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Z-type cerium sulfide-based cathodic protection photoanode film and its preparation method and application

A cathodic protection, cerium sulfide-based technology, applied in the field of Z-type cerium sulfide-based cathodic protection photoanode film and its preparation, can solve problems such as poor metal anticorrosion effect, and achieve improved durability, improved separation efficiency, and high-efficiency photocathode protection Effect

Active Publication Date: 2022-06-17
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a Z-type cerium sulfide-based cathodic protection photoanode film and its preparation method and application, to solve the problem of photoanode materials used for photocathode protection in the prior art on metals used in marine construction projects The problem of poor anticorrosion effect

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  • Z-type cerium sulfide-based cathodic protection photoanode film and its preparation method and application
  • Z-type cerium sulfide-based cathodic protection photoanode film and its preparation method and application
  • Z-type cerium sulfide-based cathodic protection photoanode film and its preparation method and application

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preparation example Construction

[0034] Aiming at the problem of unsatisfactory protection effect when type II heterojunction is currently used for cathodic protection of steel bars in marine structures, the present invention proposes a Z-type Ce for marine construction engineering metal anticorrosion. 2 O 3 -Ce 2 S 3 The preparation method of the composite photoanode film mainly includes the following steps: (1) pretreating the conductive glass; (2) preparing Ce by hydrothermal method 2 O 3 Photoanode film; (3) Partial vulcanization at high temperature to prepare Ce 2 O 3 -Ce 2 S 3 Composite photoanodic film.

[0035] Ce for marine construction engineering metal anticorrosion of the present invention 2 O 3 -Ce 2 S 3 The preparation of composite photoanode film is formed on the surface of conductive glass by hydrothermal method and high temperature partial vulcanization. The heterojunction is in Z-type electron transport mode, which can significantly improve the redox property of the composite film...

Embodiment 1

[0052] The preparation method of a Z-type cerium sulfide-based cathodic protection photoanode film provided by this embodiment includes the following steps:

[0053] (1) Conductive glass pretreatment: Before the one-step hydrothermal method, the conductive glass needs to be thoroughly cleaned to improve the bonding strength between the photoanodic film and the conductive glass. First, the conductive glass was placed in a beaker containing detergent-containing aqueous solution, NaOH ethanol solution, ethanol and deionized water in sequence, and ultrasonically cleaned for 10 minutes, rinsed with deionized water, and dried at 60°C for use.

[0054] (2) Preparation of Ce by hydrothermal method 2 O 3 : Put 0.01mol / L cerium nitrate into a beaker, add NaOH solution to adjust pH=9.5, stir evenly, put it into the reaction kettle, put the conductive side of the electrode in step (1) into the above solution, control the water The heating temperature is 210°C and the reaction time is 24...

Embodiment 2

[0058] The preparation method of a Z-type cerium sulfide-based cathodic protection photoanode film provided by this embodiment includes the following steps:

[0059] (1) Conductive glass pretreatment: Before the one-step hydrothermal method, the conductive glass needs to be thoroughly cleaned to improve the bonding strength between the photoanode film and the conductive glass. First, the conductive glass was placed in a beaker containing detergent-containing aqueous solution, NaOH ethanol solution, ethanol and deionized water in sequence, and ultrasonically cleaned for 30 minutes, rinsed with deionized water, and dried at 60°C for use.

[0060] (2) Preparation of Ce by hydrothermal method 2 O 3 : Put 1mol / L cerium acetate into a beaker, add potassium hydroxide to adjust pH=7.5, stir evenly, put it into the reaction kettle, put the conductive side of the electrode in step (1) into the above solution, control the water The heating temperature is 130°C and the reaction time is ...

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Abstract

The invention belongs to the technical field of corrosion inhibition of marine engineering concrete structure metal materials, and specifically provides a Z-type cerium sulfide-based cathodic protection photoanode film and its preparation method and application. The preparation method includes the following steps: step 1, pre-conducting the conductive substrate treatment to obtain a clean conductive substrate; step 2, generate Ce on the clean conductive substrate by hydrothermal reaction 2 o 3 Photoanodic film; Step 3, the Ce 2 o 3 The photoanodic film is sulfurized to obtain Ce 2 o 3 -Ce 2 S 3 Composite photoanode film. The composite photoanode film is a new type of Z-shaped heterojunction structure, which can be used as a photoanode film for marine concrete structure reinforcement photoelectric protection, which can realize high-efficiency photocathode protection of marine engineering structures and improve the durability of marine engineering structures.

Description

technical field [0001] The invention belongs to the technical field of corrosion inhibition of marine engineering concrete structural metal materials, and particularly relates to a Z-type cerium sulfide-based cathodic protection photoanode film and a preparation method and application thereof. Background technique [0002] The ocean can not only maintain national security, but also has abundant resources. The effective development and use of marine resources is a problem that every major coastal country must think about and explore. The marine environment is complex and harsh. There are many microorganisms and salts in the seawater, and the sodium chloride contained in the droplets in the seawater will lead to the corrosion of marine engineering structures within 200m of the coast. Therefore, the anti-corrosion treatment of marine engineering structures is very important and critical. [0003] There are many corrosion protection methods, such as coatings, corrosion inhibito...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F13/14C23F13/08
CPCC23F13/14C23F13/08
Inventor 张小影金祖权王晓晴唐恒逄博闫杰蒋浩森陈越华程海洋刘佳豪于偲怡贾小玥
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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