Preparation method and applications of CuS catalyst having three-dimensional layered structure

A layered structure and catalyst technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of poor cycle stability and difficult recycling of CuS catalysts, and achieve the benefit of large-scale The effect of promotion, convenient and fast separation and treatment, and improvement of utilization rate

Pending Publication Date: 2019-08-30
ZHONGYUAN ENGINEERING COLLEGE
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is based on at least one of the above-mentioned technical problems, and proposes a method and application of an in-situ vulcanization method for preparing CuS catalysts; the present invention uses copper foam as a precursor, through a convenient one-step inert atmosphere temperature-controlled vulcanization process, to form a The CuS catalyst with a three-dimensional network layered structure modifies the existing CuS catalyst, which improves the problems of poor cycle stability and difficult recycling of the existing CuS catalyst; at the same time, the preparation method provided by the invention is simple and easy, and does not require Complex and expensive equipment, easy control of synthesis conditions, and low cost

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  • Preparation method and applications of CuS catalyst having three-dimensional layered structure
  • Preparation method and applications of CuS catalyst having three-dimensional layered structure
  • Preparation method and applications of CuS catalyst having three-dimensional layered structure

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Effect test

Embodiment 1

[0043] Mix the foamed copper and sulfur powder at a molar ratio of 1:4 and seal the container, place it in a tube furnace, heat up to 400 ℃ at a rate of 5 ℃ / min under the protection of a nitrogen atmosphere and keep it for 5 hours, then The temperature is lowered to room temperature at a cooling rate of 10°C / min, and the obtained sample is washed with water and ethanol, and dried to obtain the final product. The obtained CuS catalyst was subjected to X-ray diffraction (XRD) and scanning electron microscopy, and the results are shown respectively figure 1 with figure 2 . by figure 1 It can be seen that all the diffraction peaks are consistent with the standard pattern of CuS, indicating that the crystalline phase of the material is a pure CuS phase. by figure 2 It can be seen that the catalyst prepared according to the method provided by the present invention is a CuS catalyst with a three-dimensional network layered structure composed of nanosheets.

Embodiment 2

[0045] Mix the foamed copper and sulfur powder at a molar ratio of 1:4 and seal the container. Place it in a tube furnace. Under the protection of a nitrogen atmosphere, it will be heated to 500 ℃ at a rate of 5 ℃ / min and kept for 5 hours. The temperature is lowered to room temperature at a cooling rate of 10°C / min, and the obtained sample is washed with water and ethanol, and dried to obtain the final product. Scan the obtained catalyst by electron microscope, the result is image 3 ,by image 3 It can be seen that the catalyst prepared according to the method provided by the present invention has a three-dimensional network structure composed of nano-carpets.

Embodiment 3

[0047] Mix the foamed copper and sulfur powder at a molar ratio of 1:4 and seal the container, place it in a tube furnace, heat it up to 600 ℃ at a rate of 5 ℃ / min under the protection of a nitrogen atmosphere and keep it for 5 hours, then The temperature is lowered to room temperature at a cooling rate of 10°C / min, and the obtained sample is washed with water and ethanol, and dried to obtain the final product. Scan the obtained catalyst by electron microscope, the result is Figure 4 ,by Figure 4 It can be seen that the catalyst prepared according to the method provided by the present invention has a three-dimensional network structure composed of a honeycomb.

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Abstract

The invention provides a preparation method and applications of a CuS catalyst having a three-dimensional layered structure. The preparation method comprises: uniformly mixing a sulfur source materialand copper foam according to a molar ratio of 4-20:1; under the protection of an inert gas, heating to a temperature of 300-600 DEG C at a heating rate of 0.5-20 DEG C / min, and carrying out a reaction for 1-20 h; and after completing the vulcanization reaction, cooling to a room temperature at a cooling rate of 0.5-50 DEG C / min. According to the present invention, the CuS catalyst having the three-dimensional layered structure is formed by using the copper foam as the precursor through the convenient one-step inert atmosphere temperature control vulcanization process, such that the existing CuS catalyst is modified, and the problems of poor circulation stability, difficult recycling and the like of the existing CuS catalyst are improved.

Description

Technical field [0001] The invention relates to the technical field of chemical nanomaterials, in particular to a preparation method and application of a CuS catalyst with a three-dimensional layered structure. Background technique [0002] Environmental and energy issues are the two major issues that restrict the development of today’s society. Semiconductor photocatalysis technology uses solar energy as the driving force of the reaction to effectively reduce energy consumption. It has become a solution to these two major issues due to its mild reaction conditions and no secondary pollution. The ideal way. Nanomaterials rich in transition metals not only have special physical and chemical properties such as scale effect, large specific surface area, and strong interfacial interaction, but also an important semiconductor material, which is widely used in catalysis. Therefore, the preparation of transition metal micro / nano materials is one of the important ways to obtain high cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J37/20C02F1/30C02F101/30
CPCB01J27/04B01J35/004B01J37/20C02F1/30C02F2101/308C02F2305/10
Inventor 秦娜米立伟黄超陈高林陈卫华
Owner ZHONGYUAN ENGINEERING COLLEGE
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