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Manufacturing method of magnetic CoFe2O4/MCM-41/TiO2 composite materials

A composite material, cofe2o4 technology, applied in the field of composite material preparation, can solve the problems of low photocatalytic performance and narrow light response range, etc.

Inactive Publication Date: 2014-07-16
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a magnetic CoFe 2 o 4 / MCM-41 / TiO 2 Preparation method of composite material

Method used

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  • Manufacturing method of magnetic CoFe2O4/MCM-41/TiO2 composite materials
  • Manufacturing method of magnetic CoFe2O4/MCM-41/TiO2 composite materials
  • Manufacturing method of magnetic CoFe2O4/MCM-41/TiO2 composite materials

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specific Embodiment approach 1

[0025] Specific implementation mode 1: Magnetic CoFe in this embodiment mode 2 o 4 / MCM-41 / TiO 2 The preparation method of composite material is carried out according to the following steps:

[0026] 1. CoFe 2 o 4 Preparation of:

[0027] 0.5-0.6gFeCl 3 ·6H 2 O and 0.1-0.15g CoCl 2 ·6H 2O is evenly dispersed in 25.0ml of ethylene glycol to make a solution, add 1-1.2g of ammonium acetate under stirring to make it fully dispersed, transfer the obtained mixed solution to a 50ml capacity reactor and seal it, and then place it in a constant temperature box heated to 180°C and kept for 24h, washed 4 times with absolute ethanol, and dried under vacuum at 60°C for 6h to obtain CoFe 2 o 4 ;

[0028] 2. CoFe 2 o 4 / . Preparation of MCM-41:

[0029] Dissolve 0.3-0.35g of cetyltrimethylammonium bromide (CTAB) in a mixed solution of 30-35ml of ammonia water and 40-45ml of deionized water, and stir for 30 minutes in a water bath at 40°C to form a gel bunch, then add 0.05-0.1g...

specific Embodiment approach 2

[0032] Specific embodiment two: the difference between this embodiment and specific embodiment one is that in step one, 0.541gFeCl 3 ·6H 2 O and 0.136 g CoCl 2 ·6H 2 O was uniformly dispersed in 25.0ml ethylene glycol to make a solution. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0033] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that 1.155 g of ammonium acetate is added under stirring in step 1 to fully disperse it. Others are the same as those in the first or second embodiment.

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Abstract

The invention discloses a manufacturing method of magnetic CoFe2O4 / MCM-41 / TiO2 composite materials and relates to a manufacturing method of composite materials. The technical problem that an existing photocatalyst is narrow in response range, low in photocatalytic performance and difficult to recycle is solved. The method comprises the steps that first, CoFe2O4 is manufactured; second, CoFe2O4 / MCM-41 is manufactured; and third, CoFe2O4 / MCM-41 / TiO2 is manufactured. TiO2 particles loaded in an MCM-41 hole channel and on the surface of the MCM-41 hole channel generate electron-hole pairs under the condition of UV irradiation, strong electric field intensity is achieved in the MCM-41 hole channel, electrons are gathered on the surface of the MCM-41 hole channel, accordingly, the effect of electron-hole pair combination is restrained, organic matter adsorbed by MCM-41 can obtain free active groups easily, and therefore the photocatalytic activity of the photocatalyst is improved. The method belongs to the field of photocatalytic material manufacturing.

Description

technical field [0001] The invention relates to a preparation method of a composite material. Background technique [0002] In the era of rapid industrial development, the problem of environmental pollution has also followed, especially the problem of water pollution has attracted more and more attention. In recent years, industrial production and agricultural development in various countries have discharged a large amount of wastewater, which not only pollutes the water environment, but also exacerbates the global shortage of drinking water. Semiconductor photocatalysts, especially TiO 2 , due to the discontinuity of its energy band, the lifetime of electrons and holes is also longer, and it generates a large number of hole-electron pairs under the excitation of ultraviolet light. These electron-hole pairs have a high oxidation ability and convert most Organic pollutants, such as phenol, are degraded into non-toxic and harmless CO 2 、H 2 O and other inorganic substances...

Claims

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Application Information

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IPC IPC(8): B01J29/76B01J35/00
Inventor 万家峰史秉楠
Owner HEILONGJIANG UNIV
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