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Photoanodic film and its preparation method and application

A technology of photoanode and hydrothermal reaction, which is applied in the direction of metal material coating process, coating, liquid chemical plating, etc., can solve the problems of poor metal anti-corrosion effect, improve durability, expand light absorption and utilization efficiency, improve The effect of antiseptic effect

Active Publication Date: 2022-06-03
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a photoanode film, which 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 marine construction projects

Method used

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  • Photoanodic film and its preparation method and application
  • Photoanodic film and its preparation method and application
  • Photoanodic film and its preparation method and application

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preparation example Construction

[0043] The present invention also provides a SrTiO 3 -CoTiO 3 The preparation method of the photoanode film adopts the following technical scheme: comprising the following steps: (1) pretreating the conductive glass; (2) placing the conductive surface of the conductive glass obtained after the pretreatment in step (1) downward. In a mixed solution containing strontium salt, cobalt salt and tetrabutyl titanate, a hydrothermal reaction is carried out to obtain SrTiO deposited on the surface. 3 -CoTiO 3 (3) calcining the product obtained by the treatment in step (2) to obtain the SrTiO 3 -CoTiO 3 Photo-anodized film.

[0044] The present invention also provides SrTiO as described above 3 -CoTiO 3 The application of the photoanode film, which adopts the following technical scheme: the above-mentioned SrTiO 3 -CoTiO 3 Application of photoanodic film in anticorrosion of steel reinforcement in marine construction engineering.

Embodiment 1

[0047] 1. SrTiO of this embodiment 3 -CoTiO 3 The photoanode film is prepared according to the following method, comprising the following steps:

[0048] (1) Pretreatment of conductive glass: Put the FTO conductive glass into a beaker containing detergent-containing aqueous solution, NaOH ethanol solution, ethanol and deionized water in sequence, and ultrasonically clean them for 15 minutes respectively, and clean them (during the hydrothermal reaction) Before, the FTO conductive glass needs to be thoroughly cleaned, the purpose is to improve the adhesion between the film and the glass);

[0049] (2) Add strontium nitrate, cobalt nitrate and tetrabutyl titanate to the water, stir evenly, then add N-polyvinylpyrrolidone (PVP), continue to stir until dissolved, and prepare a solution containing 0.05mmolL -1 Strontium nitrate, 0.05mmolL -1 Cobalt nitrate, 0.1mmolL -1 A mixed solution of tetrabutyl titanate and 10 mmol of N-polyvinylpyrrolidone (PVP), and the above mixed sol...

Embodiment 2

[0058] 1. SrTiO of this embodiment 3 -CoTiO 3 The photoanode film is prepared according to the following method, comprising the following steps:

[0059] (1) Pretreatment of conductive glass: Put the FTO conductive glass into a beaker containing detergent-containing aqueous solution, NaOH ethanol solution, ethanol and deionized water in sequence, and ultrasonically clean it for 15 minutes to clean it;

[0060] (2) Add strontium acetate, cobalt acetate and tetrabutyl titanate to the water, stir evenly, then add sodium dodecyl sulfate, continue to stir until dissolved, and prepare a solution containing 2.0 mmolL -1 Strontium acetate, 2.0mmolL -1 Cobalt acetate, 4mmolL -1 A mixed solution of tetrabutyl titanate and 16 mmol of sodium dodecyl sulfate, and poured the above mixed solution into the reaction kettle; then added the conductive surface of the FTO conductive glass pretreated in step (1) into the above mixed solution In the reaction, after 12h reaction at 150°C, coolin...

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Abstract

The invention belongs to the technical field of marine construction engineering anticorrosion, and in particular relates to a photoanode film and its preparation method and application. The preparation method of the photoanode film of the present invention includes the following steps: (1) pretreating the conductive glass; salt, cobalt salt and tetrabutyl titanate, hydrothermal reaction; (3) calcining the product obtained through step (2) to obtain SrTiO 3 ‑CoTiO 3 Photoanodic film. The SrTiO 3 ‑CoTiO 3 Photoanodic films can be used to improve the durability of marine construction works (concrete structures, etc.).

Description

technical field [0001] The invention belongs to the technical field of marine construction engineering anticorrosion, and particularly relates to a photoanode film and a preparation method and application thereof. Background technique [0002] In the marine atmospheric environment, the relative humidity in the air is high, and seawater and salt spray are highly corrosive to steel. Therefore, how to reduce the impact of corrosion and reduce maintenance costs has become an important issue that must be considered in design and construction. And with the depletion of terrestrial resources, the development of marine resources has attracted widespread attention from all over the world. Therefore, it is urgent to study its related technical fields, especially the prevention and control of marine concrete durability, corrosion resistance, and anti-corrosion, which are all problems that need to be solved urgently. [0003] Cathodic protection technology has been widely used in the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F13/08C23F13/14C23C18/12
CPCC23F13/08C23F13/14C23C18/1216
Inventor 金祖权张小影蒋继宏王晓晴
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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