An electrocatalytic activity regulation method based on inert ion intercalation

An electrocatalysis and ion technology, which is applied in the field of environmental pollution control, can solve the problems of limited control degree of electrocatalytic electrodes, limited control methods and means, complex types of pollutants, etc., and achieves simple processing method, high feasibility and low cost. Effect

Active Publication Date: 2021-12-14
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology puts more emphasis on the flocculation treatment of pollutants in water, but the degree of regulation on electrocatalytic electrodes is limited; patent 200810103518.2 prepares N-type TiO with P-N junction characteristics that can efficiently treat organic pollutants in water 2 / P-type boron doped diamond film (BDD)BDD-TiO 2 Electrodes can effectively control the degradation characteristics of pollutants in water by adjusting the characteristics of the P-N junction, applying a certain applied voltage and ultraviolet light irradiation, but the types of pollutants in water are too complex to achieve complete degradation through photoelectric composite methods. The methods and means of regulation are also relatively limited

Method used

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  • An electrocatalytic activity regulation method based on inert ion intercalation
  • An electrocatalytic activity regulation method based on inert ion intercalation
  • An electrocatalytic activity regulation method based on inert ion intercalation

Examples

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Effect test

Embodiment 1

[0028] First, put the stainless steel electrode with cerium oxide film on the surface as the cathode, and the graphite electrode as the anode, connect the positive and negative poles of the DC pulse power supply to the positive and negative poles respectively, and set the pulse current density to 0.5mA / cm 2 , start the power supply to process the metal electrode, and continue the treatment for 5 minutes, so that the oxide film is properly pore-formed and a layered defect state structure is formed to form a defect state electrode; the next step is to expand the defect state electrode, and use the defect state electrode as the anode , the graphite electrode is used as the cathode, and 1 mol / liter of sodium sulfate, 0.5 mol / liter of sulfuric acid, 0.02 mol / liter of potassium fluoride, 0.1 mol / liter of triethylamine, and 0.22 mol / liter of potassium thiocyanate are added to the electrolytic cell as electrolytes, Connect the positive and negative poles of the DC pulse power supply to...

Embodiment 2

[0031] First, put the stainless steel electrode with aluminum oxide film on the surface as the cathode and the graphite electrode as the anode in the electrolytic cell, and set the pulse current density to 10mA / cm 2, start the power supply to process the metal electrode, and continue the treatment for 10 minutes. With the electrode in the defect state as the anode and the graphite electrode as the cathode, add 1 mol / L of potassium sulfate, 0.5 mol / L of sulfuric acid, and 0.02 mol / L of potassium fluoride into the electrolytic cell. , triethylamine 0.1 mol / liter, potassium thiocyanate 0.22 mol / liter as the electrolyte, set the pulse current density to 100mA / cm 2 , start the power supply and continue processing for 30 seconds, change the position of the cathode and anode, and set the current density to 1.0mA / cm 2 , the pulse treatment time was 24 hours, and other treatment conditions were similar to those in Example 1, so that no further details were given to obtain a potassium i...

Embodiment 3

[0034] Firstly, place a stainless steel electrode with a silicon oxide film on its surface in the electrolytic cell as the cathode, and a graphite electrode as the anode, and set the pulse current density to 2.5mA / cm 2 , start the power supply to process the metal electrode, and continue the treatment for 7 minutes. With the electrode in the defect state as the anode and the graphite electrode as the cathode, add 1 mol / L of calcium nitrate, 0.5 mol / L of sulfuric acid, and 0.02 mol / L of potassium fluoride into the electrolytic cell. , triethylamine 0.1 mol / liter, potassium thiocyanate 0.22 mol / liter as the electrolyte, set the pulse current density to 100mA / cm 2 , start the power supply and continue processing for 15 seconds, change the position of the cathode and anode, and set the current density to 0.5mA / cm 2 , the pulse treatment time was 18 hours, and other treatment conditions were similar to those in Example 1 so that no further details were given to obtain a calcium ion...

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Abstract

The invention relates to the field of environmental pollution control, in particular to an electrocatalytic activity regulation method based on inert ion intercalation. The present invention comprises the steps of processing an electrochemical electrode material with a defect state structure, and then passing Na + 、K + , Ca 2+ , Mg 2+ Such inert metal ions form a highly concentrated ion atmosphere on the electrode surface, and the ions are inserted into the electrode defect state layer through the strong interaction between the electrode and the ion atmosphere. The present invention uses common cations in traditional sewage as the means of electrode regulation, and has outstanding treatment effects when controlling high-salt organic wastewater; in addition, this method saves the process of coprecipitation, doping and roasting that is often used in traditional electrode regulation and activity, and has the advantages of Outstanding economic value and industrial benefits.

Description

technical field [0001] The invention relates to the field of environmental pollution control, in particular to an electrocatalytic activity regulation method based on inert ion intercalation. Background technique [0002] Electrochemical method is a common advanced oxidation technology for treating organic pollutants in wastewater. This method is a research hotspot in the treatment of high-concentration organic wastewater and secondary biochemical effluent. The basic mechanism of electrochemical treatment of wastewater is to generate strong oxidizing substances (OH, H 2 o 2 、 O 2 etc.), with direct oxidation and indirect oxidation reactions with organic pollutants in sewage and wastewater, decomposing high-concentration, difficult-to-biodegrade macromolecular organic matter into easily biodegradable small-molecular organic matter, and even completely mineralizing it into CO 2 and H 2 O and other inorganic substances. [0003] Electrochemical devices are all electrolyti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F101/30
CPCC02F1/4672C02F1/46109C02F2201/46175C02F2001/46133C02F2001/46152C02F2201/4614C02F2201/4615C02F2101/30C02F2201/4618
Inventor 殷立峰代云容张圆正刘双段存戌
Owner BEIJING NORMAL UNIVERSITY
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