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Ferrite modifying MXene layered gas diffusion electrode as well as preparation method and application thereof

A technology of gas diffusion electrode and diffusion electrode, which is applied in the field of water treatment, can solve the problems of limited removal capacity, low concentration, and heavy pollution of PPCPs of traditional treatment technology, and achieve improved electrochemical performance and catalytic ozonation activity, high treatment efficiency, The effect of high electrode strength

Active Publication Date: 2018-12-11
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The effluent discharge of urban sewage treatment plants is the most important way for PPCPs to migrate to the environment, and PPCPs pollution is relatively serious in the watershed around sewage treatment plants; the treatment of PPCPs pollutants in the water environment includes physical methods, chemical methods, biological methods, etc., but due to PPCPs have a wide range of components and low concentrations in sewage, and the ability of traditional treatment technologies to remove such pollutants is very limited

Method used

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  • Ferrite modifying MXene layered gas diffusion electrode as well as preparation method and application thereof
  • Ferrite modifying MXene layered gas diffusion electrode as well as preparation method and application thereof
  • Ferrite modifying MXene layered gas diffusion electrode as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Embodiment 1 Preparation of Ferrite Modified MXene Layered Gas Diffusion Electrode

[0051] (1) Preparation of MXene material: weigh 2.0g Ti 3 AlC 2 Materials and Measure 200mL of hydrofluoric acid solution into a round bottom flask. After 1h of ultrasonic treatment, react in a constant temperature reactor at 40°C for 72h. After the solution is cooled, wash with ultrapure water and centrifuge several times. Remove surface residue impurities until the pH of the washing liquid is not lower than 6, and then fully dry in a vacuum oven at 60°C until a constant quality is obtained to obtain MXene materials.

[0052] 2) Ferrite modified MXene material: Accurately weigh 808mg Fe(NO 3 ) 3 9H 2 O solid and 125.84 mg MnCl 2 solid. Fe(NO) was added to 100 mL of ultrapure water 3 ) 3 9H 2 O solid and MnCl 2 Solid, stirred with a magnetic stirrer to make it evenly mixed and completely dissolved to obtain a mixed solution, in which Fe(NO 3 ) 3 0.02mol / L, MnCl 2 0.01mol / L,...

Embodiment 2

[0055]Example 2 Ferrite Modified MXene Layered Gas Diffusion Electrode

[0056] 1) Preparation of MXene material: Weigh 3.0g Ti 3 AlC 2 Materials and Measure 150mL of hydrofluoric acid solution into a round-bottomed flask. After 1h of ultrasonic treatment, react in a constant temperature reactor at 40°C for 72h. After the solution is cooled, wash with ultrapure water and centrifuge several times. Remove surface residue impurities until the pH of the washing liquid is not lower than 6, and then fully dry in a vacuum oven at 60°C until a constant quality is obtained to obtain MXene materials.

[0057] 2) Ferrite modified MXene material: Accurately weigh 808mg Fe(NO 3 ) 3 9H 2 O solid and 125.84 mg MnCl 2 solid, adding Fe(NO 3 ) 3 9H 2 O solid and MnCl 2 Solid, stirred with a magnetic stirrer to make it evenly mixed and completely dissolved to obtain a mixed solution, in which Fe(NO 3 ) 3 0.02mol / L, MnCl 2 0.01mol / L, add 5mL of polyethylene glycol to the mixed solutio...

Embodiment 3

[0059] Example 3 Ferrite Modified MXene Layered Gas Diffusion Electrode

[0060] 1) Preparation of MXene material: weigh 1.0g Ti 3 AlC 2 Materials and Measure 300mL of hydrofluoric acid solution into a round bottom flask. After 1h of ultrasonic treatment, react in a constant temperature reactor at 40°C for 72h. After the solution is cooled, wash with ultrapure water and centrifuge several times. Remove surface residue impurities until the pH of the washing liquid is not lower than 6, and then fully dry in a vacuum oven at 60°C until a constant quality is obtained to obtain MXene materials.

[0061] 2) Ferrite modified MXene material: Accurately weigh 1616mg Fe(NO 3 ) 3 9H 2 O solid and 251.68 mg MnCl 2 solid, adding Fe(NO 3 ) 3 9H 2 O solid and MnCl 2 Solid, stirred with a magnetic stirrer to make it evenly mixed and completely dissolved to obtain a mixed solution, in which Fe(NO 3 ) 3 0.04mol / L, MnCl 2 0.02mol / L, add 10mL of polyethylene glycol to the mixed soluti...

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Abstract

The invention discloses a preparation method of a ferrite modifying MXene layered gas diffusion electrode. The preparation method comprises the following steps that (1) an MXene material is prepared;(2) ferrite modifies the MXene material; and (3) the layered gas diffusion electrode is prepared. The invention further discloses the ferrite modifying MXene layered gas diffusion electrode and application thereof. The ferrite modifying MXene layered gas diffusion electrode can be used for preparing electrochemical cathode materials which are applied to an electrochemical / ozone coupling water treatment system. The preparation method can easily get the raw materials, the technological operation is simple, the cost is low, the electrode strength is high, the electrochemical catalytic activity ishigh, the dispersity is good, and the water treatment technique consumes low energy and has the high efficiency. The ferrite modifying MXene layered gas diffusion electrode prepared by adopting the method has the wide application prospects on degradation treatment of PPCPs (pharmaceutical and personal care products) pollutants on the three-phase reaction interface.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a ferrite-modified MXene layered gas diffusion electrode and its preparation method and application, in particular to using a ferrite-modified MXene layered gas-diffusion electrode to degrade PPCPs pollution in an electrochemical / ozone coupling system material applications. Background technique [0002] In recent years, people have gradually detected trace amounts of pharmaceuticals and personal care products (PPCPs) in natural water bodies such as rivers and lakes. Human or animal drugs are the main source of PPCPs, and PPCPs have strong long-lasting The characteristics of sex, bioactivity, and bioaccumulation, and its long-term large-scale retention in the environment will produce endocrine disrupting effects and threaten human health. The effluent discharge of urban sewage treatment plants is the most important way for PPCPs to migrate to the environment, and PPCPs ...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/72C02F1/78C02F101/36
CPCC02F1/46109C02F1/722C02F1/78C02F2001/46142C02F2101/363C02F2201/4619C02F2201/782
Inventor 姚晶晶李海普杨兆光刘博宇代喜梅
Owner CENT SOUTH UNIV
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