Method for preparing hierarchical structure bismuth oxybromide hollow microsphere photocatalysis material

A photocatalytic material, bismuth oxybromide technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low photocatalytic efficiency and low cost, and achieve high photocatalytic performance and cost. Low, improved separation effect

Inactive Publication Date: 2011-10-26
SHANDONG UNIV
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Problems solved by technology

[0004] Aiming at the problem of low photocatalytic efficiency of bismuth oxybromide photocatalytic materials and the complication of preparing bismuth oxybromide hollow structure, the present invention provides a one-pot synthesis of bismuth oxybromide hollow microsphere photocatalytic material with hierarchical structure The preparation method of this method is low in cost and can be mass-produced

Method used

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  • Method for preparing hierarchical structure bismuth oxybromide hollow microsphere photocatalysis material
  • Method for preparing hierarchical structure bismuth oxybromide hollow microsphere photocatalysis material
  • Method for preparing hierarchical structure bismuth oxybromide hollow microsphere photocatalysis material

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Effect test

Embodiment 1

[0017] (1) Dissolve 0.97 g of bismuth nitrate and 1.17 g of 1-hexadecyl-3-methylimidazole bromide in 40 mL of ethylene glycol methyl ether, and magnetically stir for 30 minutes to dissolve completely. The two solutions were then mixed and stirring was continued for 10 minutes;

[0018] (2) Transfer the above-mentioned mixed solution to a closed autoclave, and place it at 160° C. for 0.5 hours to react;

[0019] (3) After cooling to room temperature, the product was collected, washed, and vacuum-dried.

Embodiment 2

[0021] (1) Dissolve 0.97g of bismuth nitrate and 1.17g of 1-hexadecyl-3-methylimidazole bromide in 40mL of ethylene glycol methyl ether, and magnetically stir for 30 minutes to dissolve them completely, and then mix the two solutions Mix and continue stirring for 10 minutes;

[0022] (2) Transfer the above mixed solution to a closed autoclave, and place it at 160° C. for 2 hours;

[0023] (3) After cooling to room temperature, the product was collected, washed, and vacuum-dried.

Embodiment 3

[0025] (1) Dissolve 0.97g of bismuth nitrate and 1.17g of 1-hexadecyl-3-methylimidazole bromide in 40mL of ethylene glycol methyl ether, and magnetically stir for 30 minutes to dissolve them completely, and then mix the two solutions Mix and continue stirring for 10 minutes.

[0026] (2) Transfer the above mixed solution to a closed autoclave, and place it at 160° C. for 12 hours;

[0027] (3) After cooling to room temperature, the product was collected, washed, and vacuum-dried.

[0028] Photocatalytic performance test

[0029] The photocatalytic performance of the material was characterized by degradation of rhodamine B dye and reduction of hexavalent metal chromium ions under visible light. A xenon lamp (300 watts) with a UV filter was used as the light source. The photocatalytic material powder is dispersed in a certain concentration of rhodamine B dye or hexavalent chromium ion solution, placed in a dark place and continuously magnetically stirred for a period of time,...

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Abstract

The invention relates to a method for preparing a hierarchical structure bismuth oxybromide hollow microsphere photocatalysis material, comprising the steps of: respectively dissolving bismuth nitrate and brominated 1-cetyl-3-methylimidazole methylimidazole in ethylene glycol monobutyl ether, mixing the two solutions, and placing the mixed solution in an enclosed autoclave to react at the temperature of 140-180 DEG C for 0.5-12 hours. The preparation method provided by the invention can be carried out under the hydro-thermal condition, has advantages of low cost as well as simple and maneuverable equipment, can be applied in batch production, and has an important potential application value in industrial production. The prepared hierarchical structure bismuth oxybromide hollow microspherephotocatalysis material can markedly improve the separation of photocarrier and has high photocatalysis performance.

Description

technical field [0001] The invention relates to a novel bismuth oxybromide hollow microsphere photocatalytic material and a preparation method thereof, belonging to the technical field of photocatalytic material preparation. Background technique [0002] Since the physical / chemical properties of inorganic materials strongly depend on their microstructures, the synthetic preparation of their ordered three-dimensional structures has been a hotspot in the field of materials chemistry. Among them, more and more attention is focused on hollow hierarchical structural materials. This type of material integrates the common properties of nanoscale basic units and assembled assemblies, and has important application prospects in the fields of drug delivery, lithium-ion batteries and catalysis. In recent years, conventional template methods usually use hard templates or soft templates to control the growth process of hollow structural materials. However, this method is often cumbersom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/06B01J35/08A62D3/10
Inventor 张晓阳程合锋黄柏标秦晓燕
Owner SHANDONG UNIV
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