Solvothermal preparation method of bismuth trioxide microspheres and application thereof

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

Active Publication Date: 2015-02-04
JIANGSU UNIV
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  • 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

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A 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, dissolved in 5 mL of ethylene glycol solution with ultrasonic stirring to form a bismuth nitrate solution;

[0032] B. Weigh 0.1 mmoL In(NO 3 ) 3 4.5H 2 O and 0.1mmoL urea were dissolved in 5 mL of absolute ethanol solution with magnetic stirring to form a mixed solution of indium nitrate and urea;

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

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

[0035] E. Centrifuge the solvothermal product obtained in step D, wash with deionized water and absolute ethanol three times respectively, and dry the centrifuged product in air at 60°...

Embodiment 2

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

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

[0046] B. Weigh 1.0 mmoL In(NO 3 ) 3 4.5H 2 O and 1.0mmoL urea were dissolved in 30 mL of absolute ethanol solution with magnetic stirring to form a mixed solution of indium nitrate and urea;

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

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

[0049] E. Centrifuge the solvothermal product obtained in step D, wash with deionized water and absolute ethanol three times respectively, and dry the centrifuged product in air at 6...

Embodiment 3

[0052] A 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, dissolved in 5 mL of ethylene glycol solution with ultrasonic stirring to form a bismuth nitrate solution;

[0054] B. Weigh 0.1 mmoL In(NO 3 ) 3 4.5H 2 O and 1.0mmoL urea were dissolved in 30 mL of absolute ethanol solution with magnetic stirring to form a mixed solution of indium nitrate and urea;

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

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

[0057] E. Centrifuge the solvothermal product obtained in step D, wash with deionized water and absolute ethanol three times respectively, and dry the centrifuged product in air at 60...

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Abstract

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. A solvothermal method for preparing bismuth trioxide microspheres. The technical scheme is to dissolve soluble bismuth salts in ethylene glycol, soluble indium salts and urea in absolute ethanol, and mix them uniformly with ultrasonic stirring, then undergo solvothermal reaction The precursor is obtained, and the precursor is prepared by high-temperature roasting after being centrifugally washed and dried. Bismuth trioxide (Bi2O3) microspheres with relatively uniform morphology were prepared by solvothermal reaction by liquid phase method at low temperature. Applying the bismuth trioxide microspheres prepared by the above method to the photodegradation of tetracycline-containing wastewater has the advantages of good chemical stability and the like. The invention has simple process and good reproducibility, and the raw materials used meet the requirements of environmental friendliness and are convenient for batch production.

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 Patents(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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