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A kind of preparation method of 3d porous cobalt tin molybdenum trimetallic catalyst

A technology of three metals and catalysts, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of cumbersome synthesis steps, achieve simple synthesis steps, improve catalytic efficiency, and increase electrical conductivity Effect

Active Publication Date: 2020-09-01
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the heterostructure constructed by this method is limited to the introduction of only highly conductive substances.
In addition, Zhu Min and Xie Jimin CN 201810461343 .6 and CN201711024065 .X patents have constructed heterogeneous structures that not only contain components with high conductivity but also components with high catalytic activity, but the composites synthesized are mainly through physical Obtained by mixing, the synthesis steps are cumbersome, and an additional sulfur source is required

Method used

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  • A kind of preparation method of 3d porous cobalt tin molybdenum trimetallic catalyst
  • A kind of preparation method of 3d porous cobalt tin molybdenum trimetallic catalyst
  • A kind of preparation method of 3d porous cobalt tin molybdenum trimetallic catalyst

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Experimental program
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Effect test

Embodiment 1

[0030] Dissolve 1 mmol cobalt chloride hexahydrate and 0.5 mmol sodium citrate dihydrate in 35 mL deionized water and stir for several minutes. A 5 mL ethanol solution containing 1 mmol of tin chloride pentahydrate was added thereto and stirred until the solution was fully mixed. Subsequently, 30 mL of 2 M sodium hydroxide solution was added dropwise. The reaction was stirred at room temperature for 0.5 h. Finally, the final pink precipitate was collected by centrifugation, washed several times with deionized water and absolute ethanol, respectively, and then vacuum-dried at 50 °C for 12 h to obtain cubic CoSn(OH) 6 Precursor. Add 50 mg of the above cubic CoSn(OH) 6 The precursor and 25 mg of ammonium tetrathiomolybdate were dispersed in 30 mL of deionized water. After the solution was fully dispersed, it was packaged in a polytetrafluoroethylene reactor, and centrifuged and washed after hydrothermal reaction at 160 °C for 8 h. , Vacuum drying. The obtained dried product ...

Embodiment 2

[0032] Dissolve 1 mmol cobalt chloride hexahydrate and 0.75 mmol sodium citrate dihydrate in 35 mL deionized water and stir for several minutes. Then add 5 mL of ethanol solution containing 1 mmol of tin chloride pentahydrate and stir until the solution is fully mixed. Subsequently, 25 mL of 2 M sodium hydroxide solution was added dropwise. The reaction was stirred at room temperature for 0.5 h. Finally, the final pink precipitate was collected by centrifugation, washed several times with deionized water and absolute ethanol, respectively, and then vacuum-dried at 50 °C for 12 h to obtain cubic CoSn(OH) 6 Precursor. Add 50 mg of the above cubic CoSn(OH) 6 The precursor and 25 mg of ammonium tetrathiomolybdate were dispersed in 30 mL of deionized water. After the solution was fully dispersed, it was packaged in a polytetrafluoroethylene reactor, and centrifuged and washed after hydrothermal reaction at 160 °C for 10 h. , Vacuum drying. The obtained dried product was kept a...

Embodiment 3

[0034] Dissolve 1 mmol cobalt chloride hexahydrate and 1 mmol sodium citrate dihydrate in 35 mL deionized water and stir for several minutes. Then add 5 mL of ethanol solution containing 1 mmol of tin chloride pentahydrate and stir until the solution is fully mixed. Subsequently, 20 mL of 2 M sodium hydroxide solution was added dropwise. The reaction was stirred at room temperature for 0.5 h. Finally, the final pink precipitate was collected by centrifugation, washed several times with deionized water and absolute ethanol, respectively, and then vacuum-dried at 50 °C for 12 h to obtain cubic CoSn(OH) 6 Precursor. Add 50 mg of the above cubic CoSn(OH) 6The precursor and 50 mg of ammonium tetrathiomolybdate were dispersed in 30 mL of deionized water. After the solution was fully dispersed, it was packaged in a polytetrafluoroethylene reactor, and centrifuged and washed after hydrothermal reaction at 160 °C for 6 h. , Vacuum drying. The obtained dried product was kept at 450...

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Abstract

The invention belongs to the technical field of inorganic nanomaterial preparation, and particularly relates to a preparation method of a 3D porous cobalt-tin-molybdenum three-metal catalyst. The preparation method comprises the following steps: dispersing a CoSn(OH)6 precursor and ammonium tetrathiomolybdate in water, and carrying out hydrothermal and calcining reactions to obtain the 3D porous cobalt-tin-molybdenum three-metal catalyst. The catalyst is of a porous cubic structure composed of cobalt disulfide, stannic oxide and molybdenum disulfide. The method disclosed by the invention is simple in synthesis and low in cost; and the prepared 3D porous cobalt-tin-molybdenum three-metal compound combines sulfide having high catalytic activity with oxide having good conductivity, so synergistic effect among the compounds can be exerted, and the performance of the catalyst in all aspects is improved. The catalyst has good application prospects when used as an electrode material for preparing hydrogen through catalytic electrolysis of water under an acidic condition.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic nanomaterials, and in particular relates to a preparation method of a 3D porous cobalt-tin-molybdenum trimetallic catalyst. Background technique [0002] Hydrogen energy is one of the most promising and clean energy sources to replace fossil fuels because of its high energy density, environmental friendliness, and renewable nature. Among them, water electrolysis hydrogen production is a relatively convenient hydrogen production method, which will not pollute the environment, and the obtained hydrogen product has high purity. At present, platinum and platinum-based materials are the best electrocatalysts for catalyzing the electrolysis of water to produce hydrogen, but their high cost, scarcity of resources, and poor durability greatly hinder their widespread application. Therefore, finding highly efficient, low-cost, and abundant non-noble metal electrocatalysts has become a top ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/051B01J35/10B01J37/03C25B1/04C25B11/06
CPCB01J27/0515B01J35/0013B01J35/0033B01J35/1014B01J35/1061B01J37/031C25B1/04C25B11/091Y02E60/36
Inventor 侯琳熙何倩刘梦颖黄少唯安航
Owner FUZHOU UNIV
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