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Porous Fe3Co7@C nanosphere and application in catalytic degradation of organic pollutants

A technology of organic pollutants and nanospheres, applied in metal/metal oxide/metal hydroxide catalysts, water pollutants, water/sludge/sewage treatment, etc., can solve cumbersome preparation steps and uneven carbon wrapping of materials , poor dispersion and other problems, to achieve the effect of simple and easy preparation, convenient recycling and reuse, and strong ferromagnetism

Active Publication Date: 2017-06-13
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional preparation method has disadvantages such as cumbersome preparation steps, and the prepared materials have disadvantages such as uneven carbon coating and poor dispersion.

Method used

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  • Porous Fe3Co7@C nanosphere and application in catalytic degradation of organic pollutants
  • Porous Fe3Co7@C nanosphere and application in catalytic degradation of organic pollutants
  • Porous Fe3Co7@C nanosphere and application in catalytic degradation of organic pollutants

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Will Fe 0.5 co 0.5 - Co PBAs nanosphere precursors were calcined at 650 °C in a nitrogen atmosphere for 1 h, and the heating rate was 2 °C / min to prepare porous Fe 3 co 7 @C nanospheres.

Embodiment 2

[0023] Will Fe 0.5 co 0.5 - Co PBAs nanosphere precursors were calcined in a nitrogen atmosphere at 800 °C for 1 h, and the heating rate was 2 °C / min, and porous Fe 3 co 7 @C nanospheres.

Embodiment 3

[0025] Get the Fe that 0.01g embodiment 1 obtains 3 co 7 @C nanospheres were added to 50ml of bisphenol A organic pollutants, followed by 0.01g of PMS. Investigate Fe 3 co 7 @C nanospheres act as Fenton reaction catalysts to activate the activity of PMS to degrade organic pollutants. The reaction conditions are: catalyst concentration 0.1g / L, bisphenol A concentration 20mg / L, PMS concentration 0.2g / L aqueous solution, pH=6.0. It was found that the degradation rate of bisphenol A can reach 99% in 30 minutes.

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Abstract

The invention provides a method for preparing a graphene-coated Fe3Co7 alloy (Fe3Co7@C) porous nanosphere. The Fe3Co7@C porous nanosphere can be prepared by calcining doped Fe-Co Prussian blue analogue (FeyCo1-y-Co PBA) under nitrogen atmosphere. The Fe3Co7@C porous nanosphere has the advantages that the stability of the Fe3Co7@C porous nanosphere is very good, the zero-valent iron and cobalt of the Fe3Co7@C porous nanosphere are very stable when being coated by the graphene, and the Fe3Co7@C porous nanosphere can be preserved for a long time in the air. In addition, the Fe3Co7@C porous nanosphere can be used as a fenton reaction catalyst and a fenton-like reaction catalyst; and by activating PMS, PS or H2O2, an active free radical species is generated to degrade the organic pollutants in sewage.

Description

technical field [0001] The present invention relates to the use of a porous Fe 3 co 7 Preparation method of @C porous nanospheres and their application in the catalytic degradation of organic pollutants in the Fenton reaction. Background technique [0002] In recent years, nanometer zero-valent iron (nZVI) has been widely used in photocatalysis, Fenton reaction, heavy metal adsorption, electrochemistry and other fields. There are also many methods for preparing nZVI, including sodium borohydride reduction, hydrogen reduction, and nitrogen atmosphere roasting. However, the prepared nZVI often has poor stability and is easily oxidized to form an inert oxide film in an air atmosphere. However, most catalytic reactions occur on the surface of the catalyst, and the inert oxide film on the surface of zero-valent iron will greatly reduce its catalytic performance. Therefore, how to prepare nano-ZVI with high stability is still a challenge. [0003] Iron-cobalt alloy nanomateri...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J35/10C02F1/72
CPCC02F1/725B01J23/75C02F2101/345C02F2305/026B01J35/61
Inventor 李旭宁王军虎
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI