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Preparation method of novel bismuth sulfide nanorods

A technology of bismuth sulfide and nanorods, applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve the problems that hinder the large-scale application of titanium dioxide, low quantum efficiency, etc., achieve improved catalytic effect, simple preparation process, and reduce usage cost effect

Inactive Publication Date: 2013-05-08
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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AI Technical Summary

Problems solved by technology

Titanium dioxide (TiO 2 ) has become the most widely used photocatalytic material because of its non-toxic, cheap and good stability, but its wide band gap and low quantum efficiency (less than 5%) have seriously hindered the use of titanium dioxide in the field of environmental protection. scale application
At present, no literature has reported the preparation of pure bismuth sulfide nanorod semiconductor photocatalysts with strong visible and ultraviolet photocatalytic activity.

Method used

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  • Preparation method of novel bismuth sulfide nanorods
  • Preparation method of novel bismuth sulfide nanorods
  • Preparation method of novel bismuth sulfide nanorods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A, take by weighing 0.465g bismuth nitrate (Bi(NO 3 ) 3 ·5H 2 O), it was added to 194mL of methanol, stirred continuously, then 1.6g of concentrated hydrochloric acid (HCl) was added, and 0.307g of glutathione (GSH) was added to the clarified solution to obtain a transparent solution;

[0035] B. Transfer the above mixed solution to a high-pressure reactor, heat it to 150°C under the protection of 1MPa nitrogen, keep it for 30min, then raise the temperature to 240°C and keep it for 1h;

[0036] C. Finally, the solvent was discharged by supercritical drying and cooled to 20-25° C., and the bismuth sulfide nanorods were taken out. The quality of the obtained product was 0.51 g, and the yield was 99.81%.

[0037] The methanol in the test is analytically pure, with a high content of main components, high purity, and low interfering impurities, which is suitable for industrial analysis and chemical experiments.

Embodiment 2

[0039] A, take by weighing 0.465g bismuth nitrate (Bi(NO 3 ) 3 ·5H 2 O), it was added to 200mL of methanol, stirred continuously, then 1.6g of concentrated hydrochloric acid (HCl) was added, and 0.307g of glutathione (GSH) was added to the clarified solution to obtain a transparent solution;

[0040] B. Transfer the above mixed solution to a high-pressure reactor, heat it to 150°C under the protection of 1MPa nitrogen, keep it for 45min, then raise the temperature to 240°C and keep it for 2h;

[0041] C. Finally, the solvent was discharged by supercritical drying and cooled to 20-25° C., and the bismuth sulfide nanorods were taken out. The quality of the obtained product was 0.48 g, and the yield was 99.1%.

[0042] The methanol in the test is analytically pure, with a high content of main components, high purity, and low interfering impurities, which is suitable for industrial analysis and chemical experiments.

Embodiment 3

[0044] A, take by weighing 0.465g bismuth nitrate (Bi(NO 3 ) 3 ·5H 2 O), it was added to 200mL ethanol, stirred continuously, then 1.6g concentrated hydrochloric acid (HCl) was added, and 0.307g glutathione (GSH) was added to the clarified solution to obtain a transparent solution;

[0045] B. Transfer the above mixed solution to a high-pressure reactor, heat it to 150°C under the protection of 1MPa nitrogen, keep it for 60min, then raise the temperature to 240°C and keep it for 3h;

[0046] C. Finally, discharge the solvent through supercritical drying and cool to 20-25° C., then take out the bismuth sulfide nanorods. The quality of the obtained product is 0.50 g, and the yield is 99.5%.

[0047] The ethanol in the test is analytically pure, with a high content of main components, high purity, and low interfering impurities, and is suitable for industrial analysis and chemical experiments.

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Abstract

The invention discloses a preparation method of novel bismuth sulfide nanorods. The preparation method comprises the following steps of: taking bismuth nitrate and glutathione as starting reactants, adopting an alcohol with smaller molecular weight, such as methanol or ethanol as a reaction reagent, performing complete reaction under supercritical conditions of the solvent, then directly discharging the solvent and drying products, namely performing one-step synthesis to obtain bismuth sulfide semiconductor nanorods through a hydro-thermal synthesis method. The method has the advantages of high yield and low cost, the photocatalytic activity of the obtained products is high, and the method has great industrialized application prospects.

Description

technical field [0001] The method of the invention relates to the field of preparation of inorganic nanometer materials, in particular to a preparation method of a novel nanomaterial bismuth sulfide nanorod which has photocatalytic activity and is especially suitable for photocatalytic degradation of organic dye pollutants. Background technique [0002] With the development of society and the progress of science and technology, the problem of environmental pollution is becoming more and more serious. How to effectively control and eliminate these pollutions has become an important issue for the sustainable development of the world economy. At present, semiconductor photocatalytic materials have aroused widespread interest in the scientific and technological community in terms of environmental governance and energy development. Titanium dioxide (TiO 2 ) has become the most widely used photocatalytic material because of its non-toxic, cheap and good stability, but its wide ba...

Claims

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Application Information

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IPC IPC(8): C01G29/00B01J27/04B82Y30/00B82Y40/00
CPCY02P20/544Y02P20/54
Inventor 罗勇锋李羲陈洪龚志强王新军彭小芳
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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