tio 2 /wo 3 Preparation method of nanocomposite film

A nanocomposite, titanium foil technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of low photoelectric conversion efficiency, inability to provide continuous cathode current for metals, photogenerated electrons and holes recombination It can solve the problem of high efficiency and achieve good photoelectric effect and energy storage performance, good photogenerated cathodic protection effect, and remarkable cathodic protection effect.

Active Publication Date: 2021-05-11
BINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) TiO 2 The film can only absorb ultraviolet light with a wavelength less than 387nm, which only accounts for 4-5% of sunlight, has no absorption for visible light, and cannot fully utilize solar energy
[0005] (2) TiO 2 The recombination rate of photogenerated electrons and holes in semiconductors is high, and the photoelectric conversion efficiency is low
[0006] (3) When changing from light to dark state, there is no electron migration, and continuous cathodic current cannot be provided to the protected metal, and cathodic protection is difficult to maintain

Method used

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  • tio <sub>2</sub> /wo <sub>3</sub> Preparation method of nanocomposite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take a rectangular pure titanium foil with a thickness of 0.1mm, the purity of the titanium foil is greater than 99.7%, the length is 1.5cm, and the width is 1.0cm, and it is successively ultrasonically cleaned in acetone, absolute ethanol and deionized water for 30 minutes to obtain a titanium matrix sample;

[0026] Preparation of TiO by anodic oxidation 2 Nanotube array membrane, using ammonium fluoride, glycerol and water to prepare the first electrolyte solution, the volume ratio of glycerol to water in the first electrolyte solution is 3:2, and the titanium matrix sample obtained after treatment is used as the anode , the platinum sheet is used as the cathode, at room temperature, anodized 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 muffle furnace;

[0027] Using constant potential deposition technology, the surface is covered with TiO 2 The titanium matrix ...

Embodiment 2

[0032] 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 successively ultrasonically cleaned in acetone, absolute ethanol and deionized water for 25 minutes to obtain a titanium matrix sample;

[0033] Preparation of TiO by anodic oxidation 2 Nanotube array membrane, using ammonium fluoride, glycerol and water to prepare the first electrolyte solution, the volume ratio of glycerol to water in the first electrolyte solution is 3:1, and the titanium substrate sample obtained after treatment is used as the anode , the platinum sheet is used as the cathode, at room temperature, anodized at 15V for 0.5h, after the reaction, the prepared sample is washed with a large amount of deionized water, dried and calcined at 420°C for 100min in a muffle furnace;

[0034] Using constant potential deposition technology, the surface is covered with TiO 2 The titanium mat...

Embodiment 3

[0037] 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 successively ultrasonically cleaned in acetone, absolute ethanol and deionized water for 40 minutes to obtain a titanium matrix sample;

[0038] Preparation of TiO by anodic oxidation 2 Nanotube array membrane, using ammonium fluoride, glycerol and water to prepare the first electrolyte solution, the volume ratio of glycerol to water in the first electrolyte solution is 3:3, and the titanium matrix sample obtained after treatment is used as the anode , the platinum sheet is used as the cathode, at room temperature, anodized at 25V for 1.5h, after the reaction, the prepared sample is washed with a large amount of deionized water, dried and calcined at 470°C for 150min in a muffle furnace;

[0039] Using constant potential deposition technology, the surface is covered with TiO 2 The titanium matrix...

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Abstract

The invention provides a TiO 2 / WO 3 The preparation method of the nanocomposite membrane comprises: ultrasonically cleaning the titanium foil to obtain a titanium matrix sample; preparing a first electrolyte solution with ammonium fluoride, glycerol and water; using the titanium matrix sample as an anode and a platinum sheet as a cathode, In the first electrolyte solution, the anodic oxidation reaction is carried out; after the anodic oxidation reaction is completed, the sample prepared on the anode is cleaned with deionized water, dried and calcined in a muffle furnace, and TiO is prepared on the surface of the titanium matrix sample. 2 Nanotube array film; covered with TiO 2 The titanium matrix sample of the nanotube array film is used as the cathode, the platinum sheet is used as the anode, and TiO is prepared by constant potential deposition. 2 / WO 3 nanocomposite film. Through the technical scheme of the present invention, the prepared TiO 2 / WO 3 The nanocomposite film has good photoelectric effect and energy storage performance, and shows good photogenerated cathodic protection effect on metals, especially stainless steel, under both light and dark states.

Description

technical field [0001] The invention relates to the technical field of metal corrosion and protection, in particular to a TiO 2 / WO 3 Preparation method of nanocomposite film. Background technique [0002] Metal corrosion has caused a huge loss of trillions of yuan to my country's national economy every year, accounting for about 3.34% of the gross domestic product (GDP) of the year, and it also involves major economic and social issues such as personal safety, resource waste, and environmental pollution. . So far, a large number of anti-corrosion technologies have been widely used, playing a huge role in the construction of the national economy. Cathodic protection is a kind of electrochemical protection technology. Its principle is to apply current or add an anode to the protected metal through external means to make it a cathode and be protected. But traditional cathodic protection needs to sacrifice anode or consume electric energy. [0003] For anti-corrosion, photo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26C25D9/08C23F13/12B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00C23F13/12C25D9/08C25D11/26
Inventor 朱燕峰
Owner BINZHOU UNIV
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