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A MNSE/tio for photogenerated cathodic protection 2 Composite membrane and its preparation and application

A photo-generated cathodic protection and composite film technology, which is applied in the plating, coating, metal material coating process of superimposed layers, etc., can solve the problem of low photoelectric efficiency, low utilization of thin-film sunlight, and difficulty in maintaining good photo-generated cathodic protection effect. and other problems, to achieve the effects of uniform coating, excellent photocathode protection effect, and good stability effect.

Active Publication Date: 2017-02-01
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the TiO prepared in the past 2 In order to solve the problems of low utilization rate of sunlight, low photoelectric efficiency and difficulty in maintaining a good photogenerated cathodic protection effect in the dark state, a MnSe / TiO film for photogenerated cathodic protection is provided. 2 Composite membrane and its preparation and application

Method used

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  • A MNSE/tio for photogenerated cathodic protection <sub>2</sub> Composite membrane and its preparation and application
  • A MNSE/tio for photogenerated cathodic protection <sub>2</sub> Composite membrane and its preparation and application
  • A MNSE/tio for photogenerated cathodic protection <sub>2</sub> Composite membrane and its preparation and application

Examples

Experimental program
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Effect test

Embodiment 1

[0044] MnSe / TiO 2 Preparation of composite membrane:

[0045] Take a rectangular pure titanium foil with a thickness of 0.1 mm as a sample, which is 15 mm long and 10 mm wide. Sequentially ultrasonic cleaning in acetone, absolute ethanol and deionized water for 10 min.

[0046] Weigh 0.22g NH 4 F, dissolve in 5mL deionized water, add 50mL ethylene glycol, and mix well. At room temperature, with the cleaned titanium foil as the anode and the foil as the cathode, anodize at 20V for 60min in the above mixed solution. Then the sample was placed in a muffle furnace and calcined at 450 °C for 2 h, and then cooled to room temperature with the furnace, that is, TiO was prepared on the Ti surface. 2 nanotube array film.

[0047] in TiO 2 MnSe nanoparticles were prepared on the surface of the nanotube array film by adding 0.166g SeO 2 Dissolve in 50mL absolute ethanol, add 0.058g NaBH 4 Se as a reducing agent 4+ reduced to Se 2- As the target anion, 0.297g MnCl 2 Dissolved in...

Embodiment 2

[0055] MnSe / TiO 2 Preparation of composite membrane:

[0056] Take a rectangular pure titanium foil with a thickness of 0.1 mm as a sample, which is 15 mm long and 10 mm wide. Sequentially ultrasonic cleaning in acetone, absolute ethanol and deionized water for 10 min.

[0057] Weigh 0.22g NH 4 F, dissolve in 5mL deionized water, add 50mL ethylene glycol, and mix well. At room temperature, with the cleaned titanium foil as the anode and the foil as the cathode, anodize at 20V for 60min in the above mixed solution. Then the sample was placed in a muffle furnace and calcined at 450 °C for 2 h, and then cooled to room temperature with the furnace, that is, TiO was prepared on the Ti surface. 2 nanotube array film.

[0058] in TiO 2 MnSe nanoparticles were prepared on the surface of the nanotube array film by adding 0.166g SeO 2 Dissolve in 50mL absolute ethanol, add 0.058g NaBH 4 Se as a reducing agent 4+ reduced to Se 2- As the target anion, 0.297g MnCl 2 Dissolved in 5...

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Abstract

The invention relates to a composite film photoanode, in particular to a MnSe / TiO2 composite film for photogenerated cathode protection as well as preparation and application thereof. A TiO2 nanotube array film is calcined and loaded on the surface of a titanium substrate; the nanotube array film is alternately immersed in a solution containing Mn<2+> and a solution containing Se<2-> to obtain the MnSe / TiO2 composite film. The TiO2 nanotube array film is prepared on the surface of titanium foil by an anodic oxidation method firstly and then the MnSe / TiO2 composite film is obtained through continuous ion layer adsorption reaction; the composite film used as a photoanode, has an excellent photogenerated cathode protection effect.

Description

technical field [0001] The invention relates to a composite film photoanode, in particular to a MnSe / TiO used for photogenerated cathodic protection 2 Composite membranes and their preparation and applications. Background technique [0002] TiO 2 It is a relatively common photoelectric material with good photocatalysis and photosensitization characteristics. It has become a promising material and is widely used in air purification, wastewater treatment, solar cells, gas sensors and other fields. In addition, its value in metal corrosion control has gradually attracted widespread attention from scholars at home and abroad, especially after Yuan and Tsujikawa proposed the concept of photogenerated cathodic protection, using TiO 2 Cathodic protection of metals by photogenerated electrons in semiconductors, a green and environmentally friendly metal corrosion protection method, has aroused great interest. (Yuan Jiangnan, Shigeo Tsujikawa. Photopotentials of copper coated with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F13/08C23C28/04C25D11/26
Inventor 王秀通张亮李红孙好芬侯保荣
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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