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A kind of preparation method of efficient porous composite photocatalytic material

A composite photocatalytic and high-efficiency technology, applied in the field of photocatalysis, can solve the problems of large photocatalytic contact area, large specific surface area, and fast electron-hole recombination speed, and achieve large contact area, large specific surface area, and recyclability strong effect

Active Publication Date: 2021-04-06
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problems in the prior art, the present invention provides a preparation method of high-efficiency porous composite photocatalytic materials, which solves the problem of fast electron-hole recombination speed in existing photocatalysts, and effectively improves the The utilization rate of photocatalyst, and the specific surface area is large, and the photocatalytic contact area is large

Method used

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  • A kind of preparation method of efficient porous composite photocatalytic material
  • A kind of preparation method of efficient porous composite photocatalytic material

Examples

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Effect test

Embodiment 1

[0032]Method for preparing high efficiency porous composite photocatalytic materials, including steps:

[0033]Step 1, mix the electrical stone powder and polyvinylpyrrolidone to form a mixed solid, then anhydrous ethanol is added, and the stiff is formed.

[0034]Step 2, place the viscies into the mold to warm the pressurized reaction for 2 h, and obtain the substrate after removal;

[0035]Step 3, put the substrate into anhydrous ethanol soaked for 10 min, and then dried to obtain a porous substrate;

[0036]Step 4, the zinc acetate and ethylcellulose were added to anhydrous ethanol to be stirred to completely dissolve, and the organic zinc solution was obtained, and then the organic zinc solution was evenly applied to the surface of the porous substrate, dried into the ultraviolet light. 20min to get a primary coating substrate;

[0037]Step 5, spray the titanate n-butyl ethanol solution on the surface of the primary coating substrate, and then put it in a high humidity environment for 10 min, ...

Embodiment 2

[0048]Method for preparing high efficiency porous composite photocatalytic materials, including steps:

[0049]Step 1, mix the electrical stone powder and polyvinylpyrrolidone to form a mixed solid, then anhydrous ethanol is added, and the stiff is formed.

[0050]Step 2, place the viscies into the mold to warm the pressurized reaction for 4 h, after removing the substrate;

[0051]Step 3, put the substrate into anhydrous ethanol for 20 min, and then dry the porous substrate after removal;

[0052]Step 4, the zinc acetate and ethylcellulose were added to anhydrous ethanol to be stirred to completely dissolve, and the organic zinc solution was obtained, and then the organic zinc solution was evenly applied to the surface of the porous substrate, dried into the ultraviolet light. 50min to get a primary coating substrate;

[0053]Step 5, spray the titanate n-butyl ethanol solution on the surface of the primary coating substrate, and then put it in a high humidity environment for 30 min, and then drie...

Embodiment 3

[0064]Method for preparing high efficiency porous composite photocatalytic materials, including steps:

[0065]Step 1, mix the electrical stone powder and polyvinylpyrrolidone to form a mixed solid, then anhydrous ethanol is added, and the stiff is formed.

[0066]Step 2, place the viscies into the mold to warm the pressurized reaction for 3 h, and obtain the substrate after removal;

[0067]Step 3, place the substrate into anhydrous ethanol for 15 min, and then dry after the porous substrate is obtained.

[0068]Step 4, the zinc acetate and ethylcellulose were added to anhydrous ethanol to be stirred to completely dissolve, and the organic zinc solution was obtained, and then the organic zinc solution was evenly applied to the surface of the porous substrate, dried into the ultraviolet light. 40min to get a first-order coating substrate;

[0069]Step 5, spray the titanate n-butyl ethanol solution on the surface of the primary coating substrate, and then put it in a high humidity environment for 2...

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Abstract

The invention belongs to the technical field of photocatalysis, and specifically relates to a preparation method of a highly efficient porous composite photocatalytic material, comprising the following steps: step 1, mixing and stirring tourmaline powder and polyvinylpyrrolidone to form a mixed solid, then adding absolute ethanol, stirring to form Viscous material; step 2, put the viscous material into the mold, heat and pressurize it for 2-4 hours, and obtain the base material after taking it out; step 3, soak the base material in absolute ethanol for 10-20 min, take it out and bake it Dry to obtain a porous substrate; step 4, add zinc acetate and ethyl cellulose to absolute ethanol and stir until completely dissolved to obtain an organic zinc liquid, then evenly coat the organic zinc liquid on the surface of the porous substrate, dry and place Irradiation reaction under ultraviolet light for 20-50 minutes to obtain a first-level coating substrate; step 5, spray n-butyl titanate ethanol solution on the surface of the first-level coating substrate, and then put it in a high-humidity environment for 10-30 minutes of light reaction, After drying, the porous photocatalytic material is obtained.

Description

Technical field[0001]The present invention belongs to the field of photocatalytic technology, and more particularly to a method of preparing a highly efficient porous composite photocatalytic material.Background technique[0002]Titanium dioxide (TiO2Because of its ability to chemically inert, good biological compatibility, strong oxidation capacity and chemical corrosion, low price, in energy conversion, wastewater treatment, environmental purification, sensor, coating, cosmetics, catalyst, filler, etc. Many fields have attracted high concerns from scholars at home and abroad. In particular, as a good-to-use N-type semiconductor material, it is possible to make full use of solar energy, both energy saving and environmentally friendly, and is a nano-functional material that is the most widely used prospect. Although titanium dioxide is a potential photocatalyst, the broadband (anatase is about 3.2 eV, golden red stone is 3.0ev) makes TIO2It can only be excited by ultraviolet light (λ ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/06B01J35/00B01J35/10B01J37/00B01J37/34
CPCB01J23/06B01J37/0018B01J37/345B01J35/60B01J35/39
Inventor 徐海涛
Owner SHAOXING UNIVERSITY
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