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Porous membrane cathode for photoelectric-fenton processing system and its preparation process

A treatment system and preparation process technology, applied in the field of porous membrane cathode and its preparation process, can solve the problems such as the lack of porous membrane cathode preparation method, and achieve the effect of long electrode life and high catalytic performance

Inactive Publication Date: 2015-11-25
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is still a lack of research on porous membrane cathodes and their preparation methods.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] Take 6.5g of graphite powder and put it into a 500mL beaker, add 100mL of deionized water and boil for 2h, remove the impurities in the upper layer and vacuum filter, put the filtered graphite powder in a 95°C oven and dry for 12h to obtain substance A; Put it into a 500mL beaker, add 100mL of HCl with a concentration of 0.45mol / L into the beaker, stir for 6h, put it in an oven at 95°C for 24h, and obtain substance B;

[0022] Set the area to 16cm 2 Put the square nickel mesh into a 500mL beaker, add 100mL of deionized water and boil for 1 hour, take out the nickel mesh and wash it with 250mL of deionized water, put the cleaned nickel mesh into a 500mL beaker, add 100mL of hydrochloric acid with a concentration of 0.1mol / L Soak in the solution for 0.5h, then take out the nickel mesh and rinse it with 250mL deionized water, and dry to obtain substance C;

[0023] Put 4.5g of substance B into a 500mL beaker, then add 10mL of 4.5mol / L KCl aqueous solution, 8.5mL of 30% no...

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PUM

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Abstract

The invention discloses a porous membrane cathode for a photoelectric-Fenton treating system, as well as a preparation technology of the porous member cathode. The preparation technology comprises the following steps: pretreating graphite powder to obtain a substance B, and treating the substance B through a KNO3 water solution, a nonylphenol polyoxyethylene ether water solution, ethanol, tertbutyl alcohol and polytetrafluoroethylene emulsion to obtain cream A; smearing the cream A on one side of a treated nickel screen, and extruding to obtain a substance E; preparing a solution C; preparing a cream B from the substance B, a KNO3 water solution, a nonylphenol polyoxyethylene ether water solution, ethyl ether, methanol, 2-ethylanthraquinone, the solution C and the polytetrafluoroethylene emulsion; and smearing the cream B on the other side of the substance E, and extruding, forging and cooling to obtain the porous membrane cathode for the photoelectric-Fenton treating system.

Description

technical field [0001] The invention belongs to the technical field of chemically modified electrodes for electrocatalytic oxygen reduction, and in particular relates to a porous film cathode used in a photoelectric-Fenton treatment system and a preparation process thereof. Background technique [0002] In recent years, the use of electrochemical methods to treat refractory organic wastewater has gradually attracted people's attention, among which hydrogen peroxide has attracted much attention because of its non-toxic and non-residual characteristics. Hydrogen peroxide can be further combined with Fe 2+ The Fenton reaction occurs and is converted into a strong oxidant hydroxyl radical (OH), which can greatly improve the removal rate of pollutants. The hydrogen peroxide addition method currently used in water treatment technology not only increases the transportation cost of wastewater treatment, but also reduces its activity because hydrogen peroxide is easy to decompose, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F1/32C02F1/72
Inventor 丁爱中谢恩豆俊峰郑蕾许新宜
Owner BEIJING NORMAL UNIVERSITY
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