A reusable magnetic Fe that photocatalytically degrades dyes 3 o 4 The preparation method of microsphere and its application

A photocatalysis and dye technology, applied in the preparation of microspheres, chemical instruments and methods, microcapsule preparations, etc., can solve the problems of difficult reuse, low degradation rate of photocatalytic degradation dyes, difficult separation, etc., and improve the catalytic degradation efficiency. , Simple and efficient separation effect

Active Publication Date: 2019-09-10
WENZHOU UNIV OUJIANG COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of photocatalytic degradation dye and reusable magnetic Fe 3 o 4 Preparation method of microspheres

Method used

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  • A reusable magnetic Fe that photocatalytically degrades dyes <sub>3</sub> o <sub>4</sub> The preparation method of microsphere and its application
  • A reusable magnetic Fe that photocatalytically degrades dyes <sub>3</sub> o <sub>4</sub> The preparation method of microsphere and its application
  • A reusable magnetic Fe that photocatalytically degrades dyes <sub>3</sub> o <sub>4</sub> The preparation method of microsphere and its application

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specific Embodiment approach 1

[0023] Specific implementation mode 1: This embodiment can photocatalytically degrade dyes and reusable magnetic Fe 3 o 4 The preparation method of microsphere is carried out according to the following steps:

[0024] 1. Dissolve ferric chloride hexahydrate and anhydrous sodium acetate in ethylene glycol at a mass ratio of 1.0: (3.0 to 5.0) to obtain a suspension reaction solution, which is transferred to a water bath constant temperature oscillator and heated to 45 to 45 55°C, then according to the volume ratio of ethylene glycol to ethylenediamine (10.0-4.0):1.0, add ethylenediamine at a temperature of 45-55°C, and magnetically stir the reaction at 25-35°C to obtain a clear reaction solution;

[0025] 2. Transfer the clarified reaction solution obtained in step 1 to a reaction kettle with a polytetrafluoroethylene liner, react at a temperature of 180-220°C for 5-7 hours, and then pour the reaction solution in the reaction kettle into a beaker The product was separated with...

specific Embodiment approach 2

[0026] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that step 1 dissolves 1 g of ferric chloride hexahydrate and 3 to 5 g of anhydrous sodium acetate in 45 to 50 mL of ethylene glycol to obtain a suspension reaction solution, Transfer to a water bath constant temperature shaker and shake to heat to 45-55°C, then add 5-10mL of ethylenediamine at a temperature of 45-55°C. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0027] Specific embodiment three: the difference between this embodiment and specific embodiment two is that step 1 dissolves 1 g of ferric chloride hexahydrate and 3 to 5 g of anhydrous sodium acetate in 45 to 50 mL of ethylene glycol to obtain a suspension reaction solution, Transfer to a water bath constant temperature shaker and shake to heat to 50°C, then add 5-10mL of ethylenediamine at a temperature of 50°C. Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention provides a preparation method of magnetic Fe3O4 microspheres capable of photo-catalytically degrading dyes and used repeatedly and application thereof, relates to a preparation method and application of magnetic Fe3O4 microspheres easy to separate and used repeatedly and aims at solving the problems of existing photo-catalytical dye degrading rate, difficult separation and difficult repeated usage. The preparation method comprises the steps that 1, ferric trichloride hexahydrate and anhydrous sodium acetate are dissolved in ethylene glycol, heating is performed to reach 45-55 DEG C, then ethylenediamine is added, and magnetic stirring reaction is performed to obtain clarified reaction solution; 2, reaction is performed under the temperature of 180-220 DEG C, products are separated by a magnet, and washing and drying are performed to obtain the magnetic Fe3O4 microspheres. The magnetic Fe3O4 microspheres are used for photo-catalytically degrading organic dyes in a water body. The magnetic Fe3O4 microspheres can utilize a magnetic separation method for separation and recovery, the separation process is simple and convenient, and the efficiency of catalyzing multiple dyes is high.

Description

technical field [0001] The invention relates to a magnetic Fe which is easy to separate, photocatalytically degrades various dyes and can be reused. 3 o 4 Preparation methods and applications of microspheres. Background technique [0002] With the development of chemical industry, dyestuff, plastics, textile and other industries, the discharge of organic dyes is increasing rapidly. However, organic dyes are often not properly treated before discharge, resulting in serious pollution of organic dyes to soil and water. The usual treatment methods take a long time, cannot treat organic dyes efficiently, and the chemical reagents used in the recovery treatment are likely to cause secondary pollution. At the same time, if the organic dye cannot be processed in a short time, the added reagent will be exposed to the air for a long time, which will easily lead to its oxidative deterioration, thereby affecting its recycling. In addition, the chemical reagents used generally have hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/02B01J23/745C02F1/72
CPCB01J13/02C02F1/722C02F1/725B01J23/745C02F2305/10C02F2305/026C02F2101/308B01J35/39B01J35/33
Inventor 梁大鑫郑恺邸明宇包文慧张巨擘韩世岩赵昕悦高龙雪
Owner WENZHOU UNIV OUJIANG COLLEGE
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