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Scandium doped stannic oxide micropore anode, preparation method and application thereof

A tin dioxide and electrode technology, applied in chemical instruments and methods, electrode shape/type, sterilization/microdynamic water/sewage treatment, etc., can solve the difficulty of Ti/BDD electrode preparation, doping has not been reported, water body Secondary pollution and other problems, to achieve the effect of good industrial application prospects, high catalytic activity, and high mineralization rate of organic matter

Active Publication Date: 2015-05-27
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to Ti / PbO 2 The electrode may dissolve lead ions during the electrolysis process, which will cause secondary pollution of the water body. However, Ti / BDD electrodes are difficult to prepare and expensive, which is not conducive to industrial application and development. Therefore, Ti / SnO 2 -Sb electrode has become the main option for electrochemical treatment of refractory biodegradable organic wastewater, but its catalytic activity and service life need to be continuously improved
[0005] In recent years, rare earth-doped tin dioxide electrodes have been studied in a series, but the doping of Sc as a "boron-like element" has not been reported.

Method used

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  • Scandium doped stannic oxide micropore anode, preparation method and application thereof
  • Scandium doped stannic oxide micropore anode, preparation method and application thereof
  • Scandium doped stannic oxide micropore anode, preparation method and application thereof

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Effect test

Embodiment 1

[0028] 1. Preparation of electroplating solution: SbCl 3 The powder is dissolved in concentrated HCl, and a certain amount of SnCl is added 4 ·5H 2 O, fully dissolved with absolute ethanol, the volume ratio of absolute ethanol to concentrated HCl is 50:1, SnCl in the final solution 4 The concentration is 0.45~0.50mol / L, the molar ratio of Sn:Sb is 100:10, and it is stored for a period of time for later use.

[0029] 2. Preparation of impregnation solution: Scandium oxide (Sc 2 o 3 ) powder is dissolved in an appropriate amount of concentrated HCl, boiled in an electric furnace until the powder is dissolved, and SbCl is added 3 Crystals, stir well until dissolved, add SnCl 4 ·5H 2 O crystals, add a certain amount of n-butanol to dissolve, and under the assistance of ultrasound, heat to form a uniform and stable solution. The volume ratio of n-butanol to concentrated HCl is 20:1, and the SnCl in the final solution 4 The concentration is 0.80-0.85 mol / L, the molar ratio of...

Embodiment 2

[0037] Embodiment 2: (Sn:Sc molar ratio is 100:1, other conditions are the same as embodiment 1)

[0038] 1. Preparation of electroplating solution: SbCl 3 The powder is dissolved in concentrated HCl, and a certain amount of SnCl is added 4 ·5H 2 O, fully dissolved with absolute ethanol, the volume ratio of absolute ethanol to concentrated HCl is 50:1, SnCl in the final solution 4 The concentration is 0.45-0.50mol / L, the molar ratio of Sn:Sb is 100:10, and it is stored for a period of time for later use.

[0039] 2. Preparation of impregnation solution: Scandium oxide (Sc 2 o 3 ) powder is dissolved in an appropriate amount of concentrated HCl, boiled in an electric furnace until the powder is dissolved, and SbCl is added 3 Crystals, stir well until dissolved, add SnCl 4 ·5H 2 O crystals, add a certain amount of n-butanol to dissolve, and under the assistance of ultrasound, heat to form a uniform and stable solution. The volume ratio of n-butanol to concentrated HCl is ...

Embodiment 3

[0046] Embodiment 3: (Sn:Sc molar ratio is 400:1, other conditions are the same as embodiment 1)

[0047] 1. Preparation of electroplating solution: SbCl 3 The powder is dissolved in concentrated HCl, and a certain amount of SnCl is added 4 ·5H 2 O, fully dissolved with absolute ethanol, the volume ratio of absolute ethanol to concentrated HCl is 50:1, SnCl in the final solution 4 The concentration is 0.45~0.50mol / L, the molar ratio of Sn:Sb is 100:10, and it is stored for a period of time for later use.

[0048] 2. Preparation of impregnation solution: Scandium oxide (Sc 2 o 3 ) powder is dissolved in an appropriate amount of concentrated HCl, boiled in an electric furnace until the powder is dissolved, and SbCl is added 3 Crystals, stir well until dissolved, add SnCl 4 ·5H 2 O crystals were dissolved by adding a certain amount of n-butanol, and heated to form a uniform and stable solution with the assistance of ultrasound. The volume ratio of n-butanol to concentrated...

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Abstract

The invention relates to a scandium doped stannic oxide micropore anode, a preparation method and application thereof, belonging to the field of electrochemical water treatment technology. An mp-Ti plate is taken as a matrix, and SnO2-Sb and SnO2-Sb-Sc are sequentially arranged on the mp-Ti plate. The preparation method comprises steps of (1) preparing mixed solution of SbCl3 and SnCl4; (2) preparing mixed solution containing Sc, SbCl3 and SnCl4, pretreating a micropore titanium plate, then electroplating in the solution of step (1), then soaking the obtained product in the solution of step (2) and calcining at high temperature, finally, washing thoroughly by water and drying. The electrode is used for electrocatalytic oxidation of phenol in water, and has excellent capacity in removing and mineralizing phenol. The electrode prepared by the method has high catalytic activity, good stability and long service life, and has certain application prospect.

Description

technical field [0001] The invention relates to a microporous anode, in particular to a scandium-doped tin dioxide microporous anode, a preparation method and application, and belongs to the technical field of electrochemical water treatment. Background technique [0002] Phenol is a raw material and intermediate produced in industries such as papermaking, coking, oil refining, plastics, pesticides, and pharmaceutical synthesis. With the development of industry, the discharge of phenolic wastewater is also increasing year by year. Phenol-containing wastewater is very harmful to humans and other organisms. Low concentrations of phenol can denature proteins, while high concentrations of phenol can coagulate proteins. Phenol can also damage human nerves and cause systemic poisoning. The U.S. Environmental Protection Agency (USEPA) has listed phenolic compounds as one of the priority pollutants, and my country has also listed them as key hazardous substances. [0003] At pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/03C02F1/467C02F1/58
Inventor 孙治荣张欢魏学锋
Owner BEIJING UNIV OF TECH
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