Titanium-based lead dioxide electrode for degrading rhodamine B, and preparation method and application thereof

A lead dioxide and titanium-based technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sewage treatment equipment, etc., to achieve the effects of improving oxygen evolution potential, simplifying the preparation process, and enhancing life

Pending Publication Date: 2020-04-10
XIAN TAIJIN NEW ENERGY & MATERIALS SCI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the titanium-based lead dioxide electrode has many of the above advantages, it still has a large room for improvement, and it is easy to improve the oxygen evolution potential and life of the electrode through modification (coating structure, doping, etc.)

Method used

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  • Titanium-based lead dioxide electrode for degrading rhodamine B, and preparation method and application thereof
  • Titanium-based lead dioxide electrode for degrading rhodamine B, and preparation method and application thereof
  • Titanium-based lead dioxide electrode for degrading rhodamine B, and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0036] see figure 1 Shown, the present invention provides a kind of titanium base lead dioxide electrode that is used for degrading rhodamine B, comprises titanium substrate layer, from titanium substrate, is plated with tin antimony oxide bottom layer and Ce, SDBS co-doped sequentially from inside to outside Modified PbO 2 Active layer, its specific preparation process is as follows:

[0037] 1) Titanium substrate pretreatment;

[0038] 2) Thermally deposited tin antimony oxide bottom layer;

[0039] 3) Electrodeposition of Ce, SDBS co-doped modified PbO 2 Active layer: the titanium substrate with thermally deposited tin antimony oxide coating is used as the anode, and the titanium substrate is used as the cathode, and the active layer is electrodeposited in a nitric acid system containing Ce, SDBS, lead nitrate and copper nitrate; electrodeposition The current density is 100~300A / m 2 , electrodeposition temperature 30 ~ 70 ℃, electrodeposition time 1 ~ 4h.

[0040] Fur...

Embodiment 2

[0057] see figure 1 Shown, the present invention provides a kind of titanium base lead dioxide electrode that is used for degrading rhodamine B, comprises titanium substrate layer, from titanium substrate, is plated with tin antimony oxide bottom layer and Ce, SDBS co-doped sequentially from inside to outside Modified PbO 2 Active layer, its specific preparation process is as follows:

[0058] 1) Titanium substrate pretreatment;

[0059] 2) Thermally deposited tin antimony oxide bottom layer;

[0060] 3) Electrodeposition of Ce, SDBS co-doped modified PbO 2 Active layer: the titanium substrate with thermally deposited tin antimony oxide coating is used as the anode, and the titanium substrate is used as the cathode, and the active layer is electrodeposited in a nitric acid system containing Ce, SDBS, lead nitrate and copper nitrate; electrodeposition The current density is 100~300A / m 2 , electrodeposition temperature 30 ~ 70 ℃, electrodeposition time 1 ~ 4h.

[0061] Fur...

Embodiment 3

[0072] see figure 1 Shown, the present invention provides a kind of titanium base lead dioxide electrode that is used for degrading rhodamine B, comprises titanium substrate layer, from titanium substrate, is plated with tin antimony oxide bottom layer and Ce, SDBS co-doped sequentially from inside to outside Modified PbO 2 Active layer, its specific preparation process is as follows:

[0073] 1) Titanium substrate pretreatment;

[0074] 2) Thermally deposited tin antimony oxide bottom layer;

[0075] 3) Electrodeposition of Ce, SDBS co-doped modified PbO 2 Active layer: the titanium substrate with thermally deposited tin antimony oxide coating is used as the anode, and the titanium substrate is used as the cathode, and the active layer is electrodeposited in a nitric acid system containing Ce, SDBS, lead nitrate and copper nitrate; electrodeposition The current density is 100~300A / m 2 , electrodeposition temperature 30 ~ 70 ℃, electrodeposition time 1 ~ 4h.

[0076] Fur...

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Abstract

The invention belongs to the field of electrochemical catalytic oxidation water treatment, and relates to a titanium-based lead dioxide electrode for degrading rhodamine B, and a preparation method and application thereof. The electrode includes a titanium matrix, a tin-antimony oxide layer, and an active layer (co-doped with Ce and SDBS). The preparation method includes direct deposition of a PbO2 active layer on the titanium matrix thermally deposited with the tin-antimony oxide bottom layer, a step of preparing an alpha-PbO2 layer is cancelled and preparation of the titanium-based lead dioxide electrode is simplified, thus improving the preparation efficiency of the titanium-based lead dioxide electrode. As the step of preparing an alpha-PbO2 layer is cancelled, and process parameters requiring adjustment and control in the step are cancelled, thus facilitating improvement of the percent of pass of finished products, reducing the production cost and greatly improving high oxygen evolution potential, catalytic activity, and service lifetime of the titanium-based lead dioxide electrode.

Description

technical field [0001] The invention belongs to the field of electrochemical catalytic oxidation water treatment, and relates to a titanium-based lead dioxide electrode for degrading rhodamine B, a preparation method and application thereof. Background technique [0002] Dyes are indispensable industrial products widely used in many fields, but they are toxic, mutagenic and carcinogenic. A large amount of dye-containing wastewater generated during industrial production is discharged into the natural environment, causing serious environmental pollution and adverse health effects. Many dyes have complex chemical compositions and toxicity, and are very stable, making them difficult to degrade chemically or biologically. It is predicted that more than 60% of the world's dyes are produced in China. With the rapid development of my country's dye industry, controlling the discharge of high-concentration dye wastewater to water bodies has become a challenge. Therefore, efficient ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/467C02F1/72C02F101/30
CPCC02F1/46109C02F1/4672C02F1/725C02F2001/46142C02F2101/308C02F2201/46105
Inventor 韦震康轩齐冯庆徐尚元周小康赵新泽万江凯
Owner XIAN TAIJIN NEW ENERGY & MATERIALS SCI TECH CO LTD
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