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Preparation method of two-dimensional and three-dimensional carrier reinforced carbon nitride photocatalytic material

A catalytic material and three-dimensional technology, applied in the field of photocatalysis, can solve the problems of affecting the photocatalytic effect of photocatalysts, low photocatalytic activity, difficulty in wide application, and reduced photocatalytic efficiency. Effect

Active Publication Date: 2017-04-26
NANJING TECH UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with TiO 2 The representative traditional photocatalytic materials can only use ultraviolet light, and the proportion of ultraviolet light in sunlight and indoor lighting is low, so its low photocatalytic activity is difficult to be widely used.
In addition, TiO 2 It contains expensive titanium metal, which greatly increases the cost. The price of a ton of P25 titanium dioxide is around 400,000
The pore structure of the cement itself and the hydration process of the cement will all affect the photocatalytic effect of the photocatalyst. The longer the age, the exposed photocatalyst will be surrounded by the hydration slurry again; and the CaCO generated by carbonization 3 It also reduces the photocatalytic efficiency

Method used

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  • Preparation method of two-dimensional and three-dimensional carrier reinforced carbon nitride photocatalytic material
  • Preparation method of two-dimensional and three-dimensional carrier reinforced carbon nitride photocatalytic material
  • Preparation method of two-dimensional and three-dimensional carrier reinforced carbon nitride photocatalytic material

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Embodiment 1

[0027] Embodiment 1 discloses a kind of preparation method of two-dimensional, three-dimensional carrier enhanced carbon nitride photocatalytic material, principle is as follows figure 1 shown, including the following steps:

[0028] S1: Disperse 5g of mica powder in 200mL of ethanol, the mass percentage of mica powder is 3%, stir and disperse for 1h, after fully swelling, put it into a cell crusher, ultrasonic at 400W for 4h, and then go through centrifugal drying, use ultrasonic The cavitation effect will peel mica powder into two-dimensional flake mica;

[0029] S2: Put 10 g of glass microspheres into a ball mill and mill at 300 rpm for half an hour. The obtained three-dimensional glass powder is passed through 600 mesh and 800 mesh sieves to obtain three-dimensional glass powder with a particle size between 600 and 800 mesh;

[0030] S3: Weigh 0.6g of two-dimensional flaky mica, 0.4g of three-dimensional glass powder and 20g of urea into 20mL of deionized water to obtain ...

Embodiment 2

[0035] Embodiment 2 discloses a method for preparing a two-dimensional, three-dimensional carrier-enhanced carbon nitride photocatalytic material, comprising the following steps:

[0036] Disperse 2g of mica powder in 200mL of deionized water. The mass percentage of mica powder is 1%. Stir and disperse for 2 hours. The mica powder is exfoliated into two-dimensional flake mica by chemical reaction;

[0037] S2: Put 10 g of glass microspheres into a ball mill and mill at 300 rpm for half an hour. The obtained three-dimensional glass powder is passed through 600 mesh and 800 mesh sieves to obtain three-dimensional glass powder with a particle size between 600 and 800 mesh;

[0038] S3: Weigh 0.2g of two-dimensional flaky mica, 0.2g of three-dimensional glass powder and 20g of melamine into 20mL of deionized water to obtain a mixture. The mass percentages of each component in the mixture in the total mixture are: two-dimensional sheet 1% mica, 1% three-dimensional glass powder, 9...

Embodiment 3

[0041] Embodiment 3 discloses a method for preparing a two-dimensional, three-dimensional carrier-enhanced carbon nitride photocatalytic material, comprising the following steps:

[0042] Disperse 20g of mica powder in 200mL of deionized water. The mass percentage of mica powder is 10%. Stir and disperse for 3 hours. The function is to peel off the mica powder into two-dimensional flake mica;

[0043] S2: Put 10 g of glass microspheres into a ball mill and mill at 300 rpm for half an hour. The obtained three-dimensional glass powder is passed through 600 mesh and 800 mesh sieves to obtain three-dimensional glass powder with a particle size between 600 and 800 mesh;

[0044] S3: Weigh 6.6g of two-dimensional flaky mica, 6.6g of three-dimensional glass powder and 20g of dicyandiamide into 20mL of deionized water to obtain a mixture. The mass percentages of each component in the mixture in the total mixture are: 2 Dimensional flaky mica 20%, three-dimensional glass powder 20%, ure...

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Abstract

The invention discloses a preparation method of a two-dimensional and three-dimensional carrier reinforced carbon nitride photocatalytic material. The preparation method comprises the steps that stripped two-dimensional sheet mica and three-dimensional glass powder serve as the carrier, amino compounds serve as raw materials of synthesizing carbon nitride, and a thermal polymerization method is adopted for preparing and obtaining the two-dimensional and three-dimensional carrier reinforced carbon nitride photocatalytic material. The adopted two-dimensional sheet mica is good in chemical stability and resistant to strong acid, strong base and compression; as the carrier of the carbon nitride, the two-dimensional sheet mica is capable of effectively preventing the photocatalytic material from being corroded and embedded by an alkaline cement base, and accordingly, the service life of the carbon nitride can be prolonged; and as a support body of the photocatalytic material, the adopted three-dimensional glass powder can enable the carbon nitride photocatalytic materials to expose more active sites, is good in light transmittance, and can improve the light use ratio of a photocatalyst.

Description

technical field [0001] The invention relates to photocatalytic technology, in particular to a method for preparing a two-dimensional and three-dimensional carrier-enhanced carbon nitride photocatalytic material. Background technique [0002] At present, while the material production of human beings has developed rapidly, the living environment of human beings has been seriously polluted. Among them, air pollution is one of the main forms, including various volatile organic compounds and nitrogen oxides emitted from automobile exhaust, which have brought increasingly serious harm to human health. Eliminating pollution, purifying the environment, and promoting sustainable economic and social development have become the focus and major strategy of all countries in the world. Based on increasingly severe environmental problems, semiconductor photocatalytic self-cleaning technology is one of the most important research hotspots in this century, which can use inexhaustible solar ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/39
Inventor 寇佳慧周强陆春华许仲梓彭枫萍熊吉如袁慧雯
Owner NANJING TECH UNIV
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