A method and application of preparing dandelion-like fe3o4@zno core-shell structure complex based on heterogeneous nucleation method

A dandelion-shaped, core-shell structure technology, applied in chemical instruments and methods, water treatment of special compounds, chemical/physical processes, etc., can solve the problems of difficult recycling and high cost of wastewater treatment, and achieve easy control, uniform appearance, and low cost effect

Inactive Publication Date: 2018-10-02
HARBIN INST OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing ZnO is not easy to recycle and the cost of wastewater treatment is high after it is used for wastewater treatment, and to provide a method for preparing dandelion-shaped Fe based on heterogeneous nucleation method. 3 o 4 Methods and applications of @ZnO core-shell complexes

Method used

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  • A method and application of preparing dandelion-like fe3o4@zno core-shell structure complex based on heterogeneous nucleation method
  • A method and application of preparing dandelion-like fe3o4@zno core-shell structure complex based on heterogeneous nucleation method
  • A method and application of preparing dandelion-like fe3o4@zno core-shell structure complex based on heterogeneous nucleation method

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specific Embodiment approach 1

[0035] Specific implementation mode 1: This implementation mode is a method for preparing dandelion-like Fe based on heterogeneous nucleation method 3 o 4 The @ZnO core-shell complex method is done in the following steps:

[0036] 1. Preparation of Fe 3 o 4 Nanoparticles:

[0037] FeCl 3 ·6H 2Dissolve O and anhydrous sodium acetate in ethylene glycol, and then stir and react at a stirring speed of 300r / min to 400r / min for 20min to 40min to obtain a mixed solution A; add the mixed solution A to a polytetrafluoroethylene reactor , then react at a temperature of 200°C for 6h to 9h, and then naturally cool to room temperature to obtain the reactant I; use anhydrous ethanol to wash the reactant I for 3 to 5 times, and then at a temperature of 60°C to 70°C Vacuum drying for 10h ~ 12h to obtain Fe 3 o 4 Nanoparticles;

[0038] FeCl as described in step 1 3 ·6H 2 The mass ratio of O to the volume of ethylene glycol is (2g~3g):100mL;

[0039] The mass of anhydrous sodium ac...

specific Embodiment approach 2

[0057] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the FeCl described in step one 3 ·6H 2 The mass of O and the volume ratio of ethylene glycol are 2.7g:100mL. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0058] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the mass of anhydrous sodium acetate described in step one and the volume ratio of ethylene glycol are 7.2g:100mL. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a method for preparing a dandelion-shaped Fe3O4@ZnO core-shell structure compound on the basis of the heterogeneous nucleation method and application, and relates to a method for preparing the core-shell structure compound and application. The method aims at solving the problems that ZnO can not be easily recycled after being used for wastewater processing and the wastewater processing cost is high. The method includes the steps of firstly, preparing Fe3O4 nano particles; secondly, preparing ZnO seed crystals; thirdly, making ZnO nanorod crystal grow, and obtaining the dandelion-shaped Fe3O4@ZnO core-shell structure compound. The method is easy to operate, easy to control, low in cost and free of toxin, the prepared dandelion-shaped Fe3O4@ZnO core-shell structure compound is uniform in morphology and has superparamagnetism, product extraction is convenient, repeatability is high, and important display significance is achieved. The dandelion-shaped Fe3O4@ZnO core-shell structure compound can be obtained.

Description

technical field [0001] The invention relates to a method and application for preparing a core-shell structure compound. Background technique [0002] With the rapid development of industrialization and society, environmental problems have become one of the major problems facing human society today, and the soil and water pollution caused by organic dyes has seriously affected people's health and survival. At present, physical and chemical methods and biological methods are often used to solve the environmental problems caused by organic dyes, but these methods usually cause secondary pollution to the environment. Photocatalytic degradation can effectively decompose organic dyes into H 2 O and CO 2 and other inorganic substances, so it has broad application prospects in the field of sewage treatment. The materials currently used for photocatalysis mainly include TiO 2 , CdS, ZnO and WO 3 and other n-type semiconductor compounds. [0003] ZnO is a new type of wide-bandga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/80B01J35/10C02F1/32
CPCB01J23/80B01J35/0033B01J35/004B01J35/10C02F1/32C02F1/725C02F2305/10
Inventor 韩晓军崔新宇
Owner HARBIN INST OF TECH
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