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Multilevel structure bismuth sulfide, preparation method and application thereof

A technology of bismuth sulfide and reaction, applied in the direction of chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problem of inability to obtain bismuth sulfide multi-level structure with high specific surface area, no application effect reported in literature, etc. problem, to achieve the effect of improving catalytic performance, uniform size and regular shape

Inactive Publication Date: 2014-12-24
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the bismuth sulfide synthesized by the above-mentioned microwave method is in the shape of nanorods, and the bismuth sulfide hierarchical structure with high specific surface area cannot be obtained.
So far, there have been no literature reports on the synthesis of bismuth sulfide with hierarchical structure by microwave-ultrasonic combined method, nor have there been literature reports on the application effect of its catalytic degradation of chromium under visible light

Method used

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  • Multilevel structure bismuth sulfide, preparation method and application thereof
  • Multilevel structure bismuth sulfide, preparation method and application thereof
  • Multilevel structure bismuth sulfide, preparation method and application thereof

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Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of embodiment 1 multi-level structure bismuth sulfide, comprises the steps:

[0029] 1 mmol of bismuth nitrate pentahydrate and 1 mmol of 1-hexadecyl-3-methylimidazolium chloride ([C 16 MIMCl]) was dissolved in 50mL of ethanol (Ethanol), sonicated until completely dispersed. Then the reaction solution was placed in a microwave-ultrasonic combined reactor, the microwave power was set to 800W, the ultrasonic power was set to 1000W, and the reaction was carried out at a temperature of 180° C. for 10 minutes. Then 2 mmol thiourea was added into the reaction solution, and the reaction was continued for 15 min. After the reaction, the product was centrifuged and washed to remove residual solvent and excess organic matter on the surface, and finally dried at 60° C. for 24 hours to obtain a bismuth sulfide nanomaterial with a hierarchical structure. The specific surface area of ​​the sample is 29.00m 2 / g, the light absorption range covers 200-800nm. ...

Embodiment 2

[0031] The preparation method of embodiment 2 multi-level structure bismuth sulfide, comprises the steps:

[0032] Dissolve 1.5 mmol of bismuth nitrate pentahydrate and 1.5 mmol of 1-butyl-3-methylimidazolium chloride ([BMIMCl]) in 80 mL of ethylene glycol (EG), and sonicate until completely dispersed. Then the reaction solution was placed in a microwave-ultrasonic combined reactor, the microwave power was set to 500W, the ultrasonic power was set to 200W, and the reaction was carried out at a temperature of 180° C. for 20 minutes. Then 3 mmol thiourea was added into the reaction solution, and the reaction was continued for 10 min. After the reaction, the product was centrifuged and washed to remove residual solvent and excess organic matter on the surface, and finally dried at 60° C. for 24 hours to obtain a bismuth sulfide nanomaterial with a hierarchical structure. The specific surface area of ​​the sample is 31.10m 2 / g, the light absorption range covers 200-800nm.

[00...

Embodiment 3

[0035] The preparation method of embodiment 3 hierarchical structure bismuth sulfide, comprises the steps:

[0036] 0.5 mmol of bismuth nitrate pentahydrate and 0.5 mmol of 1-hexadecyl-3-methylimidazolium chloride ([C 16 MIMCl]) was dissolved in 20 mL of diethylene glycol (DEG), and sonicated until completely dispersed. Then the reaction solution was placed in a microwave-ultrasonic combined reactor, the microwave power was set to 1000W, the ultrasonic power was set to 800W, and the reaction was carried out at a temperature of 180° C. for 10 min. Then 1 mmol thiourea was added into the reaction solution, and the reaction was continued for 20 min. After the reaction, the product was centrifuged and washed to remove residual solvent and excess organic matter on the surface, and finally dried at 60° C. for 24 hours to obtain a bismuth sulfide nanomaterial with a hierarchical structure. The specific surface area of ​​the sample is 29.76m 2 / g, the light absorption range covers ...

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Abstract

The invention relates to a preparation method of a multilevel structure bismuth-containing nanometer material with a sonochemical method to obtain the multilevel structure bismuth sulfide with high specific surface area and wide light adsorption range. The preparation method comprises the following steps: adding bismuth nitrate pentahydrate and chlorine-containing ionic liquid to an organic solvent, conducting ultrasonic until all the compounds are uniformly dispersed, placing the obtained dispersion liquid in a microwave-ultrasonic wave combined reactor to take a reaction, adding thiourea in the reaction system to continue reaction, after reaction, centrifugally washing the product to remove the solvent remained on the surface and excessive organic matters, and drying the product to obtain the multilevel structure bismuth sulfide nanometer material. The preparation method of the multilevel structure bismuth-containing nanometer material has the benefits as follows: 1) the preparation method is quick in reaction rate, short in reaction time, high in product output and low in energy consumption; 2) the bismuth sulfide has the characteristics of regular morphology, uniform size, large specific surface area, wide light absorption range and the like; 3) the multilevel structure bismuth sulfide nanometer material obtained by the method disclosed by the invention has visible light response photocatalytic performance, and has better chromium photocatalytic degradation efficiency than the product titanium dioxide.

Description

technical field [0001] The invention belongs to the technical field of chemical engineering, functional materials, and photocatalytic material preparation, and specifically relates to a method for preparing multi-level structure bismuth-containing nanomaterials by sonochemical method to obtain multi-level structure vulcanization with high specific surface area and wide light absorption range bismuth. Background technique [0002] The rapid development of nanotechnology in recent years has made multifunctional nanomaterials widely used in various fields of academic research and industrial production. Due to its special physical and chemical properties, bismuth-based materials are widely used in various fields such as electronic ceramic materials, electrolyte materials, photoelectric materials, sensors, microelectronic components, high-temperature superconducting materials, catalysts, ferroelectric materials, etc., and are also used in chemical reagents, Bismuth salts, firepr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04C02F1/30C02F1/62
Inventor 陈嵘王润铭叶晨杨浩程刚
Owner WUHAN INSTITUTE OF TECHNOLOGY
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