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Three-dimensional porous cathode suitable for electro-Fenton system and preparation process of cathode

A three-dimensional porous, preparation process technology, applied in water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of lack of three-dimensional porous cathode preparation methods, and achieve long electrode life and catalytic performance high effect

Inactive Publication Date: 2014-09-03
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 three-dimensional porous cathodes and their preparation methods.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 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;

[0018] Set the area to 16cm 2 Put the square titanium mesh into a 500mL beaker, add 100mL of deionized water and boil for 1 hour, take out the titanium mesh and wash it with 250mL of deionized water, put the cleaned titanium 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 titanium mesh and rinse it with 250mL deionized water, and dry to obtain substance C;

[0019] Put 4.5g of substance B into a 500mL beaker, then add 10mL of 4.5mol / L KCl aqueous solution, 8.5mL o...

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PUM

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Abstract

The invention discloses a three-dimensional porous cathode suitable for an electro-Fenton system and a preparation process of the cathode. The preparation process comprises the following steps of pretreating graphite powder to obtain a post-material B, and treating the post-material B through KCl, polyoxyethylene octylphenol ether, ethanol, tert-butyl alcohol and a polytetrafluoroethylene emulsion to obtain a paste A; coating the paste A at one side of a treated titanium net, and carrying out extrusion treatment to obtain a substance E; preparing Pt(NO3)2 and isopropanol into a solution B, and preparing Sr(NO3)2, CoCl2 and NiCl2 into a solution C; preparing the substance B, a KCl water solution, the polyoxyethylene octylphenol ether, the ethanol, the tert-butyl alcohol, the solution B, the solution C and the polytetrafluoroethylene emulsion into a paste B; coating the paste B at the other side of the substance E, extruding, calcining and cooling to obtain the three-dimensional porous cathode suitable for the electro-Fenton 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 three-dimensional porous cathode suitable for an electro-Fenton 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 transformed 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 decompo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461
Inventor 豆俊峰陈辉霞丁爱中
Owner BEIJING NORMAL UNIVERSITY
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