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Solvothermal preparation method of bismuth trioxide microspheres and application thereof

A bismuth trioxide, solvothermal technology, applied in metal/metal oxide/metal hydroxide catalysts, inorganic chemistry, bismuth compounds, etc., can solve the problem of high antibiotic content, antibiotic screening and production, strain breeding Technical difficulties, environmental pollution and other problems, to achieve the effect of high degradation efficiency, low cost and good chemical stability

Active Publication Date: 2013-12-04
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, antibiotics are widely used in the control of infectious diseases and the prevention and treatment of poultry, livestock, crops and other diseases. However, there are still technical difficulties in the screening and production of antibiotics, strain selection, etc., resulting in problems such as high residual antibiotic content in wastewater. , causing great pollution to the environment

Method used

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  • Solvothermal preparation method of bismuth trioxide microspheres and application thereof
  • Solvothermal preparation method of bismuth trioxide microspheres and application thereof
  • Solvothermal preparation method of bismuth trioxide microspheres and application thereof

Examples

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Effect test

Embodiment 1

[0030] A kind of bismuth trioxide (Bi 2 O 3 ) The preparation method of microspheres is carried out according to the following steps:

[0031] A. Weigh 0.5 mmoL of Bi(NO 3 ) 3 · 5H 2 O, dissolve in 5 mL ethylene glycol solution under ultrasonic stirring to form bismuth nitrate solution;

[0032] B. Weigh 0.1 mmoL In(NO 3 ) 3 · 4.5H 2 O and 0.1mmoL urea, magnetically stirred to dissolve them in 5 mL of absolute ethanol solution to form a mixed solution of indium nitrate and urea;

[0033] C. Add the solution of step B to the solution of step A, and then magnetically stir for 30 min;

[0034] D. Transfer the mixed system obtained in step C to a reaction kettle lined with polytetrafluoroethylene, raise the temperature to 180°C for 24 hours, and cool it naturally to obtain a solvothermal product;

[0035] E. Centrifuge the solvothermal product obtained in step D, wash it with deionized water and absolute ethanol three times, and dry the product after centrifugation in air at 60°C for 6 ho...

Embodiment 2

[0044] A kind of bismuth trioxide (Bi 2 O 3 ) The preparation method of microspheres is carried out according to the following steps:

[0045] A. Weigh out 5.0 mmoL of Bi(NO 3 ) 3 · 5H 2 O, dissolve in 30 mL ethylene glycol solution with ultrasonic stirring to form bismuth nitrate solution;

[0046] B. Weigh 1.0 mmoL In(NO 3 ) 3 · 4.5H 2 O and 1.0mmoL urea, magnetically stirred to dissolve them in 30 mL of absolute ethanol solution to form a mixed solution of indium nitrate and urea;

[0047] C. Add the solution of step B to the solution of step A, and then magnetically stir for 30 min;

[0048] D. Transfer the mixed system obtained in step C to a reaction kettle lined with polytetrafluoroethylene, raise the temperature to 100°C for 24 hours, and cool it naturally to obtain a solvothermal product;

[0049] E. Centrifuge the solvothermal product obtained in step D, wash it with deionized water and absolute ethanol three times, and dry the product after centrifugation in air at 60°C for...

Embodiment 3

[0052] A kind of bismuth trioxide (Bi 2 O 3 ) The preparation method of microspheres is carried out according to the following steps:

[0053] A. Weigh 0.5 mmoL of Bi(NO 3 ) 3 · 5H 2 O, dissolve in 5 mL ethylene glycol solution under ultrasonic stirring to form bismuth nitrate solution;

[0054] B. Weigh 0.1 mmoL In(NO 3 ) 3 · 4.5H 2 O and 1.0mmoL urea, magnetically stirred to dissolve them in 30 mL of absolute ethanol solution to form a mixed solution of indium nitrate and urea;

[0055] C. Add the solution of step B to the solution of step A, and then magnetically stir for 30 min;

[0056] D. Transfer the mixed system obtained in step C to a reaction kettle lined with polytetrafluoroethylene, raise the temperature to 120°C at a constant temperature for 24 hours, and cool it naturally to obtain a solvothermal product;

[0057] E. Centrifuge the solvothermal product obtained in step D, wash it with deionized water and absolute ethanol three times, and dry the product after centrifugat...

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Abstract

The invention belongs to the technical field of preparation of inorganic nanomaterials and environmental materials, and relates to a solvothermal preparation method of bismuth trioxide microspheres and application thereof. The solvothermal preparation method of the bismuth trioxide microspheres adopts the technical steps as follows: dissolving soluble bismuth salt into ethylene glycol and dissolving soluble indium salt and urea into ethanol respectively; performing ultrasonic agitation and uniformly mixing, and obtaining a precursor through solvothermal reaction; centrifugally washing and drying the precursor, and roasting the precursor at high temperature to prepare the bismuth trioxide microspheres. The bismuth oxide (Bi2O3) microspheres with relatively uniform morphology are prepared at a low temperature through the solvothermal reaction by a liquid-phase method, the morphology thereof is a microspherical structure, and the diameter thereof is about 1-2 microns. When the bismuth trioxide microspheres prepared according to the solvothermal preparation method method can be applied to optical degradation of tetracycline-containing wastewater, and have the advantages of high chemical stability and the like. The solvothermal preparation method is simple in process and high in repeatability; used raw materials meet environment-friendly requirements; and by the solvothermal preparation method, mass production can be facilitated.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic nanometer materials and environmental materials, and relates to a method for preparing bismuth trioxide microspheres, in particular to a solvothermal method for preparing bismuth trioxide microspheres and its application. Background technique [0002] At present, antibiotics are widely used in the control of infectious diseases and the prevention and treatment of poultry, livestock, crops and other diseases. However, there are still technical difficulties in the screening and production of antibiotics, strain selection, etc., resulting in problems such as high residual antibiotic content in wastewater. , causing great pollution to the environment. Therefore, the removal of antibiotic substances represented by tetracycline has become a scientific research problem to be solved urgently. [0003] Bismuth trioxide is an important class of p-type semiconductor materials. There are mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G29/00C02F1/30B01J23/18
Inventor 施伟东张格红关卫省张宪张中杰
Owner JIANGSU UNIV
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