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Preparation method for molybdenum-antimony co-doped titanium-based stannic oxide electrocatalysis electrode

A tin dioxide and co-doping technology, applied in the direction of sterilization/microdynamic water/sewage treatment, etc., can solve the problem of high price, and achieve the effects of thorough treatment, simple and controllable preparation method, and easy large-scale electrode preparation.

Active Publication Date: 2015-03-04
沈阳柏益博硕科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, many scholars have prepared Ti / SnO2-Sb electrodes doped with rare earth elements, and studied its optimal preparation process and its electrocatalytic oxidation performance. However, rare earth elements are generally expensive, while molybdenum is low in cost and has a wide range of sources, and can effectively improve the performance of Ti / SnO2-Sb electrodes. Therefore, the present invention proposes a molybdenum element Novel molybdenum and antimony co-doped titanium-based tin dioxide electrocatalytic electrode and preparation method thereof

Method used

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  • Preparation method for molybdenum-antimony co-doped titanium-based stannic oxide electrocatalysis electrode
  • Preparation method for molybdenum-antimony co-doped titanium-based stannic oxide electrocatalysis electrode
  • Preparation method for molybdenum-antimony co-doped titanium-based stannic oxide electrocatalysis electrode

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preparation example Construction

[0033] The invention is a preparation method of a novel molybdenum and antimony co-doped titanium-based tin dioxide electrocatalytic electrode, such as figure 1 As shown, the method steps are as follows:

[0034] (1) Pretreatment of the titanium substrate: the titanium substrate is polished with 120# and 240# water-resistant sandpaper, and then washed with a mass concentration of 40% NaOH solution at 80°C for 1 hour to remove oil, and then cleaned with a mass concentration of 10~15 % oxalic acid solution was etched in a slightly boiling state for 1 h, washed with distilled water and stored in ultrapure water.

[0035] (2) Preparation of sol: using ethanol as the solvent, the atomic molar ratio of Sn, Sb, and Mo is 100:3:1~3, and the source of the above elements is SnCl 4 · 5H 2 O, Sb 2 o 3 , (NH 4 ) 6 Mo 7 o 24 and other raw materials, add complexing agent citric acid and ethylene glycol, wherein the molar ratio of metal ion, citric acid and ethylene glycol is 1:3:3; m...

Embodiment 1

[0041] A method for preparing a novel molybdenum and antimony co-doped titanium-based tin dioxide electrocatalytic electrode, the steps are as follows:

[0042] (1) Pretreatment of the titanium substrate: the titanium substrate is polished with 120# and 240# water-resistant sandpaper, and then degreased with 40% NaOH solution at 80°C for 1 hour, and then etched with 10% oxalic acid solution in a slightly boiling state 1h, washed with distilled water and stored in ultrapure water.

[0043] (2) Preparation of sol: use ethanol as the solvent, the atomic molar ratio of Sn, Sb, and Mo is 100:3:1, and the source of the above elements is SnCl 4 · 5H 2 O, Sb 2 o 3 , (NH 4 ) 6 Mo 7 o 24 and other raw materials, adding complexing agent citric acid and ethylene glycol, wherein the molar ratio of metal ions, citric acid and ethylene glycol is 1:3:3. After the raw materials are completely dissolved, fully stir in a 60°C water bath for 1 hour, and then stand and age in a 60°C water ...

Embodiment 2

[0047] A method for preparing a novel molybdenum and antimony co-doped titanium-based tin dioxide electrocatalytic electrode, the steps are as follows:

[0048] (1) Pretreatment of the titanium substrate: the titanium substrate is polished with 120# and 240# water-resistant sandpaper, and then degreased with 40% NaOH solution at 80°C for 1 hour, and then etched with 15% oxalic acid solution in a slightly boiling state 1h, washed with distilled water and stored in ultrapure water.

[0049] (2) Preparation of sol: use ethanol as the solvent, the atomic molar ratio of Sn, Sb, and Mo is 100:3:2, and the source of the above elements is SnCl 4 · 5H 2 O, Sb 2 o 3 , (NH 4 ) 6 Mo 7 o 24 and other raw materials, adding complexing agent citric acid and ethylene glycol, wherein the molar ratio of metal ions, citric acid and ethylene glycol is 1:3:3. After the raw materials are completely dissolved, fully stir in a 60°C water bath for 1 hour, and then stand and age in a 60°C water ...

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Abstract

The invention discloses a preparation method for a molybdenum-antimony co-doped titanium-based stannic oxide electrocatalysis electrode, and belongs to the technical field of catalytic electrodes. The preparation method comprises: firstly using a sol-gel process for preparing the molybdenum-antimony co-doped titanium-based stannic oxide electrocatalysis electrode, concretely pretreating a titanium matrix, taking SnCl4.5H2O, Sb2O3 and (NH4)6Mo7O24 as raw materials, and preparing a sol according to the Sn:Sb:Mo atomic ratio of 100:3:1-3, employing a dipping-pulling process dip-coating technology, controlling the dipping time and the pulling speed, employing gradient-program heating sintering processing, and controlling the heat treatment temperature and the heat treatment time of each heating stage, so as to prepare the molybdenum-antimony co-doped titanium-based stannic oxide electrocatalysis electrode. The prepared electrode is relatively low in cost, uniform and dense in surface, good in stability and relatively strong in degradation capability on phenols, caprolactam, reactive black KN-B and other organic pollutants with different structures.

Description

technical field [0001] The invention relates to a method for preparing a molybdenum and antimony co-doped titanium-based tin dioxide electrocatalytic electrode, which belongs to the technical field of catalytic electrodes. Background technique [0002] With the development of industry, the pollution of water bodies by human beings has become more and more serious. More and more biodegradable and biotoxic organic pollutants have appeared in sewage. Conventional physical and chemical methods are difficult to deal with these organic substances, and may produce For problems such as secondary pollution, traditional biological treatment methods can only effectively remove biocompatible organic matter in water bodies. Electrocatalytic oxidation technology has attracted widespread attention in the field of water treatment in recent years due to its characteristics of more thorough degradation of organic matter, high efficiency, and easy operation. [0003] The electrode is the cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/467
Inventor 梁吉艳耿聰李丹
Owner 沈阳柏益博硕科技有限公司
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