Ferrate compound Z-type heterojunction photo-anode film and preparation method and application thereof

A technology of ferrite and composites, which is applied in the direction of liquid chemical plating, coating, metal material coating technology, etc., can solve the problems of poor metal anti-corrosion effect, and achieve the effect of improving durability and high-efficiency photocathode protection

Active Publication Date: 2022-06-24
QINGDAO TECHNOLOGICAL UNIVERSITY
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Problems solved by technology

[0006] The object of the present invention is to provide a ferrite composite Z-type heterojunction photoanode film and its preparation method and application, to solve or alleviate the photoanode materials used for photocathode protection in the prior art to the marine construction engineering. The problem of poor anti-corrosion effect of the metal used

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  • Ferrate compound Z-type heterojunction photo-anode film and preparation method and application thereof
  • Ferrate compound Z-type heterojunction photo-anode film and preparation method and application thereof
  • Ferrate compound Z-type heterojunction photo-anode film and preparation method and application thereof

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preparation example Construction

[0028] The invention provides a ferrite composite Z-type heterojunction photoanode film in view of the problem that the protection effect provided by the current type II heterojunction photocathode protection photoanode material to the concrete structural steel bar of marine construction engineering is not ideal. The preparation method of ferrite composite Z-type heterojunction photoanode film with better photocathode protection effect: a preparation method of ferrite composite Z-type heterojunction photoanode film, including the following Steps: (1) conductive glass pretreatment; (2) NiFe is prepared on the surface of the conductive glass obtained after the pretreatment in step (1) by a one-step hydrothermal method 2 O 4 -CdFe 2 O 4 layer; (3) by in situ photoreduction method on NiFe 2 O 4 -CdFe 2 O 4 An Au layer is prepared on the surface of the layer to obtain a ferrite composite Z-type heterojunction photoanode film.

[0029] This is because the NiFe in the ferrite ...

Embodiment 1

[0041] 1. The ferrite complex Z-type heterojunction photoanodic film of the present embodiment is prepared according to the following method:

[0042] (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 10 minutes, rinsed with deionized water, and dried at 60°C for use.

[0043] (2) Preparation of NiFe on the surface of conductive glass by one-step hydrothermal method 2 O 4 -CdFe 2 O 4 Layer: prepare a solution containing nickel chloride (final concentration of 1 mmol / L), cadmium chloride (final concentration of 100 mmol / L) and potassium ferrite (final concentration of 202 mmol / L), namely control c(Ni+Cd ): c(Fe)=1:2, sti...

Embodiment 2

[0050]1. The ferrite complex Z-type heterojunction photoanodic film of the present embodiment is prepared according to the following method:

[0051] (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 40°C for use.

[0052] (2) Preparation of NiFe on the surface of conductive glass by one-step hydrothermal method 2 O 4 -CdFe 2 O 4 Layer: Prepare a solution containing nickel acetate (final concentration of 1 mol / L), cadmium acetate (final concentration of 500 mmol / L) and ammonium ferrite (final concentration of 3 mol / L), namely control c(Ni+Cd): c(Fe)=1:2, stir it even...

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Abstract

The invention belongs to the technical field of marine constructional engineering metal corrosion inhibition, and particularly relates to a ferrite compound Z-type heterojunction photo-anode film and a preparation method and application thereof. The preparation method of the ferrite compound Z-type heterojunction photo-anode film comprises the following steps: (1) pretreating conductive glass; (2) preparing a NiFe2O4-CdFe2O4 layer on the surface of the conductive glass through a one-step hydrothermal method; and (3) an Au layer is prepared on the surface of the NiFe2O4-CdFe2O4 layer through an in-situ photo-reduction method, and the ferrite compound Z-type heterojunction photo-anode film is obtained. The ferrite compound Z-type heterojunction photo-anode film is formed on the surface of the conductive glass through a one-step hydrothermal method and an in-situ photo-reduction method, the heterojunction is in a Z-type electron transmission mode, the oxidation-reduction property of the ferrite compound Z-type heterojunction photo-anode film can be remarkably improved, and the separation efficiency of photo-generated charges is improved.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion inhibition in marine construction engineering, and in particular relates to a ferrite composite Z-type heterojunction photoanodic film and a preparation method and application thereof. Background technique [0002] In recent years, corrosion of marine reinforced concrete structures has become the number one killer that causes structural damage and affects structural safety. Impressed current cathodic protection is an effective electrochemical method to control the corrosion of concrete steel bars. However, the concrete impressed current protection system is very complex, especially the maintenance of deep-sea structures is difficult, so it is urgent to develop a new cathodic protection system. [0003] Photocathodic protection technology can realize cathodic protection only by using solar energy. It is some green and environmentally friendly cathodic protection technology, which is worthy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F13/14C23C18/08C23C18/14C03C17/36
CPCC23F13/14C23C18/08C23C18/143C03C17/36C03C17/3607C03C17/3649C03C17/3671C23F2201/02C23F2213/31
Inventor 张小影金祖权王晓晴蒋浩森王鹏刚闫杰陈越华程海洋唐恒刘佳豪于偲怡谷强
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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