Carbon nanotube modified lead dioxide electrode and preparation method and application thereof

A technology of carbon nanotube modification and lead dioxide, applied in the field of electrochemistry, can solve the problems of undegraded medical wastewater

Pending Publication Date: 2021-04-30
SUZHOU XINER ENVIRONMENTAL TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the lead dioxide electrode prepared above is only applied to the degradation of organic matter, and there is no report on the degradation of medical wastewater.

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  • Carbon nanotube modified lead dioxide electrode and preparation method and application thereof
  • Carbon nanotube modified lead dioxide electrode and preparation method and application thereof
  • Carbon nanotube modified lead dioxide electrode and preparation method and application thereof

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preparation example Construction

[0036]According to another aspect of the present invention, there is also provided a method of preparing a carbon nanotube modified neutral electrode, the preparation method comprising the steps of:

[0037]Matrix pretreatment;

[0038]A metal oxide underlayer is prepared on the surface of the substrate;

[0039]Provide carbon nanotubes;

[0040]The carbon nanotubes are doped into the lead source, and the electrodeposition is modified to beta-Pbo2Further, the carbon nanotubes modified a lead electrode.

[0041]The pretreatment of the present invention preferably includes: placing the substrate into a solution containing a ketone and a base, is ultrasonic, and then etching, cleaning in an acid solution under high temperature conditions, and is stored in an acid storage liquid. The present invention performs pretreatment of the substrate, and can have an increase in the amount of electrodeposition area to increase the bonding force of the substrate and the active layer.

[0042]In the present invention...

Embodiment 1

[0105](1) Preparation of nickel matrix, polished the tied nickel base (2cm * 5cm), sequentially polished, wash it with deionized water; put the polished nickel net into acetone and 0.8mol·L-1Ultrasound treatment in NaOH (V / V = ​​1: 3) for 30 min, and then placed in deionized water for 30 min; then placed the nickel base at 15% (mass fraction) oxalic acid etching liquid etching 1h, then use A large amount of deionized water cleaned the nickel base after etching, and then preserved in the oxalic acid preservation fluid of 1.0% (mass fraction).

[0106](II) Preparation of the bottom layer of the tin oxide, 15 g tin tin and 1 g of trichloride (mass ratio 15: 1) is dissolved in 1.5 g of concentration hydrochloric acid (concentration of 37 wt%) and 70 g of isopropyl alcohol mixing solution The coating liquid was formed, and the coating liquid was evenly applied to the surface of the treated nickel base, dried at 120 ° C for 20 min at 120 ° C, and then placed at 600 ° C for 20 min at 600 ° ...

Embodiment 2

[0111](1) Pretreatment of titanium-based body, polished the treated titanium base (2cm * 5cm), sequentially polished, washed with deionized water; put the polished titanium net into acetone and 0.8mol·L-1Ultrasound treatment in NaOH (V / V = ​​1: 3) for 30 min, and then placed in deionized water for 30 min; then placed the titanium base in 15% (mass fraction) oxalic acid etching fluid etching 1h, then use A large amount of deionized water cleaned the titanium base after etching, and then preserved in an oxalic acid preservation liquid in a 1.0% (mass fraction).

[0112](2) Preparation of the bottom layer of the ruthenium oxide, 15 g of tetrachloride and 1 g of trichloride (mass ratio 15: 1) were dissolved in 1.5 g of concentration hydrochloric acid (concentration of 37 wt%) and 70 g of isopropyl alcohol mixed solution. The coating liquid was made, and the coating liquid was evenly coated onto the surface of the treated titanium-based body, dried at 120 ° C for 20 min in the oven, and t...

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Abstract

The invention provides a carbon nanotube modified lead dioxide electrode as well as a preparation method and application thereof, and relates to the technical field of electrochemistry. The carbon nanotubes with rich functional characteristics are introduced into the active layer of the lead dioxide electrode, so that the specific surface area, the electrocatalytic oxidation activity and the service life of the electrode are prolonged, and the electrode is applied to the field of electrocatalytic degradation of medical wastewater for the first time. Results of the embodiment show that when the carbon nanotube-modified lead dioxide electrode provided by the invention is applied to medical wastewater, the total organic carbon removal rate reaches 90% or above, and the antibiotic removal rate reaches 95% or above.

Description

Technical field[0001]The present application relates to the field of electrochemical techniques, and more particularly to a carbon nanotube modified neutral lead electrode and a preparation method thereof.Background technique[0002]In recent years, with the improvement of people's living standards, people have paid more and more attention to health, which has driven the vigorous development of hospitals and medical institutions. However, in the process of development, there will be a lot of medical wastewater, and there are many chemical agents such as antibiotics in these wastewater. There is a huge harm to the environment and human health, so how to reasonably address medical wastewater has received more and more attention.[0003]Advanced oxidation technology has the advantages of efficient, fast, convenient, green, non-pollution, which also makes it stand out in many wastewater treatment techniques. Among them, electrocatalytic oxidation is one of high-grade oxidation techniques, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F101/34C02F101/36C02F101/38
CPCC02F1/46109C02F2001/46142C02F2103/003C02F2101/38C02F2101/36C02F2101/34C02F2101/40
Inventor 孙承林王盛哲唐叶红刘景光卫皇曌谭向东
Owner SUZHOU XINER ENVIRONMENTAL TECH CO LTD
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