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Preparation method of two-dimensional nano-flake photocatalyst

A two-dimensional nano, flake light technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc. The effect of improving photocatalytic activity, increasing photocatalytic activity, and broadening the range of photosensitive wavelengths

Inactive Publication Date: 2016-06-08
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The photosensitive wavelength of a single titanium dioxide nanomaterial is generally in the ultraviolet region, and it is not easy to disperse and easily interact with each other to reduce the photocatalytic activity, which is not conducive to practical application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1Mn-TiO 2 / g -C 3 N 4 preparation of

[0015] First, take 0.8mmol manganese salt and add it to 5mL tetrabutyl titanate. During the stirring process, slowly add 0.5mL hydrofluoric acid, and react in the reactor at 160°C for 24 hours. After cooling to room temperature, use ultrapure water and After centrifugal washing with absolute ethanol for three times, vacuum-dry at 50°C; secondly, mix 150mg of the dried solid with 400mg of melamine, and grind it into powder; then, put the ground powder into a muffle furnace with a heating rate of 1°C / min, calcined at 480°C for 5 hours; finally, the calcined powder was cooled to room temperature to obtain Mn-TiO 2 / g -C 3 N 4 ;

[0016] Described manganese salt is manganese sulfate.

Embodiment 2

[0017] Example 2Mn-TiO 2 / g -C 3 N 4 preparation of

[0018] First, take 1.0 mmol of manganese salt and add it to 5 mL of tetrabutyl titanate. During the stirring process, slowly add 0.6 mL of hydrofluoric acid, and react in the reactor at 180 ° C for 21 hours. After cooling to room temperature, use ultrapure water and After centrifugal washing with absolute ethanol for three times, vacuum-dry at 50°C; secondly, mix 200mg of the dried solid with 400mg of melamine, and grind it into powder; then, put the ground powder into a muffle furnace with a heating rate of 2°C / min, calcined at 520°C for 2 hours; finally, the calcined powder was cooled to room temperature to obtain Mn-TiO 2 / g -C 3 N 4 ;

[0019] Described manganese salt is manganese chloride.

Embodiment 3

[0020] Example 3Mn-TiO 2 / g -C 3 N 4 preparation of

[0021] First, take 1.2 mmol of manganese salt and add it to 5 mL of tetrabutyl titanate. During the stirring process, slowly add 0.8 mL of hydrofluoric acid, and react in the reactor at 200 ° C for 18 hours. After cooling to room temperature, use ultrapure water and After centrifugal washing with absolute ethanol for three times, vacuum-dry at 50°C; secondly, mix 250mg of the dried solid with 400mg of melamine, and grind it into powder; then, put the ground powder into a muffle furnace with a heating rate of 3°C / min, calcined at 560°C for 0.5 hours; finally, the calcined powder was cooled to room temperature to obtain Mn-TiO 2 / g -C 3 N 4 ;

[0022] Described manganese salt is manganese nitrate.

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PUM

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Abstract

The invention belongs to the technical field of nano functional materials and green energy and discloses a preparation method of a two-dimensional nano-flake photocatalyst which is not doped with precious metal and is low in cost, simple to prepare and high in photocatalytic activity. The prepared two-dimensional nano-flake photocatalyst is manganese-doped titanium dioxide in-situ composite carbon nitride two-dimensional nanocomposite Mn-TiO2 / g-C3N4 and has good photocatalytic activity.

Description

technical field [0001] The invention relates to a preparation method of a two-dimensional nanosheet photocatalyst. It belongs to the field of new nano functional materials and green energy technology. Background technique [0002] Photocatalyst, also known as photocatalyst, is a substance that does not change itself under the irradiation of light, but can promote chemical reactions. Photocatalyst converts the light energy existing in nature into the energy required for chemical reactions to produce catalysis, so that the surrounding oxygen and water molecules are excited into free negative ions with great oxidative power. It can decompose almost all organic substances and some inorganic substances that are harmful to the human body and the environment. It can not only accelerate the reaction, but also use the definition of nature to avoid waste of resources and additional pollution. There are many materials that can be used as photocatalysts in the world, including titaniu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/10C02F1/30C02F101/38
CPCC02F1/30B01J27/24C02F2305/10C02F2101/38B01J35/60B01J35/39
Inventor 张勇魏琴胡丽华闫良国孙旭
Owner UNIV OF JINAN
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