Photocatalytic gel material and preparation method thereof

A gel material and photocatalytic technology, applied in the field of photocatalytic materials, can solve the problems that photocatalytic materials cannot be used, achieve good photochemical stability, short preparation time, and facilitate large-scale industrial production

Inactive Publication Date: 2019-04-16
赵梓俨 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a photocatalytic gel material and its preparation method, aiming to solve the problem that the existing photocatalytic materials cannot be used well in actual scenarios

Method used

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  • Photocatalytic gel material and preparation method thereof
  • Photocatalytic gel material and preparation method thereof
  • Photocatalytic gel material and preparation method thereof

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preparation example Construction

[0032] Photocatalytic gel materials are photocatalytically active materials that can produce a large number of strong oxidants under the excitation of light energy to achieve functions such as cleaning the environment and antibacterial. figure 1 It is a flow chart of the preparation method of the photocatalytic gel material provided by the embodiment of the present invention. Such as figure 1 As shown, the method includes the following steps:

[0033] 110. Dissolving the carbon and nitrogen source precursor in deionized water at a preset water bath temperature to obtain a carbon and nitrogen precursor solution.

[0034] In order to ensure that the carbon and nitrogen source precursor can be fully dissolved in deionized water to form a stable solution, it can be added in a water bath to provide a stable temperature. In some embodiments, the preset temperature of the water bath can be controlled at 30 to 50° C. to ensure that the carbon and nitrogen sources can be fully dissol...

Embodiment 1

[0057] 1) Under the condition of magnetic stirring, 5 mL of copper sulfate solution (concentration of 0.8 mol / L) was quickly added to 10 mL of dicyandiamide (concentration of 0.4 mol / L) to obtain a hydrogel material.

[0058] 2) Put the hydrogel material into a freeze dryer to freeze-dry to obtain the following: image 3 As shown, the airgel material has a certain hardness and is well formed.

[0059] 3) Put the airgel material prepared in step 2) into a polytetrafluoroethylene reactor and seal it, heat at 160°C for 3 hours, and then continue heating at 180°C for 1 hour to obtain a preheated airgel material.

[0060] 4) Calcining the preheated airgel material at 550°C for 4 hours in an argon atmosphere to obtain CuO@g-C3N4 photocatalytic airgel material.

[0061] 5) For CuO@g-C 3 N 4 Photocatalytic airgel material for photocatalytic antibacterial activity test:

[0062] First, the CuO@g-C 3 N 4 After the photocatalytic airgel material was ground into powder, it was added...

Embodiment 2

[0066] 1) Under the condition of magnetic stirring, 5 mL of copper sulfate solution (concentration of 1 mol / L) was quickly added to 10 mL of dicyandiamide (concentration of 0.4 mol / L) to obtain a hydrogel material.

[0067] 2) Putting the hydrogel material into a freeze dryer to freeze-dry to obtain the airgel material.

[0068] 3) Put the airgel material prepared in step 2) into a polytetrafluoroethylene reactor, seal it, and heat it at 160°C for 3 hours, and at 180°C for 1 hour to obtain a preheated airgel material.

[0069] 4) Calcinate the preheated airgel material at 550°C for 4 hours in an argon atmosphere to obtain CuO@g-C 3 N 4 Photocatalytic airgel materials.

[0070] 5) For CuO@g-C 3 N 4 Photocatalytic airgel material for photocatalytic antibacterial activity test:

[0071] First, the CuO@g-C 3 N 4 After the photocatalytic airgel material was ground into powder, it was added to the sample bag of the bacterial culture medium. Then, place the sample bag contain...

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Abstract

The invention relates to the technical field of photocatalytic materials, in particular to a photocatalytic gel material and a preparation method thereof. The method comprises the following steps of obtaining a carbon-nitrogen precursor solution; adding a metal salt solution into the carbon-nitrogen precursor solution to obtain photocatalytic hydrogel; freeze drying the photocatalytic hydrogel toobtain photocatalytic aerogel; adopting a two-step calcination method to obtain a metal@C3N4 photocatalytic gel material and/or a metal compound@C3N4 photocatalytic gel material. The photocatalytic gel material and the preparation method thereof have the advantages that the preparation process is simple, the preparation cost is low, the prepared carbon nitride photocatalytic gel material has goodphotocatalytic performance and chemical stability, can be used as an environment-friendly and antibacterial product and is used in the fields of air purification, sewage treatment, water body antibacterial, cosmetics, medical biological materials such as medical antibiosis, wound protection and the like, soil restoration, water and soil humectant, soilless culture, plant growth and the like, and the gel material can also avoid harms to the environment and play a role in environmental protection.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a photocatalytic gel material and a preparation method thereof. Background technique [0002] With the rapid development of modern industry and the continuous improvement of people's living standards, it has led to increasingly serious energy crisis and environmental pollution problems. Clean energy technology and a healthy living environment have become the focus of attention, and many different types of cleaning and purification technologies have emerged. [0003] Among them, photocatalytic technology based on solar energy has attracted great attention due to its low energy consumption, environmental protection and recyclable characteristics, and is considered to be one of the most effective and promising technologies. [0004] The core of photocatalytic technology lies in photocatalytic materials. Through the continuous efforts of researchers, a large number...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/00
CPCB01J27/24B01J35/0013B01J35/004
Inventor 牟富书
Owner 赵梓俨
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