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Magnetic Fe3O4@C/TiO2-In2O3 composite photocatalyst, preparation method and application

A composite light and catalyst technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical instrument and method, etc., can solve the problem of excessive band gap and achieve low cost and green Environmental protection treatment technology, the effect of avoiding secondary pollution

Inactive Publication Date: 2017-06-13
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is well known that TiO 2 It is a kind of semiconductor material with excellent photocatalytic performance, and its own advantages such as relatively stable and no secondary pollution have become the focus of current research, but TiO 2 There are also some disadvantages, such as the band gap energy is too large, and the light absorption wavelength range is mainly in the ultraviolet region.

Method used

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  • Magnetic Fe3O4@C/TiO2-In2O3 composite photocatalyst, preparation method and application
  • Magnetic Fe3O4@C/TiO2-In2O3 composite photocatalyst, preparation method and application
  • Magnetic Fe3O4@C/TiO2-In2O3 composite photocatalyst, preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0027] (1) Magnetic Fe 3 o 4 Preparation of @C nanospheres

[0028] a. Weigh 0.1g of yeast, 2.4g of ferric chloride hexahydrate, 3.4g of sodium acrylate, and 3.4g of sodium acetate and dissolve them in a beaker of 22.5mL of ethylene glycol and 22.5mL of diethylene glycol. The mixed solution is sonicated for about 1 hour, and magnetically Stir, after dissolving, transfer the solution to a 100ml Teflon-lined reactor, react at 200°C for 10h, cool to room temperature, wash the product three times with deionized water and absolute ethanol, and put it at 65°C Oven dry. (2) Fe 3 o 4 @C / TiO 2 –In 2 o 3 Preparation of Composite Photocatalyst

[0029] Weigh 0.2g Fe 3 o 4@C was dissolved in a beaker of 40ml absolute ethanol, and the mixed solution was ultrasonically dispersed for about 30min. Secondly, In(NO 3 ) 3 , 0.2 mL tetrabutyl titanate and 0.1 mL deionized water were added to the above solution and stirred magnetically for 10 min. The resulting suspension was transfe...

Embodiment 2

[0031] b. Weigh 0.3g of yeast, 2.4g of ferric chloride hexahydrate, 3.4g of sodium acrylate, and 3.4g of sodium acetate and dissolve them in a beaker of 22.5mL of ethylene glycol and 22.5mL of diethylene glycol. The mixed solution is sonicated for about 1 hour, magnetically Stir, after dissolving, transfer the solution to a 100ml Teflon-lined reactor, react at 200°C for 10h, cool to room temperature, wash the product three times with deionized water and absolute ethanol, and put it at 65°C Oven dry. (2) Fe 3 o 4 @C / TiO 2 –In 2 o 3 Preparation of Composite Photocatalyst

[0032] Weigh 0.2g Fe 3 o 4 @C was dissolved in a beaker of 40ml absolute ethanol, and the mixed solution was ultrasonically dispersed for about 30min. Secondly, In(NO 3 ) 3 , 0.2 mL tetrabutyl titanate and 0.1 mL deionized water were added to the above solution and stirred magnetically for 10 min. The resulting suspension was transferred to a 100ml polytetrafluoroethylene-lined reaction kettle, kept...

Embodiment 3

[0034] c. Weigh 0.5g of yeast, 2.4g of ferric chloride hexahydrate, 3.4g of sodium acrylate, and 3.4g of sodium acetate and dissolve them in a beaker of 22.5mL of ethylene glycol and 22.5mL of diethylene glycol. The mixed solution is sonicated for about 1 hour, and magnetically Stir, after dissolving, transfer the solution to a 100ml Teflon-lined reactor, react at 200°C for 10h, cool to room temperature, wash the product three times with deionized water and absolute ethanol, and put it at 65°C Oven dry. (2) Fe 3 o 4 @C / TiO 2 –In 2 o 3 Preparation of Composite Photocatalyst

[0035] Weigh 0.2g Fe 3 o 4 @C was dissolved in a beaker of 40ml absolute ethanol, and the mixed solution was ultrasonically dispersed for about 30min. Secondly, In(NO 3 ) 3 , 0.2 mL tetrabutyl titanate and 0.1 mL deionized water were added to the above solution and stirred magnetically for 10 min. The resulting suspension was transferred to a 100ml polytetrafluoroethylene-lined reaction kettle, ...

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Abstract

The invention provides a magnetic Fe3O4@C / TiO2-In2O3 composite photocatalyst, a preparation method and an application. The preparation method comprises the following steps: yeast, ferric chloride hexahydrate, sodium acrylate and sodium acetate are added to an ethylene glycol / diethylene glycol mixed solution, the mixture is ultrasonically treated and magnetically stirred, after dissolution and uniform mixing, the mixture is transferred to a reactor equipped with a polytetrafluoroethylene lining for a solvothermal reaction, a solid product is washed and dried after the reaction, and Fe3O4@Cis obtained; Fe3O4@Cis dispersed in absolute ethyl alcohol, ultrasonic dispersion is performed, then In(NO3)3, tetrabutyl titanate and deionized water are added, the materials are magnetically and uniformly stirred, and a mixed solution is obtained and transferred to the reactor equipped with the polytetrafluoroethylene lining for the solvothermal reaction; a solid product is washed and dried after the reaction, and the magnetic Fe3O4@C / TiO2-In2O3 composite photocatalyst is obtained. The prepared material has good photocatalytic degradation effect on tetracycline.

Description

technical field [0001] The invention relates to a magnetic carbon-based material loaded TiO prepared by using yeast as a carbon source 2 -In 2 o 3 Composite photocatalyst, and the prepared magnetic composite photocatalyst was used in the research of photocatalytic degradation of tetracycline in wastewater. The invention belongs to the technical field of environmental material preparation. Background technique [0002] Tetracycline antibiotics are currently the most widely used antibiotics in the world. They have the characteristics of strong persistence, bioaccumulation and biorefractory. cause potential harm. At present, pharmaceutical pollutants left in the environment are affecting organisms in the environment in various ways. [0003] The degradation pathways of tetracycline mainly include hydrolysis, photocatalytic degradation and biodegradation. Among them, photocatalytic degradation technology is the most promising method. It is well known that TiO 2 It is a k...

Claims

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Application Information

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IPC IPC(8): B01J23/825C02F1/30C02F101/38
CPCC02F1/30B01J23/002B01J23/825C02F2101/38B01J2523/00B01J35/33B01J35/39B01J2523/33B01J2523/47B01J2523/842Y02W10/37
Inventor 赵晓旭张梦瀚王嘉慧夏梅逯子扬依成武马长畅闫永胜
Owner JIANGSU UNIV
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