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Preparation method of antimony-doped stannic oxide aerogel-titanium electrode

A tin dioxide and aerogel technology, applied in the field of electrodes, can solve the problems of low electrode specific surface area, limited electrochemical area, and few catalytic active sites, etc.

Inactive Publication Date: 2020-02-28
许嘉琦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But traditional Sb / SnO 2 - Ti electrode has low specific surface area, very limited electrochemical area, and few catalytic active sites

Method used

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  • Preparation method of antimony-doped stannic oxide aerogel-titanium electrode
  • Preparation method of antimony-doped stannic oxide aerogel-titanium electrode
  • Preparation method of antimony-doped stannic oxide aerogel-titanium electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (11) Grinding the surface of the titanium sheet with sandpaper, soaking the polished titanium sheet into a NaOH solution with an initial temperature of 90° C. and a concentration of 9% to boil for 50 minutes to remove oil stains on the surface of the titanium sheet;

[0032] (12) put the titanium sheet with the surface oil stain removed into the concentration of 9% oxalic acid solution at 55° C. The titanium sheet is immersed in the ethanol solution and stored for later use;

[0033] (13) to SnCl 4 ·5H 2 Add deionized water to O and stir until SnCl 4 ·5H 2 Obtain colorless and transparent liquid A after O is completely dissolved; to SbCl 3 Concentrated hydrochloric acid was added dropwise, and stirred until SbCl 3 Obtain colorless and transparent liquid B after complete dissolution;

[0034] (14) Mix the liquid A and the liquid B to obtain the mixed liquid C, if the mixed liquid C becomes turbid, add concentrated hydrochloric acid until the mixed liquid C is color...

Embodiment 2

[0040] (21) Grinding the surface of the titanium sheet with sandpaper, soaking the polished titanium sheet into an initial temperature of 90° C. and boiling in a 10% NaOH solution for 60 minutes to remove oil stains on the surface of the titanium sheet;

[0041](22) Put the titanium sheet that has removed surface oil stains into a 10% oxalic acid solution at 60°C and etch for 2 hours, so that the surface of the etched titanium sheet appears gray, uniform and rough, and the etched titanium sheet The slices were immersed in ethanol solution and stored for later use;

[0042] (23) to SnCl 4 ·5H 2 Add deionized water to O and stir until SnCl 4 ·5H 2 Obtain colorless and transparent liquid A after O is completely dissolved; to SbCl 3 Concentrated hydrochloric acid was added dropwise, and stirred until SbCl 3 Obtain colorless and transparent liquid B after complete dissolution;

[0043] (24) Mix the liquid A and the liquid B to obtain a mixed liquid C, if the mixed liquid C be...

Embodiment 3

[0049] (31) Grinding the surface of the titanium sheet with sandpaper, infiltrating the polished titanium sheet into an initial temperature of 90° C. and boiling in an 11% NaOH solution for 70 minutes to remove oil stains on the surface of the titanium sheet;

[0050] (32) Put the titanium sheet from which surface oil stains have been removed into an oxalic acid solution with a concentration of 11% at 65° C. The titanium sheet is immersed in the ethanol solution and stored for later use;

[0051] (33) to SnCl 4 ·5H 2 Add deionized water to O and stir until SnCl 4 ·5H 2 Obtain colorless and transparent liquid A after O is completely dissolved; to SbCl 3 Concentrated hydrochloric acid was added dropwise, and stirred until SbCl 3 Obtain colorless and transparent liquid B after complete dissolution;

[0052] (34) Mixing the liquid A and the liquid B to obtain the mixed liquid C, if the mixed liquid C becomes turbid, add concentrated hydrochloric acid until the mixed liquid C...

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Abstract

The invention discloses a preparation method of an antimony-doped stannic oxide aerogel-titanium electrode. The preparation method comprises the following steps: soaking a polished titanium sheet in aNaOH solution to be boiled to remove oil stains on the surface of the titanium sheet, and conveying the titanium sheet in an oxalic acid solution to be etched; adding deionized water into SnCl<4>*5H<2>O to for complete dissolving to obtain a colorless and transparent liquid A; dropwise adding concentrated hydrochloric acid into SbCl3, and stirring until complete dissolving is achieved to obtain acolorless and transparent liquid B; stirring a mixed solution C, dropwise adding formamide, and dropwise and slowly adding epoxypropane to gradually change the mixed solution C into a wet gel; carrying out solvent replacement on the obtained wet gel by adopting an absolute ethyl alcohol solution, and carrying out freeze drying to form an aerogel; calcining the freeze-dried aerogel at a high temperature to obtain an antimony-doped stannic oxide aerogel; and uniformly smearing the aerogel on the surface of the etched titanium sheet through a conductive adhesive to obtain the antimony-doped stannic dioxide aerogel-titanium electrode. The electrode specific surface area is increased, catalytic active sites are increased, and the electro-catalytic degradation capacity on methyl orange is improved.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of electrodes, in particular to a method for preparing an antimony-doped tin dioxide airgel-titanium electrode. Background technique [0002] With the widespread use of dyes in the fields of medicine, food, printing and dyeing, etc., the water pollution caused by dye wastewater has become more and more serious, and most dye wastewater is difficult to degrade naturally, especially those that account for about 50%-70% of the world's dye production. Azo dyes, with their high organic content and stable structure, make them more difficult to degrade. The electrochemical oxidation method provides feasibility for degrading such pollutants. As one of the advanced oxidation technologies, it has the advantages of strong oxidation ability, fast reaction rate, low equipment cost, and wide application range. It reduces operating costs and improves The efficiency of electrocatalytic treatment is...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/72C02F101/30C02F101/38
CPCC02F1/46109C02F1/725C02F2001/46138C02F2101/308C02F2101/38C02F2201/46105
Inventor 许嘉琦张良柴守宁
Owner 许嘉琦
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