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BaTiO3/BiOIO3 composite material as well as preparation method and application thereof

A composite material and dosage ratio technology, applied in the field of photocatalysis, can solve the problems of low solar energy conversion efficiency, achieve the effects of expanding the spectral absorption range, promoting the separation of photogenerated carriers, and inhibiting electron-hole recombination

Pending Publication Date: 2022-08-05
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of BaTiO 3 / BiOIO 3 The composite material and its preparation method and application are used to solve the technical problems of the existing catalytic materials such as low solar energy conversion efficiency and only responding to a part of light when performing photocatalytic reactions

Method used

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  • BaTiO3/BiOIO3 composite material as well as preparation method and application thereof
  • BaTiO3/BiOIO3 composite material as well as preparation method and application thereof
  • BaTiO3/BiOIO3 composite material as well as preparation method and application thereof

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Effect test

Embodiment 1

[0038] A BaTiO 3 / BiOIO 3 The preparation method of composite material comprises the following steps:

[0039] 3 mmol of BaTiO 3 Powder and 1.5mmol of Bi(NO 3 ) 3 ·5H 2 Add 30ml of distilled water, stir for 0.5h to form a suspension, then add 1.5mmol of NaIO to the suspension 3 , after stirring for 0.5h, a mixed solution was obtained, and the mixed solution was transferred to a 50ml polytetrafluoroethylene-lined reaction kettle, and the hydrothermal reaction was carried out at 150 ° C. After 6h of heat preservation, a powder product was obtained. Washed with ethanol and dried at 60°C under vacuum to obtain BaTiO 3 and BiOIO 3 BaTiO with a molar ratio of 2:1 3 / BiOIO 3 composite material.

Embodiment 2

[0041] A BaTiO 3 / BiOIO 3 The preparation method of composite material comprises the following steps:

[0042] 1.5 mmol of BaTiO 3 Powder and 1.5mmol of Bi(NO 3 ) 3 ·5H 2 Add 30ml of distilled water, stir for 0.5h to form a suspension, then add 1.5mmol of NaIO to the suspension 3 , after stirring for 0.5h, a mixed solution was obtained, and the mixed solution was transferred to a 50ml polytetrafluoroethylene-lined reaction kettle, and the hydrothermal reaction was carried out at 150 ° C. After 6h of heat preservation, a powder product was obtained. Washed with ethanol and dried at 60°C under vacuum to obtain BaTiO 3 and BiOIO 3 BaTiO with a molar ratio of 1:1 3 / BiOIO 3 composite material.

Embodiment 3

[0044] A BaTiO 3 / BiOIO 3 The preparation method of composite material comprises the following steps:

[0045] Put 0.75 mmol of BaTiO 3 Powder and 1.5mmol of Bi(NO 3 ) 3 ·5H 2 Add 30ml of distilled water, stir for 0.5h to form a suspension, then add 1.5mmol of NaIO to the suspension 3 , after stirring for 0.5h, a mixed solution was obtained, and the mixed solution was transferred to a 50ml polytetrafluoroethylene-lined reaction kettle, and the hydrothermal reaction was carried out at 150 ° C. After 6h of heat preservation, a powder product was obtained. Washed with ethanol and dried at 60°C under vacuum to obtain BaTiO 3 and BiOIO 3 BaTiO with a molar ratio of 1:2 3 / BiOIO 3 composite material.

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Abstract

The invention discloses a BaTiO3 / BiOIO3 composite material as well as a preparation method and application thereof, belongs to the technical field of photocatalysis, and solves the technical problems that an existing catalytic material is low in solar energy conversion efficiency, only responds to a part of light and the like during photocatalytic reaction. According to the preparation method of the BaTiO3 / BiOIO3 composite material disclosed by the invention, BiOIO3 and BaTiO3 with proper energy band structures are selected, a hydrothermal method is adopted, BiOIO3 is introduced to the surface of BaTiO3 powder to prepare and construct the composite material, the hydrothermal reaction condition is mild, the time is short, and the preparation method is suitable for industrial production; the photodegradation efficiency of the obtained BaTiO3 / BiOIO3 composite material is far higher than that of pure-phase BaTiO3 and BiOIO3, and the BaTiO3 / BiOIO3 composite material is expected to be applied to the fields of sewage treatment and the like.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, in particular to a kind of BaTiO 3 / BiOIO 3 Composite materials and methods for their preparation and applications. Background technique [0002] With the rapid development of society and economy, human beings are increasingly using and destroying nature, and the accumulation of environmental crises has become more and more serious. Among them, water environment pollution has become an important factor restricting the sustainable development of human beings. Steel, pharmaceutical, textile, paper and other industries produce a large amount of industrial wastewater containing organic pollutants. Therefore, solving the problem of water pollution caused by various industries is an important problem facing the world at present. Solar energy is a clean energy with abundant storage, and semiconductor photocatalysis technology is one of the typical means of utilizing solar energy. Compared with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/138C02F1/30C02F101/38C02F101/34
CPCB01J27/138C02F1/30C02F2101/38C02F2101/34C02F2101/345C02F2305/10B01J35/39Y02W10/37
Inventor 景盼盼何晨普王沛峰崔永飞
Owner SHAANXI UNIV OF SCI & TECH
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