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Method for preparing core-shell ferroferric oxide/graphene oxide composite nano-catalyst

A technology of ferroferric oxide and nano-catalysts, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve secondary pollution of iron-containing sludge, hydrogen peroxide Utilize the problems of low efficiency and refractory organic matter to achieve excellent degradation effect, easy control of the reaction process, and simple preparation process

Inactive Publication Date: 2016-09-28
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Application Information

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Problems solved by technology

However, the Fenton reaction is difficult to fully degrade organic matter, the reaction pH is low, the utilization efficiency of hydrogen peroxide is low, and it is easy to produce iron-containing sludge to cause secondary pollution

Method used

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  • Method for preparing core-shell ferroferric oxide/graphene oxide composite nano-catalyst
  • Method for preparing core-shell ferroferric oxide/graphene oxide composite nano-catalyst
  • Method for preparing core-shell ferroferric oxide/graphene oxide composite nano-catalyst

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Experimental program
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Effect test

Embodiment 1

[0026] 2.025gFeCl 3 ·6H 2 O was dissolved in 60ml of ethylene glycol solution, and magnetically stirred for 30min; then 10.8g of sodium acetate and 3.0g of polyethylene glycol 4000 were added in sequence, and magnetically stirred for 45min; Dissolve 1.0g of nanometer iron ferric oxide in 100ml of ethylene glycol, when the ultrasonic power is 250W and the ultrasonic frequency is 40000KH z Ultrasonic dispersion for 30min, add 1.0mL of aminopropyltrimethoxysilane, reflux at 80°C for 24h; wash the resulting solution with water first, then wash with ethanol, and then vacuum-dry for 12 hours at a vacuum degree of 0.05Mpa and a temperature of 60°C. Obtain aminated nanometer ferric oxide;

[0027] Mix 2g of graphite, 120ml of concentrated sulfuric acid, and 30ml of concentrated nitric acid mechanically at 0°C for 1.5h, then add 15g of potassium permanganate to the mixture, and stir at room temperature for 96h; after the reaction is complete, add 500ml of distilled water, Stir at 50...

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Abstract

The invention provides a method for preparing a core-shell ferroferric oxide / graphene oxide composite nano-catalyst. The method comprises the following steps of preparing nanometer ferroferric oxide by utilization of a hydrothermal method, preparing graphene oxide by utilization of a modified Hummers method, preparing the core-shell ferroferric oxide / graphene oxide composite nano-catalyst by utilization of an electrostatic self-assembly method. The catalyst prepared according to the method provided by the invention has the advantages that the adsorptive property is excellent, the stability is good, the catalyst can be cyclically utilized, and an excellent adsorption effect can be achieved during the process of degrading simulated dye rhodamine B.

Description

technical field [0001] The invention relates to a preparation method of a core-shell type iron ferric oxide / graphene oxide composite nano catalyst, which belongs to the technical field of preparation of nano composite materials. Background technique [0002] With the acceleration of industrialization and urbanization, the world is facing challenges of water shortage and serious pollution. The textile printing and dyeing industry has a large amount of wastewater, and the national annual output of printing and dyeing wastewater is about 1.6×10 9 t. Dye is the main component in printing and dyeing wastewater, with complex components, and has the characteristics of anti-oxidation, anti-photolysis, high chroma, and high concentration. Moreover, the ratio of BOD / COD is small, the biodegradability is low, and the treatment is very difficult. However, the traditional sewage treatment has low efficiency, high cost, and some even have problems such as secondary pollution, which limit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745C02F1/72C02F101/30
CPCC02F1/722B01J23/745C02F2101/308C02F2305/026C02F2305/023B01J35/396B01J35/50B01J35/40
Inventor 张玲蔡颖濮俊陈静
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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