Preparation method of black Bi4Ti3O12 material and application thereof

A black, certain amount of technology, applied in chemical instruments and methods, water/sludge/sewage treatment, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of narrow response range and consumption of photocatalytic materials

Inactive Publication Date: 2018-02-27
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects in the prior art, such as: the existing photocatalytic materials have a narrow response range to visible light and need to consume other rare resources (such as precious metals, rare earth elements), etc. The present invention provides a black Bi 4 Ti 3 o 12 Material, the black material is in the form of flakes and has the ability to absorb light of full color light, which not only effectively expands the spectral absorption range of raw materials, but also does not need to consume other rare resources

Method used

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  • Preparation method of black Bi4Ti3O12 material and application thereof
  • Preparation method of black Bi4Ti3O12 material and application thereof
  • Preparation method of black Bi4Ti3O12 material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Bi 4 Ti 3 o 12 Preparation of materials:

[0025] Grind 0.47 g of bismuth oxide, 1.7 g of sodium chloride and 2.2 g of potassium chloride evenly, then add 0.12 g of P25 and grind them evenly; Calcined at ℃ for 2 h, cooled naturally, washed with deionized water, and dried to obtain Bi 4 Ti 3 o 12 Material.

[0026] (2) Black Bi 4 Ti 3 o 12 Preparation of materials:

[0027] 0.5 g Bi 4 Ti 3 o 12 Materials with 0.1 g NaBH 4 Grind fully and evenly, and put the mixture in a tube furnace at 300°C for calcination for 30 min under the condition of feeding argon protective gas, cool to room temperature naturally, wash with deionized water until neutral, and dry to obtain black Bi 4 Ti 3 o 12 Material.

[0028] (3) Photocatalytic degradation test:

[0029] Take the black Bi in step (2) 4 Ti 3 o 12 The photocatalytic degradation test was carried out on the material samples in a photochemical reaction apparatus, and the degradation rate of tetracycline by t...

Embodiment 2

[0031] (1) Bi 4 Ti 3 o 12 Preparation of materials:

[0032] Grind 0.47 g of bismuth oxide, 1.7 g of sodium chloride and 2.2 g of potassium chloride evenly, then add 0.12 g of P25 to grind evenly; put the above mixture into a muffle furnace for high-temperature calcination, calcination at 750°C for 2 h, and cool naturally , washed with deionized water, and dried to obtain Bi 4 Ti 3 o 12 Material.

[0033] (2) Black Bi 4 Ti 3 o 12 Preparation of materials:

[0034] 0.6 g Bi 4 Ti 3 o 12 Materials with 0.1 g NaBH 4 Grind fully and evenly, and put the mixture in a tube furnace at 300°C for calcination for 30 min under the condition of feeding argon protective gas, cool to room temperature naturally, wash with deionized water until neutral, and dry to obtain black Bi 4 Ti 3 o 12 Material.

[0035] (3) Photocatalytic degradation test:

[0036] Take the black Bi in step (2) 4 Ti 3 o 12 The photocatalytic degradation test of the material samples was carried out in...

Embodiment 3

[0038] (1) Bi 4 Ti 3 o 12 Preparation of materials:

[0039] Grind 0.47 g of bismuth oxide, 1.7 g of sodium chloride, and 2.2 g of potassium chloride evenly, then add 0.12 g of P25 to grind evenly; put the above mixture into a muffle furnace for high-temperature calcination at 750°C for 2 h, and cool naturally. Washed with deionized water and dried to obtain Bi 4 Ti 3 o 12 Material.

[0040] (2) Black Bi 4 Ti 3 o 12 Preparation of materials:

[0041] 0.7 g Bi 4 Ti 3 o 12 Materials with 0.1 g NaBH 4 Grind fully and evenly, and put the mixture in a tube furnace at 300°C for calcination for 30 min under the condition of feeding argon protective gas, cool to room temperature naturally, wash with deionized water until neutral, and dry to obtain black Bi 4 Ti 3 o 12 Material.

[0042] (3) Photocatalytic degradation test:

[0043] Take the black Bi in step (2) 4 Ti 3 o 12 The photocatalytic degradation test of the material samples was carried out in a photochemic...

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Abstract

The invention belongs to the fields of material preparation and environmental treatment, particularly relates to a preparation method of a black Bi4Ti3O12 material and application thereof. According to the preparation method of the black Bi4Ti3O12 material and the application thereof, the black Bi4Ti3O12 material is successfully prepared by a traditional molten salt method and a reduction method.The preparation method comprises specific steps: firstly, bismuth oxide, sodium chloride, potassium chloride and titanium dioxide are ground and then placed in a muffle furnace to be calcined to obtain a Bi4Ti3O12 material; then the Bi4Ti3O12 material is ground with sodium borohydride and calcined in a tube furnace to obtain the black Bi4Ti3O12 material. Photocatalytic degradation of tetracyclineby the black Bi4Ti3O12 material is also tested. The preparation method adopted by the invention is simple and avoids existence of instability factors of coupling, loading and other modification methods, and is expected to be applied to industrial production. In addition, the black Bi4Ti3O12 material exhibits good catalytic degradation under visible light.

Description

technical field [0001] The invention belongs to the fields of material preparation and environmental management, and in particular relates to a black Bi 4 Ti 3 o 12 Preparation methods of materials and their applications. Background technique [0002] Antibiotics are chemical substances produced by certain microorganisms, animals and plants, substances that can inhibit the proliferation of microorganisms and other cells, and are widely used as drugs for treating various bacterial infections or inhibiting pathogenic microbial infections. In recent years, photocatalytic technology has been greatly developed as a green and environmentally friendly means of governing the environment. In order to design and construct a highly active catalyst, researchers have used various technical means such as noble metal deposition and semiconductor coupling to improve the photocatalytic process. Photocatalytic responsiveness. [0003] At present, the widely studied photocatalysts include ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G29/00B01J23/18C02F1/30C02F101/38C02F103/34
CPCB01J23/18B01J35/004C01G29/00C01P2004/20C02F1/30C02F2101/38C02F2103/343C02F2305/10
Inventor 刘锡清汪涛闫永胜李春香周志平
Owner JIANGSU UNIV
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