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Carbon nanotube modified lead dioxide electrode and preparation method thereof

A carbon nanotube and lead dioxide technology, applied in chemical instruments and methods, electrolytic coatings, electrolytic inorganic material coatings, etc., can solve the problems of low current efficiency and short service life, and achieve obvious effects, convenient management and simple process. Effect

Active Publication Date: 2017-06-09
JILIN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lead dioxide electrode still has the disadvantages of low current efficiency and short service life during use.

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0042] as attached figure 1 Shown: the structure of the carbon nanotube modified lead dioxide electrode of the present invention comprises:

[0043] Titanium plate substrate 1;

[0044] Tin antimony oxide bottom layer 2 thermally deposited on the titanium plate substrate;

[0045] Electrodeposition of α-PbO on Tin Antimony Oxide Underlayer 2 2 middle layer 3;

[0046] Electrodeposition on α-PbO 2 β-PbO on interlayer 3 2 Inner layer 4.

[0047] Electrophoresis on β-PbO 2 The carbon nanotube interlayer 5 on the inner layer 4.

[0048] Electrodeposition of β-PbO on Electrocarbon Nanotube Interlayer 5 2 Outer layer6.

[0049] The preparation method is as follows:

[0050] (1) Polish the titanium plate substrate (30 mm × 50 mm × 0.8 mm) with 120 mesh, 600 mesh and 1200 mesh sandpaper in sequence until the titanium plate substrate presents a silvery white metallic luster, and place the polished titanium plate substrate in acetone in turn Ultrasonic treatment with deionize...

Embodiment 2

[0059] The preparation method of the electrode is the same as in Example 1.

[0060] The difference is that electrodeposited β-PbO 2 The time of the outer layer is 10min, and the lead dioxide electrode modified by carbon nanotubes is obtained, and the electrode morphology is as follows Figure 4 Shown: by Figure 4 It can be seen that incomplete β-PbO is formed on the surface of the carbon nanotube interlayer 2 Crystalline film layer, with a small amount of carbon nanotubes exposed on the electrode surface, β-PbO around the carbon nanotubes 2 The crystal grain size is significantly smaller than ordinary lead dioxide electrodes.

[0061] The prepared carbon nanotube modified 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, and the electrocatalytic oxidation of p-chlorophenol in water, the concentration of p-chlorophenol is 50 mg / L, 0.05 mole Sodium sulfate per li...

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Abstract

The invention provides a carbon nanotube modified lead dioxide electrode in an electrocatalytic oxidation process, and a preparation method thereof. The preparation method for the lead dioxide electrode comprises the following steps: preprocessing a titanium plate, and carrying out heat deposition on a tin-antimony oxide bottom layer, an electrolytic deposition alpha-PbO2 intermediate layer, an electrolytic deposition beta-PbO2 internal layer, an electrophoresis carbon nanotube interlayer and an electrolytic deposition beta-PbO2 surface layer. The carbon nanotube modified lead dioxide electrode prepared with the preparation method has the advantages of large specific surface area, high hydroxyl radical production ability, high electrocatalytic oxidation activity and long service life, and is an electrode material which has a development potential and is suitable for an electrocatalytic oxidation process.

Description

technical field [0001] The invention relates to a lead dioxide electrode modified by carbon nanotubes and a preparation method thereof, which is used for electrocatalytic oxidation to remove organic pollutants in water, and belongs to the field of water treatment technology and electrochemistry. Background technique [0002] In recent years, the electrocatalytic oxidation method has become the preferred method of water treatment technology due to its incomparable advantages such as no or little consumption of chemical reagents, no secondary pollution, easy operation and control, and ability to mineralize refractory biodegradable organic matter. Research hotspots. However, there are still disadvantages such as low current efficiency of the electrode, short life of the electrode or high cost of the electrode. Therefore, how to prepare electrodes with high electrocatalytic oxidation activity, high stability and low price is an important issue in this field. [0003] Lead diox...

Claims

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Application Information

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IPC IPC(8): C02F1/461C25D9/04C25D15/00C02F101/36C02F101/30
CPCC02F1/461C02F2001/46138C02F2001/46152C02F2101/30C02F2101/36C25D9/04C25D15/00
Inventor 段小月常立民刘伟赵雪松任新
Owner JILIN NORMAL UNIV
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