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Aluminum-doped SnO2 electro-catalytic positive pole, preparation method, and application thereof

A technology of tin dioxide and electrocatalysis, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of expensive, secondary pollution of water bodies, low oxidation efficiency, etc. Achieve the effect of low cost, high catalytic activity and good degradation effect

Active Publication Date: 2016-12-21
河南省宗祥环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an aluminum-doped tin dioxide electrocatalytic anode, which solves the problems of low oxidation efficiency, secondary pollution of water body and high price in the process of treating phenol wastewater by existing metal electrodes and metal oxidation electrodes

Method used

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  • Aluminum-doped SnO2 electro-catalytic positive pole, preparation method, and application thereof
  • Aluminum-doped SnO2 electro-catalytic positive pole, preparation method, and application thereof
  • Aluminum-doped SnO2 electro-catalytic positive pole, preparation method, and application thereof

Examples

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Effect test

Embodiment 1

[0029] An aluminum-doped tin dioxide electrocatalytic anode is composed of a titanium substrate and an anode paint coated on the titanium substrate, and the anode paint is made of the following components in molar fractions: 600 parts of citric acid, ethyl 100 parts of diol, 100 parts of tin tetrachloride, 5 parts of antimony trichloride, and 1 part of aluminum trichloride.

[0030] Concrete preparation steps are as follows:

[0031] Step 1, polishing the titanium substrate until the surface has a metallic luster, rinsing it with distilled water, and placing it in a water bath of 40% sodium hydroxide solution at 80°C for 2 hours to obtain an alkali-treated titanium substrate;

[0032] Step 2, taking out the alkali-treated titanium substrate and rinsing it with distilled water, placing the alkali-treated titanium substrate in a 10% oxalic acid solution for 2 hours at 70-100° C. to obtain an acid-treated titanium substrate;

[0033] Step 3, weigh each component according to the...

Embodiment 2

[0040] An aluminum-doped tin dioxide electrocatalytic anode is composed of a titanium substrate and an anode coating coated on the titanium substrate, and the anode coating is made of the following components in molar fractions: 650 parts of citric acid, ethyl 200 parts of diol, 150 parts of tin tetrachloride, 6.5 parts of antimony trichloride, and 2 parts of aluminum trichloride.

[0041] Concrete preparation steps are as follows:

[0042] Step 1, polishing the titanium substrate until the surface has a metallic luster, rinsing it with distilled water, and placing it in a water bath of 40% sodium hydroxide solution at 80°C for 2 hours to obtain an alkali-treated titanium substrate;

[0043] Step 2, taking out the alkali-treated titanium substrate and rinsing it with distilled water, placing the alkali-treated titanium substrate in a 10% oxalic acid solution for 2 hours at 70-100° C. to obtain an acid-treated titanium substrate;

[0044] Step 3, weigh each component according...

Embodiment 3

[0051] An aluminum-doped tin dioxide electrocatalytic anode is composed of a titanium substrate and an anode coating coated on the titanium substrate, and the anode coating is made of the following components in molar fractions: 700 parts of citric acid, ethyl 300 parts of diol, 200 parts of tin tetrachloride, 10 parts of antimony trichloride, and 3 parts of aluminum trichloride.

[0052] Concrete preparation steps are as follows:

[0053] Step 1, polishing the titanium substrate until the surface has a metallic luster, rinsing it with distilled water, and placing it in a water bath of 40% sodium hydroxide solution at 80°C for 2 hours to obtain an alkali-treated titanium substrate;

[0054] Step 2, taking out the alkali-treated titanium substrate and rinsing it with distilled water, placing the alkali-treated titanium substrate in a 10% oxalic acid solution for 2 hours at 70-100° C. to obtain an acid-treated titanium substrate;

[0055] Step 3, weigh each component according ...

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Abstract

The invention discloses an aluminum-doped SnO2 electro-catalytic positive pole which is composed of a titanium base body and a positive pole coating that coats the titanium base body; the positive pole coating is composed of, by molar ratio, 600-700 parts of citric acid, 100-300 parts of ethylene glycol, 100-200 parts of tin tetrachloride, 5-10 parts of antimony trichloride, and 1-3 parts of aluminum chloride. The positive pole has high activity and has good degradation effect on phenol wastewater. The SnO2 electro-catalytic positive pole is doped with aluminum, so that the cost is low. The invention also provides a preparation method and an application of the positive pole.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic electrode preparation, and in particular relates to an aluminum-doped tin dioxide electrocatalytic anode, a preparation method and an application thereof. Background technique [0002] Phenol wastewater is a persistent organic pollutant, which is biologically toxic and difficult to treat with conventional biodegradation methods. Electrocatalytic oxidation technology can quickly degrade persistent organic pollutants, making it easier to biodegrade, and even organic The molecule is completely oxidized to CO 2 and H 2 O, suitable for the treatment of phenol wastewater. [0003] At present, the electrode materials used for phenol wastewater treatment usually include metal electrodes (such as Pt) and metal oxide electrodes (such as PbO 2 and SnO 2 electrode). Pt has been used for electrocatalytic oxidation of organic pollutants for decades, but it is easy to form a passivation film on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C02F101/34
CPCC02F1/4672C02F2101/34
Inventor 魏学锋苗娟万晓阳朱书法赵海丽卢伟伟许爱荣牛青山
Owner 河南省宗祥环保工程有限公司
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