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Foamed nickel loaded carbon embedded zero-valent iron cathode, preparation method and antibiotic degradation method

A zero-valent iron and foamed nickel technology is applied in the fields of nickel foam-supported carbon embedding zero-valent iron cathode and preparation and degradation of antibiotics. Performance optimization, beneficial to recycling, simple recycling effect

Pending Publication Date: 2022-05-31
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these heterogeneous catalysts still have some disadvantages, such as inconvenient recovery of powder catalysts from the reaction solution, powder materials are easy to agglomerate during use, resulting in a decrease in catalytic activity, and metal-based catalyst particles are easily leached when dispersed in the reaction solution, etc.

Method used

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  • Foamed nickel loaded carbon embedded zero-valent iron cathode, preparation method and antibiotic degradation method
  • Foamed nickel loaded carbon embedded zero-valent iron cathode, preparation method and antibiotic degradation method
  • Foamed nickel loaded carbon embedded zero-valent iron cathode, preparation method and antibiotic degradation method

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preparation example Construction

[0057] An embodiment of the present invention provides a method for preparing a zero-valent iron cathode embedded in NF-loaded carbon, which specifically includes the following steps:

[0058] (1) Pretreatment of nickel foam NF: cut NF according to the preset size, put the cut NF in a beaker, add a certain concentration of dilute hydrochloric acid to completely soak the NF, and ultrasonically clean it for 25-35 minutes. After cleaning, use the same method to replace with certain concentrations of acetone solution, absolute ethanol solution, and ultrapure water in sequence, and ultrasonically clean them for 15-25 minutes, 10-20 minutes, and 10-20 minutes respectively. In order to ensure that the residual acetone, ethanol and other substances on the NF were thoroughly cleaned, the ultrapure water was replaced and the cleaning was repeated for 10-20 minutes. The washed NF is aired in a ventilated place at room temperature for 24 hours until it is dried and set aside.

[0059] (2...

preparation Embodiment 1

[0065] This embodiment provides a method for preparing a NF-loaded carbon-embedded zero-valent iron cathode, which specifically includes the following steps:

[0066] (1) Cut the NF to 4*2.5cm, place the cut NF in a beaker and add 5mol / L dilute hydrochloric acid to completely soak the NF, clean it ultrasonically for 30min, and pour out the waste hydrochloric acid after cleaning. In the same way, they were ultrasonically cleaned with acetone for 20 minutes, absolute ethanol for 15 minutes, and ultrapure water for 15 minutes. In order to ensure that the residual acetone, ethanol and other substances on the NF were thoroughly cleaned, the ultrapure water was replaced and the cleaning was repeated for 15 minutes. The washed NF is aired in a ventilated place at room temperature for 24 hours until it is dried and set aside.

[0067] (2) Dissolve 0.01 mol of ferric chloride hexahydrate in 10 mL of DMF to obtain mother liquid A, and set aside; dissolve 0.01 mol of terephthalic acid (...

preparation Embodiment 2

[0071] The difference from Example 1 is that in step (4), under a nitrogen atmosphere, the temperature was raised from 5°C per minute to 700°C for two hours and then naturally cooled to room temperature. The obtained material was designated as C@Fe / NF(II).

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Abstract

The invention relates to a foamed nickel loaded carbon-embedded zero-valent iron cathode, a preparation method thereof and a method for degrading antibiotics. The foamed nickel loaded carbon-embedded zero-valent iron cathode is composed of an NF matrix and a carbon-embedded zero-valent iron catalyst loaded on the surface of the matrix. PMS can be activated under the action of an electric field to degrade antibiotics. The invention also provides a preparation method of the cathode material. The preparation method comprises the following steps: preparing an MOF-Fe precursor solution; preparing an MOF-Fe / NF precursor; and preparing the carbon-embedded zero-valent iron-loaded NF cathode. According to the carbon-embedded zero-valent iron-loaded foamed nickel cathode provided by the invention, the carbon-embedded zero-valent iron grows in situ on the surface of the NF matrix, the zero-valent iron is used as a catalyst, and the surface carbon layer not only can be used as an electron transmission channel to accelerate the catalytic reaction, but also can isolate the elemental iron from a complex external environment to effectively protect the elemental iron and prolong the service life of the electrode; the high-efficiency degradation of antibiotics can be realized, and the electrode can play a good role in complex and changeable environments, and can be suitable for industrial wastewater treatment with complex water conditions.

Description

technical field [0001] The invention relates to a nickel-foam-loaded carbon-embedded zero-valent iron cathode and a method for preparing and degrading antibiotics, and belongs to the technical fields of environmental catalytic nanomaterials and deep oxidation. Background technique [0002] In recent years, more and more antibiotics have been discharged into the water environment, causing increasingly serious water pollution. Sulfamethoxazole (hereinafter referred to as "SMX"), as a typical antibiotic, is widely used to treat various infections. Due to its biological toxicity, long-term stability and easy accumulation, the residual amount of SMX in the environment is increasing, which seriously threatens the ecosystem and human health. And because of the non-biodegradable and stable nature of SMX, it cannot be quickly and completely decomposed through microbial metabolic processes, nor can it be effectively degraded by conventional water treatment technologies. Therefore, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/467C02F1/461C02F101/38
CPCC02F1/46109C02F1/4672C02F2001/46142C02F2101/38Y02W10/37
Inventor 王敏唐乙午刘家昀康瑾
Owner NORTHEASTERN UNIV
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