Preparation method and application of CQDs/CdIn2S4/N-rGO multi-dimensional photocatalyst

A photocatalyst, cdin2s4 technology, applied in physical/chemical process catalysts, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as complex operation, harsh synthesis conditions, and large energy consumption

Inactive Publication Date: 2019-01-11
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods have disadvantages such as high energy consumption, complicated operation, and relatively harsh synthesis conditions, and are not practical and cannot be applied on a large scale.

Method used

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  • Preparation method and application of CQDs/CdIn2S4/N-rGO multi-dimensional photocatalyst
  • Preparation method and application of CQDs/CdIn2S4/N-rGO multi-dimensional photocatalyst
  • Preparation method and application of CQDs/CdIn2S4/N-rGO multi-dimensional photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] (1) Nitrogen-doped reduced graphene oxide (N-rGO):

[0066] Graphene oxide (GO) powder was synthesized by a modified Hummer method, 0.3g GO powder was added to 150mL of deionized water, and ultrasonically dispersed. Add 2mL ammonia water and sonicate. Then add 1mL hydrazine hydrate, after ultrasonic, magnetically stir at 100°C for 24h, centrifuge, wash with deionized water several times, and dry in an oven at 60°C to obtain N-rGO.

[0067] (2) Preparation of CQDs:

[0068] Weigh 1.6g vitamin C, 15mL ethylene glycol, 15mL deionized water, sonicate for 0.5h, put the kettle at 160℃ for 2h, cool to room temperature, put it in a beaker containing 380mL deionized water for 2 days, then Dilute to 400mL.

[0069] (2) CdIn 2 S 4 / N-rGO(5wt%)(The mass of N-rGO accounts for CdIn 2 S 4 5% by mass) Preparation of photocatalyst:

[0070] Weigh 0.024g N-rGO, 1mmol cadmium chloride (CdCl 2 ·2.5H 2 O), 2mmol of indium chloride (InCl 3 ·4H 2 O), 4mmol of L-cysteine, add 30mL of deionized water,...

Embodiment 2

[0075] (1) Nitrogen-doped reduced graphene oxide (N-rGO):

[0076] Graphene oxide (GO) powder was synthesized by a modified Hummer method, 0.3g GO powder was added to 150mL of deionized water, and ultrasonically dispersed. Add 2mL ammonia water and sonicate. Then 1mL hydrazine hydrate was added, followed by sonication and magnetic stirring at 100°C for 24h, centrifuged, washed with deionized water several times, and dried in an oven at 60°C to obtain N-rGO.

[0077] (2) Preparation of CQDs:

[0078] Weigh 1.6g vitamin C, 15mL ethylene glycol, 15mL deionized water, sonicate for 0.5h, put the kettle at 160℃ for 2h, cool to room temperature, put it in a beaker containing 380mL deionized water for 2 days, then Dilute to 400mL.

[0079] (2) CdIn 2 S 4 / N-rGO(5wt%)(The mass of N-rGO accounts for CdIn 2 S 4 5% by mass) Preparation of photocatalyst:

[0080] Weigh 0.024g N-rGO, 1mmol cadmium chloride (CdCl 2 ·2.5H 2 O), 2mmol of indium chloride (InCl 3 ·4H 2 O), 4mmol of L-cysteine, add 30mL...

Embodiment 3

[0085] (1) Nitrogen-doped reduced graphene oxide (N-rGO):

[0086] Graphene oxide (GO) powder was synthesized by a modified Hummer method, 0.3g GO powder was added to 150mL of deionized water, and ultrasonically dispersed. Add 2mL ammonia water and sonicate. Then add 1mL hydrazine hydrate, after ultrasonic, magnetically stir at 100°C for 24h, centrifuge, wash with deionized water several times, and dry in an oven at 60°C to obtain N-rGO.

[0087] (2) Preparation of CQDs:

[0088] Weigh 1.6g of vitamin C, 15mL of ethylene glycol, 15mL of deionized water, ultrasound for 0.5h, put the kettle at 160℃ for 2h, cool to room temperature, put it into a beaker containing 380mL of deionized water for 2 days, then Dilute to 400mL.

[0089] (2) CdIn 2 S 4 / N-rGO(5wt%)(The mass of N-rGO accounts for CdIn 2 S 4 5% by mass) Preparation of photocatalyst:

[0090] Weigh 0.024g N-rGO, 1mmol cadmium chloride (CdCl 2 ·2.5H 2 O), 2mmol of indium chloride (InCl 3 ·4H 2 O), 4mmol of L-cysteine, add 30mL of ...

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Abstract

The invention belongs to the technical field of environmental material preparation and relates to a preparation method and an application of a CQDs / CdIn2S4 / N-rGO multi-dimensional photocatalyst. The preparation method comprises the following steps: (1) preparing nitrogen doped reduced graphene oxide N-rGO; (2) preparing flower-like CdIn2S4; (3) preparing CQDs; (4) preparing CdIn2S4 / N-rGO; (5) preparing a CQDs / CdIn2S4 / N-rGO compound photocatalyst. According to the invention, the purpose of degrading 2,4-dichlorophenol wastewater by using CQDs modified flower-like CdIn2S4 semiconductor loaded N-rGO as photocatalyst is achieved.

Description

Technical field [0001] The invention belongs to the technical field of environmental material preparation, and relates to a CQDs / CdIn 2 S 4 / N-rGO multi-dimensional photocatalyst preparation method and application. Background technique [0002] Phenols and their compounds are widely used in petrochemical, coal chemical, agricultural and other fields, and the environmental problems brought by the application of products cannot be ignored. The pollution of phenolic compounds to water bodies is one of the main industrial wastewater pollution. Taking 2,4-dichlorophenol as an example, it is widely used in pesticides, wood preservatives, herbicides and other fields. However, 2,4-dichlorophenol has the characteristics of high stability, strong irritation, and volatility, which will cause a lot of harm to the atmosphere, ecology, and human health (such as death of fish and shrimp, damage to human protein, nerves, digestion, urinary The system has toxic effects and even death.). Theref...

Claims

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Application Information

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IPC IPC(8): B01J27/24C02F1/30C02F101/34C02F101/36
CPCC02F1/30B01J27/24C02F2305/10C02F2101/36C02F2101/34C02F2101/345B01J35/39
Inventor 刘重阳李鑫李金泽关静茹孙林林周亚举王会琴霍鹏伟马长畅闫永胜
Owner JIANGSU UNIV
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