Electrode for electrochemical filtration water treatment as well as preparation method and application thereof

An electrochemical and water treatment technology, applied in chemical instruments and methods, water / sewage treatment, water / sludge / sewage treatment, etc. , improve the catalytic efficiency, the effect of high mass transfer efficiency

Inactive Publication Date: 2021-03-02
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the electrode reaction efficiency of traditional carbon materials needs to be improved, and some nano-carbon materials also have defects such as hydrophobicity and poor dispersion.

Method used

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  • Electrode for electrochemical filtration water treatment as well as preparation method and application thereof
  • Electrode for electrochemical filtration water treatment as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 20mg Ti 3 C 2 MXene was dissolved in 4 mL of ethanol, and the mixture was sonicated for 30 min; then, 2 mL of 0.2 mol / L Fe 2 SO 4 solution, and 6mg of molybdenum powder, then add 10mL of ethanol, and magnetically stir the solution for 2 hours; then, pour the above reaction solution into a 100mL stainless steel autoclave lined with polytetrafluoroethylene, heat at 120°C for 8 hours, and wait for cooling After being brought to room temperature and centrifuged, the finally obtained precipitate was washed 3 times with ethanol and dried under vacuum at 60°C. The obtained modified MXene was mixed into deionized water and ultrasonicated for 30 minutes, filtered onto a PVDF membrane with a pore size of 0.45 μm by vacuum suction, and dried in vacuum to obtain the required membrane electrode.

[0025] figure 1 It is the graph of the electrochemical cyclic voltammetry test results of the prepared modified MXene electrode material.

Embodiment 2

[0027] Take the modified MXene material described in the above-mentioned Example 1, further mix it with carbon nanotubes at a mass ratio of 1:3 and add it to ethanol for 30 minutes, and vacuum filter to a PVDF membrane with a pore size of 0.45 μm After vacuum drying, the desired membrane electrode was obtained. The photo of the prepared electrode is shown in figure 2 .

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Abstract

The invention discloses an electrode for electrochemical filtration water treatment as well as a preparation method and application of the electrode. The electrode comprises MXene and a catalytic component for modifying the MXene, and can also comprise a carbon material, and the electrode structure is film-shaped. The prepared electrode is large in specific surface area and good in water permeability, and an electric filtration system constructed by the electrode is high in substance mass transfer efficiency and high in oxidation-reduction reaction rate on the surface of the electrode. Meanwhile, the MXene is modified by utilizing composite metal or metal oxide, and new catalytic reactions such as Fenton-like oxidation can be initiated in the electrochemical reaction process, so that the removal of pollutants is enhanced. Metal elements can also be complementary in the chain type catalytic reaction process, so that the activity of the catalyst and the water treatment efficiency are improved. The membrane electrode disclosed by the invention is simple and convenient to prepare and efficient in treatment, has multiple functions of adsorption, electric conduction, catalysis and the like, and is suitable for water treatment by an electrochemical filtration system.

Description

technical field [0001] The invention relates to the technical field of membrane electrodes for water treatment, in particular to an electrode for electrochemical filtering water treatment. Background technique [0002] Efficient water treatment is essential to ensure the safety of human water and drainage. Among many water treatment technologies, electrochemical technology is favored by people because of its thorough degradation of pollutants, low energy consumption, and good controllability. However, the traditional electrochemical water treatment process is often limited by factors such as the performance of the electrode material, electrode area, mass transfer of the reaction system, and water conductivity. It is necessary to improve its treatment efficiency by developing high-performance electrodes and improving the reaction system. . [0003] Through the improvement of the electrochemical reaction system, the contact between the reactant and the electrode in the liqui...

Claims

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Application Information

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IPC IPC(8): C02F1/461
CPCC02F1/46109C02F2001/46152
Inventor 吴东海陆光华沈烨李玥娴刘建超闫振华
Owner HOHAI UNIV
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