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Preparation and application of t-Se rod supported BiOCl ultrathin sheet composite photocatalyst

A composite light and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of limiting the effective development of photocatalytic performance, good photodegradation ability, etc., and improve visible light absorption. The effect of uniform capacity, size, and easy operation

Active Publication Date: 2018-03-13
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these two heterojunctions have shown good photodegradation ability, BiOCl itself is not excited by visible light, which limits the effective development of its photocatalytic performance.

Method used

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  • Preparation and application of t-Se rod supported BiOCl ultrathin sheet composite photocatalyst
  • Preparation and application of t-Se rod supported BiOCl ultrathin sheet composite photocatalyst
  • Preparation and application of t-Se rod supported BiOCl ultrathin sheet composite photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of CdSe quantum dots:

[0035] First weigh 0.4567g of cadmium chloride (CdCl 2 2.5H 2 O) be dissolved in the there-necked flask that contains 200ml deionized water, logical N 2 Deoxygenate for half an hour; then add 230mL of stabilizer methacrylic acid, and adjust the pH of the solution to 7 with 1mol / L sodium hydroxide solution after stirring; at the same time, put 0.1053g of Se powder and 0.3160g of sodium borohydride In the beaker, add 7mL deionized water to dissolve completely, and pass N 2 Protect against oxidation until a white precipitate appears in the reaction, absorb the upper clear liquid, and add it dropwise to the above three-necked flask solution; condense and reflux, react in a water bath at 80°C for 4 hours, take it out and cool it naturally, centrifuge the solution, and use deionized water, anhydrous Wash with water and ethanol three times respectively, and dry in an oven at 60° C. for 6 hours to obtain CdSe quantum dots.

[0036] (2...

Embodiment 2

[0040] (1) Preparation of CdSe quantum dots:

[0041] First weigh 0.4567g of cadmium chloride (CdCl 2 2.5H 2 O) be dissolved in the there-necked flask that contains 200ml deionized water, logical N 2 Deoxygenate for half an hour; then add 230 μL of stabilizer methacrylic acid, and adjust the pH of the solution to 7 with 1mol / L sodium hydroxide solution after stirring; at the same time, put 0.1053g of Se powder and 0.3160g of sodium borohydride In the beaker, add 7mL deionized water to dissolve completely, and pass N 2 Protect against oxidation until a white precipitate appears in the reaction, absorb the upper clear liquid, and add it dropwise to the above three-necked flask solution; condense and reflux, react in a water bath at 80°C for 4 hours, take it out and cool it naturally, centrifuge the solution, and use deionized water, anhydrous Wash with water and ethanol three times respectively, and dry in an oven at 60° C. for 6 hours to obtain CdSe quantum dots.

[0042] (...

Embodiment 3

[0046] (1) Preparation of CdSe quantum dots:

[0047] First weigh 0.4567g of cadmium chloride (CdCl 2 2.5H 2 O) be dissolved in the there-necked flask that contains 200ml deionized water, logical N 2 Deoxygenate for half an hour; then add 230 μL of stabilizer methacrylic acid, and adjust the pH of the solution to 7 with 1mol / L sodium hydroxide solution after stirring; at the same time, put 0.1053g of Se powder and 0.3160g of sodium borohydride In the beaker, add 7mL deionized water to dissolve completely, and pass N 2 Protect against oxidation until a white precipitate appears in the reaction, absorb the upper clear liquid, and add it dropwise to the above three-necked flask solution; condense and reflux, react in a water bath at 80°C for 4 hours, take it out and cool it naturally, centrifuge the solution, and use deionized water, anhydrous Wash with water and ethanol three times respectively, and dry in an oven at 60° C. for 6 hours to obtain CdSe quantum dots.

[0048] (...

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Abstract

The invention discloses a preparation method of a t-Se rod supported BiOCl ultrathin nanosheet composite photocatalyst, and belongs to the technical field of environmental material preparation. The method comprises the following specific steps of: adding cadmium chloride and methacrylic acid into deionized water serving as a solvent, adjusting the pH value of the solution after stirring, injectingsupernatant liquid obtained after dissolving selenium powder and sodium borohydride in deionized water, introducing nitrogen, pouring the solution into a three-neck flask for heating, naturally cooling the solution, and carrying out centrifuging, washing and drying to obtain CdSe quantum dots; and mixing a BiOCl precursor solution and the CdSe quantum dots in a mannitol solution with stirring, pouring the mixture into a reaction kettle, naturally cooling the mixture to room temperature after hydrothermal reaction for a certain period of time, opening the kettle, carrying out centrifugal washing and drying, and carrying out drying to obtain a composite photocatalyst. The composite photocatalyst provided by the invention can effectively utilize visible light to degrade tetracycline hydrochloride in antibiotic wastewater, is simple and convenient to operate, and is a green and environment-friendly high-efficiency treatment technology.

Description

technical field [0001] The invention belongs to the technical field of environmental material preparation, and in particular relates to the preparation and application of t-Se rod-loaded BiOCl ultrathin sheet composite photocatalysts. Background technique [0002] Tetracycline antibiotics, as a class of broad-spectrum antibiotics named for having the same chemical structure, have a good effect on the treatment of livestock bacterial diarrhea and respiratory diseases of livestock and poultry, and can promote growth, increase Egg production and promote milk secretion. However, as people's understanding of antibiotics has deepened, their use in animal and food production has been widely questioned. It is found that the resistance of bacteria in this application is also significantly improved, and it is easy to cause double infection, allergic reaction, affect the growth of teeth and bones, and damage the liver and other adverse reactions, which have directly affected the ecolo...

Claims

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Application Information

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IPC IPC(8): B01J27/06B01J35/02C02F1/30C02F101/38
CPCC02F1/30B01J27/06C02F2101/38C02F2305/10B01J35/40B01J35/39
Inventor 黄海马长畅朱志汪涛姚鑫于洋闫永胜
Owner JIANGSU UNIV
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