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Fe3O4/CeO2 nanometer composite material, preparation method and application

A technology of nano-composite materials and composite materials, applied in chemical instruments and methods, water/sewage treatment, chemical/physical processes, etc., to achieve strong operability, good application prospects, and good application effects

Inactive Publication Date: 2016-04-20
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, compared with natural horseradish peroxidase, the activity of ferric oxide peroxide mimetic enzyme needs to be further improved

Method used

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  • Fe3O4/CeO2 nanometer composite material, preparation method and application
  • Fe3O4/CeO2 nanometer composite material, preparation method and application
  • Fe3O4/CeO2 nanometer composite material, preparation method and application

Examples

Experimental program
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Embodiment 1

[0070] Fe provided in the present invention 3 o 4 / CeO 2 Nanocomposites are mainly prepared by co-precipitation method. The co-precipitation method means that when the solution contains two or more cations, all kinds of cations exist in the solution in a homogeneous phase. With the addition of the precipitating agent, after the precipitation reaction, a uniform precipitation of various components can be obtained. The co-precipitation method is an important method for preparing composite oxide nanoparticles containing two or more metal elements. It has the advantages of simple preparation process, easy control of preparation conditions, short synthesis period, and low cost. Introduce Fe in the present invention below in conjunction with embodiment 3 o 4 / CeO 2 Preparation of nanocomposites and related testing and identification.

[0071] Fe prepared in this example 3 o 4 / CeO 2 The nanocomposite material is prepared by the following steps:

[0072] (1) Preparation of ...

Embodiment 2

[0106] With the Fe prepared in Example 1 3 o 4 / CeO 2 Based on the nanocomposite material, this example mainly introduces the relevant research on the application of the composite material in wastewater containing p-nitrophenol.

[0107] For the convenience of measuring and evaluating the content of p-nitrophenol in the wastewater solution, the common method is to establish the corresponding relationship between the absorbance and the concentration of p-nitrophenol by using the absorbance method with the help of a spectrophotometer, so as to facilitate the determination of the content of p-nitrophenol in the wastewater, but due to P-nitrophenol exists in different states under different pH conditions, so it needs to be treated differently when using the absorbance method to determine the absorption peak. The following is a brief introduction to the relevant situation when using the absorbance method to determine the content of p-nitrophenol in wastewater.

[0108] Determi...

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Abstract

The invention belongs to the technical field of water treatment and particularly relates to a Fe3O4 / CeO2 nanometer composite material, a preparation method and application. The composite material is prepared through a coprecipitation method. The surface of CeO2 is wrapped by nanometer Fe3O4 particles in the composite material. The Fe3O4 / CeO2 nanometer composite material can serve as peroxide mimic enzyme to be applied to treating p-nitrophenol waste water. The invention provides the preparation method of the new Fe3O4 / CeO2 nanometer composite material. The preparation method is high in operability and can well meet requirements of large-scale production and actual application. With the Fe3O4 / CeO2 nanometer composite material prepared through the new method as a base, the inventor performs new application research, when the Fe3O4 / CeO2 nanometer composite material is applied to treating p-nitrophenol wastewater, a good application effect is shown, the p-nitrophenol degrading rate can be well kept at 90% or above, and application prospects are good.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a Fe 3 o 4 / CeO 2 Patent applications for nanocomposite materials, preparation methods and applications. Background technique [0002] As important organic products, phenolic compounds and their derivatives are important chemical raw materials and intermediates, as well as by-products of many industrial productions, and important organic pollutants. Petroleum, coal chemical, dyestuff, pharmaceutical, pesticide, paint, spice, plastic, leather, synthetic fiber, disinfectant and grease chemical factories all produce a variety of phenolic wastewater. Therefore, phenolic wastewater is a kind of industrial wastewater with a wide range of sources. [0003] Phenol-containing wastewater has always been a difficult problem in domestic sewage treatment. Although there are physicochemical methods including adsorption method, extraction method, steam method, coagulation precipita...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C02F1/72
CPCC02F1/725B01J23/83C02F2101/345B01J35/396
Inventor 李春光崔节虎窦书豪梁丽珍罗旭周浩郑宾国何艳红
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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