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A method for treating organic pollutants using iron manganese oxide-gold nanocatalyst

A technology of organic pollutants and ferromanganese oxides, which is applied in the direction of oxidized water/sewage treatment, metal/metal oxide/metal hydroxide catalysts, water pollutants, etc., can solve the problem of low photo-Fenton catalytic activity and light absorption Low utilization rate, limited wide application and other problems, to achieve high catalytic activity, promote catalytic efficiency, and improve separation efficiency

Active Publication Date: 2021-11-05
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Ferromanganese oxide (MnFe 2 o 4 , MFO) is a good photo-Fenton material, but it is easy to aggregate, low absorption utilization rate of light, low photo-Fenton catalytic activity and other defects, which also limit its application in heterogeneous photo-Fenton Wide range of applications in the field of catalysis

Method used

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  • A method for treating organic pollutants using iron manganese oxide-gold nanocatalyst
  • A method for treating organic pollutants using iron manganese oxide-gold nanocatalyst
  • A method for treating organic pollutants using iron manganese oxide-gold nanocatalyst

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Embodiment 1

[0066] A method utilizing ferromanganese oxide-gold nano-catalyst to treat organic pollutants, specifically adopting ferro-manganese oxide-gold nano-catalyst to treat tetracycline (TC) in water, comprising the following steps:

[0067] Ferromanganese oxide-gold nanocatalyst (MFO-Au (1) , MFO-Au (2) , MFO-Au (3) , MFO-Au (4) , MFO-Au (5) ), each 10 mg, respectively added to 100 mL of TC solution with a concentration of 20 mg / L (the pH value of the solution is 6.0), and stirred under dark conditions (it can be used at a speed of 400 r / min to 600 r / min, such as 500r / min) for 30min to reach the adsorption equilibrium, then add 5mL of 1M H 2 o 2 The solution was subjected to photo-Fenton catalytic oxidation reaction for 90min to complete the degradation of TC.

[0068] In this embodiment, the ferromanganese oxide-gold nanocatalyst (MFO-Au (1) ), including ferromanganese oxide, nano-gold particles and negative valence gold ions, wherein the nano-gold particles and negative va...

Embodiment 2

[0091] Investigation of ferromanganese oxide-gold nanocatalysts (MFO-Au (3) ) Stability when processing organic pollutants, specifically adopting ferromanganese oxide-gold nanocatalyst to process tetracycline (TC) in water, comprising the following steps:

[0092] (1) get the ferromanganese oxide-gold nanocatalyst (MFO-Au) prepared in 10mg embodiment 1 (3) ) into 100mL TC solution with a concentration of 20mg / L (the pH value of the solution is 6.0), and ultrasonically stir under dark conditions (it can be used at a speed of 400r / min to 600r / min, such as 500r / min) After 30 min, reach the adsorption equilibrium, irradiate with visible light, and add 5 mL of 1 M H at the same time. 2 o 2 Solution, after fully mixing, carry out the photo-Fenton oxidation degradation reaction for 90min to complete the treatment of TC.

[0093] (2) After the reaction in step (1) is completed, the solution after the reaction is filtered, and the solid substance (MFO-Au (3) ) was washed with ultra...

Embodiment 3

[0098] A method for treating organic pollutants using ferromanganese oxide-gold nano-catalysts, specifically using ferro-manganese oxide-gold nano-catalysts to treat tetracycline (TC), chlortetracycline (CTC), oxytetracycline ( OTC), including the following steps:

[0099] Get 3 parts of ferromanganese oxide-gold nanocatalyst (MFO-Au) prepared in embodiment 1 (3) ), 10 mg each, respectively added to 100 mL of TC, CTC and OTC solutions with a concentration of 20 mg / L (the pH value of the solution is 6.0), and ultrasonically stirred under dark conditions (at a speed of 400 r / min to 600 r / min (for example, 500r / min) for 30min, after reaching adsorption equilibrium, irradiate with visible light, and add 5mL of H at a concentration of 1M at the same time. 2 o 2 The solution was fully mixed and subjected to photo-Fenton oxidation degradation reaction for 90 minutes to complete the degradation treatment of each tetracycline antibiotic.

[0100] Figure 17 It is ferromanganese oxi...

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Abstract

The invention discloses a method for treating organic pollutants by using iron-manganese oxide-gold nano-catalyst. The method uses iron-manganese oxide-gold nano-catalyst to treat organic pollutants. It includes ferromanganese oxide, nano gold particles and negative valence gold ions, and the nano gold particles and negative valence gold ions are co-deposited on the surface of ferromanganese oxide. Compared with MFO monomer and nano-gold colloidal catalysts, the iron-manganese oxide-gold nano-catalysts used in the present invention have the advantages of good economic benefits, good stability, high catalytic activity, good reusability, and easy recycling. An economical ferrite-gold nanocatalyst that can be widely used can efficiently degrade and remove organic pollutants in the environment, especially can degrade tetracycline antibiotics, and has good application value and application range.

Description

technical field [0001] The invention belongs to the technical field of advanced oxidation, and relates to a method for degrading organic pollutants, in particular to a method for treating organic pollutants by using an iron manganese oxide-gold nanometer catalyst. Background technique [0002] With the continuous development of industrial technology, the pollution of organic pollutants in the environment is becoming more and more serious. For example, the emergence of antibiotics has made an important contribution to the treatment of diseases, but due to the abuse of antibiotics, a large amount of antibiotics have flowed into the environment with sewage, and antibiotic pollution of varying degrees has been detected in many rivers and lakes, which seriously threatens human health. . Take tetracycline (TC), for example, a broad-spectrum antibiotic with the formula C 22 h 24 N 2 o 8 , has inhibitory effect on most Gram-positive and negative bacteria, high concentration has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F1/30B01J23/89B01J37/34B01J37/16B01J37/03C02F101/30
CPCC02F1/725C02F1/722C02F1/30B01J23/8986B01J23/002B01J37/343B01J37/344B01J37/16B01J37/031C02F2101/30C02F2305/10C02F2305/026B01J35/23
Inventor 秦蕾李灿陈志达邓豪叶皓阳谌文静陈文芳符玉葵王志红
Owner HUNAN UNIV