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Composite photo-anode film and preparation method and application thereof

An anodic film, composite light technology, applied in the direction of coating, can solve the problem of poor photocathode protection effect, and achieve the effect of expanding light absorption and utilization efficiency, realizing absorption and utilization, and improving durability.

Active Publication Date: 2022-02-18
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of composite photoanode film and its preparation method and application, to solve / alleviate C in the prior art 3 N 4 Technical Problems of Poor Effect of Photocathode Protection

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  • Composite photo-anode film and preparation method and application thereof
  • Composite photo-anode film and preparation method and application thereof
  • Composite photo-anode film and preparation method and application thereof

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preparation example Construction

[0036] The present invention aims at current C 3 N 4 For the problem of unsatisfactory protection effect of photocathode protection, a C 3 N 4 -MnMoO 4 The preparation method of the composite photoanode film comprises the following steps: (1) placing the conductive side of the conductive glass in an aqueous solution containing manganese salt and molybdate, and undergoing a hydrothermal reaction to obtain the MnMoO film attached to the surface. 4 film of conductive glass; (2) by pyrolysis method in the MnMoO 4Surface deposition of film C 3 N 4 , that is, the C 3 N 4 -MnMoO 4 Composite photoanode film.

[0037] C of the present invention 3 N 4 -MnMoO 4 The preparation method of composite photoanode film by introducing MnMoO 4 , and put C 3 N 4 deposited on MnMoO 4 The surface of the membrane can expand the efficiency of light absorption and utilization, improve the separation efficiency of photogenerated charges, realize the photocathode protection of concrete re...

Embodiment 1

[0057] 1, the C of this embodiment 3 N 4 -MnMoO 4 The composite photoanode film is prepared according to the following method:

[0058] (1) Put the FTO conductive glass into the aqueous solution containing detergent, acetone, and NaOH ethanol solution for ultrasonic cleaning for 10 minutes, take it out, rinse it with deionized water, and dry it with a hair dryer for use.

[0059] (2) Weigh 4.85g Mn(NO 3 ) 2 and 8.8g (NH 4 ) 6 Mo 7 o 24 4H 2 O, dissolved in 80mL of distilled water, stirred until completely dissolved, then transferred to a 150mL hydrothermal reaction kettle; put the conductive surface of the FTO conductive glass obtained through step (1) down into the hydrothermal reaction kettle, React at 160°C for 8h, cool to room temperature, wash the precipitate three times with deionized water and absolute ethanol, and then dry it in a blower drying oven at 80°C to obtain MnMoO particles attached to the surface. 4 film of conductive glass.

[0060] (3) Attach a p...

Embodiment 2

[0069] 1, the C of this embodiment 3 N 4 -MnMoO 4 The composite photoanode film is prepared according to the following method:

[0070] (1) Put the FTO conductive glass into the aqueous solution containing detergent, acetone, and NaOH ethanol solution for ultrasonic cleaning for 10 minutes, take it out, rinse it with deionized water, and dry it with a hair dryer for use.

[0071] (2) Weigh 4.85g Mn(NO 3 ) 2 and 1.21g Na 2 MoO 4 2H 2 O was dissolved in 20mL dilute nitric acid solution (1molL -1 ) and 10mL of distilled water, then mix and stir the two solutions for 1h, adjust the pH to about 7 with NaOH solution, then fill the lining of the hydrothermal reactor with distilled water to 50%, and the FTO obtained by step (1) Put conductive glass with the conductive side down into the hydrothermal reaction kettle, then put it into the oven, and place it at 180°C for 24 hours; after the reaction kettle is cooled, wash the precipitate with deionized water and absolute ethanol...

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Abstract

The invention belongs to the technical field of corrosion prevention of marine constructional engineering, and particularly relates to a composite photo-anode film and a preparation method and application thereof. The preparation method of the composite photo-anode film comprises the following steps: (1) placing conductive glass with a conductive surface facing downwards in an aqueous solution containing manganese salt and molybdate, and carrying out hydrothermal reaction to obtain conductive glass with a MnMoO4 film attached on the surface; and (2) depositing C3N4 on the surface of the MnMoO4 film through a high-temperature cracking method. The composite photo-anode film disclosed by the invention is beneficial to realizing photoelectric cathode protection of concrete reinforcements of ocean engineering structures, and the durability of the ocean engineering concrete structures is improved.

Description

technical field [0001] The invention belongs to the technical field of marine construction engineering anticorrosion, and in particular relates to a composite photoanode film and its preparation method and application. Background technique [0002] At present, my country's marine construction projects are in an important stage of rapid development, and reinforced concrete structures are the most widely used building material structures. When the scale of my country's oceans is rapidly expanding and the number of harbor projects is increasing, the stability and safety of its construction is also important. It has received more and more attention. Looking at the current construction of seaport facilities in our country, many old structures have been corroded by seawater, which poses a great threat to the safety of facilities. [0003] Cathodic protection technology is an economical and effective protective measure for concrete structures in marine construction projects. It can...

Claims

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Application Information

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IPC IPC(8): C03C17/34C23F13/12C23F13/20
CPCC03C17/3435C23F13/12C23F13/20C23F2201/02C03C2218/111C03C2218/15
Inventor 金祖权张小影蒋继宏王晓晴
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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