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Preparation method and application of cdse quantum dot/bi12tio20 composite photocatalyst

A technology of quantum dots and composite light, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., to achieve the effects of green environmental protection processing technology, high-efficiency processing technology, and easy operation

Inactive Publication Date: 2019-06-28
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bi 12 TiO 20 The research on photocatalytic performance has not yet formed a system, but some researchers have begun to study Bi 12 TiO 20 Research on the modification of

Method used

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  • Preparation method and application of cdse quantum dot/bi12tio20 composite photocatalyst
  • Preparation method and application of cdse quantum dot/bi12tio20 composite photocatalyst
  • Preparation method and application of cdse quantum dot/bi12tio20 composite photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Bi 12 TiO 20 Preparation of photocatalyst:

[0030]Weigh 2.06g of bismuth nitrate and 0.12mL of tetrabutyl titanate into a small beaker, add deionized water to make it fully dissolved, magnetic stirring assists the reaction, adjust KOH to pH=14, and ultrasonically make it more dispersed uniform. Pour it into a high-pressure reactor and heat it in an oven, take it out and cool it naturally, centrifuge the solution, wash it with deionized water for 3 times, put it into a drying oven to dry, and obtain Bi 12 TiO 20 catalyst of light.

[0031] (2) Preparation of NaHSe precursor solution:

[0032] Weigh 0.0011mol of Se powder and 0.015mol of NaBH 4 Put it into a glass reaction bottle, add deionized water, magnetic stirring assists the reaction, and pass N through the whole reaction. 2 Protect until a white precipitate appears in the reaction, draw the supernatant liquid, which is the NaHSe precursor.

[0033] (3) CdSe quantum dots / Bi 12 TiO 20 Preparation of co...

Embodiment 2

[0037] (1) Bi 12 TiO 20 Preparation of photocatalyst:

[0038] Weigh 2.06g of bismuth nitrate and 0.12mL of tetrabutyl titanate into a small beaker, add deionized water to make it fully dissolved, magnetic stirring assists the reaction, adjust KOH to pH = 14, and ultrasonically make it more dispersed uniform. Pour it into a high-pressure reactor and heat it in an oven, take it out and cool it naturally, centrifuge the solution, wash it with deionized water for 3 times, put it into a drying oven to dry, and obtain Bi 12 TiO 20 catalyst of light.

[0039] (2) Preparation of NaHSe precursor solution:

[0040] Weigh 0.0011mol of Se powder and 0.015mol of NaBH 4 Put it into a glass reaction bottle, add deionized water, magnetic stirring assists the reaction, and pass N through the whole reaction. 2 Protect until a white precipitate appears in the reaction, draw the supernatant liquid, which is the NaHSe precursor.

[0041] (3) CdSe quantum dots / Bi 12 TiO 20 Preparation of...

Embodiment 3

[0045] (1) Bi 12 TiO 20 Preparation of photocatalyst:

[0046] Weigh 2.06g of bismuth nitrate and 0.12mL of tetrabutyl titanate into a small beaker, add deionized water to make it fully dissolved, magnetic stirring assists the reaction, adjust KOH to pH = 14, and ultrasonically make it more dispersed uniform. Pour it into a high-pressure reactor and heat it in an oven, take it out and cool it naturally, centrifuge the solution, wash it with deionized water for 3 times, put it into a drying oven to dry, and obtain Bi 12 TiO 20 catalyst of light.

[0047] (2) Preparation of NaHSe precursor solution:

[0048] Weigh 0.0011mol of Se powder and 0.015mol of NaBH 4 Put it into a glass reaction bottle, add deionized water, magnetic stirring assists the reaction, and pass N through the whole reaction. 2 Protect until a white precipitate appears in the reaction, draw the supernatant liquid, which is the NaHSe precursor.

[0049] (3) CdSe quantum dots / Bi 12 TiO 20 Preparation of...

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Abstract

The invention belongs to the technical field of environmental material preparation and relates to a preparation method and use of a CdSe quantum dot / Bi12TiO20 composite photocatalyst through hydrothermal synthesis. The preparation method comprises preparation of a Bi12TiO20 photocatalyst and preparation of the CdSe quantum dot / Bi12TiO20 composite photocatalyst. The method comprises adding cadmium chloride, Bi12TiO20 and a stabilizer in deionized water as a solvent, carrying out full stirring, adjusting the pH value of the solution, pouring a NaHSe precursor solution into the mixture, feeding nitrogen gas into the mixture, pouring the solution into a high pressure reactor, heating the solution, taking out the solution, carrying out natural cooling, centrifugation and washing, putting the product into an oven and carrying out drying to obtain the CdSe quantum dot / Bi12TiO20 composite photocatalyst. The CdSe quantum dot / Bi12TiO20 composite photocatalyst can effectively utilize the visible light to degrade tetracycline in the antibiotic wastewater.

Description

technical field [0001] The invention belongs to the technical field of environmental material preparation, and relates to the preparation and application of CdSe quantum dot-loaded photocatalysts. Background technique [0002] Antibiotics refer to a class of substances with anti-pathogenic or other activities produced by bacteria, molds or other microorganisms in the course of life. Antibiotics can basically be divided into two categories, one is to inhibit the growth of pathogens, and the other is to directly kill pathogens. Antibiotics are used to treat most bacterial infections. In addition to anti-infection, some antibiotics also have anti-tumor activity and are used in the chemotherapy of tumors; some antibiotics also have immunosuppressive and plant growth-stimulating effects. Antibiotics are not only used in medicine, but also in agriculture, animal husbandry and food industry (antibiotics for non-therapeutic use in animal husbandry are called growth promoters). Ho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/057C02F1/30
CPCB01J27/0573B01J35/004C02F1/30C02F2305/10
Inventor 汪涛马长畅刘锡清姚鑫吴旦闫永胜霍鹏伟
Owner JIANGSU UNIV
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