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Preparation method and application of titanium dioxide modified lead dioxide electrode

A technology of lead dioxide and titanium dioxide, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of low catalytic efficiency, short electrode life, small electrode surface area, etc., and achieve simple preparation process and easy operation Convenience, the effect of improving the oxygen evolution potential

Inactive Publication Date: 2017-05-31
HEBEI ZHISHENG GREEN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure use of PbO 2 The electrode has a small electrode surface area, which leads to low catalytic efficiency and short electrode life; and the pure use of electrocatalytic methods also limits the catalytic efficiency to a certain extent. Although small molecules can be removed well, for some in actual sewage Macromolecular substances still need further verification

Method used

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  • Preparation method and application of titanium dioxide modified lead dioxide electrode
  • Preparation method and application of titanium dioxide modified lead dioxide electrode
  • Preparation method and application of titanium dioxide modified lead dioxide electrode

Examples

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Comparison scheme
Effect test

Embodiment 1

[0042] The preparation steps of a titanium dioxide modified lead dioxide electrode are as follows:

[0043] Step 1. Pretreatment of titanium plate

[0044] First immerse the titanium plate in ethanol to remove oil for 30 minutes, then polish the titanium plate with 320-mesh and 600-mesh sandpaper respectively, then cut the titanium plate into square pieces of 20mm×50mm and ultrasonically clean it for 15min, and then immerse the titanium plate until the temperature is 80°C and 20% oxalic acid aqueous solution for 1.5h to remove the oxide layer; after removing the titanium plate from the oxalic acid solution, wash it with deionized water and dry it;

[0045] Step 2. Preparation of tin antimony oxide interlayer

[0046] Coat the solution containing tin ions and antimony ions on the pretreated titanium plate in step 1, and then dry the titanium plate in a drying oven at 100°C for 10 minutes. After the solvent on the surface of the titanium plate evaporates, put the titanium plate...

Embodiment 2

[0055] The preparation steps of a titanium dioxide modified lead dioxide electrode are as follows:

[0056] Step 1. Pretreatment of titanium plate

[0057] First immerse the titanium plate in ethanol to remove oil for 30 minutes, then polish the titanium plate with 320-mesh and 600-mesh sandpaper respectively, then cut the titanium plate into square pieces of 20mm×50mm and ultrasonically clean it for 15min, and then immerse the titanium plate until the temperature is 75°C and 12% oxalic acid aqueous solution for 3 hours to remove the oxide layer; after removing the titanium plate from the oxalic acid solution, wash it with deionized water and dry it;

[0058] Step 2. Preparation of tin antimony oxide interlayer

[0059] Coat the solution containing tin ions and antimony ions on the pretreated titanium plate in step 1, and then dry the titanium plate in a drying oven at 90°C for 15 minutes. After the solvent on the surface of the titanium plate evaporates, put the titanium pla...

Embodiment 3

[0067] The preparation steps of a titanium dioxide modified lead dioxide electrode are as follows:

[0068] Step 1. Pretreatment of titanium plate

[0069] First immerse the titanium plate in ethanol to remove oil for 30 minutes, then polish the titanium plate with 320-mesh and 600-mesh sandpaper respectively, then cut the titanium plate into square pieces of 20mm×50mm and ultrasonically clean it for 15min, and then immerse the titanium plate until the temperature is 90°C and 18% oxalic acid aqueous solution for 1.5h to remove the oxide layer; after taking the titanium plate out of the oxalic acid solution, wash it with deionized water and dry it;

[0070] Step 2. Preparation of tin antimony oxide interlayer

[0071] Coat the solution containing tin ions and antimony ions on the pretreated titanium plate in step 1, and then dry the titanium plate in a drying oven at 110°C for 15 minutes. After the solvent on the surface of the titanium plate evaporates, put the titanium plate...

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Abstract

The invention relates to a preparation method and application of a titanium dioxide modified lead dioxide electrode, and belongs to the technical field of electrode materials. The method comprises the following steps: cleaning a titanium plate, then roughening the titanium plate, steeping the titanium plate into an oxalic acid aqueous solution to remove an oxide layer, finally cleaning the titanium plate with deionized water, and blowing the titanium plate to dry; coating the treated titanium plate with a solution containing tin ions and antimony ions, carrying out sintering, and repeating the coating and sintering processes for multiple times to obtain a titanium plate with a coated middle layer; carrying out electro-deposition by using a lead plate as a negative electrode, the titanium plate as a positive electrode with the coated middle layer and a TiO2 particle-containing Pb(NO3)2 and NaF mixed solution as an electro-deposition solution, thus obtaining the electrode. The electrode preparation process is simple, convenient to operate and low in comprehensive cost; the prepared electrode fully develops the photoelectric synergistic catalytic action of TiO2 and PbO2, is outstanding in effect of degrading an azo-organic dye, and is long in service life.

Description

technical field [0001] The invention relates to a preparation method and application of a titanium dioxide modified lead dioxide electrode, in particular to a titanium dioxide modified lead dioxide electrode (Ti / SnO for short) which uses titanium as a substrate and contains a tin antimony oxide intermediate layer. 2 -Sb 2 o 3 / PbO 2 -TiO 2 Electrode) and its application in photoelectric catalytic degradation of pollutants belong to the technical field of electrode materials. Background technique [0002] PbO 2 As an electrode material, it is widely used in oxygen evolution reaction, chemical production, ozone preparation and wastewater treatment (Li X, Pletcher D, Walsh F C. Electrodeposited lead dioxide coatings[J]. Chemical Society Reviews, 2011, 40: 3879-3894.). Nanofunctional materials, as a kind of reinforcement composited with the matrix, have many new properties different from conventional materials, such as small size effect, surface effect, macroscopic quantum...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F101/30C02F101/38
Inventor 李杨陈智刘治生
Owner HEBEI ZHISHENG GREEN TECH
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