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Three-dimensional porous nanometer catalyst preparation method

A nano-catalyst and three-dimensional porous technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve poor stability, single-phase properties of pure-phase nickel phosphide compounds, and low utilization rate of catalyst atoms and other problems, to achieve the effect of mild and easy-to-control conditions, high unit activity mass, and good stability

Active Publication Date: 2019-07-19
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of three-dimensional porous nano-catalyst and preparation method thereof, aim at solving the problem that the properties of pure-phase nickel phosphide compounds tend to be unitary, and when used as an electrocatalyst, the catalyst atom utilization rate (unit active mass) is low and the stability is poor The problem

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  • Three-dimensional porous nanometer catalyst preparation method
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  • Three-dimensional porous nanometer catalyst preparation method

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preparation example Construction

[0023] Correspondingly, an embodiment of the present invention provides a method for preparing a three-dimensional porous nanocatalyst, the three-dimensional porous nanocatalyst is a three-dimensional porous nanocatalyst of a copper-nickel-phosphorus compound material, the copper-nickel-phosphorus compound has a hollow core-shell structure, and the hollow The core-shell structure includes a phosphor-bronze compound skeleton, and a nickel phosphide shell layer formed on the phosphor-bronze compound skeleton, and between the phosphor-bronze compound skeleton and between the phosphor-bronze compound skeleton and the nickel phosphide shell There is a pore structure between the layer shells; the preparation method of the three-dimensional porous nanocatalyst comprises the following steps:

[0024] S01. Provide a copper source, dissolve the copper source in the ligand solution, and mix and process to form a precursor solution of copper and the ligand; under an inert atmosphere, carry...

Embodiment 1

[0044] A method for preparing a three-dimensional porous nanocatalyst, characterized in that the three-dimensional porous nanocatalyst is a three-dimensional porous nanocatalyst of a copper-nickel-phosphorus compound material, the copper-nickel-phosphorus compound has a hollow core-shell structure, and the hollow core-shell structure Comprising a phosphor-bronze compound skeleton, and a nickel phosphide shell layer formed on the phosphor-bronze compound skeleton, and between the phosphor-bronze compound skeletons, and between the phosphor-bronze compound skeleton and the nickel phosphide shell layer Pore ​​structure is arranged between; The preparation method of described three-dimensional porous nano-catalyst comprises the following steps:

[0045] S11. Weigh 2 millimoles of copper chloride, join in the solution of 20 milliliters of oleylamine purity greater than 20%, continue to carry out magnetic stirring, until the precursor that forms copper and oleylamine coordination; In...

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Abstract

The invention provides a three-dimensional porous nanometer catalyst preparation method, which comprises: providing a copper source, dissolving the copper source in a ligand solution, and mixing to form the precursor solution of the copper source and the ligand; under an inert atmosphere, carrying out a first heating reaction on the precursor solution to prepare nanometer copper particles; coolingthe reaction system after the first heating reaction to a temperature of lower than 120 DEG C, adding a nickel salt, and mixing to obtain a first mixed solution; adding a phosphorus source to the first mixed solution, and mixing to obtain a second mixed solution; and carrying out a second heating reaction on the second mixed solution under an inert atmosphere to prepare a copper-nickel-phosphoruscompound having a hollow core-shell structure.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials, and in particular relates to a three-dimensional porous nano catalyst and a preparation method thereof. Background technique [0002] The process of water being electrolyzed by direct current to generate hydrogen and oxygen is called electrolysis of water. When the current passes through water, hydrogen is formed by reducing water at the cathode, and oxygen is formed by oxidizing water at the anode. Electrolyzed water catalysts usually can greatly reduce the activation energy of electrolyzed water, thereby reducing the overpotential of electrolyzed water. [0003] Transition copper-phosphorus compounds are an important class of multifunctional materials, which have very broad application prospects in storage devices, catalysts, etc., so they have attracted the attention of many researchers. Among them, the regular surface of nickel phosphide has a very strong overall effect, which ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185
CPCB01J27/1853B01J35/23B01J35/33B01J35/397
Inventor 谷猛蔡超韩韶波
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA