Method for preparing two-dimensional magnetic photocatalyst

A photocatalytic and magnetic technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of reducing photocatalytic activity, unfavorable practical application, and not easy to disperse, so as to improve photocatalytic activity, increasing photocatalytic activity, and widening the range of photosensitive wavelengths

Inactive Publication Date: 2016-06-01
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 1Co-MoO 3 / TiO 2 g-C 3 N 4 preparation of

[0015] First, add 0.6mmol sodium molybdate and 0.8mmol cobalt salt into 5mL tetrabutyl titanate, slowly add 0.5mL hydrofluoric acid during stirring, react in the reactor at 160°C for 24 hours, and cool to room temperature , after centrifuging and washing three times with ultrapure water and absolute ethanol, vacuum-dry at 50°C; secondly, take 150 mg of the dried solid and mix it with 400 mg of melamine, and grind it into powder; then, put the ground powder into a muffle furnace , the heating rate was 1°C / min, and calcined at 480°C for 5 hours; finally, the calcined powder was cooled to room temperature to obtain Co-MoO 3 / TiO 2 g-C 3 N 4 ;

[0016] The cobalt salt is cobalt sulfate.

Embodiment 2

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

[0018] First, add 0.8mmol sodium molybdate and 1.0mmol cobalt salt to 5mL tetrabutyl titanate, slowly add 0.65mL hydrofluoric acid during stirring, react in the reactor at 180°C for 21 hours, and cool to room temperature , washed with ultrapure water and absolute ethanol for three times, then vacuum-dried at 50°C; secondly, take 200mg of the dried solid and mix it with 400mg of melamine, and grind it into powder; then, put the ground powder into a muffle furnace , the heating rate is 2°C / min, and calcined at 520°C for 2 hours; finally, the calcined powder is cooled to room temperature to obtain Co-MoO 3 / TiO 2 g-C 3 N 4 ;

[0019] Described cobalt salt is cobalt chloride.

Embodiment 3

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

[0021] First, add 1.0mmol sodium molybdate and 1.2mmol cobalt salt into 5mL tetrabutyl titanate, slowly add 0.8mL hydrofluoric acid during stirring, react in the reactor at 200°C for 18 hours, and cool to room temperature , after centrifuging and washing with ultrapure water and absolute ethanol three times, vacuum drying at 50°C; secondly, take 250 mg of the dried solid and mix it with 400 mg of melamine, and grind it into powder; then, put the ground powder into a muffle furnace , the heating rate was 3°C / min, and calcined at 560°C for 0.5 hours; finally, the calcined powder was cooled to room temperature to obtain Co-MoO 3 / TiO 2 g-C 3 N 4 ;

[0022] The cobalt salt is cobalt nitrate.

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PUM

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Abstract

The invention discloses a method for preparing a photocatalyst free of precious metal doping, low in cost, easy to prepare and high in photocatalytic activity and belongs to the technical field of novel nanometer functional materials and green energy.The molybdenum oxide / titanium dioxide composite nanometer photocatalyst prepared from the method is carbon nitride on-situ synthesis cobalt doping molybdenum oxide / titanium dioxide nanosheet two-dimensional nanocomposite Co-MoO3 / TiO2@g-C3N4, and has good photocatalytic activity.

Description

technical field [0001] The invention relates to a preparation method of a two-dimensional magnetic 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 titanium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/02
CPCB01J27/24B01J35/0033B01J35/004B01J35/02
Inventor 张勇马洪敏杜斌胡丽华庞雪辉
Owner UNIV OF JINAN
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