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Preparation method and application of CuInS2 quantum dot/NiAl-LDH composite photocatalyst

A photocatalyst, quantum dot technology, applied in physical/chemical process catalysts, chemical instruments and methods, water/sludge/sewage treatment, etc. The effect of good separation efficiency

Active Publication Date: 2019-12-31
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is no CuInS 2 Research Report on Quantum Dots and NiAl-LDH Composite Materials

Method used

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  • Preparation method and application of CuInS2 quantum dot/NiAl-LDH composite photocatalyst
  • Preparation method and application of CuInS2 quantum dot/NiAl-LDH composite photocatalyst
  • Preparation method and application of CuInS2 quantum dot/NiAl-LDH composite photocatalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0032] (1) CuInS 2 Preparation of Quantum Dot Photocatalyst

[0033] Put 0.17g of copper chloride dihydrate and 20mL of ethylenediamine into a small beaker, dissolve them all, add 0.22g of indium chloride and 0.24g of L-cysteine, add 20ml of deionized water and magnetically stir to assist the reaction 30min; Pour into a high-pressure reaction kettle and heat at 150°C for 7h in a blast drying oven, take it out and let it cool naturally, centrifuge, wash with deionized water and ethanol three times each, put it in a blast drying oven to dry, and obtain CuInS 2 Quantum dot photocatalyst.

[0034] (2) Preparation of NiAl-LDH photocatalyst

[0035] Weigh 1.875g of nickel nitrate hexahydrate and 2.181g of aluminum nitrate into a small beaker, add deionized water until completely dissolved, add 2.453g of urotropine, magnetically stir the reaction for 1h, and pour it into a high-pressure reactor with a drum Heat in an air drying oven at 150°C for 7 hours, take it out and let it coo...

Embodiment 2

[0040] (1) CuInS 2 Preparation of Quantum Dot Photocatalyst

[0041] Put 0.17g of copper chloride dihydrate and 20mL of ethylenediamine into a small beaker to dissolve them all, then add 0.22g of indium chloride and 0.24g of L-cysteine, add 20ml of deionized water and stir magnetically Auxiliary reaction for 30 minutes, poured into a high-pressure reaction kettle and heated at 160°C for 5 hours in a blast drying oven, took it out and cooled it naturally, centrifuged the solution, washed with deionized water and ethanol three times, put it in a blast drying oven to dry, and obtained CuInS 2 Quantum dot photocatalyst.

[0042] (2) Preparation of NiAl-LDH photocatalyst

[0043] Weigh 1.875g of nickel nitrate hexahydrate and 2.181g of aluminum nitrate into a small beaker, add deionized water until completely dissolved, add 2.453g of urotropine, magnetically stir the reaction for 1h, and pour it into a high-pressure reactor with a drum Heated in an air drying oven at 160°C for 5...

Embodiment 3

[0050] (1) CuInS 2 Preparation of Quantum Dot Photocatalyst

[0051] Put 0.17g of copper chloride dihydrate and 20mL of ethylenediamine into a small beaker, dissolve them all, add 0.22g of indium chloride and 0.24g of L-cysteine, measure 20ml of deionized water with the aid of magnetic stirring React for 50 minutes. Pour it into a high-pressure reaction kettle and heat it in a blast drying oven at 180°C for 4 hours, take it out and cool it naturally, centrifuge the solution, wash it with deionized water and ethanol three times each, and dry it in a blast drying oven to obtain CuInS 2 Quantum dot photocatalyst.

[0052] (2) Preparation of NiAl-LDH photocatalyst

[0053] Weigh 1.875g of nickel nitrate hexahydrate and 2.181g of aluminum nitrate into a small beaker, add deionized water until completely dissolved, add 2.453g of urotropine, magnetically stir the reaction for 1h, and pour it into a high-pressure reactor with a drum Heat in an air drying oven at 180°C for 4 hours,...

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Abstract

The invention belongs to the technical field of preparation of environmental materials, and particularly relates to a preparation method and application of a CuInS2 quantum dot / NiAl-LDH composite photocatalyst. According to the invention, CuInS2 quantum dots and NiAl-LDH are loaded to form a CuInS2 quantum dot / NiAl-LDH heterojunction, so the recombination efficiency of electrons is greatly reduced, the photoresponse capability of the catalyst is greatly enhanced, and the CuInS2 quantum dot / NiAl-LDH composite photocatalyst has more excellent photocatalytic activity compared with a pure NiAl-LDHphotocatalys. The prepared CuInS2 quantum dot / NiAl-LDH photocatalyst can efficiently degrade 2,4-dichlorophenol wastewater, does not cause the wasting of resources and the formation of additional pollution, is simple and convenient to operate, and is an environment-friendly and efficient treatment technology.

Description

technical field [0001] The invention belongs to the technical field of environmental material preparation and relates to a CuInS 2 Preparation method and application of quantum dot / NiAl-LDH composite photocatalyst. Background technique [0002] Phenols and their compounds are widely used in wood preservatives, insecticides, herbicides and so on. Extensive use of chlorophenols will cause environmental pollution, and through the water circulation system, there will be a large number of residues in water, soil and other media, and have a potential impact on the human body. Taking 2,4-dichlorophenol as an example, 2,4-dichlorophenol has the characteristics of strong stability, volatility and strong irritant, which has a great impact on the environment and even endangers human life. Therefore, how to effectively remove the residual 2,4-dichlorophenol in the environment has become a major problem that researchers urgently need to solve. The existing 2,4-dichlorophenol treatment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/043C02F1/30C02F1/74C02F101/34
CPCB01J27/043C02F1/30C02F1/725C02F1/74C02F2101/345C02F2305/10C02F2305/023B01J35/39
Inventor 门秋月汪涛马长畅刘锡清王文娟闫永胜杨丽丽霍鹏伟
Owner JIANGSU UNIV
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