Graphene modified fluorine-contained lead dioxide electrode and preparation method thereof

A lead dioxide and graphene technology, applied in chemical instruments and methods, electrolytic coatings, liquid chemical plating, etc., can solve problems such as low current efficiency, service life needs to be further improved, etc., to achieve improved transfer speed, convenient management, The effect of improving conductivity

Active Publication Date: 2017-06-20
JILIN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the lead dioxide electrode still has problems such as low current efficiency and service life to be further improved during use.

Method used

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  • Graphene modified fluorine-contained lead dioxide electrode and preparation method thereof
  • Graphene modified fluorine-contained lead dioxide electrode and preparation method thereof
  • Graphene modified fluorine-contained lead dioxide electrode and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] as attached figure 1 Shown: the structure of graphene modified fluorine-containing lead dioxide electrode of the present invention comprises:

[0041] Titanium substrate 1;

[0042] Graphene-containing tin antimony oxide bottom layer 2 thermally deposited on a titanium substrate;

[0043] Graphene-containing α-PbO deposited on bottom layer 2 by sonoelectrodeposition 2 middle layer 3;

[0044] Graphene-containing β-PbO deposited on the interlayer 3 by sonoelectrodeposition 2 active layer 4.

[0045] The preparation method is as follows:

[0046] (1) Clean the graphite paper with absolute ethanol and deionized water, and dry it in an oven at 60°C for 1 hour. The electrolysis was carried out at a constant voltage using a DC regulated constant current switching power supply, graphite paper was used as the negative and positive electrodes, 100 ml of ammonium persulfate solution with a mass concentration of 0.4% was used as the electrolyte, the distance between the two ...

Embodiment 2

[0054] The preparation method of the electrode is the same as in Example 1.

[0055] The difference is that the sonoelectrodeposition of graphene-containing α-PbO 2 Interlayer and graphene-containing β-PbO 2 The concentration of graphene in the plating solution of the active layer is 0.5 g / L, and a graphene-modified fluorine-containing lead dioxide electrode is obtained.

[0056] The prepared graphene-modified fluorine-containing lead dioxide electrode is used as the anode, and the stainless steel plate of equal area is used as the cathode, and the distance between the electrodes is 1 cm. The electrocatalytic oxidation of phenol in water, the concentration of phenol is 50 mg / L, and the concentration of 0.05 mol / L is Sodium sulfate is used as the supporting electrolyte, the volume of the solution is 200 ml, the distance between the electrodes is 1 cm, and the electrocatalytic oxidation current density is 30 mA / cm 2 , the temperature was 30°C, and the removal rate of phenol wa...

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Abstract

The invention provides a graphene modified fluorine-contained lead dioxide electrode and a preparation method thereof. A tin antimony oxide bottom layer, an alpha-PbO2 middle layer and a beta-PbO2 active layer of the electrode all contain graphene. The preparation method comprises the steps of titanium plate pretreatment, thermal deposition of the tin antimony oxide bottom layer containing the graphene, acoustoelectric deposition of the alpha-PbO2 middle layer containing the graphene, and acoustoelectric deposition of the beta-PbO2 active layer containing the graphene. The graphene modified fluorine-contained lead dioxide electrode has the following advantages: the prepared graphene modified fluorine-contained lead dioxide electrode greatly is improved in electrocatalytic oxidation activity and largely prolonged in service life compared with a general fluorine-contained lead dioxide electrode, and is an anode material with development potential and suitable for electrocatalytic oxidation and degradation of organic pollutants in waste water.

Description

technical field [0001] The invention relates to a graphene-modified lead dioxide electrode and a preparation method thereof, which are used for electrocatalytic oxidation and degradation of organic pollutants in water, and belong to the fields of water treatment technology and electrochemistry. Background technique [0002] Electrocatalytic oxidation technology has the advantages of strong oxidizing ability, fast reaction rate, simple equipment, easy manipulation, and no secondary pollution. Anode material is the core of this technology, among which lead dioxide electrode is one of the most promising electrocatalytic oxidation anode materials, which has high catalytic oxidation activity, good conductivity, strong corrosion resistance, simple preparation and low price. However, the lead dioxide electrode still has problems such as low current efficiency and the need for further improvement of service life during the use process. Therefore, in recent years, a large number of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/04C23C18/12C25D15/00C25D5/20C25D3/02C02F1/461C02F101/30
CPCC02F1/46109C02F2001/46142C02F2101/30C23C18/1216C23C18/1262C23C28/04C25D3/02C25D5/20C25D15/00
Inventor 段小月常立民任新赵雪松汤茜
Owner JILIN NORMAL UNIV
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