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A kind of flower-like cobalt sulfide photocatalyst and preparation method thereof

A cobalt sulfide photocatalyst technology, which is applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc. Less application and other problems, to achieve the effect of perfect crystal, low price and good dispersion

Active Publication Date: 2019-06-18
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used photocatalysts are precious metal-based photocatalysts such as gold (Au) and platinum (Pt). Wide range of applications
Compared with noble metal-based photocatalysts, non-noble metal elements such as nickel (Ni), iron (Fe) and cobalt (Co) are abundant in the earth and cheap, and are very suitable for large-scale industrial applications, but they are very suitable for photocatalytic applications. Research on non-precious metal-based photocatalysts is still insufficient

Method used

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  • A kind of flower-like cobalt sulfide photocatalyst and preparation method thereof
  • A kind of flower-like cobalt sulfide photocatalyst and preparation method thereof
  • A kind of flower-like cobalt sulfide photocatalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The present embodiment prepares flower-shaped cobalt sulfide photocatalyst as follows:

[0025] Sequentially weigh 249.08mg of cobalt acetate and 38.06mg of thiourea, place them in 4mL of hydrazine hydrate, mix well and fully dissolve, then add 36mL of diethylenetriamine, stir and mix well, then add the resulting black solution to 50mL of polytetrafluoroethylene In an ethylene reactor, the reactor was placed in an oven at 180°C for a hydrothermal reaction for 24 hours, then naturally cooled to room temperature, and the product was centrifuged, washed and dried to obtain a flower-shaped cobalt sulfide photocatalyst.

[0026] figure 1 with figure 2 They are scanning electron micrographs and X-ray diffraction spectra of the product, respectively. from figure 1 It can be seen that the catalyst is a flower-like structure composed of 2-3 μm micro-sheets; from figure 2 It can be clearly seen that no obvious diffraction peaks appear in the spectrogram of the catalyst, and...

Embodiment 2

[0029] The present embodiment prepares flower-shaped cobalt sulfide photocatalyst as follows:

[0030] Sequentially weigh 249.08mg of cobalt acetate and 75.13mg of thioacetamide, place them in 4mL of hydrazine hydrate, mix well and dissolve them fully, then add 36mL of diethylenetriamine, stir and mix evenly, then add the resulting black solution to 50mL of poly In a tetrafluoroethylene reactor, the reactor was placed in an oven at 180°C for hydrothermal reaction for 24 hours, then naturally cooled to room temperature, and the product was centrifuged, washed and dried to obtain a flower-shaped cobalt sulfide photocatalyst.

[0031] The morphology of the samples obtained in this example is similar to that of Example 1, with uniform morphology, good dispersion and perfect crystals.

[0032] After testing, in the photocatalytic water splitting hydrogen production reaction, the hydrogen production rate of the cobalt sulfide photocatalyst of this embodiment is 730.5 μmol / h, which i...

Embodiment 3

[0034] The present embodiment prepares flower-shaped cobalt sulfide photocatalyst as follows:

[0035] Sequentially weigh 249.08mg of cobalt acetate and 240.18mg of sodium sulfide nonahydrate and place them in 4mL of hydrazine hydrate, mix well and fully dissolve, then add 36mL of diethylenetriamine, stir and mix evenly, then add the resulting black solution to 50mL of poly In a tetrafluoroethylene reactor, the reactor was placed in an oven at 180°C for hydrothermal reaction for 24 hours, then naturally cooled to room temperature, and the product was centrifuged, washed and dried to obtain a flower-shaped cobalt sulfide photocatalyst.

[0036] The morphology of the samples obtained in this example is similar to that of Example 1, with uniform particle size, good dispersion and perfect crystals.

[0037] After testing, in the photocatalytic water splitting hydrogen production reaction, the hydrogen production rate of the cobalt sulfide photocatalyst of this embodiment is 890.6 ...

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Abstract

The invention discloses a flower-like cobalt sulfate photocatalyst and a preparation method thereof, the flower-like cobalt sulfate photocatalyst is prepared from an inorganic cobalt salt and a sulfur-bearing compound by means of simple hydrothermal reaction; the preparation method has the advantages of simplicity, high efficiency, good environmental friendliness, controllability, low cost and the like; the flower-like cobalt sulfate prepared herein as high stability, large specific surface area and high photocatalytic activity.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, in particular to a method for preparing a high-efficiency non-noble metal transition element sulfide photocatalyst. Background technique [0002] Currently, the global energy supply mainly depends on limited and non-renewable fossil fuels such as coal, oil and natural gas. However, the combustion of fossil fuels has brought about a series of environmental problems. The continuous deterioration of the environment has led to an increasingly harsh living environment. Therefore, adjusting the energy structure is an important task for human beings. Exploring and utilizing new energy sources has become an urgent problem for scientists to solve. . [0003] As a green, pollution-free and abundant energy source, solar energy is called "the dream technology of the 21st century". my country has listed solar energy utilization as one of the important contents of the "National Medium and Long-T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/043B01J35/02
CPCB01J27/043B01J35/004B01J35/02
Inventor 潘云翔张帆崔宇孙正庆
Owner HEFEI UNIV OF TECH
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