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Preparation method of sequential black mesoporous titanium dioxide visible light catalyst film

A mesoporous titanium dioxide, titanium dioxide technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of difficult catalyst recovery, ineffective absorption of titanium dioxide, etc., and achieve low cost and photocatalytic efficiency. The effect of improving and increasing the contact area

Inactive Publication Date: 2014-03-05
HEILONGJIANG UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the titanium dioxide prepared by the existing method cannot effectively absorb the visible light in sunlight and the recovery of the surface hydrogenated titanium dioxide (black titanium dioxide) catalyst is difficult, and to provide an ordered black mesoporous titanium dioxide visible light catalyst film. Preparation

Method used

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  • Preparation method of sequential black mesoporous titanium dioxide visible light catalyst film
  • Preparation method of sequential black mesoporous titanium dioxide visible light catalyst film
  • Preparation method of sequential black mesoporous titanium dioxide visible light catalyst film

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specific Embodiment approach 1

[0020] Specific Embodiment 1: In this embodiment, a method for preparing an ordered black mesoporous titanium dioxide visible light catalyst film is realized according to the following steps:

[0021] 1. Impregnation: immerse 10g-25g of porous ceramic membrane in 100mL ordered mesoporous titania sol for 4h-12h to obtain a porous ceramic membrane impregnated with titania sol;

[0022] 2. Drying: drying the porous ceramic membrane impregnated with titanium dioxide sol obtained in step 1 at a temperature of 60°C to 90°C for 12h to 24h to obtain a porous ceramic membrane of titanium dioxide sol;

[0023] 3. Heat treatment: Put the porous ceramic membrane of titanium dioxide sol obtained in step 2 into a roasting furnace, raise the temperature to 400°C-800°C at a heating rate of 1°C / min-20°C / min and keep it for 2h-8h, then take it out and cool To room temperature, obtain the porous ceramic film of the titanium dioxide sol after heat treatment;

[0024] 4. Hydrogenation: put the po...

specific Embodiment approach 2

[0027] Embodiment 2: This embodiment differs from Embodiment 1 in that the porous ceramic membrane described in step 1 is a porous aluminosilicate membrane or a porous silicon dioxide membrane. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the preparation method of the ordered mesoporous titania sol described in step one, is to realize according to the following steps:

[0029] Add 4 mL of concentrated hydrochloric acid dropwise to 5 mL of isopropyl titanate and stir for 2 hours to obtain solution A; dissolve 1.5 g of triblock polymer P123 in 20 mL of absolute ethanol and stir for 1 hour to obtain solution B , Add solution B into solution A, stir for 4 hours, and age for 10 hours to obtain a transparent sol, which is an ordered mesoporous titania sol. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method of a sequential black mesoporous titanium dioxide visible light catalyst film. The invention aims to solve the problems that titanium dioxide prepared by the existing method cannot effectively absorb visible light of sunlight and a surface-hydrogenated titanium dioxide (black titanium dioxide) catalyst is difficult to recover. The preparation method is implemented by the following steps: 1, soaking: soaking a porous ceramic film into titanium dioxide sol; 2, drying: drying at the temperature of 60 to 90 DEG C for 12 to 24 hours to obtain a porous ceramic film of the titanium dioxide sol; 3, performing heat treatment: maintaining the temperature of 400 to 800 DEG C for 2 to 8 hours to obtain the porous ceramic film of the titanium dioxide sol after heat treatment; and 4, hydrogenating: hydrogenating for 2 to 10 hours under the condition of protective gas to obtain the sequential black mesoporous titanium dioxide visible light catalyst film. The preparation method of the sequential black mesoporous titanium dioxide visible light catalyst film is applied to the field of water treatment.

Description

technical field [0001] The invention relates to a preparation method of an ordered black mesoporous titanium dioxide visible light catalyst film. Background technique [0002] Environmental pollution and energy crisis have become the great challenges facing mankind at present! With the depletion of fossil energy, it has become an urgent problem to find new sustainable energy to meet the needs of modern rapid development. The excessive use of fossil energy has brought serious environmental pollution problems, especially the pollution of water and air by organic pollutants, which seriously threatens human health. Therefore, the environment and energy have become the focus of attention. [0003] Semiconductor photocatalysis is a deep oxidation technology, which has unique advantages in the field of sewage treatment, so it has received special attention in recent years. Nanocrystalline titanium dioxide is widely used in the field of photocatalysis (photocatalytic degradation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J21/08B01J21/12C02F1/30
CPCY02W10/37
Inventor 周卫付宏刚邢子鹏张开富胡玮瑶潘凯王蕾
Owner HEILONGJIANG UNIV
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