Preparation method of high-adsorption supported photocatalyst

A photocatalyst, supported technology, applied in catalyst activation/preparation, molecular sieve catalysts, chemical instruments and methods, etc., to achieve high uniformity, high oil absorption, and strong photocatalytic activity.

Inactive Publication Date: 2015-04-01
姚 燕燕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to overcome the above-mentioned technical defects, the problem to be solved in the present invention is: how to highly disperse the photocatalytic nanopowder, so that the photocatalyst is suspended with ultrafine nanoparticle, and use the photocatalytic nanosuspension to prepare high adsorption, high catalytic activity and high Fastness supported photocatalyst

Method used

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  • Preparation method of high-adsorption supported photocatalyst

Examples

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Comparison scheme
Effect test

Embodiment 1

[0034] (1) Weigh nano-titanium dioxide, calcium carbonate, polyvinylpyrrolidone, and epoxy-modified silicone resin respectively, and add them to ethyl acetate to mix and dissolve. Calculated by weight, the mixed solution contains 17.93% nano-titanium dioxide and 0.81% calcium carbonate. Epoxy-modified silicone resin 18.16%, ethyl acetate 61.10%, polyvinylpyrrolidone 2.0%, ultrasonic dispersion for 60 minutes to obtain photocatalytic powder suspension slurry;

[0035] (2) Soak the foam ceramics in the above-mentioned photocatalytic powder suspension slurry, disperse it by ultrasonic waves for 3-5 minutes, and then let it stand for 30 minutes;

[0036] (3) Take out the foam ceramics in the photocatalytic powder suspension slurry, and after the slurry in the pores of the foam ceramics has been dripped clean, place it at 100°C to form a film and dry it for 2 hours;

[0037] (4) The dried foam ceramics were sintered at a high temperature of 450°C for 4 hours, and cooled naturally t...

Embodiment 2

[0039] (1) Weigh nano-tungsten trioxide, calcium carbonate, sodium lauryl sulfate, and epoxy resin respectively, add polyethylene glycol to mix and dissolve, and calculate by weight, tungsten trioxide in the mixed solution 15.6% , calcium carbonate 1.0% , the epoxy resin is 20% , polyethylene glycol 61.40% , sodium lauryl sulfate 2.0%, ultrasonic dispersion for 90 minutes to obtain photocatalytic powder suspension slurry;

[0040] (2) Soak the foam ceramics in the above-mentioned photocatalytic powder suspension slurry, disperse it by ultrasonic wave for 3-5 minutes, and let it stand for 60 minutes;

[0041] (3) Take out the ceramic foam in the photocatalytic powder suspension slurry, and place it at 80°C to form a film and dry it for 2 hours;

[0042] (4) The dried foam ceramics were sintered at a high temperature of 800°C for 2 hours, and cooled naturally to obtain a high-adsorption-loaded photocatalyst.

Embodiment 3

[0044](1) Weigh nano-titanium dioxide, calcium carbonate, sodium polyacrylate, and epoxy-modified silicone resin respectively, add ethyl acetate to mix and dissolve, and calculate by weight, nano-titanium dioxide in the mixed solution 10.0%， calcium carbonate 1.0% , epoxy modified silicone resin 25.0% , ethyl acetate 62.0% , polyvinylpyrrolidone 2.0%, ultrasonic dispersion for more than 30 minutes to obtain photocatalytic powder suspension slurry;

[0045] (2) Soak the nickel metal foam in the above-mentioned photocatalytic powder suspension slurry, disperse it by ultrasonic wave for 3-5 minutes, and let it stand for 30 minutes;

[0046] (3) Take out the nickel metal foam in the photocatalytic powder suspension slurry, and after the slurry in the pore diameter of the nickel metal foam is dripped clean, place it at 120°C to form a film and dry it for 2 hours;

[0047] (4) The dried nickel metal foam was sintered at a high temperature of 200° C. for 8 hours, and cooled natura...

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Abstract

The invention discloses a preparation method of a high-adsorption supported photocatalyst. The method comprises the following steps: 1, respectively weighing a photocatalyst raw material, a curing agent, a film forming agent and a dispersant, adding the raw material, the curing agent, the film forming agent and the dispersant into a film forming assistant, mixing and dissolving, and carrying out ultrasonic dispersion to obtain a photocatalysis powder suspension liquid; 2, immersing a supporting carrier in the photocatalysis powder suspension liquid, carrying out ultrasonic dispersion, and standing; 3, carrying out film forming drying on the supporting carrier obtained in step 2 at 80-120DEG C; and 4, sintering the film forming dried supporting carrier at 200-800DEG C for 2-8h, and naturally cooling the supporting carrier to obtain the high-adsorption supported photocatalyst. The high-adsorption supported photocatalyst prepared in the invention has the advantages of uniform dispersion, good photocatalytic activity, extremely good adhesiveness and super strong adsorption effect.

Description

technical field [0001] The invention relates to the field of photocatalysts, in particular to a method for preparing a high-adsorption loaded photocatalyst. Background technique [0002] Photocatalyst is currently one of the most eye-catching advanced oxidation environmental protection materials. At present, photocatalysts exist in the form of powder or liquid sol prepared by sol-gel method. When these two forms of photocatalysts are used in water treatment, air purification and sterilization in different fields, there will be problems that solid / liquid, solid / gas, and even solid / solid cannot be separated. For this reason, the immobilization of photocatalysts is considered to be the most effective measure to solve this problem. At present, many studies at home and abroad have discussed the immobilization methods of photocatalysts. Most of them use glass beads, glass plates, optical fibers, porous silica gel and ceramic membranes as carriers. The focus of the research is on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/34B01J37/02B01J23/02B01J23/30B01J23/78B01J29/04B01D53/86C02F1/30
Inventor 姚燕燕
Owner 姚 燕燕
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