A kind of preparation method of oxide coating electrode for waste water treatment

A technology of oxide coating and wastewater treatment, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem that the electrocatalytic performance of electrodes cannot meet the actual needs of wastewater treatment, and the catalytic degradation of organic matter Poor performance, non-dense electrode surface coating and other problems, to achieve the effect of improved performance, dense surface, and reduced electrical resistance

Active Publication Date: 2019-07-16
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, DSA electrodes are mainly used in sulfuric acid and chlor-alkali industries. 2 , Ti\IrO 2 The electrode has a low oxygen evolution overpotential, poor catalytic degradation ability for organic matter, and the electrocatalytic performance of the electrode cannot meet the actual needs of wastewater treatment; DSA electrodes with good electrocatalytic performance, such as Ti\SnO 2 、Ti\PbO 2 The electrode, due to its short life, also cannot meet the actual needs, and the surface coating of the electrode is not dense and easy to fall off
The preparation method of DSA electrocatalytic electrode is complicated, and the raw materials are not mixed uniformly, which affects the quality of the final product; the conductivity of the electrode is reduced, the degradation performance is reduced, and it is easy to fall off.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing an oxide-coated electrode for wastewater treatment, the steps of which are as follows:

[0026] Step 1, the substrate is cleaned by using a plate-shaped metal foam as the substrate, soaked in water, heated to a slight boil, filtered after natural cooling, and then soaked in an ethanol solution, subjected to low-temperature vibration, and after the vibration is completed, the plate-shaped metal foam is removed. The foam is taken out and placed in water, stirred and soaked, and dried to obtain a clean sheet metal foam;

[0027] Step 2, filler configuration: using graphene nanomaterials as a material, silicone resin as a binder, and an alcohol solution as a solvent, and stirring to configure the graphene nanosuspension;

[0028] Step 3, filling the foam: place the plate-shaped metal foam in a mold of the same size, then drop the graphene nano-suspension, and vibrate the mold while dripping until the mold is filled, and then place it in an oven Dryin...

Embodiment 2

[0042] A method for preparing an oxide-coated electrode for wastewater treatment, the steps of which are as follows:

[0043] Step 1, the substrate is cleaned by using a plate-shaped metal foam as the substrate, soaked in water, heated to a slight boil, filtered after natural cooling, and then soaked in an ethanol solution, subjected to low-temperature vibration, and after the vibration is completed, the plate-shaped metal foam is removed. The foam is taken out and placed in water, stirred and soaked, and dried to obtain a clean sheet metal foam;

[0044] Step 2, filler configuration: using graphene nanomaterials as a material, silicone resin as a binder, and an alcohol solution as a solvent, and stirring to configure the graphene nanosuspension;

[0045] Step 3, filling the foam: place the plate-shaped metal foam in a mold of the same size, then drop the graphene nano-suspension, and vibrate the mold while dripping until the mold is filled, and then place it in an oven Dryin...

Embodiment 3

[0058] A method for preparing an oxide-coated electrode for wastewater treatment, the steps of which are as follows:

[0059] Step 1, the substrate is cleaned by using a plate-shaped metal foam as the substrate, soaked in water, heated to a slight boil, filtered after natural cooling, and then soaked in an ethanol solution, subjected to low-temperature vibration, and after the vibration is completed, the plate-shaped metal foam is removed. The foam is taken out and placed in water, stirred and soaked, and dried to obtain a clean sheet metal foam;

[0060] Step 2, filler configuration: using graphene nanomaterials as a material, silicone resin as a binder, and an alcohol solution as a solvent, and stirring to configure the graphene nanosuspension;

[0061] Step 3, filling the foam: place the plate-shaped metal foam in a mold of the same size, then drop the graphene nano-suspension, and vibrate the mold while dripping until the mold is filled, and then place it in an oven Dryin...

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Abstract

The invention discloses a preparation method of oxide-coated electrodes for wastewater treatment. The preparation method includes the following steps of 1, base material cleaning, 2, filler preparation, 3, foaming body filling, 4, metal oxide solution preparation, 5, electrode plate coating, and 6, compaction to obtain the coated electrodes. The preparation method is simple in process, strong in operability, widely available in raw materials and low in cost.

Description

technical field [0001] The invention belongs to the technical field of environmental materials, and in particular relates to a preparation method of an oxide-coated electrode for wastewater treatment. Background technique [0002] At present, DSA electrodes are mainly used in sulfuric acid and chlor-alkali industries, and their functions are oxygen evolution and chlorine evolution, while in wastewater treatment, DSA electrodes with longer life, such as Ti\RuO 2 , Ti\IrO 2 Electrode, its oxygen evolution overpotential is low, the catalytic degradation ability of organic matter is poor, and the electrocatalytic performance of the electrode cannot meet the actual needs of wastewater treatment; DSA electrodes with good electrocatalytic performance, such as Ti\SnO 2 , Ti\PbO 2 Electrodes, due to their short lifespan, also cannot meet actual needs, and the electrode surface coating is not dense and easy to fall off. The preparation method of DSA electrocatalytic electrode is co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461
CPCC02F1/46109C02F2001/46138
Inventor 令狐文生杨海
Owner SHAOXING UNIVERSITY
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