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Tubular g-C3N4/CuS/Cu2S nano composite material and preparation method and application thereof

A nanocomposite material, g-c3n4 technology, applied in the field of materials, can solve the problems of high energy consumption, secondary pollution, incomplete treatment, etc., and achieve the effect of uniform distribution, large specific surface area, and favorable separation

Active Publication Date: 2019-10-25
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the commonly used methods for treating water pollution include precipitation, extraction, adsorption and membrane separation. These methods are often accompanied by problems such as high energy consumption, incomplete treatment, and secondary pollution.

Method used

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  • Tubular g-C3N4/CuS/Cu2S nano composite material and preparation method and application thereof
  • Tubular g-C3N4/CuS/Cu2S nano composite material and preparation method and application thereof
  • Tubular g-C3N4/CuS/Cu2S nano composite material and preparation method and application thereof

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Experimental program
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preparation example Construction

[0036] Tubular g-C of the present invention 3 N 4 / CuS / Cu 2 The preparation method of S nanocomposite material, comprises the following steps:

[0037] (1) will prepare g-C 3 N 4 The raw materials are thermally polycondensed under static atmosphere to obtain g-C 3 N 4 Block shape;

[0038] Among them, the preparation of g-C 3 N 4 The raw material is a mixture of one or more of urea, melamine, dicyandiamide or cyanamide; the conditions for thermal polycondensation are: the temperature is raised to 350-750°C at a heating rate of 1-8°C / min, and the heat preservation 2~5h;

[0039] (2) the g-C obtained in step (1) 3 N 4 Bulk shape is thermally exfoliated under air atmosphere to obtain light yellow g-C 3 N 4 Nanosheets;

[0040] Among them, the conditions for thermal peeling are: heating at a heating rate of 1-15°C / min to a temperature of 400-750°C, and holding for 2-6 hours;

[0041] (3) the g-C obtained in step (2) 3 N 4 The nanosheets were calcined in a tube fur...

Embodiment 1

[0054] (1) Weigh 7g of dicyandiamide and add it to an alumina crucible with a lid. Under air atmosphere conditions, heat up to 350°C through a muffle furnace at a heating rate of 1°C / min, and keep it warm for 1h to obtain a yellow powder sample as g-C 3 N 4 Block shape;

[0055] (2) put g-C 3 N 4 The block is spread on the bottom of the uncovered ceramic ark, and under the condition of air atmosphere, the temperature is raised to 400°C through the muffle furnace at a heating rate of 1°C / min, and kept for 2h, and the obtained light yellow powder sample is g-C 3 N 4 Nanosheets;

[0056] (3) will get g-C 3 N 4 The nanosheets were placed in a tube furnace, fed with nitrogen, heated to 250°C at a heating rate of 5°C / min for calcination, and kept for 5 minutes to obtain a yellow powder;

[0057] (4) Take out the yellow powder and place it in an ice bath for 5 minutes to obtain g-C 3 N 4 nanotube;

[0058] (5) the resulting g-C 3 N 4 nanotubes and 0.7 g copper sulfate pen...

Embodiment 2

[0062] Steps (1)-(4) of the present embodiment are the same as embodiment 1, and the follow-up steps are as follows:

[0063] 1.0g copper chloride (CuCl 2 ) into 100mL ethanol, then add g-C 3 N 4 The nanotubes were sonicated for 50 min. Take 1.0g sodium sulfide (Na 2 S) Dissolve in ethanol and sonicate for 50 minutes, mix the two dispersions, heat in a water bath at 90°C and stir vigorously for 4 hours; centrifuge at 7000r / min after the reaction, and dry the obtained precipitate at 60°C to obtain a tubular g-C 3 N 4 / CuS / Cu 2 S nanocomposites.

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Abstract

The invention discloses a tubular g-C3N4 / CuS / Cu2S nano composite material and a preparation method and application thereof. The nano composite material is a ternary composite material prepared from g-C3N4, CuS and Cu2S nano particles, wherein g-C3N4 is of a nano-tubular structure, CuS and Cu2S nanoparticles are uniformly dispersed on the tube wall of g-C3N4, and g-C3N4, CuS and Cu2S construct a p-n heterojunction structure with an obvious interface. The content, length and diameter of each component of the nano composite material are adjustable, the adjustable range is large, and the photocatalytic degradation performance under visible light is good.

Description

technical field [0001] The invention relates to the field of materials, in particular to a tubular g-C 3 N 4 / CuS / Cu 2 S nanocomposites and their preparation methods and applications. Background technique [0002] With the rapid development of industry, the pollution of water environment is becoming more and more serious. As one of the countries with extremely poor water resources in the world, my country's per capita share is less than 1 / 3 of the world's average level, and serious water pollution has exacerbated the poverty of water resources. Degree. It is of great significance to explore the research on the efficient removal of pollutants in water bodies. At present, the commonly used methods for treating water pollution include precipitation, extraction, adsorption and membrane separation. These methods are often accompanied by problems such as high energy consumption, incomplete treatment, and secondary pollution. Visible light catalysis technology has attracted ext...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J37/10B01J35/10B01J37/34B01J37/03B82Y30/00B82Y40/00C02F1/30C02F101/22
CPCB01J27/24B01J37/10B01J37/343B01J37/031B82Y30/00B82Y40/00C02F1/30C02F2305/10C02F2101/22B01J35/613B01J35/39
Inventor 魏昂武德伟王婷位威郭微
Owner NANJING UNIV OF POSTS & TELECOMM
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