A kind of photoanode material, sol-gel combustion preparation method and application

A photoanode, sol technology, applied in chemical instruments and methods, cobalt compounds, inorganic chemistry, etc., can solve problems such as poor metal anticorrosion effect, achieve good cathodic protection effect, improve durability, and high-efficiency photocathode protection effect.

Active Publication Date: 2022-05-20
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The object of the present invention is to provide a kind of photoanode material, sol-gel combustion preparation method and application, can effectively solve or alleviate the photoanode material used for photocathode protection in the prior art to the metal used in deep sea engineering The problem of poor anticorrosion effect

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  • A kind of photoanode material, sol-gel combustion preparation method and application
  • A kind of photoanode material, sol-gel combustion preparation method and application
  • A kind of photoanode material, sol-gel combustion preparation method and application

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Embodiment 1

[0042] 1. The photoanode material of the present embodiment is prepared according to the following method:

[0043] (1) Prepare 100mmol / L cobalt nitrate, and then slowly add an appropriate amount of citric acid, adjust the pH of the solution to 2.5, and stir for 4h.

[0044] (2) To step (1) the resulting mixed solution was successively added butyl titanate (final concentration of 80mmol / L) and ammonium molybdate (final concentration of 20mmol / L), constant temperature 60 °C stirred for 10h.

[0045] (3) The mixed solution obtained in step (2) is dried at 140 °C to make a dry gel precursor.

[0046] (4) The dry gel precursor obtained in step (3) was roasted at 450 °C for 12h, removed, and ground evenly, that is, the photoanodic material CoMoO of the present embodiment was obtained 4 -CoTiO 3 。

[0047] 2. Under simulated sunlight irradiation, the potentiometric polarization curve (with SCE as the reference electrode, scanning speed of 5mV / S) is judged by testing the photoanode m...

Embodiment 2

[0050] 1. The photoanode material of the present embodiment is prepared according to the following method:

[0051] (1) Prepare 10mmol / L cobalt nitrate, and then slowly add an appropriate amount of glacial acetic acid, adjust the pH of the solution to 5.5, and stir for 1h.

[0052] (2) To step (1) the resulting mixed solution was added sequentially 1mmol / L butyl titanate and 9mmol / L ammonium molybdate, stirred at a constant temperature of 20 °C for 1h.

[0053] (3) The mixed solution obtained in step (2) is dried at 140 °C to make a dry gel precursor.

[0054] (4) The dry gel precursor obtained in step (3) was roasted at 450 °C for 12h, removed, and ground evenly, that is, the photoanodic material CoMoO of the present embodiment was obtained 4 -CoTiO 3 。

[0055] 2, the Present Embodiment of CoMoO 4 The photoanode material is prepared according to the following method: CoMoO with the above-described photoanode material 4 -CoTiO 3 Compared with the preparation method, only the step...

Embodiment 3

[0060] The photoanode material of the present embodiment is prepared according to the following method:

[0061] (1) Prepare 50mmol / L cobalt nitrate, then slowly add an appropriate amount of citric acid, adjust the pH of the solution to 3.5, and stir for 2h.

[0062] (2) To step (1) the resulting mixed solution was successively added 35mmol / L butyl titanate and 15mmol / L sodium molybdate, constant temperature 40 °C stirred for 1h.

[0063] (3) Place the resulting mixed solution in step (2) at 100 °C to dry and make a dry gel precursor.

[0064] (4) The dry gel precursor obtained in step (3) was roasted at 850 ° C for 6h, removed, and ground evenly, that is, the photoanodode material CoMoO of the present embodiment was obtained 4 -CoTiO 3 。

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Abstract

The invention belongs to the technical field of anti-corrosion technology of marine engineering concrete structure metal materials, and in particular relates to a photoanode material, a sol-gel combustion preparation method and an application thereof. The photoanode material of the present invention is prepared by a sol-gel combustion method, and the photoanode material is CoMoO 4 ‑CoTiO 3 . The photoanode material of the present invention can effectively solve or alleviate the problem that the photoanode material used for photocathode protection in the prior art has poor anticorrosion effect on metals used in deep sea engineering, and can realize efficient photocathode protection of marine engineering structures , to improve the durability of deep sea engineering structures.

Description

Technical field [0001] The present invention belongs to the field of anti-corrosion technology of metal materials of marine engineering concrete structures, specifically relates to a photoanode material, sol - gel combustion preparation method and application. Background [0002] During the "14th Five-Year Plan" period, China's major marine infrastructure and engineering equipment are accelerating to the extremely harsh service environment such as the deep sea, and the service environment of marine platforms is very harsh and prone to deterioration and destruction. For corrosion protection technology in the deep sea environment, cathodic protection technology is usually used. [0003] In recent years, the corrosion phenomenon of marine reinforced concrete structures has become the number one killer of structural damage and structural safety. As an effective electrochemical method for controlling the corrosion of concrete steel reinforcement, the cathodic protection of the applied...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G51/00C01G23/00C23F13/08C23F13/14
CPCY02P20/133
Inventor 张小影唐恒王晓晴金祖权宋立英荆江平程海洋闫杰蒋浩森陈越华张依梦王瑞瑞
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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