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Preparation method of near-infrared light response CuS/S-C3N4 heterojunction nanocomposite

A technology of S-C3N4 and nano-composite materials, which is applied in the field of environmental pollution control, can solve the problems that legacy pollution is difficult to be solved reasonably, and achieve the effects of improving utilization efficiency, improving absorption, and easy preparation

Inactive Publication Date: 2021-08-06
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the popularization and application of antibiotics, the problem of their residual pollution in the environment has been difficult to be reasonably solved
So far, there is no public report on the related process

Method used

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  • Preparation method of near-infrared light response CuS/S-C3N4 heterojunction nanocomposite
  • Preparation method of near-infrared light response CuS/S-C3N4 heterojunction nanocomposite
  • Preparation method of near-infrared light response CuS/S-C3N4 heterojunction nanocomposite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Near infrared light response CUS / S-C 3 N 4 Preparation of heterogeneous nano-composite materials, its preparation steps are:

[0023] (1) Weighing 10 g of urea in the secondary distilled water of 15 mL at 50 ° C, and then dissolved, then 100 mg of thioacetamide continued to completely dissolve.

[0024] (2) The mixed solution obtained by step (1) is transferred to the semi-sealing crucible and then sent to the rapid heating furnace, and the set procedure is 10 ° C from room temperature to 300 ° C holding 0.5 h, and then 10 ° C / min twice The temperature rise to 400 ° C insulation 1 h, then the yellow product obtained after natural cooling is SC 3 N 4 .

[0025] (3) 1.28 g s-c 3 N 4 The addition of 80 ml of secondary distilled water was added and dispersed evenly. It is repeated that 50 mg of pentaqueraphic sulfate and 100 mg thioacetamide were further added to the above solution under stirring conditions.

[0026] (4) After thoroughly stirring, transferred to the reactor...

Embodiment 2

[0028] Near infrared light response CUS / S-C 3 N 4 Preparation of heterogeneous nano-composite materials, its preparation steps are:

[0029] (1) Weigh 15 g of urea to stir at 50 ° C in a secondary distilled water at 20 mL, and then dissolved, then 150 mg of thioacetamide continued to stir until completely dissolved.

[0030] (2) Transferring the mixed solution obtained by step (1) to the semi-sealing crucible and then fed into the rapid heating furnace, and the set procedure temperature temperature increases from room temperature to 400 ° C to heat insulation 1 h, and then 15 ° C / min twice The temperature rise to 500 ° C insulation 2 h, and then the yellow product obtained after natural cooling is SC. 3 N 4 .

[0031] (3) 2.28 g s-c 3 N 4 The addition of 80 ml of secondary distilled water was added and dispersed evenly. Further, 75 mg of pentaqueraphic sulfate and 115 mg thioacetamide were added to the above solution under stirring conditions.

[0032] (4) After thoroughly sti...

Embodiment 3

[0034] Near infrared light response CUS / S-C 3 N 4 Preparation of heterogeneous nano-composite materials, its preparation steps are:

[0035] (1) Weigh 20 g of urea to stir in the secondary distilled water of 30 mL at 50 ° C, and then dissolved, then 180 mg of thiocanoacetamide continued to completely dissolve.

[0036] (2) Transferring the mixed solution obtained by step (1) to the semi-sealing crucible and then fed into the rapid heating furnace, the set procedure temperature temperature above the room temperature to 500 ° C for 2 h, then 20 ° C / min twice The temperature increased to 600 ° C for 3 h, and then the yellow product obtained after natural cooling is SC. 3 N 4 .

[0037] (3) 3.28 g s-c 3 N 4The addition of 80 ml of secondary distilled water was added and dispersed evenly. It is repeated that 100 mg of five hydrotropic sulfate and 150 mg thioacetamides were added to the above solution under stirring conditions.

[0038] (4) Through agitation, transferred to the reac...

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Abstract

The invention discloses a preparation method of a near-infrared light response CuS / sulfur-doped carbon nitride (S-C3N4) heterojunction nanocomposite. CuS grows on the surface of S-C3N4 in situ through a hydrothermal method to prepare the CuS / S-C3N4 heterojunction nanocomposite. The preparation method comprises the following operation steps: preparing S-C3N4 by using urea and thioacetamide (TAA) as raw materials and distilled water as a solvent through a two-step heating method; and by taking S-C3N4, CuSO4. 5H2O and TAA as raw materials and distilled water as a solvent, growing CuS on the surface of S-C3N4 in situ by adopting the hydrothermal method to prepare the CuS / S-C3N4 heterojunction nanocomposite. The preparation method has the advantages that the process is simple, the operation is simple and convenient, the cost is low, and the obtained CuS / S-C3N4 heterojunction nano composite material greatly expands the light response capability of g-C3N4 in visible and near-infrared spectral regions and remarkably improves the activity of the CuS / S-C3N4 heterojunction nano composite material in degrading organic pollutants.

Description

Technical field [0001] The present invention belongs to the technical field of environmental pollution, specific relates to a near infrared light response CUS / S-C 3 N 4 Preparation method of heterogeneous nano-composite material. Background technique [0002] With the spread of antibiotics, its legacy pollution problems in the environment have been difficult to resolve reasonably. Provide a better solution for this problem by efficiently utilizing solar photocatalytic degradation. Simple G-C 3 N 4 Compared to sulfur doped carbon nitride (S-C 3 N 4 Have better stability and suitable band gap, and enhance G-C after doping sulfur 3 N 4 The absorption capacity of light is improved, and its degradation activity on the pollutant is improved. Currently, S-C has 3 N 4 Reports to enhance the degradation efficiency of pollutants. [0003] Pathulfide (CUS) is a narrow band gap, which is easy to synthesize, low-cost P-type semiconductor material, and is widely used. Because of its narrow b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/30C02F101/30C02F101/38
CPCB01J27/24C02F1/30C02F2101/30C02F2101/38C02F2305/10B01J35/39
Inventor 程晓李喜宝黄军同李海李秋燕冯志军徐吉林万里鹰陈智
Owner NANCHANG HANGKONG UNIVERSITY
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