Preparation method and application of magnetic heterogeneous photo-Fenton NiFe2O4/ZnO composite nano material

A composite nanomaterial, magnetic technology, applied in chemical instruments and methods, light water/sewage treatment, water/sludge/sewage treatment, etc. , to achieve the effect of good reusability, short time-consuming and high processing efficiency

Inactive Publication Date: 2017-08-04
CHANGZHOU UNIV HUAIDE COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are still difficulties in solid-liquid separation and recovery of photocatalysts (especially nano-photocatalysts) during use, which seriously hinders the practical application of photocatalytic technology.

Method used

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  • Preparation method and application of magnetic heterogeneous photo-Fenton NiFe2O4/ZnO composite nano material
  • Preparation method and application of magnetic heterogeneous photo-Fenton NiFe2O4/ZnO composite nano material
  • Preparation method and application of magnetic heterogeneous photo-Fenton NiFe2O4/ZnO composite nano material

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Embodiment 1

[0025] A Magnetic Out-of-Phase Photo-Fenton NiFe 2 o 4 The preparation method of / ZnO composite nano material, it comprises the following steps:

[0026] Ⅰ)NiFe 2 o 4 Preparation of:

[0027] (1) Weigh nickel chloride hexahydrate and ferric chloride hexahydrate respectively according to the molar ratio of iron and nickel being 2:1, dissolve them in deionized water, and ultrasonically treat them for 60 minutes, and stir them magnetically for 30 minutes;

[0028] (2) Heating the mixed solution to 90° C. for 3 hours, adding dropwise sodium hydroxide solution to the mixed solution to adjust the pH value to 13;

[0029] (3) Transfer the heated solution to a polytetrafluoroethylene-lined stainless steel autoclave, put the autoclave into a muffle furnace, heat it up to 600°C in a sealed manner with a temperature increase of 3°C per minute, and keep it warm for 3h;

[0030] (4) The powder solid obtained after heating is separated in a magnetic field, and then the magnetic powder i...

Embodiment 2

[0039] Ⅰ)NiFe 2 o 4 Preparation of:

[0040] (1) Weigh nickel chloride hexahydrate and ferric chloride hexahydrate respectively according to the molar ratio of iron and nickel being 2:1.5, dissolve them in deionized water, and ultrasonically treat them for 60 minutes, and magnetically stir for 30 minutes;

[0041] (2) Heating the mixed solution to 80° C. for 3.5 hours, adding sodium hydroxide solution dropwise to the mixed solution to adjust the pH value to 14;

[0042] (3) Transfer the heated solution to a polytetrafluoroethylene-lined stainless steel autoclave, put the autoclave into a muffle furnace, heat up to 800°C in a sealed manner with a temperature rise of 3°C per minute, and keep it warm for 2.5h;

[0043] (4) The powder solid obtained after heating is separated in a magnetic field, and then the magnetic powder is washed and dried to obtain a magnetic heterogeneous photo-Fenton catalyst NiFe 2 o 4 ;

[0044] Ⅱ)NiFe 2 o 4 / ZnO magnetic composite preparation:

...

Embodiment 3

[0050] Ⅰ)NiFe 2 o 4 Preparation of:

[0051] (1) Weigh nickel chloride hexahydrate and ferric chloride hexahydrate respectively according to the molar ratio of iron and nickel being 2:1, dissolve them in deionized water, and ultrasonically treat them for 60 minutes, and stir them magnetically for 30 minutes;

[0052] (2) Heating the mixed solution to 100° C. for 2.5 hours, adding sodium hydroxide solution dropwise to the mixed solution to adjust the pH value to 10;

[0053] (3) Transfer the heated solution to a polytetrafluoroethylene-lined stainless steel autoclave, put the autoclave into a muffle furnace, heat up to 700°C in a closed manner with a temperature increase of 3°C per minute, and keep it warm for 3h;

[0054] (4) The powder solid obtained after heating is separated in a magnetic field, and then the magnetic powder is washed and dried to obtain a magnetic heterogeneous photo-Fenton catalyst NiFe 2 o 4 ;

[0055] Ⅱ)NiFe 2 o 4 / ZnO magnetic composite preparati...

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Abstract

The invention belongs to the technical field of catalysts and particularly relates to a preparation method of a magnetic heterogeneous photo-Fenton NiFe2O4 / ZnO composite nano material. The preparation method using nickel chloride hexahydrate, ferric trichloride hexahydrate, zinc acetate dihydrate, ethylene glycol monomethyl ether, ethanolamine, sodium hydroxide and deionized water as the raw materials includes: preparing the nickel chloride hexahydrate and the ferric trichloride hexahydrate into a mixed solution, and performing heating, separation, washing and drying on the mixed solution to obtain magnetic heterogeneous photo-Fenton NiFe2O4; dissolving the zinc acetate dihydrate into the ethylene glycol monomethyl ether while stirring to obtain a mixed solution, adding NiFe2O4 solid powder into the mixed solution, adding the ethanolamine and a dispersing agent while stirring, heating, separating, washing, and drying to obtain the magnetic heterogeneous photo-Fenton NiFe2O4 / ZnO composite nano semiconductor material. The material can achieve effective and fast absorption-photocatalysis to remove organic dye in water, can be recycled through magnets and is simple to prepare and reusable.

Description

technical field [0001] The invention belongs to the technical field of catalysts, in particular to a magnetic heterogeneous optical Fenton NiFe 2 o 4 / ZnO composite nanomaterial preparation method and application of the material. Background technique [0002] At present, the output of various dyes in my country has reached 900,000 tons, and dye wastewater has become one of the key sources of environmental pollution. The dye industry has a variety of varieties and complex processes, and its wastewater contains a large amount of organic matter, which has COD Cr High, deep color, strong acidity and alkalinity, etc., have always been a difficult problem in wastewater treatment. Therefore, the development of new water treatment materials and new processes, and the control of toxic organic pollutants have become one of the key issues to be solved in the environmental field. After decades of research found that using ZnO and TiO 2 Semiconductors can undergo photocatalysis to d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J20/06B01J20/28C02F1/28C02F1/30C02F101/30
CPCB01J20/06B01J20/28007B01J20/28009B01J20/28059B01J23/002B01J23/80B01J35/0033B01J35/004B01J35/023B01J35/1014B01J2523/00C02F1/281C02F1/30C02F2101/308C02F2305/026C02F2305/10B01J2523/27B01J2523/847B01J2523/842Y02W10/37
Inventor 黄正逸何祖明唐斌江兴方伊聪王鑫竺
Owner CHANGZHOU UNIV HUAIDE COLLEGE
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