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A kind of preparation method and application of bimetallic Cu-BI electrocatalytic denitrification electrode

An electrocatalytic and bimetallic technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc., can solve problems such as unsatisfactory wastewater treatment effects, and achieve easy scale electrode preparation and methods Simple, controllable, rough-surfaced effects

Active Publication Date: 2019-10-29
SHENYANG POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a preparation method of a bimetallic Cu-Bi electrocatalytic electrode, which can be used for nitrate treatment in water bodies, and solves the problem of unsatisfactory wastewater treatment effects in the past

Method used

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  • A kind of preparation method and application of bimetallic Cu-BI electrocatalytic denitrification electrode
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  • A kind of preparation method and application of bimetallic Cu-BI electrocatalytic denitrification electrode

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preparation example Construction

[0030] The invention is a method for preparing a bimetallic Cu-Bi electrocatalytic denitrification electrode, the steps of which are as follows:

[0031] (1) Pretreatment of the copper substrate: the copper substrate is polished with water-resistant sandpaper, then placed in acetone for 10-15 minutes of ultrasonication, then activated in 10% dilute sulfuric acid solution for 30-45 seconds, washed with distilled water and then used.

[0032] (1) (2) Plating solution preparation: preparation of Bi 3+ 、Cu 2+ Copper-bismuth plating solution with a mass concentration ratio of 1:1-9. First prepare copper electroplating plating solution, with 35-50g / L copper pyrophosphate as the main salt, 200-240g / L potassium pyrophosphate as complexing agent, add 25-28.3g / L disodium hydrogen phosphate in a water bath at 45-60°C Fully stir in the medium until completely dissolved; prepare bismuth electroplating bath, use 96-97g / L bismuth nitrate as the main salt, 120-125g / L disodium edetate as the...

Embodiment 1

[0038] A preparation method of bimetallic Cu-Bi electrocatalytic denitrification electrode, the steps are as follows:

[0039] (1) Pretreatment of the copper substrate: the copper substrate was polished with water-resistant sandpaper, placed in acetone for 12 minutes, then activated in 10% dilute sulfuric acid solution for 40 seconds, washed with distilled water and then used.

[0040] (2) Preparation of plating solution: prepare copper electroplating plating solution, use 35g / L copper pyrophosphate as the main salt, 200g / L potassium pyrophosphate as complexing agent, add 26g / L disodium hydrogen phosphate and stir fully in a 45°C water bath Until completely dissolved; prepare bismuth electroplating bath, with 96g / L bismuth nitrate as the main salt, 120g / L edetate disodium as the main complexing agent, then add 60g / L potassium chloride, potassium sodium tartrate, 120g / L 5-sulfosalicylic acid until fully stirred evenly. Potassium hydroxide was used to adjust the pH to 8 during...

Embodiment 2

[0043] A preparation method of bimetallic Cu-Bi electrocatalytic denitrification electrode, the steps are as follows:

[0044] (1) Pretreatment of the copper substrate: the copper substrate was polished with water-resistant sandpaper, then placed in acetone for 10 minutes of ultrasonication, then activated in 10% dilute sulfuric acid solution for 30 seconds, washed with distilled water and then used.

[0045] (2) Plating solution preparation: prepare copper electroplating plating solution, use 38.2g / L copper pyrophosphate as the main salt, 206.3g / L potassium pyrophosphate as complexing agent, add 27.3g / L disodium hydrogen phosphate in a 60°C water bath Fully stir until completely dissolved; prepare bismuth electroplating bath, with 96.5g / L bismuth nitrate as the main salt, 121.2g / L edetate disodium as the main complexing agent, then add 60g / L potassium chloride, Potassium sodium tartrate, 120g / L 5-sulfosalicylic acid until fully stirred evenly. Potassium hydroxide was used to...

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Abstract

A preparation method and application of a bimetallic Cu-Bi electrocatalytic denitrification electrode, the steps are as follows: (1) pretreatment of copper substrate, (2) preparation of plating solution, (3) electroplating. The Cu-Bi electrocatalytic electrode prepared by the method of the present invention has a high reduction activity to nitrate in water, and can effectively reduce it to N 2 , and can effectively reduce intermediate products, and has great application prospects.

Description

technical field [0001] The invention relates to a preparation method of a bimetallic Cu-Bi electrocatalytic denitrification electrode, which belongs to the technical field of electrochemical water treatment, and the prepared electrode can be used for the electrocatalytic reduction of nitrate in a water body. Background technique [0002] With the rapid development of industry and agriculture, nitrate pollution in water bodies all over the country has become increasingly serious, which has brought great harm to human health. my country's drinking water hygiene standards strictly stipulate that the concentration of nitrate should be lower than 10mg / L. Conventional physical, chemical, and biological methods are difficult to reduce nitrate to non-toxic N 2 , and may produce secondary pollution. Electrocatalytic denitrification technology has attracted widespread attention in the field of water treatment in recent years due to its characteristics of more thorough reduction of ni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/56C25D3/58C02F1/461C02F101/16
CPCC02F1/46109C02F1/4676C02F2001/46142C02F2101/163C25D3/56C25D3/58
Inventor 高维春高陆璐李丹梁吉艳
Owner SHENYANG POLYTECHNIC UNIV
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