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Cu-Sn-Bi electrode with high catalytic activity, and preparation method and application thereof

A high catalytic activity, cu-sn-bi technology, used in chemical instruments and methods, water pollutants, water/sewage treatment, etc. Simple formula for effect

Pending Publication Date: 2018-08-31
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a Cu-Sn-Bi electrode with high catalytic activity and its preparation method and application. Its purpose is to solve the problems existing in the past, and can be used for nitrate treatment in water bodies, and solve the problem of unsatisfactory treatment effects in the past.

Method used

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  • Cu-Sn-Bi electrode with high catalytic activity, and preparation method and application thereof
  • Cu-Sn-Bi electrode with high catalytic activity, and preparation method and application thereof
  • Cu-Sn-Bi electrode with high catalytic activity, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of Cu-Sn-Bi electrode preparation and the method for degrading nitrate thereof, concrete steps are as follows:

[0036] Step 1, 57g / L Bi(NO 3 ) 3 ·5H 2 O, 38g / L CuP 2 o 7 , 2.7g / L SnP 2 o 7 , 50g / L KCl, 45g / L NaKC 4 h 4 o 6 4H 2 O, 86g / L EDTA-2Na, 120 / L C 7 h 6 o 6 S·2H 2O, 225g / LK 4 o 7 P 2 , 28g / L Na 2 HPO 4 and 25g / L N(CH 2 COOH) 3 Soluble in deionized water as electrodeposition solution;

[0037] Step 2. Cut the titanium plate so that its surface area is 40mm×50mm, and then polish it with sandpaper of two different specifications, 120 mesh and 240 mesh, and then treat the polished titanium substrate in a 40% NaOH solution at a temperature of 80°C for 1 hour Carry out surface degreasing, then put into slightly boiling 10% oxalic acid solution for 1 hour, carry out pickling and etching, and clean with deionized water, store in ultrapure water for later use;

[0038] Step 3: Connect the pretreated substrate to the negative pole of the DC po...

Embodiment 2

[0042] A kind of Cu-Sn-Bi electrode preparation and the method for degrading nitrate thereof, concrete steps are as follows:

[0043] Step 1, 60g / L Bi(NO 3 ) 3 ·5H 2 O, 42g / L CuP 2 o 7 , 2.6g / L SnP 2 o 7 , 60g / L KCl, 60g / L NaKC 4 h 4 o 6 4H 2 O, 90g / L EDTA-2Na, 120 / L C 7 h 6 o 6 S·2H 2 O, 240g / L K 4 o 7 P 2 , 30g / L Na 2 HPO 4 and 30g / L N(CH 2 COOH) 3 Soluble in deionized water as electrodeposition solution

[0044] Step 2. Cut the titanium plate so that the surface is 40mm×50mm, and then polish it with sandpaper of two different specifications, 120 mesh and 240 mesh, and then treat the polished titanium substrate in a 40% NaOH solution at a temperature of 80°C for 1 hour Degreasing the surface, then putting it into a slightly boiling 10% oxalic acid solution for 1 hour for pickling and etching, cleaning it with deionized water, and storing it in ultrapure water for later use;

[0045] Step 3: Connect the pretreated substrate to the negative pole of the DC...

Embodiment 3

[0049] A kind of Cu-Sn-Bi electrode preparation and the method for degrading nitrate thereof, concrete steps are as follows:

[0050] Step 1, 58g / L Bi(NO 3 ) 3 ·5H 2 O, 45g / L CuP 2 o 7 , 4.2g / L SnP 2 o 7 , 55g / L KCl, 65g / L NaKC 4 h 4 o 6 4H 2 O, 88g / L EDTA-2Na, 121 / L C 7 h 6 o 6 S·2H 2 O, 230g / L K 4 o 7 P 2 , 27g / L Na 2 HPO 4 and 25g / L N(CH 2 COOH) 3 Soluble in deionized water as electrodeposition solution;

[0051] Step 2. Cut the titanium plate so that the surface is 40mm×50mm, and then polish it with sandpaper of two different specifications, 120 mesh and 240 mesh, and then treat the polished titanium substrate in a 40% NaOH solution at a temperature of 80°C for 1 hour Carry out surface degreasing, then put into slightly boiling 10% oxalic acid solution for 1 hour, carry out pickling and etching, and clean with deionized water, store in ultrapure water for later use;

[0052] Step 3: Connect the pretreated substrate to the negative pole of the DC power...

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PUM

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Abstract

The invention provides a Cu-Sn-Bi electrode with high catalytic activity, and a preparation method and an application thereof. The electrode is prepared by dissolving the following components in deionized water by mass: 56 to 61 g / L of Bi(NO3)3.5H2O, 37 to 52.3 g / L of CuP2O7, 2.6 to 4.3 g / L of SnP2O7, 45 to 65 g / L of KCl, 45 to 65 g / L of NaKC4H4O6.4H2O, 85 to 92 g / L of EDTA-2Na, 118 to 123 g / L ofC7H6O6S.2H2O, 220 to 250 g / L of K4O7P2, 26 to 31 g / L of Na2HPO4 and 25 to 30 g / L N(CH2COOH)3. The process for preparation of the electrode provided by the invention has the following advantages: plating can be performed at a room temperature; working conditions are easy to maintain; a plating liquid has a simple formula with commonly-used chemicals with low price; no secondary synthesis is required; an obtained electrode plating layer is firmly bonded with a substrate; and the surface of the electrode is uniform. The Cu-Sn-Bi electrode provided by the invention has higher corrosion resistanceand good electrical conductivity, is used in the process of nitrate degradation, and has high catalytic efficiency.

Description

technical field [0001] The invention relates to the preparation of a Cu-Sn-Bi electrode and its method for degrading nitrate, belonging to the technical field of electrocatalysis, and the prepared electrode can be used for electrocatalyzing the degradation of nitrate in water. Background technique [0002] Due to the application of a large amount of nitrogenous fertilizers, as well as the unreasonable disposal of animal manure, domestic sewage and nitrogenous industrial wastewater, the groundwater in my country has been seriously polluted by nitrates, and groundwater is an important source of drinking water, 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 attrac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C25D3/56C02F101/16
CPCC02F1/46109C02F1/4678C02F2001/46142C02F2101/163C25D3/56
Inventor 高维春高陆璐李丹关银燕梁吉艳
Owner SHENYANG POLYTECHNIC UNIV
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