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Graphene-CuInS2 nano composite photocatalyst

A nano-composite, photocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as harming the environment, expensive metal materials, easy dissolution, etc. Stability and regeneration performance, effect of large specific surface area

Inactive Publication Date: 2018-01-09
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(4) The price of metal materials is relatively expensive, and they are easy to dissolve during the reaction process and endanger the environment

Method used

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  • Graphene-CuInS2 nano composite photocatalyst
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  • Graphene-CuInS2 nano composite photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Using graphite powder as raw material, graphene oxide was synthesized by Hummers method, and then graphene oxide was dispersed into N,N-dimethylformamide solution.

[0032] (2) Add 1.0 mmol of cuprous chloride, 1.0 mmol of indium chloride, and 2.5 mmol of thioacetamide into 40 mL of N,N-dimethylformamide solution and stir until the solution is transparent, then add 0.00211 g of graphene, Then ultrasound was performed for 60 min.

[0033] (3) Transfer the solution to a 100 mL reactor, 120 o C, the reaction time is 8 hours.

[0034] (4) Centrifuge the reacted sample and wash it several times with deionized water and ethanol. o C for 12 hours under vacuum. Then take it out, let it cool naturally, and grind it. The obtained product is rGO-CuInS 2 Nanocomposite photocatalysts.

Embodiment 2

[0036] (1) Using graphite powder as raw material, graphene oxide was synthesized by the Hummers method, and then graphene oxide was dispersed in ethylene glycol solution.

[0037] (2) Add 1.0 mmol of cuprous chloride, 1.0 mmol of indium chloride, and 2.5 mmol of thioacetamide into 40 mL of ethylene glycol solution and stir until the solution is transparent, then add 0.00211 g of graphene, and then perform ultrasonication for 60 min .

[0038] (3) Transfer the solution to a 100 mL reactor, 120 o C, the reaction time is 8 hours.

[0039] (4) Centrifuge the reacted sample and wash it several times with deionized water and ethanol. o C for 12 hours under vacuum. Then take it out, let it cool naturally, and grind it. The obtained product is rGO-CuInS 2 Nanocomposite photocatalysts.

Embodiment 3

[0041] (1) Using graphite powder as raw material, graphene oxide was synthesized by Hummers method, and then graphene oxide was dispersed into ethanol solution.

[0042] (2) Add 1.0 mmol of cuprous chloride, 1.0 mmol of indium chloride, and 4 mmol of thioacetamide into 40 mL of ethanol solution and stir until the solution is transparent, then add 0.01055 g of graphene, and then perform ultrasonication for 60 min.

[0043] (3) Transfer the solution to a 100 mL reactor, 180 o C, the reaction time is 15 hours.

[0044] (4) Centrifuge the reacted sample and wash it several times with deionized water and ethanol. o C for 12 hours under vacuum. Then take it out, let it cool naturally, and grind it. The obtained product is rGO-CuInS 2 Nanocomposite photocatalysts.

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Abstract

The invention relates to a graphene-CuInS2 nano composite photocatalyst, A preparation method of the graphene-CuInS2 nano composite photocatalyst is characterized by comprising the following steps offirstly preparing graphene oxide (GO) by using an improved Hummers method, and dispersing the GO into an organic solvent; dissolving an inorganic cuprous salt, an inorganic indium salt and a sulfur source in an organic solution; meanwhile, adding an already well prepared GO organic solution; reacting through a one-step solvothermal method; fixing a nano CuInS2 thin film on an atomic-scale-thickness graphene (rGO (Reduced GO)) thin film (rGO-CuInS2) with a chemical bond. When the content of the graphene is 0.1 to 10 percent, the rGO-CuInS2 nano composite photocatalyst has a unique surface structure, is larger in specific surface area, narrow in forbidden band width, high in stability, good in renewability and high in visible-light catalytic activity, can be used for efficiently treating actual medicinal wastewater and has the COD (Chemical Oxygen Demand) removal rate which can reach 86.5 percent.

Description

technical field [0001] The invention relates to a rGO-CuInS with unique surface structure and excellent visible light catalytic activity 2 Nanocomposite photocatalyst and preparation method thereof. Background technique [0002] Pharmaceutical and Personal Care Products (PPCPs for short) are a new type of environmental pollutants, which have the characteristics of toxicity, persistence, bioaccumulation and biorefractory. Production waste and the use of cosmetics enter the water environment, bringing hidden dangers to the quality of the water environment, the safety of the ecosystem, and human health. Therefore, how to remove organic pollutants in wastewater becomes very important before the wastewater is discharged into the environment. Photocatalytic oxidation technology is a new water pollution treatment technology with broad application prospects. [0003] Ternary sulfide semiconductors have the advantages of narrow band gap and high stability, and have attracted much ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04C02F1/30
Inventor 邓芳卢晓英刘玲玲夏佰慧丁琳罗旭彪罗胜联
Owner NANCHANG HANGKONG UNIVERSITY
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