used

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  • Dual metallic copper/cobalt metal-organic framework material as well as preparation method and application thereof
  • Dual metallic copper/cobalt metal-organic framework material as well as preparation method and application thereof
  • Dual metallic copper/cobalt metal-organic framework material as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of Bimetallic Copper / Cobalt-Organic Frameworks

[0036] (1) Preparation of precursor solution: 1.946g (6mM) Co(NO 3 ) 2 ·6H 2 O, 1.125g (6mM) Cu(NO 3 ) 2 and 1.994g (12mM) of terephthalic acid (BDC) were dissolved in 60mL of N,N-dimethylformamide (DMF), then 0.8mL of hydrofluoric acid (HF) was added, and the above mixture was stirred until completely Dissolving to obtain a precursor solution;

[0037] (2) Preparation of bimetallic copper / cobalt-organic framework material: the precursor solution prepared in step (1) was transferred to a 100mL polytetrafluoroethylene-lined autoclave, and the reactor was placed in a programmed oven. Solvent thermal reaction at 150°C for 72 hours; cool down, cool down to room temperature naturally, and then wash with absolute ethanol, N,N-dimethylformamide (DMF) and deionized water repeatedly after vacuum pump filtration to obtain a brown precipitate; put the precipitate into Dry in a vacuum oven at 100° C. for 12 hours to...

Embodiment 2

[0042] (1) Preparation of precursor solution: 1.946g (6mM) Co(NO 3 ) 2 ·6H 2 O, 1.125g (6mM) Cu(NO 3 ) 2 and 1.329g (8mM) terephthalic acid (BDC) were dissolved in 60mL of N,N-dimethylformamide (DMF), then 0.8mL hydrofluoric acid (HF) was added, and the above mixture was stirred until completely Dissolving to obtain a precursor solution;

[0043] (2) Preparation of bimetallic copper / cobalt-organic framework material: the precursor solution prepared in step (1) was transferred to a 100mL polytetrafluoroethylene-lined autoclave, and the reactor was placed in a programmed oven. Solvent thermal reaction at 150°C for 72 hours; cool down, cool down to room temperature naturally, and then wash with absolute ethanol, N,N-dimethylformamide (DMF) and deionized water repeatedly after vacuum pump filtration to obtain a brown precipitate; put the precipitate into Dry in a vacuum oven at 100° C. for 12 hours to obtain a brown solid powder, which is a bimetallic copper / cobalt-organic fr...

Embodiment 3

[0045] (1) Preparation of precursor solution: 2.095g (7.2mM) Co(NO 3 ) 2 ·6H 2 O, 0.90g (4.8mM) Cu(NO 3 ) 2 and 1.994g (12mM) terephthalic acid (BDC) were dissolved in 60mL of N,N-dimethylformamide (DMF), then 0.8mL hydrofluoric acid (HF) was added, and the above mixture was stirred until completely Dissolving to obtain a precursor solution;

[0046] (2) Preparation of bimetallic copper / cobalt-organic framework material: the precursor solution prepared in step (1) was transferred to a 100mL polytetrafluoroethylene-lined autoclave, and the reactor was placed in a programmed oven. Solvent thermal reaction at 150°C for 72 hours; cool down, cool down to room temperature naturally, and then wash with absolute ethanol, N,N-dimethylformamide (DMF) and deionized water repeatedly after vacuum pump filtration to obtain a brown precipitate; put the precipitate into Dry in a vacuum oven at 100° C. for 12 hours to obtain a brown solid powder, which is a bimetallic copper / cobalt-organi...

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Abstract

The invention relates to a dual metallic copper/cobalt-organic framework material as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving cobalt nitrate hexahydrate, copper nitrate and terephthalic acid in an organic solvent to obtain a precursor solution; performing a solvothermal reaction on the precursor solution at the temperature of 150 DEG C; cooling, washing and drying at the end of the reaction to obtain the dual metallic copper/cobalt-organic framework material. Cobalt and copper active center ions highly dispersed in the dual metallic copper/cobalt-organic framework material can enhance effective contact between cobalt ions as well as copper and peroxymonosulfate to produce highly-oxidative sulfate radicals, so that refractory organic pollutants in wastewater are removed. The dual metallic copper/cobalt -organic framework material is suitable for treating various organic wastewater, has the advantages of high efficiency, high durability, convenience in operation and environmental friendliness, and provides a wide prospect for the treatment of toxic, harmful and refractory organic wastewater.

Description

technical field [0001] The invention belongs to the technical field of water pollution control, and in particular relates to a bimetallic copper / cobalt-organic framework material and its preparation method and application. Background technique [0002] With the prosperity of the world economy and the rapid development of industry, the pollution of water environment has become a worldwide problem, especially the widespread existence of refractory organic pollutants in water makes the treatment more difficult. Refractory organic pollutants are difficult to remove by traditional biological, physical and chemical methods due to their complex composition, stable structure and long half-life. In addition, most refractory organic pollutants have certain toxicity and are easy to stay in organisms, which poses a huge potential risk to human health. Advanced oxidation technology has the characteristics of fast, non-selective, and thorough oxidation. It can improve the biodegradabilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00B01J31/22C02F1/72C02F101/30
CPCB01J31/1691B01J31/223B01J2531/16B01J2531/845C02F1/725C02F2101/30C08G83/008
Inventor 李欢旋徐少丹
Owner HANGZHOU DIANZI UNIV
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