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A 1d/3d hierarchical heterojunction magnetic semiconductor and its preparation method and application

A magnetic semiconductor, graded technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of poor photocatalytic activity and good photocatalytic activity

Active Publication Date: 2022-06-10
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a 1D / 3D hierarchical heterojunction magnetic semiconductor and its preparation method and application, which can overcome the problem of poor photocatalytic activity caused by the easy recombination of photogenerated electron-hole pairs existing in existing iron oxide materials Problem, the obtained 1D / 3D hierarchical heterojunction magnetic semiconductor has good photocatalytic activity

Method used

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  • A 1d/3d hierarchical heterojunction magnetic semiconductor and its preparation method and application
  • A 1d/3d hierarchical heterojunction magnetic semiconductor and its preparation method and application
  • A 1d/3d hierarchical heterojunction magnetic semiconductor and its preparation method and application

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preparation example Construction

[0044] The HPW

[0045] The HPW

[0046] In the present invention, without special instructions, the raw materials used are commercially available commodities well known in the art.

[0051] In the present invention, the polyvinylpyrrolidone (PVP for short) is used as an inducer, and its effect will be described in detail later.

[0055] In the present invention, the hydrothermal reaction is preferably carried out in an autoclave. The present invention preferably uses the Prussian

[0060] In the present invention, the oxygen-containing atmosphere is preferably an air atmosphere.

[0063] In the present invention, the inner diameter of the carbon nanotube is preferably 5-12 nm, more preferably 6-10 nm, further preferably

[0069] The present invention has no special requirements to the method of the application, and the application method well known in the art can be used. in this

Embodiment 1

[0076] The PB precursor solution was transferred to a 100 mL polytetrafluoroethylene liner, placed in an autoclave, and heated

[0078] HPW

Embodiment 2

[0082] The PB precursor solution was transferred to a 100 mL polytetrafluoroethylene liner, placed in an autoclave, and heated

[0084] HPW

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Abstract

The invention provides a 1D / 3D graded heterojunction magnetic semiconductor and its preparation method and application, belonging to the technical field of nanomaterial photocatalysis. The 1D / 3D hierarchical heterojunction magnetic semiconductor integrally includes carbon nanotubes and HPW supported on the carbon nanotubes x / Fe 2 o 3 Nanomaterials; the HPW x / Fe 2 o 3 Nanomaterials including Fe 2 o 3 and fixed on the Fe 2 o 3 H on 3 o 40 PW 12 .xH 2 O; the Fe 2 o 3 It is a hollow cubic structure; the 1D / 3D hierarchical heterojunction magnetic semiconductor is a bionic chloroplast structure. The invention can overcome the problem of poor photocatalytic activity caused by low separation efficiency of photogenerated electron-hole pairs in the existing iron oxide materials, and the obtained magnetic semiconductor has good photocatalytic activity and can effectively treat tetracycline wastewater.

Description

A 1D / 3D hierarchical heterojunction magnetic semiconductor and its preparation method and application technical field The present invention relates to nanometer material photocatalysis technical field, relate in particular to a kind of 1D / 3D graded heterojunction optical magnetism Semiconductors and methods of making and using the same. Background technique The abuse of antibiotics in fields such as medical treatment, animal husbandry, crop production causes soil and water pollution, which seriously threatens the ecological environment. environment and human health. The treatment of antibiotic pollution has become a technical difficulty and research urgently to be solved in the current environmental field hot spot. [0003] Solar energy is recognized as a green, sustainable and high-quality energy that can be obtained by human beings. Numerous studies have shown that light Catalytic technologies, especially multi-component photocatalytic composites, have shown rema...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/18B01J31/28B01J27/188B01J21/18B01J37/10B01J35/10B01J37/34B82Y30/00B82Y40/00C02F1/30C02F101/30C02F101/34C02F101/38
CPCB01J27/188B01J21/185B01J37/10B01J37/346C02F1/30C02F2101/30C02F2101/34C02F2101/38C02F2305/10B01J35/23B01J35/33B01J35/633B01J35/647B01J35/615
Inventor 刘世熙孙彭亮曹秋娥
Owner YUNNAN UNIV