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Magnetic nano photocatalyst and its preparation method and application

A photocatalyst and magnetic nanotechnology, applied in chemical instruments and methods, physical/chemical process catalysts, nanotechnology, etc., can solve the problems of cumbersome steps, low utilization rate, difficult recovery of powder catalysts, etc., and achieve uniform particle size distribution, The effect of improving the recovery rate

Inactive Publication Date: 2018-02-02
上海源由纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nano-TiO 2 Powdered catalysts are more difficult to recycle, resulting in lower utilization
The common method of magnetic nano-photocatalyst has a long cycle, cumbersome steps, and it is not easy to control the particle size and particle size distribution of nanoparticles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A magnetic nano photocatalyst whose powder microscopic particles have TiO 2 Catalytic layer, the catalytic layer has a magnetic core Fe inside 3 o 4 The average particle size of the magnetic nano photocatalyst is 100nm; the mass percentage of metal in the magnetic nano photocatalyst is: TiO 2 Or Ti99%; Fe 3 o 4 or Fe1%.

Embodiment 2

[0030] A magnetic nano photocatalyst whose powder microscopic particles have TiO 2 Catalytic layer, the catalytic layer has a magnetic core Fe inside 3 o 4 The average particle size of the magnetic nano photocatalyst is 20nm; the mass percentage of metal in the magnetic nano photocatalyst is: TiO 2 Or Ti80%; Fe 3 o 4 Or Fe20%.

Embodiment 3

[0032] A magnetic nano photocatalyst whose powder microscopic particles have TiO 2 Catalytic layer, the catalytic layer has a magnetic core Fe inside 3 o 4 The average particle size of the magnetic nano photocatalyst is 50nm; the mass percentage of metal in the magnetic nano photocatalyst is: TiO 2 Or Ti90%; Fe 3 o 4 Or Fe10%.

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PUM

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Abstract

The invention relates to a magnetic nanometer photocatalyst, a preparing method thereof and applications of the photocatalyst. Powder micro-particles of the photocatalyst are provided with a TiO2 catalytic layer. The inner of the catalytic layer is provided with a Fe3O4 magnetic core. The preparing method includes simultaneously reducing a titanium salt solution and an iron salt solution in a reduction solvent having a dispersing function, separating, and calcinating to obtain a uniformly-dispersed composite nanometer titanium-iron catalyst. Nanometer TiO2 and Fe are composited through mild reaction conditions in the preparing method, thus increasing the recovery rate of the titanium dioxide photocatalyst to the utmost.

Description

technical field [0001] The invention relates to a magnetic nanometer photocatalyst, a preparation method and an application thereof, and belongs to the fields of photocatalytic materials, composite materials and magnetic materials. Background technique [0002] In recent years, global environmental pollution has become more and more serious, and at the same time facing a severe energy crisis, scientists from all over the world are looking for new methods that are both environmentally friendly and energy-saving. Photocatalysis can convert sunlight into usable energy such as chemical energy and electric energy, and can directly degrade various pollutants in water and air in the reaction. Therefore, photocatalysis has great potential in the fields of environmental purification and new energy development. research potential. The use of photocatalysis can achieve effects that cannot be obtained through other reactions. The speed and selectivity of the reaction can be determined ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J35/02B82Y30/00B82Y40/00A62D3/176A62D101/20
CPCA62D3/176A62D2101/20B01J23/745B01J35/0013B01J35/004B01J35/006
Inventor 高源黎慧茹爱华
Owner 上海源由纳米科技有限公司