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Preparation method and application of NiFe2O4/Cu2O magnetic composite nanometer catalyst

A magnetic composite nano-catalyst technology, applied in heterogeneous catalyst chemical elements, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of complex process, small specific surface area, large catalyst particles, etc., and achieve simple process. , The effect of high processing efficiency and short time-consuming

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

[0004] Magnetic nanocomposites have been reported in the prior art, but the general preparation process is more complicated, takes a long time, the photocatalytic degradation efficiency is low, the prepared catalyst particles are larger, the specific surface area is smaller, and the photocatalytic degradation efficiency is lower. Some deficiencies such as low, so optimize NiFe 2 o 4 / Cu 2 The preparation method of O magnetic composite nanomaterials has important practical significance for promoting economic development

Method used

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  • Preparation method and application of NiFe2O4/Cu2O magnetic composite nanometer catalyst
  • Preparation method and application of NiFe2O4/Cu2O magnetic composite nanometer catalyst
  • Preparation method and application of NiFe2O4/Cu2O magnetic composite nanometer catalyst

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Embodiment 1

[0027] A NiFe 2 o 4 / Cu 2 The preparation method of O magnetic composite nano-catalyst, it may further comprise the steps:

[0028] Ⅰ)NiFe 2 o 4 Preparation of:

[0029] (1) taking by weighing nickel chloride hexahydrate and ferric chloride hexahydrate respectively as 2:1 by the mol ratio of iron and nickel and being dissolved in deionized water;

[0030] (2) Add sodium hydroxide solution dropwise to the mixed solution to adjust the pH value to 13, and heat the mixed solution to 90° C. for 3 hours;

[0031] (3) Transfer the heated solution to the reactor, and heat the reactor to 700° C. and keep it warm for 3 hours;

[0032] (4) The powder solid obtained after heating is separated in a magnetic field, and then the magnetic powder is washed and dried to obtain black NiFe 2 o 4 Catalyst particles, NiFe 2 o 4 The diameter is 20-30nm;

[0033] Ⅱ)NiFe 2 o 4 / Cu 2 Preparation of O magnetic composites:

[0034] (1) At 35°C, stir and dissolve 3.993g of copper acetate he...

Embodiment 2

[0040] A NiFe 2 o 4 / Cu 2 The preparation method of O magnetic composite nano-catalyst, it may further comprise the steps:

[0041] Ⅰ)NiFe 2 o 4 Preparation of:

[0042] (1) taking by weighing nickel chloride hexahydrate and iron trichloride hexahydrate respectively as 2:1.5 by the mol ratio of iron and nickel and being dissolved in deionized water;

[0043] (2) Add sodium hydroxide solution dropwise to the mixed solution to adjust the pH value to 10, and heat the mixed solution to 80° C. for 3.5 hours;

[0044] (3) Transfer the heated solution to the reactor, heat the reactor to 800°C and keep it warm for 2.5h;

[0045] (4) The powder solid obtained after heating is separated in a magnetic field, and then the magnetic powder is washed and dried to obtain black NiFe 2 o 4 Catalyst particles, NiFe 2 o 4 The diameter is 20-30nm;

[0046] Ⅱ)NiFe 2 o 4 / Cu 2 Preparation of O magnetic composites:

[0047] (1) At 35°C, stir and dissolve 3.993g of copper acetate hexahy...

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Abstract

The invention belongs to the technical field of catalysts, and particularly relates to a preparation method of a NiFe2O4 / Cu2O magnetic composite nanometer catalyst. According to the preparation method, nickel chloride hexahydrate, ferric trichloride hexahydrate, copper acetate hexahydrate, glucose, sodium hydroxide and deionized water are used as raw materials. The preparation method comprises the following steps: firstly preparing a mixed solution by using the nickel chloride hexahydrate and the ferric trichloride hexahydrate, then heating, separating, washing and drying the mixed solution to obtain a magnetic NiFe2O4 nanometer catalyst; secondly, dissolving copper acetate dihydrate in ethylene glycol monomethylether and stirring, adding NiFe2O4 solid powder to the mixed solution, stirring, adding the glucose, separating, washing and drying to obtain a NiFe2O4 / Cu2O magnetic composite nanometer catalyst. The NiFe2O4 / Cu2O magnetic composite nanometer catalyst can remove organic dyestuff in water through adsorption and photocatalysis efficiently and quickly, can be recycled through magnets and meanwhile has the characteristics of simple preparation and repeated use.

Description

technical field [0001] The invention belongs to the technical field of catalysts, in particular to a NiFe 2 o 4 / Cu 2 Preparation method of O magnetic composite nano catalyst and application of the catalyst. 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. The wastewater contains a large amount of organic matter, has the characteristics of high CODCr, deep color, strong acidity and alkalinity, and has 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, it was found that using Cu 2 O, ZnO, TiO 2 Such semiconductors can undergo photocatalysi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J35/10C02F1/32C02F1/30C02F101/38
CPCC02F1/30C02F1/32B01J23/002B01J23/755C02F2305/10C02F2101/40B01J2523/00B01J35/393B01J35/33B01J35/23B01J35/613B01J35/39B01J2523/17B01J2523/842B01J2523/847
Inventor 何祖明江兴方唐斌黄正逸
Owner CHANGZHOU UNIV HUAIDE COLLEGE
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