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Preparation method of molybdenum disulfide composite material

A composite material, molybdenum disulfide technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, chemical/physical processes, etc., to achieve simple and fast preparation methods, improve the ability to capture light, and prepare cost-effective method

Inactive Publication Date: 2018-10-09
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still many scientific basic principles to be further explored in porphyrin-based photocatalysts, such as the electronic structure and properties of the excited state, the formation and relaxation mechanism of the excited state electrons, and the way the excited state electrons are transferred to the semiconductor, how to use visible light to regulate Excited state electron transfer, etc.

Method used

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  • Preparation method of molybdenum disulfide composite material
  • Preparation method of molybdenum disulfide composite material
  • Preparation method of molybdenum disulfide composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 80mg of sodium molybdate and 320mg of thioacetamide, dissolve them in 64mL of deionized water, stir at room temperature for 30 minutes to make them fully dissolve, and then transfer them to a 100mL reactor with a polytetrafluoroethylene liner. React at 200°C for 24 hours. After the reaction is over, cool the reactor to room temperature, pour off the supernatant, and leave a black turbid solution. Use ethanol and deionized water to ultrasonically clean several times, then centrifuge, and finally Under vacuum drying at ℃ for 12 hours, the obtained black powder is petal-shaped molybdenum disulfide, and the field emission scanning electron microscope picture is as follows: figure 1 shown.

Embodiment 2

[0032] Weigh 80mg of sodium molybdate and 320mg of thioacetamide, dissolve them in 64mL of deionized water, stir at room temperature for 30 minutes to make them fully dissolve, and then transfer them to a 100mL reactor with a polytetrafluoroethylene liner. React at 180°C for 24 hours. After the reaction is over, cool the reactor to room temperature, pour off the supernatant, and leave a black turbid solution. Use ethanol and deionized water to ultrasonically clean several times, then centrifuge, and finally After vacuum drying at ℃ for 12 hours, the obtained black powder is petal-shaped molybdenum disulfide.

Embodiment 3

[0034] Weigh 80mg of sodium molybdate and 160mg of thioacetamide, dissolve them in 64mL of deionized water, stir at room temperature for 30 minutes to fully dissolve them, and then transfer them to a 100mL reaction kettle with a polytetrafluoroethylene liner. React at 180°C for 24 hours. After the reaction is over, cool the reactor to room temperature, pour off the supernatant, and leave a black turbid solution. Use ethanol and deionized water to ultrasonically clean several times, then centrifuge, and finally After vacuum drying at ℃ for 12 hours, the obtained black powder is petal-shaped molybdenum disulfide.

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Abstract

The invention discloses a preparation method of a molybdenum disulfide composite material. The preparation method includes the steps: (1) dispersing graphene oxide into water, adding sodium molybdateand thioacetamide, performing hydrothermal reaction to obtain an MoS2 / reduced graphene oxide composite material; or dissolving the sodium molybdate and the thioacetamide in the water and performing hydrothermal reaction to obtain petaloid MoS2; (2) soaking the composite material or petaloid MoS2 obtained in the step (1) in porphyrin solution to obtain the molybdenum disulfide composite material. According to the composite material prepared by the preparation method, the photoelectrochemical properties of molybdenum disulfide can be remarkably improved, and the application of the molybdenum disulfide to the field of photocatalytic degradation of organic matters is promoted.

Description

technical field [0001] The invention relates to a preparation method of molybdenum disulfide composite material. Background technique [0002] Molybdenum disulfide has the advantages of large specific surface area, strong adsorption capacity and high reactivity, and has attracted much attention in terms of catalytic performance in recent years. Because of its low price, it has superior hydrogen evolution activity and chemical stability. It has been reported in the literature that molybdenum disulfide nanoparticles, nanosheets and nanoflowers have been synthesized for hydrogen evolution reaction, all of which have good hydrogen evolution activity. However, the strong van der Waals force between molybdenum disulfide sheets makes it easy to agglomerate and poor conductivity during the preparation process, which hinders the further improvement of its catalytic performance and hydrogen evolution activity. Therefore, a large number of reports have improved its hydrogen evolution...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/34
CPCB01J31/34B01J35/004
Inventor 卢小泉王泽宁星铭汪天胜蒲贵强喜俊花杨召凡姚敏
Owner NORTHWEST NORMAL UNIVERSITY
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