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A kind of ti doped with rare earth metal 4 o 7 Electrode preparation method

A technology of rare earth metals and rare earth metal salts, applied in the field of electrochemistry, can solve problems such as weak ability to produce OH and limited electrodes

Active Publication Date: 2022-04-01
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As an anode, Ti4O7 can directly transfer electrons with pollutants, and can also generate OH to oxidize and remove pollutants, and OH is in a weakly adsorbed state on the electrode surface , has high strong oxidation and utilization rate, but its ability to produce OH is weak, which limits the application of Ti4O7 electrode

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  • A kind of ti doped with rare earth metal <sub>4</sub> o <sub>7</sub> Electrode preparation method

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Experimental program
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Effect test

Embodiment 1

[0037] A kind of Ti doped with rare earth metal 4 o 7 The preparation method of electrode, concrete steps are as follows,

[0038] S1, Ti 4 o 7 Preparation of powder:

[0039] TiO 2 Grind into powder, add polyvinyl alcohol, stir, and carry out high-temperature reduction after stirring evenly, introduce hydrogen and argon, heat and pressurize, the temperature is 1000°C, and the reaction time is 1h. During the reaction, polyvinyl alcohol is recovered, and after the reaction is completed , cooled and ground to obtain Ti 4 o 7 powder;

[0040] S2, the treatment of polyvinyl alcohol:

[0041] At room temperature, add sodium dodecylbenzenesulfonate, cetyltrimethylammonium bromide, and deionized water to the recovered polyvinyl alcohol, stir evenly, add butyraldehyde and acid solution, cool down, and The temperature is 8°C, the reaction time is 1h, and after the reaction, the pH is adjusted to be alkaline to obtain the auxiliary agent;

[0042] S3, the preparation of electr...

Embodiment 2

[0051] A kind of Ti doped with rare earth metal 4 o 7 The preparation method of electrode, concrete steps are as follows,

[0052] S1, Ti 4 o 7 Preparation of powder:

[0053] TiO 2 Grind into powder, add polyvinyl alcohol, stir, and then carry out high-temperature reduction after stirring evenly, introduce hydrogen and argon, heat and pressurize, the temperature is 1050°C, the reaction time is 1.3h, recover polyvinyl alcohol during the reaction, and wait for the reaction to end After that, the temperature was lowered and ground to obtain Ti 4 o 7 powder;

[0054] S2, the treatment of polyvinyl alcohol:

[0055] At room temperature, add sodium dodecylbenzenesulfonate, cetyltrimethylammonium bromide, and deionized water to the recovered polyvinyl alcohol, stir evenly, add butyraldehyde and acid solution, cool down, and The temperature is 9°C, the reaction time is 1.3h, and after the reaction, the pH is adjusted to be alkaline to obtain the auxiliary agent;

[0056] S3...

Embodiment 3

[0065] A kind of Ti doped with rare earth metal 4 o 7 The preparation method of electrode, concrete steps are as follows,

[0066] S1, Ti 4 o 7 Preparation of powder:

[0067] TiO 2 Grind into powder, add polyvinyl alcohol, stir, stir evenly, carry out high-temperature reduction, feed hydrogen and argon, heat and pressurize, the temperature is 1100 ° C, the reaction time is 1.5h, recover polyvinyl alcohol during the reaction, and wait for the reaction to end After that, the temperature was lowered and ground to obtain Ti 4 o 7 powder;

[0068] S2, the treatment of polyvinyl alcohol:

[0069] At room temperature, add sodium dodecylbenzenesulfonate, cetyltrimethylammonium bromide, and deionized water to the recovered polyvinyl alcohol, stir evenly, add butyraldehyde and acid solution, cool down, and The temperature is 10°C, the reaction time is 1.5h, and after the reaction, the pH is adjusted to be alkaline to obtain the auxiliary agent;

[0070] S3, the preparation of...

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Abstract

The invention discloses a rare earth metal doped Ti 4 O 7 The preparation method of electrode, step is as follows, S1, with TiO 2 Grind into powder, add polyvinyl alcohol, stir evenly, carry out high-temperature reduction, introduce hydrogen and argon, heat and pressurize, recover polyvinyl alcohol during the reaction, cool down and grind to obtain Ti 4 O 7 Powder; S2, adding sodium dodecylbenzenesulfonate, cetyltrimethylammonium bromide, and deionized water to the recovered polyvinyl alcohol, cooling down, adding butyraldehyde and acid solution, adjusting the pH, and obtaining Auxiliary agent; S3, grinding the rare earth metal salt, adding the obtained Ti 4 O 7 powder and additives, stirring, adding acetone, ultrasonication, heating and stirring, drying and sintering to obtain an electrode. The present invention obtains Ce-doped (Ti 1−x Ce x ) 4 O 7 For the anode, the interfacial charge transfer rate is significantly accelerated, and the OH production is greatly increased, which greatly enhances the electrochemical reaction activity of the electrode, and also has a more stable electrocatalytic activity effect.

Description

technical field [0001] The invention relates to the field of electrochemical technology, in particular to a rare earth metal-doped Ti 4 o 7 Electrode preparation method. Background technique [0002] In recent years, the pollution of perfluorinated compounds has spread all over the world's various ecosystems, seriously exceeding people's expectations, and their existence can even be detected in remote polar regions. This is undoubtedly a huge threat to the earth's organisms. Effective degradation methods for fluorine compounds are urgently needed. Studies have shown that electrochemical oxidation can effectively remove PFCs in complex pollutant water, and is one of the most promising methods for completely mineralizing PFCs in water. Electrochemical oxidation degradation of perfluorinated compounds relies on the generation of hydroxyl radicals (OH) on the surface of the anode, which undergo electron transfer with organic pollutants or directly with pollutants to achieve t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/134C02F1/461C02F1/72C02F101/14
CPCC02F1/46109C02F1/4672C02F1/725C02F2001/46133C02F2305/023C02F2101/14
Inventor 林辉肖润林李威吕斯濠刘倩
Owner DONGGUAN UNIV OF TECH
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