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Metal-organic framework material-based derived copper-cobalt composite carbon material and method thereof, and wastewater treatment method

An organic framework and wastewater treatment technology, which is applied in the direction of special compound water treatment, water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of excessive metal ion concentration, increase of TOC concentration, increase of treatment cost, etc. Short, enhanced effective contact, high utilization effect

Pending Publication Date: 2021-10-19
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the process of using the above-mentioned technology to treat wastewater, the unstable precipitation of metal ions such as cobalt ions in the reaction system of metal-organic framework material activation monoperoxobisulfate will cause secondary pollution to the environment, and it is necessary to further increase ion exchange, adsorption, and precipitation. Separation and other treatment processes, thus increasing the treatment cost and other issues
To solve this problem, Chinese Patent Application No. 201910988131.8 discloses a copper-cobalt bimetallic-organic framework material based on 2,5-dihydroxyterephthalic acid ligands and its preparation method and application. Although this technical solution has its advantages , but it also has the following disadvantages: the stability needs to be further improved, and the organic ligands of the catalyst skeleton collapse during the recycling process, resulting in an increase in the TOC concentration in the system, and increasing the concentration of the catalyst will lead to excessive metal ion concentration, especially When used under acidic conditions, the precipitation of metal ions greatly reduces the catalytic performance

Method used

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  • Metal-organic framework material-based derived copper-cobalt composite carbon material and method thereof, and wastewater treatment method
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  • Metal-organic framework material-based derived copper-cobalt composite carbon material and method thereof, and wastewater treatment method

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Experimental program
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Embodiment 1

[0037] A method for deriving copper-cobalt composite carbon materials based on metal-organic framework materials, which is carried out as follows:

[0038] (1) Preparation of precursor: 0.873g (3mM) Co(NO 3 ) 2 ·6H 2 O, 0.887g (3mM) Cu(NO 3 ) 2 ·6H 2 O and 0.498g (3mM) 2,5-dihydroxyterephthalic acid were dissolved in 60mL of N,N-dimethylformamide (DMF) and a mixture of absolute ethanol (volume ratio of 1:1), the The above mixed solution was stirred until completely dissolved, then transferred to a 100mL polytetrafluoroethylene-lined autoclave, put the autoclave into a programmable oven, and reacted with solvent heat at 150°C for 24 hours; cooled, naturally cooled to room temperature, and filtered with a vacuum pump. Wash with absolute ethanol, N,N-dimethylformamide (DMF) and deionized water repeatedly to obtain a brown precipitate; put the precipitate in a vacuum oven at 100°C and dry for 12 hours to obtain a brown solid powder, which is a metal-based -Organic framework ...

Embodiment 2

[0042] A method for deriving copper-cobalt composite carbon materials based on metal-organic framework materials, which is carried out as follows:

[0043] (1) Preparation of precursor: 0.873g (3mM) Co(NO 3 ) 2 ·6H 2 O, 0.887g (3mM) Cu(NO 3 ) 2 ·6H 2 O and 0.498g (3mM) 2,5-dihydroxyterephthalic acid were dissolved in 60mL of N,N-dimethylformamide (DMF) and a mixture of absolute ethanol (volume ratio of 1:1), the The above mixed solution was stirred until completely dissolved, then transferred to a 100mL polytetrafluoroethylene-lined autoclave, put the autoclave into a programmable oven, and reacted with solvent heat at 150°C for 24 hours; cooled, naturally cooled to room temperature, and filtered with a vacuum pump. Wash with absolute ethanol, N,N-dimethylformamide (DMF) and deionized water repeatedly to obtain a brown precipitate; put the precipitate in a vacuum oven at 100°C and dry for 12 hours to obtain a brown solid powder, which is a metal-based -Organic framework ...

Embodiment 3

[0046] A method for deriving copper-cobalt composite carbon materials based on metal-organic framework materials, which is carried out as follows:

[0047] (1) Preparation of precursor: 0.873g (3mM) Co(NO 3 ) 2 ·6H 2 O, 0.887g (3mM) Cu(NO 3 ) 2 ·6H 2 O and 0.498g (3mM) 2,5-dihydroxyterephthalic acid were dissolved in 60mL of N,N-dimethylformamide (DMF) and a mixture of absolute ethanol (volume ratio of 1:1), the The above mixed solution was stirred until completely dissolved, then transferred to a 100mL polytetrafluoroethylene-lined autoclave, put the autoclave into a programmable oven, and reacted with solvent heat at 150°C for 24 hours; cooled, naturally cooled to room temperature, and filtered with a vacuum pump. Wash with absolute ethanol, N,N-dimethylformamide (DMF) and deionized water repeatedly to obtain a brown precipitate; put the precipitate in a vacuum oven at 100°C and dry for 12 hours to obtain a brown solid powder, which is a metal-based -Organic framework ...

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Abstract

The invention relates to a metal-organic framework material-based derived copper-cobalt composite carbon material anda method thereof and a wastewater treatment method. According to the method of the metal-organic framework material-based derived copper-cobalt composite carbon material, cobalt nitrate hexahydrate, copper nitrate hexahydrate and 2, 5-dihydroxy terephthalic acid are dissolved in an organic solvent, a solvothermal reaction is conducted at a temperature of 150 DEG C, cooling, washing and drying are performed to obtain a precursor, the precursor is fully filled with inert gas at a temperature of 600-900 DEG C and roasted in a tubular furnace with a certain flow velocity, and cooling is performed to obtain the metal-organic framework material-based derived copper-cobalt composite carbon material . The metal-organic framework material-based derived copper-cobalt composite carbon material is suitable for treating various organic wastewater, is high in efficiency, good in durability, convenient to operate and environment-friendly, and provides a wide prospect for treating toxic and harmful organic wastewater which is difficult to biodegrade.

Description

technical field [0001] The invention belongs to the technical field of water pollution control, and specifically relates to a copper-cobalt composite carbon material derived from a metal-organic framework material, a method for deriving the copper-cobalt composite carbon material, and a method for applying the copper-cobalt composite carbon material to wastewater treatment . Background technique [0002] With the rapid development of modern industry, more and more pollutants enter the water environment, and the widespread existence of refractory organic pollutants makes water treatment a worldwide problem. Due to their complex composition, stable structure, and long half-life, refractory organic pollutants are difficult to remove by traditional physical and chemical methods such as microorganisms, adsorption, and oxidation. In addition, most of the refractory organic pollutants have certain toxicity and are easy to stay in the organism, thus causing cancer, distortion and f...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J37/08C02F1/72C02F101/30C02F101/34C02F101/38
CPCB01J23/75B01J37/086B01J23/002C02F1/722C02F1/725C02F2101/30C02F2305/023C02F2101/34C02F2101/38C02F2101/40C02F2101/308B01J35/394
Inventor 李欢旋唐俊红黄进刚徐少丹王春辉
Owner HANGZHOU DIANZI UNIV