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a magnetic fe 3 o 4 @c/tio 2 -in 2 o 3 Composite photocatalyst and preparation method and application

A composite light and catalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as excessive band gap, achieve low cost, avoid The effect of secondary pollution and green environmental protection treatment technology

Inactive Publication Date: 2019-08-02
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • a magnetic fe <sub>3</sub> o <sub>4</sub> @c/tio <sub>2</sub> -in <sub>2</sub> o <sub>3</sub> Composite photocatalyst and preparation method and application
  • a magnetic fe <sub>3</sub> o <sub>4</sub> @c/tio <sub>2</sub> -in <sub>2</sub> o <sub>3</sub> Composite photocatalyst and preparation method and application
  • a magnetic fe <sub>3</sub> o <sub>4</sub> @c/tio <sub>2</sub> -in <sub>2</sub> o <sub>3</sub> Composite photocatalyst and preparation method and application

Examples

Experimental program
Comparison scheme
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 present invention provides a magnetic Fe 3 O 4 @C / TiO 2 ‑In 2 O 3 Composite photocatalyst and its preparation method and use. The preparation steps are as follows: add yeast, ferric chloride hexahydrate, sodium acrylate, and sodium acetate to the ethylene glycol / diethylene glycol mixture, ultrasonic treatment, magnetic stirring, and wait until dissolved. After homogenization, transfer to a polytetrafluoroethylene-lined reactor for solvothermal reaction. After the reaction is completed, the solid product is washed and dried to obtain Fe 3 O 4 @C; will Fe 3 O 4 @C is dispersed in absolute ethanol, dispersed by ultrasonic, and then In(NO 3 ) 3 , tetrabutyl titanate and deionized water, magnetically stir evenly to obtain a mixed solution, transfer the mixed solution to a polytetrafluoroethylene-lined reactor for solvothermal reaction; after the reaction is completed, wash the solid product and dry it. Obtain magnetic Fe 3 O 4 @C / TiO 2 –In 2 O 3 Composite photocatalyst. The material prepared by the invention 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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Patent Type & Authority Patents(China)
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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