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Nanometer iron oxide photocatalyst and preparation method thereof

An iron oxide photocatalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problem of reducing the photocatalytic activity of iron oxide, and achieve excellent Spectral absorption performance, uniform mesoporous structure, effect of prolonging service life

Pending Publication Date: 2021-09-17
华北电力大学科技学院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the increase of use time, the photocatalytic activity of iron oxide will decrease significantly

Method used

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  • Nanometer iron oxide photocatalyst and preparation method thereof
  • Nanometer iron oxide photocatalyst and preparation method thereof
  • Nanometer iron oxide photocatalyst and preparation method thereof

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Embodiment 1

[0028] A preparation method of nano iron oxide photocatalyst, comprising the following steps:

[0029] The following parts are molar parts,

[0030] A. Put 23 parts of ferric chloride and 1 part of titanium dioxide into a 10wt% hydrochloric acid solution, heat to 60°C, and stir thoroughly to obtain a precursor; perform ultrasonic oscillation while stirring, and the power density of the ultrasonic wave is: 0.5~0.7W / cm 2 ;

[0031] B. Put the precursor into the reaction kettle and heat it to 210°C, and keep it warm for 3 hours;

[0032] C. Add the product in the reaction kettle to pure water at 85°C for stirring and crystallization for 30 hours;

[0033] D, the product of step C is suction filtered and washed;

[0034] E. Put the product of step D into a muffle furnace, and heat to 935° C. for calcination for 8 hours;

[0035] F. Reduce the temperature of the muffle furnace at a rate of 150°C / hour. When the temperature of the muffle furnace drops to 350°C, the muffle furnac...

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Abstract

The invention discloses a nanometer iron oxide photocatalyst and a preparation method thereof. The preparation method comprises the following steps: A, putting 20 to 30 parts of ferric chloride and 1 to 2 parts of titanium dioxide into a hydrochloric acid solution, performing heating and stirring to prepare a precursor; B, putting the precursor into a reaction kettle, heating to 200-210 DEG C, and keeping the temperature for 2-3 hours; C, adding pure water with the temperature of 80-90 DEG C into a product in the reaction kettle, and performing stirring and crystallizing; D, performing suction filtration and washing on a product in the step C; E, putting the product in the step D into a muffle furnace, heating to 850-950 DEG C, and performing calcining; and F, reducing the temperature of the muffle furnace at the speed of 150 DEG C / h, when the temperature of the muffle furnace is reduced to 350 DEG C, carrying out heat preservation on the muffle furnace for 1 h, then, rising the temperature of the muffle furnace to 500 DEG C, performing heat preservation for 3 h, and then, taking out a product in the muffle furnace and putting the product into pure water to be cooled to the room temperature. The defects in the prior art can be overcome, and the reduction speed of the activity of the iron oxide photocatalyst is reduced.

Description

technical field [0001] The invention relates to the technical field of photocatalyst preparation, in particular to a nanometer iron oxide photocatalyst and a preparation method thereof. Background technique [0002] The photocatalytic effect of semiconductors is widely used in the field of sewage treatment. The bandgap energy of iron oxide is 2.2eV, the maximum absorption wavelength is 560nm, and it shows good photoelectrochemical response to both ultraviolet light and visible light. However, the photocatalytic activity of iron oxide will decrease significantly with the increase of usage time. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a nano-iron oxide photocatalyst and a preparation method thereof, which can solve the deficiencies of the prior art and reduce the reduction rate of the activity of the iron oxide photocatalyst. [0004] In order to solve the above technical problems, the technical solutions...

Claims

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Application Information

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IPC IPC(8): B01J23/745
CPCB01J23/745B01J35/39
Inventor 高慧颖杨华丁晓彤周阳修
Owner 华北电力大学科技学院
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