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Preparation method for cadmium sulfide/graphene composite material

A composite material, graphene technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of long preparation cycle, low preparation yield, complicated operation process, etc., and achieve high yield The effect of high, low preparation temperature and wide application prospects

Inactive Publication Date: 2014-04-16
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods have disadvantages such as complicated operation process, long preparation cycle and low preparation yield.

Method used

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  • Preparation method for cadmium sulfide/graphene composite material
  • Preparation method for cadmium sulfide/graphene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of preparation method of cadmium sulfide / graphene composite material, comprises the steps:

[0023] (1) Add 0.0346 mol of cadmium nitrate and 0.0567 mol of thiourea into 100 mL of deionized water, and stir to obtain a clear solution A.

[0024] (2) Add 0.05 g of graphene oxide into solution A, ultrasonically disperse until uniform, then heat and evaporate the solution at 250 °C until it becomes gelatinous, continue to heat until it burns and releases a large amount of gas, and the obtained product is Cadmium sulfide / graphene composites.

[0025] figure 1 Among them, the X-ray diffraction pattern of the obtained sample is consistent with the peak number and position on the standard PDF card of CdS. It shows that what is obtained is indeed a cadmium sulfide / graphene composite material. Depend on figure 2 It can be seen that after 120 minutes of visible light irradiation, the photocatalytic efficiency of the cadmium sulfide / graphene composite to methylene blue ...

Embodiment 2

[0027] A kind of preparation method of cadmium sulfide / graphene composite material, comprises the steps:

[0028] (1) Add 0.0346 mol of cadmium nitrate and 0.0567 mol of thiourea into 100 mL of deionized water, and stir to obtain a clear solution A.

[0029] (2) Add 0.025 g of graphene oxide into solution A, ultrasonically disperse until uniform, then heat and evaporate the solution at 300 °C until it becomes gelatinous, and continue to heat until it burns and releases a large amount of gas. The obtained product is Cadmium sulfide / graphene composites.

Embodiment 3

[0031] A kind of preparation method of cadmium sulfide / graphene composite material, comprises the steps:

[0032] (1) Add 3.46 mmol of cadmium nitrate and 5.67 mmol of thiourea into 50 mL of deionized water, and stir to obtain a clear solution A.

[0033] (2) Add 0.25 g of graphene oxide into solution A, ultrasonically disperse until uniform, then heat and evaporate the solution at 400 °C until it becomes gelatinous, and continue to heat until it burns and releases a large amount of gas. The obtained product is Cadmium sulfide / graphene composites.

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Abstract

The invention discloses a preparation method for a cadmium sulfide / graphene composite material. The preparation method comprises the steps of (1) adding cadmium sulfide and thiourea into deionized water, and stirring to obtain a clarified solution A; (2) adding oxidized graphene into the solution A, performing ultrasonic dispersion until the oxidized graphene is uniformly dispersed, heating to evaporate the mixture until the mixture is colloid, continuing to heat and combust the mixture to discharge a large amount of gas, wherein the obtained product is the cadmium sulfide / graphene composite material. According to the preparation method disclosed by the invention, the required temperature is low, the process is simple, the operation is easy, the yield is high, and preparation method can be used for large-batch production. The composite material prepared by the method has excellent photocatalysis performance.

Description

technical field [0001] The invention relates to the field of inorganic synthesis of photocatalysts, in particular to a preparation method of a cadmium sulfide / graphene composite material. Background technique [0002] Cadmium sulfide is an inorganic compound composed of sulfur and cadmium. It is a highly sensitive N-type photoconductive device material and piezoelectric device material. Due to its good photoelectric performance, it has been widely used in many fields. At the same time, it can also be compounded with other substances to prepare composite materials with better performance. [0003] Graphene oxide has received extensive attention due to its specific two-dimensional structure and photoelectric properties. Moreover, it can be used as a performance-enhancing phase to compound with other compounds to prepare composite materials with specific properties. By combining graphene oxide with cadmium sulfide, photogenerated electrons can be injected into graphene oxide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04
Inventor 张大凤刘建秀蒲锡鹏苏昌华李红
Owner LIAOCHENG UNIV
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