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Preparation method of CuS/g-C3N4 nano-spheroidized compound catalyst

A technology of g-c3n4 and nanospheres, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as photochemical corrosion and poor stability, and achieve easy operation, improved stability, and guaranteed The effect of adsorption and catalytic performance

Inactive Publication Date: 2015-06-24
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the photochemical corrosion of single nano-CuS, the stability is poor.

Method used

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  • Preparation method of CuS/g-C3N4 nano-spheroidized compound catalyst
  • Preparation method of CuS/g-C3N4 nano-spheroidized compound catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) g-C 3 N 4 preparation of

[0019] Weigh 3.0g of melamine into a 50mL ceramic crucible, put it into a muffle furnace, and raise the temperature from room temperature to 550°C in the air at a rate of 2°C / min. After constant temperature for 4 hours, cool naturally to room temperature to obtain yellow g-C 3 N 4 product.

[0020] (2) CuS / g-C 3 N 4 Preparation of nanosphere flowers

[0021] Weigh copper acetate, acetylacetone and sulfur chloride respectively, g-C 3 N 4 In a beaker, add absolute ethanol and ultrasonically stir for 10 min. Each raw material mass ratio is copper acetate: acetylacetone: sulfur chloride: g-C 3 N 4 = 1:1:3:0.44. Add acetylacetone-ethanol solution and sulfur chloride-ethanol solution to copper acetate-ethanol solution respectively, then add g-C 3 N 4 - After adding the ethanol solution to the above mixed solution, sonicate for 20 minutes. The mixed solution was transferred to a polytetrafluoroethylene reactor and heated in an oven ...

Embodiment 2

[0023] CuS / g-C 3 N 4 Preparation of nanosphere flowers

[0024] Weigh copper acetate, acetylacetone and sulfur chloride respectively, g-C 3 N 4 (Preparation is the same as in Example 1) In a beaker, add absolute ethanol and ultrasonically stir for 10 min. Each raw material mass ratio is copper acetate: acetylacetone: sulfur chloride: g-C 3 N 4 = 1:1:3:0.44. Add acetylacetone-ethanol solution and sulfur chloride-ethanol solution to copper acetate-ethanol solution respectively, then add g-C 3 N 4 - After adding the ethanol solution to the above mixed solution, sonicate for 20 minutes. The mixed solution was transferred to a polytetrafluoroethylene reactor and heated in an oven at 160°C for 24h. Wash the precipitate with alcohol three times, and dry at 60°C to obtain CuS / g-C 3 N 4 Nanosphere flower composite catalyst.

Embodiment 3

[0026] CuS / g-C 3 N 4 Preparation of nanosphere flowers

[0027] Weigh copper acetate, acetylacetone and sulfur chloride respectively, g-C 3 N 4 (Preparation is the same as in Example 1) In a beaker, add absolute ethanol and ultrasonically stir for 10 min. Each raw material mass ratio is copper acetate: acetylacetone: sulfur chloride: g-C 3 N 4 =1:1:3:0.9 (marked as A), or copper acetate: acetylacetone: sulfur chloride: g-C 3 N 4 =1:1:3:0.67 (marked as B), or copper acetate: acetylacetone: sulfur chloride: g-C 3 N 4 =1:1:3:0.11 (denoted as C). Add acetylacetone-ethanol solution and sulfur chloride-ethanol solution to copper acetate-ethanol solution respectively, then add g-C 3 N 4 - Add the ethanol solution to the above mixed solution respectively, and sonicate for 20 minutes. The mixed solution was transferred to a polytetrafluoroethylene reactor and heated in an oven at 160 °C for 2 h. Wash the precipitate with alcohol three times, and dry at 60°C to obtain CuS / g...

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Abstract

The invention relates to a preparation method of a CuS / g-C3N4 nano-spheroidized compound catalyst. The preparation method comprises the following steps: (1) respectively weighing copper acetate, acetylacetone, sulphur chloride and g-C3N4, adding into a flask, adding with absolute ethanol, and carrying out ultrasonic stirring for 5-20 minutes; (2) respectively adding obtained acetylacetone-ethanol solution and sulfur chloride-ethanol solution into a copper acetate-ethanol solution, then adding a g-C3N4-ethanol solution into the mixed solution, and carrying out ultrasonic treatment; and (3) transferring the mixed solution into a polytetrafluoroethylene reaction kettle, heating in a drying oven, washing precipitates with alcohol, and drying, so as to obtain the CuS / g-C3N4 nano-spheroidized compound catalyst. Compared with the prior art, the preparation method has the advantages that the reaction is simple and rapid, the operation is easy, reaction conditions are mild, and the preparation method is applicable to industrial production; by taking visible light as a light source, the CuS / g-C3N4 nano-spheroidized compound catalyst prepared by virtue of the preparation method is applicable to the degradation of environmental organic pollutants.

Description

technical field [0001] The invention relates to the field of visible light catalytic materials, especially CuS / g-C 3 N 4 The preparation method of the nano ball flower composite catalyst. Background technique [0002] With the rapid development of economy and society, the random discharge of various industrial waste gases and waste water has made environmental problems increasingly prominent, and sustainable development is facing severe challenges. It is imperative to develop efficient and clean energy. Therefore, how to make better use of solar energy has become a research hotspot for scientists. [0003] g-C 3 N 4 It is a kind of polymer material with typical semiconductor characteristics, which has high exciton binding energy and low crystallinity, which is not conducive to the rapid migration and efficient separation of photogenerated electron-hole pairs, which leads to the partial quantum efficiency of its photocatalysis. Low, not conducive to the popularization an...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J20/02B01J20/30C02F1/30
Inventor 邹菁张胜周鑫龚晚芸邓河霞江吉周
Owner WUHAN INSTITUTE OF TECHNOLOGY
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