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Photocatalyst thin film, method for forming photocatalyst thin film, and photocatalyst thin film coated product

A technology of photocatalytic thin films and products, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., and can solve problems such as poor wear resistance, low adhesion of glass and coating films, etc.

Inactive Publication Date: 2009-12-16
CENTRAL JAPAN RAILWAY COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, the room temperature curing method has the following problems: the adhesion between the glass and the coating film is not high, the abrasion resistance of the film is poor, and it can only be used in parts where there is basically no physical contact (such as window glass of high-rise buildings). in the use of

Method used

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  • Photocatalyst thin film, method for forming photocatalyst thin film, and photocatalyst thin film coated product
  • Photocatalyst thin film, method for forming photocatalyst thin film, and photocatalyst thin film coated product
  • Photocatalyst thin film, method for forming photocatalyst thin film, and photocatalyst thin film coated product

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Embodiment

[0053] The present invention will be described based on examples.

[0054] (a) Preparation of coating solution

[0055] Mix catechol in an appropriate amount of toluene, add ethoxylated niobium (V) (Niobium (V) ethoxide) dropwise to the resulting mixed solution, and make the moles of ethoxylated niobium (V) and catechol The ratio is 2:5. The total amount of solvent was adjusted so that the concentration of niobium (V) ethoxide was 0.5M.

[0056] Half of the solution was distilled off. During distillation, it was confirmed that the vapor temperature reached 100° C., and the volatile components of the mixed solution remaining after distillation were evaporated under reduced pressure using a rotary evaporator. The remaining solid components were then heated to 100° C. under vacuum using a vacuum dryer to completely remove the remaining volatile components. Drying was continued until a solid content (niobium catechol) was obtained in an amount close to the theoretical value (a...

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Abstract

Disclosed is a method for forming a photocatalytic film, wherein a photocatalytic film containing niobium-alkali metal complex oxide is formed by forming and then firing a layer containing niobia nanosheet on a surface of a base containing alkali metal.

Description

technical field [0001] The invention relates to a photocatalytic film with self-purification function and a product with the photocatalytic film. Background technique [0002] Photocatalysts have the function of photocatalysis that decomposes substances by irradiating ultraviolet rays, and light-induced superhydrophilization that makes the surface easily affinity with water by light, and photocatalyst self-cleaning products utilizing these two functions have been widely used It is used in building exterior wall materials and glass and other exterior decoration building materials. [0003] That is, photocatalyst self-cleaning products can use the ultraviolet light contained in sunlight to decompose dirt. In addition, since it can use the superhydrophilicity of its surface to float dirt and be washed away during rainfall, it can Maintains a permanently clean appearance (self-cleaning function). [0004] However, self-cleaning glass coated with photocatalysts has several prob...

Claims

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Application Information

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IPC IPC(8): B01J35/02B01J23/20B01J37/08
CPCC03C2217/218C03C21/001B01J37/0215C03C17/25C03C2217/228C03C2218/111C03C2217/23B01J23/20C03C2217/71B01J35/004B01J35/39B01J37/08B01J35/00B82Y30/00
Inventor 克里斯托弗·科多尼尔志知哲也胜又健一胜又靖博藤岛昭
Owner CENTRAL JAPAN RAILWAY COMPANY