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Preparation method for photo-catalysis material with aerogel substrate

A technology of photocatalytic materials and airgel matrix, applied in the field of preparation of photocatalytic materials, can solve the problems of low photocatalytic effect of nanomaterials, and achieve the effects of wide sources, many surface hydroxyl groups, and wide applicability

Inactive Publication Date: 2014-03-19
NORTHEAST FORESTRY UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problem that it is difficult for the existing nano-material loading matrix to bring out the functionality of the embedded nano-material, resulting in a low photocatalytic effect, and provides a photocatalytic material with an airgel matrix. Preparation

Method used

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  • Preparation method for photo-catalysis material with aerogel substrate
  • Preparation method for photo-catalysis material with aerogel substrate
  • Preparation method for photo-catalysis material with aerogel substrate

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specific Embodiment approach 1

[0023] Specific embodiment one: the preparation method of a kind of photocatalytic material with airgel matrix of this specific embodiment is carried out according to the following steps:

[0024] 1. Weighing the photocatalytically active nanomaterial, the ionic liquid, and the cellulose according to the mass ratio of the photocatalytically active nanomaterial, the ionic liquid, and the cellulose (0.01 to 1): 100: (1 to 20);

[0025] 2. Add the photocatalytically active nanomaterials into the ionic liquid at room temperature, and after uniform dispersion, add cellulose, raise the temperature to 65-130°C under stirring and keep it for 0.5-4 hours to obtain a blended solution;

[0026] 3. Pour the blended solution obtained in step 2 into a mold with a temperature of -30°C to 25°C, cool for 0.5h to 20h, and then add it to a regeneration solution with a mass fraction of 10% to 100% for precipitation and regeneration to obtain Composite gel;

[0027] 4. Dry the composite gel obtai...

specific Embodiment approach 2

[0035] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the nano-material with photocatalytic activity described in step one is nano-TiO 2 , sodium titanate or hydrogen titanate, and the others are the same as in Embodiment 1.

specific Embodiment approach 3

[0036] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the nanomaterials with photocatalytic activity used in step 1 are nanotubes, nanowires, nanoflowers, nanosheets, and nanoparticles doped with heteroelements. Or a mixed crystal material, and the others are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a preparation method for a photo-catalysis material with an aerogel substrate and relates to the preparation method for the photo-catalysis material. The preparation method is mainly used for solving the technical problem of low photo-catalysis effect caused by the difficulty in utilizing the functionality of the embedded nanometer material of the present nanometer material loading substrate. The preparation method comprises the following steps: 1) weighting nanometer materials with photo-catalysis activity, ionic liquid and celluloses in proportion; 2) uniformly dispersing the nanometer materials in the ionic liquid, and then adding the celluloses, thereby obtaining blended liquid; 3) pouring the blended liquid obtained in the step 2) into a mould, cooling, and then pouring into a regenerating solution, and depositing and regenerating, thereby obtaining a compound gel; and 4) drying the compound gel prepared in the step 3), thereby obtaining the photo-catalysis material with the aerogel substrate. The photo-catalysis material provided by the invention can be used for catalytically degrading the organic pollutants or harmful strains, such as escherichia coli, and the like.

Description

technical field [0001] The invention relates to a preparation method of a photocatalytic material. Background technique [0002] Research on inorganic nanoparticle / polymer composites is now an active field. Organic-inorganic composites combine the properties of organic and inorganic materials for superior performance. Nanoscale metal and metal oxide (semiconductor) particles, such as gold, titanium dioxide, zinc oxide, and iron oxide, are advanced functional materials because of their unique size physicochemical effects and photoelectric effects. Metal oxide nanoparticles have many applications in photoelectrocatalysis, photocatalysis and biomedicine. In particular, titanium dioxide nanomaterials have attracted more attention due to their potential photoelectric activity, solar energy conversion performance, self-cleaning surface and photocatalytic activity in air purification and water purification. Some organic pollutants, such as ethanol, phenol, organic dyes, and carb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/38C02F1/32A01N59/16A01N25/10A01P1/00
Inventor 李坚卢芸刘一星孙庆丰
Owner NORTHEAST FORESTRY UNIVERSITY
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