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Photocatalyst module, production method of photocatalyst module and photo catalyst reaction apparatus

A photocatalyst and reaction device technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., and can solve problems such as matrix oxidation and decomposition

Inactive Publication Date: 2002-11-13
MITSUI ENG & SHIPBUILD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when a layer of photocatalyst is formed on the surface of the substrate by a method such as flame spraying to form the exposed surface of the photocatalyst, tiny gaps are formed between the particles of the photocatalyst active ingredient, and ultraviolet light entering the gap causes such things as substrate oxidation and decomposition. The problem

Method used

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  • Photocatalyst module, production method of photocatalyst module and photo catalyst reaction apparatus
  • Photocatalyst module, production method of photocatalyst module and photo catalyst reaction apparatus
  • Photocatalyst module, production method of photocatalyst module and photo catalyst reaction apparatus

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Experimental program
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Effect test

Embodiment 11

[0116] Embodiment 11. Form the protective layer containing lithium silicate The coating containing lithium silicate (coating 2 as shown in table 2) is coated with two roads with roller on the surface of substrate-steel plate, and the amount of each road is 100 to 150g / m 2 , to form a 0.5 to 0.75mm thick protective layer. 2. Formation of photocatalyst layer

[0117] Titanium oxide (titania) particles are sized to about 10 to 60 [mu]m, and polyvinyl alcohol (PVA) is mixed therein as a particle binder.

[0118] The mixture of titanium oxide particles and PVA is sprayed at a high temperature of 10,000 to 20,000°C by plasma air spraying method on the surface of the protective layer containing lithium silicate formed on the surface of the steel plate according to the above step 1, thereby forming a layer of titanium oxide. catalyst layer. The photocatalyst layer thus formed has a thickness of 0.3 to 0.5 mm. In addition, the bonding strength of the photocatalyst layer is 150 to 4...

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Abstract

Disclosed is a photocatalyst module, which includes: a substrate, such as a metal plate; a photocatalyst layer, such as a titanium oxide layer; and a protective layer containing lithium silicate arranged between the substrate and the photocatalyst layer. Wherein the protective layer can effectively withstand the heat when the photocatalyst layer is formed by the flame spraying method and can prevent the oxidation and / or decomposition of the substrate.

Description

technical field [0001] The invention relates to a photocatalyst module, a method for producing the photocatalyst module and a photocatalyst reaction device with the photocatalyst module. More specifically, the present invention relates to a photocatalyst module including a substrate, a photocatalyst, and a protective layer disposed between the substrate and the photocatalyst; a method of producing the photocatalyst module; and a photocatalyst with the photocatalyst module Reactor. In addition, the present invention also relates to a photocatalyst reaction device comprising a water tank, and the photocatalyst is contained in the water tank. Background technique [0002] A photocatalyst is usually formed in the form of a layer on the surface of an object, that is, a substrate, which is used to oxidize or decompose foreign substances adhering to or in contact with the photocatalyst or to remove microorganisms. However, there is a problem in that the photocatalyst reacts with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01J19/12B01J21/06B01J21/16B01J35/00B01J37/02B01J37/34C02F1/30C02F1/32C02F1/72C02F1/78C09D1/02C09D5/00C09D5/02
CPCB01J19/123B01J21/063B01J37/0217B01J37/0225B01J37/0244B01J37/349B01J2219/0877B01J2219/0892C02F1/325C02F1/725C02F1/78C02F2201/3223C02F2201/782C02F2305/10B01J35/39
Inventor 村田逞诠菊地真道樱井和寿阿部一雄
Owner MITSUI ENG & SHIPBUILD CO LTD