Porous adsorption supported light-catalyzed reaction film and preparation method and application thereof

A photocatalytic reaction and porous adsorption technology, applied in the field of photocatalysis, can solve the problems of long photocatalytic reaction film preparation cycle, poor adsorption and degradation performance, and low photocatalytic efficiency, and achieve good reusability, good adhesion, The effect of enhancing light utilization efficiency

Inactive Publication Date: 2018-09-28
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention solves the problem of long photocatalytic reaction membrane preparation period in the prior art, and the TiO 2 The photocatalytic efficiency is not high, the adsorption degradation performance is not good, and the catalyst is easy to agglomerate and difficult to recycle.

Method used

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  • Porous adsorption supported light-catalyzed reaction film and preparation method and application thereof
  • Porous adsorption supported light-catalyzed reaction film and preparation method and application thereof
  • Porous adsorption supported light-catalyzed reaction film and preparation method and application thereof

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Embodiment 1

[0035] The invention provides a method for preparing a porous adsorption-loaded photocatalytic reaction film, figure 1 It is a flowchart of a preparation method of a porous adsorption-loaded photocatalytic reaction membrane, comprising the following steps:

[0036] (1) Prepare 1.5g of PDMS mixed solution with PDMS solution and curing agent according to the ratio of 10:1, and mix evenly to obtain the mixed solution; weigh 4.5g of citric acid and 1.5g of the above mixed solution and pour it into a 5mm high vessel , stir and mix evenly to obtain a solid-liquid mixed material;

[0037] (2) Place the solid-liquid mixed material obtained above horizontally in a vacuum hood and evacuate for 1 hour. The vacuum condition is greater than -0.1Mpa to remove small closed-cell bubbles. Manually flatten the surface and put it in an oven at 70°C. Bake for 1-1.5h;

[0038] (3) After taking out the dried solid mixture, put it in water, squeeze it for about 5 minutes, and after the citric acid...

Embodiment 2

[0042] The invention provides a method for preparing a porous adsorption-loaded photocatalytic reaction membrane, comprising the following steps:

[0043] (1) Prepare 1.5g of PDMS mixed solution with PDMS solution and curing agent according to the ratio of 10:1, and mix evenly to obtain the mixed solution; weigh 3g of citric acid and 1.5g of the above mixed solution and pour it into a 5mm high vessel , stirring and mixing evenly to obtain a solid-liquid mixed material;

[0044] (2) Place the solid-liquid mixture material obtained above horizontally in a vacuum hood to evacuate for 1 hour, remove the small closed-cell bubbles, manually flatten the surface, and bake in an oven at 70°C for 1-1.5 hours;

[0045] (3) Take out the dried solid mixture, put it in water, squeeze it by hand for about 5 minutes, and after the citric acid is completely dissolved, put it in an oven at 110°C and bake it repeatedly for 1-2 hours until it is dried to obtain porous PDMS base material;

[004...

Embodiment 3

[0049] The invention provides a method for preparing a porous adsorption-loaded photocatalytic reaction membrane, comprising the following steps:

[0050] (1) Prepare 1.5g of PDMS mixed solution with PDMS solution and curing agent according to the ratio of 10:1, and mix evenly to obtain the mixed solution; weigh 4.5g of citric acid and 1.5g of the above mixed solution and pour it into a 5mm high vessel , stir and mix evenly to obtain a solid-liquid mixed material;

[0051] (2) Place the solid-liquid mixture material obtained above horizontally in a vacuum hood to evacuate for 1 hour, remove the small closed-cell bubbles, manually flatten the surface, and bake in an oven at 70°C for 1-1.5 hours;

[0052] (3) Take out the dried solid mixture, put it in water, squeeze it by hand for about 5 minutes, and after the citric acid is completely dissolved, put it in an oven at 110°C and bake it repeatedly for 1-2 hours until it is dried to obtain porous PDMS base material;

[0053] (4...

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Abstract

The invention discloses a porous adsorption supported light-catalyzed reaction film and a preparation method and application thereof. The preparation method comprises the following steps: after mixinga polydimethylsiloxane prepolymer with a curing agent, adding pore-forming particles for curing, and then removing the pore-forming particles to obtain a porous polydimethylsiloxane substrate material; after uniformly mixing a binder and nanometer titanium dioxide to obtain a photocatalyst mixed solution; pouring the photocatalyst mixed solution onto the porous polydimethylsiloxane substrate material, and heating to remove a solvent for dissolving the binder, thereby obtaining the porous adsorption supported light-catalyzed reaction film. The light-catalyzed reaction film prepared in the invention has the effects of large specific surface area, good adsorption performance, high catalytic efficiency, stable performance, easy recycling and the like. When the light-catalyzed reaction film isapplied to degrading organic matters, killing bacteria and adsorbing inorganic ions, the bacteria can be killed efficiently, and the organic matters or inorganic ions can be adsorbed and degraded.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, and more specifically relates to a porous adsorption-supported photocatalytic reaction membrane, a preparation method and application thereof. Background technique [0002] In recent years, water pollution incidents have occurred frequently in various places, water safety cannot be guaranteed, people's health has been seriously threatened, and the situation of water pollution control is grim. Conventional water treatment processes are ineffective in treating organic wastewater with complex components and poor biochemical properties, which seriously affects the safety of water quality. [0003] Relatively simple and green and energy-saving photocatalytic oxidation technology can directly mineralize organic pollutants into carbon dioxide and water or degrade them into easily biodegradable small molecule products, reducing the harm to the environment, and has good removal efficiency and appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38B01J35/06B01J37/02A01N59/16A01P1/00C02F1/30C02F101/34C02F101/36C02F101/38
CPCA01N59/16B01J31/38B01J35/0013B01J35/004B01J35/065B01J37/0234C02F1/30C02F2101/308C02F2101/34C02F2101/36C02F2101/38C02F2305/10
Inventor 侯慧杰赵文金韩仪刘萍蔡伽仪王杰张剑皓姚诗诗胡敬平刘冰川王晓璇陈沁杨家宽
Owner HUAZHONG UNIV OF SCI & TECH
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