Preparing method for binary metal co-doping photocatalyst

A technology of photocatalyst and binary metal, applied in the direction of metal/metal oxide/metal hydroxide catalyst, chemical instrument and method, physical/chemical process catalyst, etc., can solve the problem of reducing photocatalytic activity, unfavorable practical application, easy Interaction and other issues to achieve the effect of improving photocatalytic activity, increasing photocatalytic activity, and broadening 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

[0015] Example 1 FeMn-TiO 2 / g -C 3 N 4 preparation of

[0016] First, take 0.8mmol of iron salt and 0.8mmol of manganese salt and add them to 5mL of tetrabutyl titanate. During stirring, slowly add 0.5mL of hydrofluoric acid, and react in the reactor at 160°C for 24 hours. After cooling to room temperature, After centrifugal washing with ultrapure water and absolute ethanol three times, vacuum-dry at 50°C; secondly, mix 150 mg of the dried solid with 400 mg of melamine, and grind it into powder; then, put the ground powder into a muffle furnace, The heating rate is 1°C / min, and calcined at 480°C for 5 hours; finally, the calcined powder is cooled to room temperature to obtain FeMn-TiO 2 / g -C 3 N 4 ;

[0017] Described iron salt is ferric sulfate;

[0018] Described manganese salt is manganese sulfate.

Embodiment 2

[0019] Example 2FeMn-TiO 2 / g -C 3 N 4 preparation of

[0020] First, take 0.8mmol of iron salt and 1.0mmol of manganese salt and add them to 5mL of tetrabutyl titanate. During stirring, slowly add 0.65mL of hydrofluoric acid, and react in the reactor at 180°C for 21 hours. After cooling to room temperature, After centrifuging and washing three times with ultrapure water and absolute ethanol, vacuum-dry at 50°C; secondly, mix 200 mg of the dried solid with 400 mg 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 FeMn-TiO 2 / g -C 3 N 4 ;

[0021] Described iron salt is ferric chloride;

[0022] Described manganese salt is manganese chloride.

Embodiment 3

[0023] Example 3 FeMn-TiO 2 / g -C 3 N 4 preparation of

[0024] First, take 0.8mmol of iron salt and 1.2mmol of manganese salt and add them to 5mL of tetrabutyl titanate. During stirring, slowly add 0.8mL of hydrofluoric acid, and react in the reactor at 200°C for 18 hours. After cooling to room temperature, After centrifuging and washing with ultrapure water and absolute ethanol three times, vacuum-dry at 50°C; secondly, mix 250 mg of the dried solid with 400 mg of melamine, and grind it into a powder; then, put the ground powder into a muffle furnace, The heating rate is 3°C / min, and calcined at 560°C for 0.5 hours; finally, the calcined powder is cooled to room temperature to obtain FeMn-TiO 2 / g -C 3 N 4 ;

[0025] Described iron salt is ferric nitrate;

[0026] Described manganese salt is manganese nitrate.

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PUM

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Abstract

The invention discloses a preparing method for 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 binary metal co-doping photocatalyst prepared through the method is an iron-manganese co-doping titanium dioxide nanosheet in-situ synthesis carbon nitride two-dimensional nanocomposite FeMn-TiO2/g-C3N4, and has good photocatalytic activity.

Description

technical field [0001] The invention relates to a preparation method of a binary metal co-doped 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 di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J23/889
CPCB01J27/24B01J23/8892B01J35/004
Inventor 张勇杜斌马洪敏吴丹范大伟
Owner UNIV OF JINAN
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