Composite titanium dioxide photocatalytic active coating and preparation method thereof

A technology of photocatalytic activity and titanium dioxide, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as inability to realize large-scale application, difficulty in recycling for secondary use, and low photocatalytic activity , to achieve broad market application prospects, reduce usage, and high photocatalytic efficiency

Inactive Publication Date: 2019-11-19
国合通用(青岛)测试评价有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem that the present invention solves is, TiO 2 In practical applications, photocatalytic materials have low photocatalytic activity, are difficult to recycle for secondary use, are prone to secondary pollution, and cannot be used on a large scale.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for preparing a composite titanium dioxide photocatalytic active coating, characterized in that it comprises the following steps:

[0032] (1) Preparation of composite modified TiO 2 powder:

[0033]In parts by volume, weigh 60 parts of butyl titanate, 20 parts of absolute ethanol, and 20 parts of deionized water, and mix them to form A solution;

[0034] In parts by volume, weigh 20 parts of graphene dispersion liquid, 20 parts of graphene oxide dispersion liquid, 20 parts of graphite-like phase carbon nitride dispersion liquid, 20 parts of glacial acetic acid and 20 parts of absolute ethanol, mix and make B solution ;

[0035] According to the weight ratio of A solution and B solution is 1:1, slowly add B solution to A solution, adjust the pH value to 2.0, mix and stir evenly, naturally age for 24h, oven dry at 100°C for 3h, and roast at 300°C , to prepare composite modified TiO 2 powder.

[0036] (2) Preparation of composite TiO 2 Photocatalytically ac...

Embodiment 2

[0047] A method for preparing a composite titanium dioxide photocatalytic active coating, characterized in that it comprises the following steps:

[0048] (1) Preparation of composite modified TiO 2 powder:

[0049] In parts by volume, weigh 60 parts of butyl titanate and 40 parts of absolute ethanol respectively, and mix them to form A solution;

[0050] In parts by volume, weigh 20 parts of graphene dispersion, 20 parts of graphene oxide dispersion, 20 parts of graphite-like carbon nitride dispersion, 20 parts of glacial acetic acid, 10 parts of absolute ethanol, and 10 parts of deionized water , mixed to form B solution;

[0051] According to the weight ratio of solution A and solution B is 2:1, slowly add solution B to solution A, adjust the pH value to 2.0, mix and stir evenly, then naturally age for 24h, oven dry at 100°C for 3h, and roast at 300°C , to prepare composite modified TiO 2 powder.

[0052] (2) Preparation of composite TiO 2 Photocatalytically active em...

Embodiment 3

[0063] A method for preparing a composite titanium dioxide photocatalytic active coating, characterized in that it comprises the following steps:

[0064] (1) Preparation of composite modified TiO 2 powder:

[0065] In parts by volume, weigh 60 parts of butyl titanate and 40 parts of absolute ethanol respectively, and mix them to form A solution;

[0066] In parts by volume, weigh 20 parts of graphene dispersion liquid, 20 parts of graphene oxide dispersion liquid, 20 parts of graphite-like phase carbon nitride dispersion liquid, 20 parts of glacial acetic acid and 20 parts of absolute ethanol, mix and make B solution ;

[0067] According to the weight ratio of A solution and B solution is 2.5:1, slowly add B solution to A solution, adjust the pH value to 2.0, mix and stir evenly, naturally age for 24h, oven dry at 100°C for 3h, and roast at 300°C , to prepare composite modified TiO 2 powder.

[0068] (2) Preparation of composite TiO 2 Photocatalytically active emulsion:...

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PUM

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Abstract

The invention relates to the technical field of photocatalytic coatings, particularly to a composite titanium dioxide photocatalytic active coating and a preparation method thereof. The preparation method comprises the following three steps: (1) preparing composite modified Ti02 powder; (2) preparing a composite Ti02 photocatalytic active emulsion; and (3) preparing an active coating. According tothe present invention, the prepared photocatalytic active coating has characteristics of high photocatalytic efficiency and wide photoresponse range, and can effectively solve the problems of difficult recovery, low photocatalytic efficiency, easy agglomeration and easy secondary pollution generation during photocatalytic reaction, and the like of the Ti02 powder catalyst; and the prepared titanium dioxide photocatalytic active coating can be reused so as to reduce the catalyst consumption, and further has broad market application prospects.

Description

technical field [0001] The invention relates to the technical field of photocatalytic coatings, in particular to a composite titanium dioxide photocatalytic active coating and a preparation method thereof. Background technique [0002] Because industrial wastewater has the characteristics of complex components, high concentration of pollutants, and difficult treatment, it will cause serious harm to the environment. Therefore, the harmless treatment of industrial wastewater has always been a research hotspot and difficulty in the field of environmental protection. Conventional water treatment technologies, such as physical adsorption, activated sludge, and biodegradation, have limited effects on industrial waste. The treatment of industrial wastewater mostly focuses on the research of advanced oxidation technologies such as ozone oxidation, electrochemical oxidation and photocatalytic oxidation. According to the current research status, TiO 2 Composite photocatalytic materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J21/06B01J35/10C02F1/30C02F101/38
CPCB01J27/24B01J21/063B01J35/004B01J35/1004C02F1/30C02F2101/40C02F2305/10
Inventor 王巍刘婷张晓辰谢景洋
Owner 国合通用(青岛)测试评价有限公司
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