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Photo-Fenton catalyst Fe3O4/rGO/TiO2, preparation method and applications thereof

A catalyst and Guangfen technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem that catalysts are not easy to recycle, have small specific surface area, and low degradation efficiency and other problems, to achieve the effect of improving Fenton's catalytic performance, high catalytic performance, and simple preparation process

Inactive Publication Date: 2016-12-21
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the above methods use binary photocatalysts, which have problems such as small specific surface area, low degradation efficiency, and difficult recovery of catalysts.

Method used

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  • Photo-Fenton catalyst Fe3O4/rGO/TiO2, preparation method and applications thereof
  • Photo-Fenton catalyst Fe3O4/rGO/TiO2, preparation method and applications thereof
  • Photo-Fenton catalyst Fe3O4/rGO/TiO2, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Dissolve 0.5g of nanometer iron ferric oxide in 50ml of isopropanol, ultrasonically disperse for 30 minutes to obtain solution A, then add 0.5ml of aminopropyltrimethoxysilane to obtain solution B, and heat solution B to reflux at 80°C 24h. The reaction product was washed with absolute ethanol and distilled water, and then vacuum-dried at 60°C to obtain aminated nano-ferric oxide;

[0033] (2) Add the aminated nanometer iron ferric oxide prepared by 0.1g step (1) into 100mL isopropanol, and ultrasonically disperse to obtain solution C; Graphene oxide is added to water for ultrasonic dispersion, and the concentration of 150mL graphene oxide is obtained as 0.5g / L solution D; then add C dropwise to D under the condition of mechanical stirring, stir and react for 3h, the reaction product is washed with absolute ethanol and distilled water, and then vacuum-dried at 60°C to obtain Fe 3 o 4 / GO composites;

[0034] (3) Fe prepared by 30mg step (2) 3 o 4The / GO composi...

Embodiment 2

[0037] (1) Dissolve 0.75g of nanometer iron ferric oxide in 50ml of isopropanol, and disperse it ultrasonically for 30 minutes to obtain solution A, then add 0.5ml of aminopropyltrimethoxysilane to obtain solution B, which is heated to reflux at 80°C 20h. The reaction product was washed with absolute ethanol and distilled water, and then vacuum-dried at 60°C to obtain aminated nano-ferric oxide;

[0038] (2) Add the aminated nano-ferric oxide ferric oxide prepared by 0.15g step (1) into 100mL isopropanol, and ultrasonically disperse to obtain solution C; Graphene oxide is added to water for ultrasonic dispersion, and the concentration of 150mL graphene oxide is obtained as 0.5g / L solution D; then add C dropwise to D under the condition of mechanical stirring, stir the reaction for 2h, wash the reaction product with absolute ethanol and distilled water, and then dry it in vacuum at 80°C to obtain Fe 3 o 4 / GO composites;

[0039] (3) Fe prepared by 30mg step (2) 3 o 4 The ...

Embodiment 3

[0042] (1) Dissolve 0.5g of nanometer iron ferric oxide in 50ml of isopropanol, ultrasonically disperse for 30 minutes to obtain solution A, then add 0.5ml of aminopropyltrimethoxysilane to obtain solution B, and heat solution B to reflux at 80°C 24h. The reaction product was washed with absolute ethanol and distilled water, and then vacuum-dried at 60°C to obtain aminated nano-ferric oxide;

[0043] (2) Add the aminated nanometer iron ferric oxide prepared by 0.1g step (1) into 100mL isopropanol, and ultrasonically disperse to obtain solution C; Graphene oxide is added to water for ultrasonic dispersion, and the concentration of 100mL graphene oxide is obtained as 1.0g / L solution D; then add C dropwise to D under mechanical stirring conditions, stir for 3h, the reaction product is washed with absolute ethanol and distilled water, and then vacuum-dried at 70°C to obtain Fe 3 o 4 / GO composites;

[0044] (3) Fe prepared by 30mg step (2) 3 o 4 The / GO composite material was...

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Abstract

The invention belongs to the technical field of catalysis materials, and discloses a photo-Fenton catalyst Fe3O4 / rGO / TiO2, a preparation method and applications thereof. The preparation method comprises: adding aminated nanometer triiron tetraoxide to isopropanol, carrying out ultrasonic dispersing, adding a graphene oxide aqueous solution in a dropwise manner, carrying out a reaction for 2-3 h under a mechanical stirring condition to obtain a Fe3O4 / GO composite material, dispersing the Fe3O4 / GO composite material in isopropanol, adding tetrabutyl titanate in a dropwise manner under a stirring condition, carrying out a reaction for 30-60 min, adding distilled water, uniformly stirring and mixing, and carrying out a hydrothermal reaction on the obtained mixed solution at a temperature of 180-200 DEG C to obtain the photo-Fenton catalyst Fe3O4 / rGO / TiO2. According to the present invention, the obtained photo-Fenton catalyst Fe3O4 / rGO / TiO2 has advantages of high catalysis performance, stable structure, no pollution of the degradation product, and has good application prospects in treatment of antibiotic wastewater.

Description

technical field [0001] The invention belongs to the technical field of catalytic materials, in particular to a photo-Fenton catalyst Fe 3 o 4 / rGO / TiO 2 And its preparation method and application. Background technique [0002] At present, my country has more than 300 antibiotic production enterprises, accounting for about 30% of the world's total output, with an annual output of about 210,000 tons of antibiotic raw materials and an annual discharge of antibiotic wastewater of more than 50 million tons. Antibiotic wastewater has high chroma, contains various refractory and biotoxic substances, and is a kind of high-concentration organic wastewater. Antibiotic residues in wastewater have potential impacts on the environment. Antibiotic wastewater treatment methods mainly include physical, chemical and biological methods. Although these methods have their own unique characteristics, due to the complex composition of antibiotic wastewater and the large amount of toxic subst...

Claims

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Application Information

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IPC IPC(8): B01J23/745C02F1/30C02F1/72C02F101/36
CPCC02F1/30C02F1/722C02F1/725B01J23/745C02F2101/36C02F2305/026C02F2305/10B01J35/39
Inventor 肖凯军王文霞银玉容朱良
Owner SOUTH CHINA UNIV OF TECH
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