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A composite photocatalyst for efficiently degrading ciprofloxacin and its preparation method and application

A ciprofloxacin and catalyst technology, applied in the field of photocatalysis, can solve the problems of limiting the photocatalytic performance of bismuth oxybromide photocatalyst, the inability to improve the conduction band position of bismuth oxybromide, and poor stability of photocatalytic performance, so as to achieve enhanced photocatalysis Redox ability, strong photocatalytic redox ability, and wide light absorption range

Active Publication Date: 2022-05-17
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these traditional modification methods usually cannot improve the conduction band position of bismuth oxybromide, because the photogenerated electrons of the bismuth oxybromide photocatalyst cannot convert oxygen (O 2 ) into superoxide radicals (O 2 - ), thus severely limiting the photocatalytic performance of the modified bismuth oxybromide photocatalyst
Therefore, how to comprehensively improve the problems of bismuth oxybromide photogenerated electron-hole pair recombination rate, low light absorption efficiency, low conduction band position, poor photocatalytic activity, and poor stability of photocatalytic performance are technical problems that need to be solved urgently in this field.

Method used

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  • A composite photocatalyst for efficiently degrading ciprofloxacin and its preparation method and application
  • A composite photocatalyst for efficiently degrading ciprofloxacin and its preparation method and application
  • A composite photocatalyst for efficiently degrading ciprofloxacin and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] An indium vanadate modified bismuth oxybromide composite photocatalyst uses bismuth oxybromide as a carrier, and the bismuth oxybromide is decorated with indium vanadate.

[0069] In this embodiment, the mass fraction of indium vanadate in the indium vanadate-modified bismuth oxybromide composite photocatalyst is 10%.

[0070] In this embodiment, the indium vanadate-modified bismuth oxybromide composite photocatalyst is a spherical material with a diameter of 2 μm to 4 μm.

[0071] In this embodiment, the bismuth oxybromide is composed of bismuth oxybromide nanosheets and has a spherical structure.

[0072] In this embodiment, the diameter of the indium vanadate is 200nm-500nm.

[0073] The preparation method of the indium vanadate modified bismuth oxybromide composite photocatalyst of the above-mentioned present embodiment comprises the following steps:

[0074] (1) Preparation of indium vanadate

[0075] (1.1) Mix 1 mmol of indium nitrate, 200 mg of polyvinylpyrrol...

Embodiment 2

[0099] An indium vanadate modified bismuth oxybromide composite photocatalyst uses bismuth oxybromide as a carrier, and the bismuth oxybromide is decorated with indium vanadate.

[0100] In this embodiment, the mass fraction of indium vanadate in the indium vanadate-modified bismuth oxybromide composite photocatalyst is 20%.

[0101] In this embodiment, the indium vanadate-modified bismuth oxybromide composite photocatalyst is a spherical material with a diameter of 2 μm to 4 μm.

[0102] In this embodiment, the bismuth oxybromide is composed of bismuth oxybromide nanosheets and has a spherical structure.

[0103] In this embodiment, the diameter of the indium vanadate is 200nm-500nm.

[0104] The preparation method of the indium vanadate modified bismuth oxybromide composite photocatalyst of the above-mentioned present embodiment comprises the following steps:

[0105] (1) Preparation of indium vanadate

[0106] (1.1) Mix 1 mmol of indium nitrate, 200 mg of polyvinylpyrrol...

Embodiment 3

[0117] An indium vanadate modified bismuth oxybromide composite photocatalyst uses bismuth oxybromide as a carrier, and the bismuth oxybromide is decorated with indium vanadate.

[0118] In this embodiment, the mass fraction of indium vanadate in the indium vanadate-modified bismuth oxybromide composite photocatalyst is 30%.

[0119] In this embodiment, the indium vanadate-modified bismuth oxybromide composite photocatalyst is a spherical material with a diameter of 2 μm to 4 μm.

[0120] In this embodiment, the bismuth oxybromide is composed of bismuth oxybromide nanosheets and has a spherical structure.

[0121] In this embodiment, the diameter of the indium vanadate is 200nm-500nm.

[0122] The preparation method of the indium vanadate modified bismuth oxybromide composite photocatalyst of the above-mentioned present embodiment comprises the following steps:

[0123] (1) Preparation of indium vanadate

[0124] (1.1) Mix 1 mmol of indium nitrate, 200 mg of polyvinylpyrrol...

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Abstract

The invention "a composite photocatalyst for efficiently degrading ciprofloxacin and its preparation method and application" belongs to the technical field of photocatalysis. The composite photocatalyst is an indium vanadate modified bismuth oxybromide composite photocatalyst, which uses bismuth oxybromide as a carrier, and the bismuth oxybromide is modified with indium vanadate. The composite photocatalyst of the present invention has the advantages of environmental protection, high photogenerated electron-hole separation efficiency, high light absorption efficiency, strong photocatalytic redox ability, good stability of photocatalytic performance, good reusability, etc., and its preparation method has a preparation process It has the advantages of simplicity, easy control of operating conditions, simple and easy-to-obtain raw materials, and low preparation cost. The composite photocatalyst of the invention can be used to degrade antibiotic waste water, has the advantages of simple application method, high degradation efficiency and good reusability, and has good practical application prospect.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, and relates to a composite photocatalyst for efficiently degrading ciprofloxacin, a preparation method and application thereof. Background technique [0002] With the development of modern industry, the problems of energy crisis and environmental pollution are becoming more and more serious. Among them, energy shortage and environmental degradation are major problems that human beings face in the 21st century and need to be solved urgently. Therefore, new energy utilization and environmental pollution control are of great significance to the national sustainable development strategy. Semiconductor heterogeneous photocatalytic technology is considered to be a promising technology for deep purification of environmental pollution because it can completely catalyze and degrade various organic and inorganic substances in polluted air and wastewater, in terms of energy storage, conversion and en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/06B01J35/02B01J35/08C02F1/30C02F101/38B01J35/00
CPCB01J27/06C02F1/30C02F2305/10C02F2101/38C02F2305/023B01J35/40B01J35/51B01J35/39Y02W10/37
Inventor 袁兴中熊婷蒋龙波于瀚博张进陈浩云
Owner HUNAN UNIV
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