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Photo-anode composite film as well as preparation method and application of photo-anode composite film

A composite film, photoanode technology, applied in nanotechnology, liquid chemical plating, electrolytic coatings, etc. for materials and surface science, can solve the problem of uneven adhesion on the outer surface of nanotubes, low photoelectric conversion efficiency, and inability to adhere and other problems, to achieve the effect of good photogenerated cathodic protection effect, remarkable cathodic protection effect and strong stability.

Active Publication Date: 2019-07-23
BINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in the prior art MoS 2 Modified TiO 2 , mostly MoS 2 Nanosheets attached to TiO 2 Nanowire or TiO 2 nanotube surface, due to MoS 2 It is a cluster of nanosheets with a large volume and cannot be attached to TiO 2 The inner and outer surfaces of nanotubes, and on TiO 2 Nanowire or TiO 2 The outer surface of nanotubes is not uniformly attached, so the existing modified TiO 2 / MoS 2 Composite materials still have a high recombination rate of photogenerated electrons and holes, and the photoelectric conversion efficiency is still not high.

Method used

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  • Photo-anode composite film as well as preparation method and application of photo-anode composite film
  • Photo-anode composite film as well as preparation method and application of photo-anode composite film
  • Photo-anode composite film as well as preparation method and application of photo-anode composite film

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Effect test

Embodiment 1

[0033] The preparation method of photoanode composite film comprises the following steps:

[0034]Take a rectangular pure titanium foil with a thickness of 0.1 mm. The purity of the titanium foil is greater than 99.7%, the length is 1.5 cm, and the width is 1.0 cm. It is ultrasonically cleaned in acetone, absolute ethanol, and deionized water for 30 minutes to obtain a titanium matrix sample.

[0035] Preparation of TiO by anodic oxidation 2 Nanotube array film:

[0036] Prepare an electrolyte solution with ammonium fluoride, glycerol and water, the volume ratio of glycerol to water in the electrolyte solution is 3:2, and the mass fraction of ammonium fluoride is 0.5%; the titanium matrix sample obtained after treatment The anode is used as the anode, and the platinum sheet is used as the cathode. At room temperature, anodize at 20V for 1.0h. After the reaction, the prepared sample is washed with a large amount of deionized water, dried and calcined at 450°C for 120min in a m...

Embodiment 2

[0046] The preparation method of photoanode composite film comprises the following steps:

[0047] Take a rectangular pure titanium foil with a thickness of 0.05mm, the purity of the titanium foil is greater than 99.7%, the length is 1.0cm, and the width is 0.5cm, and it is ultrasonically cleaned in acetone, absolute ethanol, and deionized water for 25 minutes successively to obtain a titanium matrix sample;

[0048] Preparation of TiO by anodic oxidation 2 Nanotube array membrane, ammonium fluoride, glycerol and water were used to prepare the electrolyte, the volume ratio of glycerol to water in the electrolyte solution was 3:1, and the mass fraction of ammonium fluoride was 0.55%. The titanium matrix sample obtained after treatment was used as the anode, and the platinum sheet was used as the cathode. At room temperature, it was anodized at 15V for 0.5h. After the reaction, the prepared sample was washed with a large amount of deionized water, dried and placed in a muffle fu...

Embodiment 3

[0052] The preparation method of photoanode composite film comprises the following steps:

[0053] Take a rectangular pure titanium foil with a thickness of 0.15mm, the purity of the titanium foil is greater than 99.7%, the length is 2.0cm, and the width is 1.5cm, and it is ultrasonically cleaned in acetone, absolute ethanol, and deionized water for 40 minutes successively to obtain a titanium matrix sample;

[0054] Preparation of TiO by anodic oxidation 2 For the nanotube array membrane, ammonium fluoride, glycerol and water are used to prepare an electrolyte solution, the volume ratio of glycerol to water in the electrolyte solution is 3:3, and the mass fraction of ammonium fluoride is 0.45%. The treated titanium matrix sample was used as the anode, and the platinum sheet was used as the cathode. At room temperature, anodize at 25V for 1.5h. After the reaction, the prepared sample was washed with a large amount of deionized water, dried and placed in a muffle furnace. Calc...

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Abstract

The invention discloses a photo-anode composite film as well as a preparation method and application of the photo-anode composite film, and belongs to the technical field of metal corrosion and protection. The photo-anode composite film which is a TiO2 nanotube arrayed composite film with MoS2 nano particles attached to the inner surfaces and the outer surfaces of TiO2 nanotubes. According to thephoto-anode composite film as well as the preparation method and the application of the photo-anode composite film, TiO2 nanotube arrayed film prepared on the surface of a titanium foil through an anodic oxidation method is taken as the basis, a layer of MoS2 nano particles with visible light absorption capacity is deposited on each of the inner surface and the outer surface of each TiO2 nanotubethrough a hydrothermal method, so that the TiO2 / MoS2 nano-composite film is obtained; the photoinduced electron-hole composite probability of the TiO2 / MoS2 nano-composite film is relatively lower, thelight absorption range is expanded, and the photoelectric conversion efficiency is remarkably improved; and the photo-anode composite film has very good photoinduced cathode protection effect on stainless steel.

Description

technical field [0001] The invention relates to the technical field of metal corrosion and protection, in particular to a photoanode composite film, its preparation method and its application. Background technique [0002] Corrosion not only causes a huge loss of several trillion yuan per year to my country's national economy, but also involves major economic and social issues such as personal safety, resource waste, and environmental pollution. Therefore, comprehensive control of corrosion is a difficult and urgent task. [0003] With the rapid development of nanotechnology, people have realized that nanomaterials will have important application prospects in the field of metal corrosion and protection. Nano-metal oxide thin film has the incomparable advantages of metal coating and organic coating due to its high temperature corrosion resistance, oxidation resistance, fatigue resistance and wear resistance, and has been widely used in metal corrosion control and other field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26B82Y30/00B82Y40/00C23C18/12C23F13/12
CPCB82Y30/00B82Y40/00C23C18/1204C23F13/12C25D11/26
Inventor 朱燕峰蒙晓玉
Owner BINZHOU UNIV
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