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Preparation method of oxide-coated electrodes for wastewater 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 the electrode 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: 2016-11-23
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 preparation method for an oxide-coated electrode for waste water treatment, the steps are as follows:

[0026] Step 1, base material cleaning Use a plate-shaped metal foam as the base material, soak it in water, heat it to a slight boil, cook it, filter it after natural cooling, then soak it in an ethanol solution, and perform low-temperature vibration. After the vibration, the plate-shaped metal The foam is taken out and placed in water again, stirred and soaked, and dried to obtain a clean plate-shaped metal foam;

[0027] Step 2, filler configuration: use graphene nanomaterials as materials, silicone resin as adhesive, alcohol solution as solvent, and stir to configure graphene nanosuspension;

[0028] Step 3, filling the foam: place the plate-shaped metal foam in a mold of the same size, then add the graphene nano-suspension dropwise, vibrate the mold at the same time as dropping, until the drop fills the mold, and then place it in the oven Carry out drying, repe...

Embodiment 2

[0042] A preparation method for an oxide-coated electrode for waste water treatment, the steps are as follows:

[0043] Step 1, base material cleaning Use a plate-shaped metal foam as the base material, soak it in water, heat it to a slight boil, cook it, filter it after natural cooling, then soak it in an ethanol solution, and perform low-temperature vibration. After the vibration, the plate-shaped metal The foam is taken out and placed in water again, stirred and soaked, and dried to obtain a clean plate-shaped metal foam;

[0044] Step 2, filler configuration: use graphene nanomaterials as materials, silicone resin as adhesive, alcohol solution as solvent, and stir to configure graphene nanosuspension;

[0045] Step 3, filling the foam: place the plate-shaped metal foam in a mold of the same size, then add the graphene nano-suspension dropwise, vibrate the mold at the same time as dropping, until the drop fills the mold, and then place it in the oven Carry out drying, repe...

Embodiment 3

[0058] A preparation method for an oxide-coated electrode for waste water treatment, the steps are as follows:

[0059] Step 1, base material cleaning Use a plate-shaped metal foam as the base material, soak it in water, heat it to a slight boil, cook it, filter it after natural cooling, then soak it in an ethanol solution, and perform low-temperature vibration. After the vibration, the plate-shaped metal The foam is taken out and placed in water again, stirred and soaked, and dried to obtain a clean plate-shaped metal foam;

[0060] Step 2, filler configuration: use graphene nanomaterials as materials, silicone resin as adhesive, alcohol solution as solvent, and stir to configure graphene nanosuspension;

[0061] Step 3, filling the foam: place the plate-shaped metal foam in a mold of the same size, then add the graphene nano-suspension dropwise, vibrate the mold at the same time as dropping, until the drop fills the mold, and then place it in the oven Carry out drying, repe...

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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 used for wastewater treatment. Background technique [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, cannot meet the actual needs, and the surface coating of the electrode is not dense and easy to fall off. The preparation method of the 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 electro...

Claims

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Application Information

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