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Preparation method of ultra-thin BiOCl nano-sheet photocatalyst

A photocatalyst, nanosheet technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problem of low utilization of light energy

Active Publication Date: 2017-03-15
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The best way is to use solar light energy, but this way is not smooth, it is necessary to overcome the obstacle of low light energy utilization rate of human beings so far

Method used

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  • Preparation method of ultra-thin BiOCl nano-sheet photocatalyst
  • Preparation method of ultra-thin BiOCl nano-sheet photocatalyst
  • Preparation method of ultra-thin BiOCl nano-sheet photocatalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Take 1-hexadecyl-3-methylimidazole chloride as the step of preparing photocatalyst BiOCl nanosheets as chlorine source:

[0026] Take 1 mmol of bismuth nitrate pentahydrate, add 1 mL of glacial acetic acid and 9 mL of deionized water to make solution A, take 1 mmol of 1-hexadecyl-3-methylimidazole chloride and add 10 mL of absolute ethanol to make solution B. Add solution B dropwise to solution A, and stir rapidly. After the dropwise addition, continue to stir for 15-45 minutes, pour the above solution into a high-pressure reactor equipped with a polytetrafluoroethylene liner, at 140-160°C React for 12-24 hours. The obtained product is centrifuged, washed three times with deionized water and absolute ethanol, and finally dried at 30-60°C.

Embodiment 2

[0028] Take 1-hexadecyl-3-methylimidazole chloride as the step of preparing photocatalyst BiOCl nanosheets as chlorine source:

[0029] Take 1 mmol of bismuth nitrate pentahydrate, add 1 mL of glacial acetic acid and 9 mL of deionized water to make solution A, take 1 mmol of 1-hexadecyl-3-methylimidazole chloride and add 10 mL of absolute ethanol to make solution B. Add solution B dropwise to solution A, and stir rapidly. After the dropwise addition, continue stirring for 15 minutes, pour the above solution into a high-pressure reactor equipped with a polytetrafluoroethylene liner, and react at 140°C for 12 hours. The obtained product was centrifuged, washed three times with deionized water and absolute ethanol, and finally dried at 50°C.

Embodiment 3

[0031] Take 1-hexadecyl-3-methylimidazole chloride as the step of preparing photocatalyst BiOCl nanosheets as chlorine source:

[0032] Take 1 mmol of bismuth nitrate pentahydrate, add 1 mL of glacial acetic acid and 9 mL of deionized water to make solution A, take 1 mmol of 1-hexadecyl-3-methylimidazole chloride and add 10 mL of absolute ethanol to make solution B. Add solution B dropwise to solution A, and stir rapidly. After the dropwise addition, continue stirring for 30 minutes, pour the above solution into a high-pressure reactor equipped with a polytetrafluoroethylene liner, and react at 140°C for 18 hours. The obtained product was centrifuged, washed three times with deionized water and absolute ethanol, and finally dried at 50°C.

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Abstract

The invention belongs to the field of catalysts, and particularly relates to a preparation method of an ultra-thin BiOCl nano-sheet. According to the method, the catalyst is synthesized by the aid of a hydrothermal method and takes chlorination 1-hexadecyl-3-methylimidazole as chlorine sources, so that the thickness of the prepared photocatalyst BiOCl nano-sheet is 2-3nm, the thickness of the photocatalyst BiOCl nano-sheet prepared by taking bismuth chloride as chlorine sources is 50nm, the thickness of the photocatalyst BiOCl nano-sheet prepared by taking sodium chloride as chlorine sources is 450nm, and the catalytic efficiency of photocatalytic degradation organic dye rhodamine B is high. The photocatalyst is synthesized by the aid of the hydrothermal method and simple to prepare, the preparation method is green and environmentally friendly, and different chlorine sources are selected, so that the thickness of the nano-sheets can be adjusted.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a method for preparing BiOCl ultrathin nanosheet photocatalysts. Background technique [0002] Energy crisis and environmental pollution are major problems that human beings are facing and need to be solved urgently, and these two problems are intertwined with each other. Energy pollutes the environment in the process of production and use, and the restoration of the environment must consume energy, so it seems to constitute a vicious circle that cannot be escaped. The solution to this magic ring is to use renewable, non-polluting, clean energy. The best way is to use solar light energy, but this way is not smooth, need to overcome the obstacle of low light energy utilization rate of human so far. This depends on the research progress of light energy conversion materials, that is, on the improvement of the material's absorption and conversion efficiency of sunlight. Since ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/10C02F1/30C02F101/34C02F101/36C02F101/38
CPCC02F1/30B01J27/10C02F2305/10C02F2101/38C02F2101/36C02F2101/34B01J35/39
Inventor 狄俊夏杰祥李华明季梦夏尹盛徐丽
Owner JIANGSU UNIV
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