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A kind of preparation method of cds-cus nanocomposite photocatalyst

A nano-composite, photocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of large particle size, expensive raw materials, time required for reaction, and low product purity. To achieve the effect of simple operation, prevention of compounding, and environmental friendliness

Active Publication Date: 2020-04-07
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the product purity of the solid-phase thermal decomposition method is not high, and the particle size is large; the raw materials used in the sol-gel method are relatively expensive and the reaction takes a long time; the template method has some limitations due to the matrix material.

Method used

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  • A kind of preparation method of cds-cus nanocomposite photocatalyst
  • A kind of preparation method of cds-cus nanocomposite photocatalyst
  • A kind of preparation method of cds-cus nanocomposite photocatalyst

Examples

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Effect test

Embodiment 1

[0028] A preparation method of CdS-CuS nanocomposite photocatalyst, adding 0.44 g of cadmium mercaptobenzothiazolate into a 250 mL three-neck flask filled with 45 mL of oleic acid, and heating to 220 ° C under continuous magnetic stirring to dissolve the solid , continue heating to 300°C for constant temperature reaction for 5 minutes to complete thermal decomposition of the complex, stop heating; after cooling, centrifuge the product, take the obtained solid, wash the product with ethanol and centrifuge to remove by-products and impurities, and dissolve the obtained solid product in 20mL sodium sulfide saturated aqueous solution, the mass volume ratio of solid product and sodium sulfide saturated aqueous solution is 3.72g: 20mL, the water bath is heated to 65 ℃ while magnetic sub-stirring, and then the constant temperature heating is continued for 5min; The gained solution is centrifuged and washed with deionized water, and then Dissolve the obtained solid in deionized water, ...

Embodiment 2

[0030] A preparation method of CdS-CuS nanocomposite photocatalyst, adding 0.44 g of cadmium mercaptobenzothiazolate into a 250 mL three-neck flask filled with 45 mL of oleic acid, and heating to 220 ° C under continuous magnetic stirring to dissolve the solid , continue heating to 300°C for constant temperature reaction for 10 minutes to complete thermal decomposition of the complex, stop heating; after cooling, centrifuge the product, and take the obtained solid, wash the product with ethanol and centrifuge to remove by-products and impurities, and dissolve the obtained solid product in 20mL sodium sulfide saturated aqueous solution, the mass volume ratio of solid product and sodium sulfide saturated aqueous solution is 3.72g: 20mL, the water bath is heated to 65 ℃ while magnetic sub-stirring, and then the constant temperature heating is continued for 10min; The gained solution is centrifuged and washed with deionized water, and then Dissolve the resulting solid in deionized ...

Embodiment 3

[0032] A preparation method of CdS-CuS nanocomposite photocatalyst, adding 0.44 g of cadmium mercaptobenzothiazolate into a 250 mL three-neck flask filled with 45 mL of oleic acid, and heating to 220 ° C under continuous magnetic stirring to dissolve the solid , continue heating to 300°C for constant temperature reaction for 5 minutes to complete thermal decomposition of the complex, stop heating; after cooling, centrifuge the product, take the obtained solid, wash the product with ethanol and centrifuge to remove by-products and impurities, and dissolve the obtained solid product in 20mL sodium sulfide saturated aqueous solution, the mass volume ratio of solid product and sodium sulfide saturated aqueous solution is 3.72g: 20mL, the water bath is heated to 65 ℃ while magnetic sub-stirring, and then the constant temperature heating is continued for 5min; The gained solution is centrifuged and washed with deionized water, and then Dissolve the resulting solid in deionized water,...

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Abstract

The invention discloses a method for preparing a CdS-CuS nanocomposite photocatalyst. Cadmium mercaptobenzothiazole is used as a precursor, and cadmium sulfide is obtained through liquid phase thermal decomposition. Cadmium sulfide is used as the core and sulfide is sulfated through ion adsorption. Copper is attached to the surface of cadmium sulfide to obtain a CdS-CuS nanocomposite photocatalyst; the method is simple to operate, environmentally friendly, and obtains a composite metal sulfide with uniform nanoparticle morphology, controllable size and atomic ratio, and the particles are between 10-20 nm. time; it can effectively absorb ultraviolet light and visible light, and has a significant degradation effect on organic pollutants such as rhodamine B and methylene blue; it effectively prevents the recombination of photogenerated electrons and holes, and improves its photocatalytic water splitting efficiency.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, in particular to a preparation method of a CdS-CuS nanocomposite photocatalyst. Background technique [0002] With the rapid development of society, environmental pollution and energy shortage have become two major challenges facing the sustainable development of human beings. As a clean, cheap and renewable energy, the development of solar energy has become the key to solve the increasingly prominent energy and environmental problems. Photocatalytic technology has attracted more and more attention because of its applications in photolysis of water to produce hydrogen, self-cleaning surface technology, and photocatalytic degradation of organic compounds. with TiO 2 The representative traditional photocatalyst can only respond to ultraviolet light and near ultraviolet light because of its narrow band gap (3.2eV), and has a low utilization rate of solar energy (about 5%), which greatl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/04
CPCB01J27/04B01J35/39
Inventor 张克杰李旺李明隆黄楠谢旺旺杜雨泓周志萍
Owner NANJING INST OF TECH