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CuInS2 quantum dot/rGO composite photocatalytic material and application thereof

A composite photocatalysis and quantum dot technology, which can be used in luminescent materials, physical/chemical process catalysts, nano-optics, etc., and can solve the problems of photocatalytic performance inhibition and quantum dot stability reduction.

Inactive Publication Date: 2018-06-22
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the photocorrosion phenomenon of quantum dots, its photocatalytic performance is severely inhibited, and the stability of quantum dots is greatly reduced.

Method used

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  • CuInS2 quantum dot/rGO composite photocatalytic material and application thereof
  • CuInS2 quantum dot/rGO composite photocatalytic material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1)CuInS 2 Preparation:

[0025] Weigh 0.438g In(Ac) 3 (Indium acetate), 0.285g CuI (cuprous iodide) and 5mL dodecanethiol (DDT) are mixed in a three-necked flask, heated to 210℃ in an oil bath, and heated continuously under an argon protective atmosphere. After the reactant solution turns black, immediately immerse the three-necked flask in cold water at 20°C for 5 min. The obtained sample is washed with toluene / methanol three times, and the solid obtained after being lyophilized in a freeze dryer for 24 hours is CuInS. 2 .

[0026] (2)CuInS 2 / rGO composite photocatalyst preparation:

[0027] Put 0.8g CuInS prepared in step (1) 2 Dissolve in methanol, then add 0.4g GO powder, then pour the system into an autoclave and heat it in an oven at 200°C, continue the reaction for 1 hour, take it out to cool naturally, centrifuge the solution, and wash it with deionized water and methanol for 3 times. Dry in a drying oven at 70℃ to obtain CuInS 2 / rGO composite photocatalyst.

[0028...

Embodiment 2

[0030] (1)CuInS 2 Preparation:

[0031] Weigh 0.438g In(Ac) 3 (Indium acetate), 0.285g CuI (cuprous iodide) and 7.5mL dodecanethiol (DDT) were mixed in a three-necked flask, put in an oil bath and heated to 210℃, and heated continuously under an argon atmosphere After the reactant solution turns black, immediately immerse the three-necked flask in cold water at 20°C and cool for 5 min. The obtained sample is washed with toluene / methanol 3 times, and the solid obtained after being lyophilized in a freeze dryer for 24 hours is CuInS 2 .

[0032] (2)CuInS 2 / rGO composite photocatalyst preparation:

[0033] Put 0.8g CuInS prepared in step (1) 2 Dissolve in methanol, then add 0.4g GO powder, then pour the system into an autoclave and heat it in an oven at 200°C, continue the reaction for 1 hour, take it out to cool naturally, centrifuge the solution, and wash it with deionized water and methanol for 3 times. Dry in a drying oven at 70℃ to obtain CuInS 2 / rGO composite photocatalyst.

[...

Embodiment 3

[0036] (1)CuInS 2 Preparation:

[0037] Weigh 0.438g In(Ac) 3 (Indium acetate), 0.285g CuI (cuprous iodide) and 10mL dodecanethiol (DDT) were mixed in a three-necked flask, heated to 210℃ in an oil bath, and heated continuously under an argon protective atmosphere. After the reactant solution turns black, immediately immerse the three-necked flask in cold water at 20°C for 5 min. The obtained sample is washed with toluene / methanol three times, and the solid obtained after being lyophilized in a freeze dryer for 24 hours is CuInS. 2 .

[0038] (2)CuInS 2 / rGO composite photocatalyst preparation:

[0039] Put 0.8g CuInS prepared in step (1) 2 Dissolve in methanol, then add 0.4g GO powder, then pour the system into an autoclave and heat it in an oven at 200°C, continue the reaction for 1 hour, take it out to cool naturally, centrifuge the solution, and wash it with deionized water and methanol for 3 times. Dry in a drying oven at 70℃ to obtain CuInS 2 / rGO composite photocatalyst.

[00...

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PUM

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Abstract

The invention relates to a composite photocatalyst by utilizing a CuInS2 quantum dot to load reduced graphene oxide (rGO) and an application thereof, belonging to the technical field of preparation ofenvironmental protection materials. According to the invention, a CuInS2 semiconductor material used as a photocatalyst is excited under visible light to realize special catalysis or conversion through an interface interaction effect with pollutant molecules, and surrounding oxygen and water molecules are excited into strong-oxidizability substances like oxygen free radicals with oxidizing forceand hydroxyl radicals, so the purpose of degrading harmful organic substances in the environment is achieved. The method provided by the invention dose not cause the waste of resources and the formation of secondary pollution, is simple and convenient in operation, and is a green, environment-friendly and highly-efficient pollution treatment technology.

Description

Technical field [0001] The present invention relates to a use of CuInS 2 Quantum dot supported reduced graphene oxide (rGO) composite material photocatalyst and its use belong to the technical field of environmental protection material preparation. Background technique [0002] Antibiotics are a class of chemical substances produced by microorganisms that can inhibit or kill other microorganisms at low concentrations. Currently widely used antibiotics can be divided into quinolones, β-lactams, tetracyclines, aminoglycosides, macrolides, sulfonamides, etc. according to their chemical structure. For a long time, antibiotics have been widely used in the treatment of human and animal diseases, and added to animal feed in sub-therapeutic doses to prevent animal diseases and promote their growth. However, most of the antibiotics cannot be completely absorbed by the body. About 90% of the antibiotics are discharged into the environment through the feces and urine of patients and livest...

Claims

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Application Information

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IPC IPC(8): B01J27/04C09K11/62B82Y20/00B82Y40/00C02F1/30C02F1/72C02F101/34C02F101/36C02F101/38
CPCC09K11/621B82Y20/00B82Y40/00C02F1/30C02F1/725B01J27/04C02F2305/10C02F2101/34C02F2101/36C02F2101/38B01J35/39
Inventor 李金择刘重阳吴东遥关静茹王会琴马长畅霍鹏伟闫永胜
Owner JIANGSU UNIV
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