Preparation method, product and application of oxygen-deficient titanium disulfide and carbon nano-disc photocatalytic material

A photocatalytic material, titanium disulfide technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as ecological and environmental damage, achieve easy operation, improve photocatalytic performance, and prepare The effect of simple process

Active Publication Date: 2021-04-06
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of commercial dyes are discharged every year. These dyes are chemically stable and cause great harm to the ecological environment

Method used

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  • Preparation method, product and application of oxygen-deficient titanium disulfide and carbon nano-disc photocatalytic material
  • Preparation method, product and application of oxygen-deficient titanium disulfide and carbon nano-disc photocatalytic material
  • Preparation method, product and application of oxygen-deficient titanium disulfide and carbon nano-disc photocatalytic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An oxygen-deficient titanium disulfide@carbon nanodisc photocatalytic material, prepared according to the following steps:

[0028] Step 1: Add 0.02 mmol tetrabutyl titanate to 10 mL oleylamine, stir it magnetically, and then pass argon gas into it for 30 minutes, gradually heat the solution to 120 °C, and mix the solution thoroughly;

[0029] Step 2: Inject 1 mL of dodecylmercaptan into the above solution, stir magnetically at this temperature for 60 min, then heat to 300 °C, keep the reaction mixture at this temperature for 20 min, and then naturally cool to room temperature ;

[0030] The third step: drop the solution obtained in the second step into liquid pentane, centrifuge the precipitate, and dry the obtained product in a vacuum oven at 60°C to obtain titanium disulfide@C nanodisk;

[0031] Step 4: Put pure titanium disulfide@C nanodisks in a hydrogen atmosphere, and calcinate them at 350 °C for 2 h at a heating and cooling rate of 1 ℃ / min to obtain oxygen-defi...

Embodiment 2

[0034] An oxygen-deficient titanium disulfide@carbon nanodisc photocatalytic material, prepared according to the following steps:

[0035] Step 1: Add 0.04 mmol of tetrabutyl titanate to 15 mL of oleylamine, stir it magnetically, then pass argon into it for 30 min, and gradually heat the solution to 150 °C to make the solution fully mixed;

[0036] Step 2: Inject 2 mL of lauryl mercaptan into the above solution, stir magnetically at this temperature for 30 min, then heat to 280 °C, keep the reaction mixture at this temperature for 30 min, and then naturally cool to room temperature;

[0037] The third step: drop the solution obtained in the second step into liquid tert-butane, centrifuge the precipitate, and dry the obtained product in a vacuum oven at 80°C to obtain titanium disulfide@C nanodisk;

[0038] Step 4: Put pure titanium disulfide@C nanodisks in a hydrogen atmosphere, and calcinate them at 450 °C for 1 h at a heating and cooling rate of 1 °C / min to obtain oxygen-def...

Embodiment 3

[0041] An oxygen-deficient titanium disulfide@carbon nanodisc photocatalytic material, prepared according to the following steps:

[0042] Step 1: Add 0.04 mmol of isopropyl titanate to 15 mL of oleylamine, stir it magnetically, then blow nitrogen into it for 30 min, gradually heat the solution to 150 °C, and mix the solution thoroughly;

[0043] Step 2: Inject 2 mL of 1-docosylmercaptan into the above solution, stir magnetically at this temperature for 30 min, and then heat to 300 °C. The reaction mixture is kept at this temperature for 20 min, and then naturally cooled to room temperature;

[0044] The third step: drop the solution obtained in the second step into liquid tert-butane, centrifuge the precipitate, and dry the obtained product in a vacuum oven at 80°C to obtain titanium disulfide@C nanodisk;

[0045] Step 4: Put pure titanium disulfide@C nanodisks in a hydrogen atmosphere, and calcinate them at 450 °C for 1 h at a heating and cooling rate of 2 ℃ / min to obtain o...

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Abstract

The invention provides a preparation method of an oxygen-deficient titanium disulfide and carbon nano-disc photocatalytic material, and the method comprises the following steps: adding organic titanium salt into oleylamine, stirring, introducing inert gas, and performing heating to sufficiently mix the solution; injecting mercaptan into the solution, performing stirring and heating, keeping the temperature for 20-30 minutes, and performing natural cooling to room temperature; dropwise adding the obtained solution into liquid alkane, and separating and drying precipitates to obtain a titanium disulfide@C nano disc; placing the pure titanium disulfide@C nanodisk in a hydrogen atmosphere, and performing calcining to obtain the oxygen-deficient titanium disulfide@C nanodisk. According to the preparation method of the oxygen-deficient titanium disulfide and carbon nano-disc photocatalytic material, the titanium disulfide and carbon nano-disc photocatalytic material has a large specific surface area, and the oxygen-deficient defects play an important role in improving the photocatalytic performance of the material. The photocatalytic performance of the material is favorably improved. Under the condition of ultraviolet light catalysis, after 60 min, the degradation rate of tetracycline reaches 99.8%. The preparation process is relatively simple and easy to operate.

Description

technical field [0001] The invention relates to a photocatalytic material and its preparation and application, in particular to a preparation method, product and application of an oxygen-deficient titanium disulfide@carbon nanodisk photocatalytic material. Background technique [0002] With the development of chemical industry, environmental pollution is becoming more and more serious. The discharge of printing and dyeing wastewater is one of the important causes of water pollution. A large amount of commercial dyes are discharged every year. These dyes are chemically stable and cause great harm to the ecological environment. Utilizing the characteristic that semiconductor oxide materials can be activated under sunlight irradiation, organic matter can be effectively oxidized and degraded into small molecules such as carbon dioxide and water. Compared with traditional purification methods, semiconductor photocatalysis technology has the advantages of mild reaction condition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J21/18B01J35/10C02F1/32C02F101/30C02F101/34C02F101/38
CPCB01J27/04B01J21/18B01J35/004B01J35/1004C02F1/32C02F2101/30C02F2101/34C02F2101/38C02F2305/10
Inventor 崔大祥吴晓燕林琳
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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