A kind of transition metal phosphide nanomaterial and its preparation method and application

A transition metal and nanomaterial technology, applied in the direction of phosphide, phosphorus compound, chemical instruments and methods, etc., can solve the problems of complex preparation method, poor catalyst stability, poor repeatability, etc.

Active Publication Date: 2021-05-14
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current two-component transition metal phosphide catalysts have low catalytic activity due to their simple morphological structure (such as non-porous structure, etc.), and the reactive species cannot fully react.
[0003] In recent years, three-component catalysts with complex three-dimensional structures and high catalytic activity have been developed, but these catalysts have poor stability, and the preparation methods are complicated and the reproducibility is poor, which is not conducive to the realization of industrial scale production

Method used

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  • A kind of transition metal phosphide nanomaterial and its preparation method and application
  • A kind of transition metal phosphide nanomaterial and its preparation method and application
  • A kind of transition metal phosphide nanomaterial and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Example 1 NiCoP / CoP / CoP 2 Preparation of three-component transition metal phosphide nanomaterials

[0058] Preparation of Ni-Co-glycerol precursor

[0059] Dissolve nickel nitrate and cobalt nitrate in a polytetrafluoroethylene reactor filled with isopropanol, then add glycerol and water to form a mixed solution. In the mixed solution, the concentration of cobalt nitrate is 0.220mM, the concentration of nickel nitrate is 0.110mM, the concentration of isopropanol is 0.457M, the concentration of glycerol is 0.071M, and the concentration of water is 0.056mM. Then place the polytetrafluoroethylene reactor in a homogeneous reactor for heating, make the mixed solution react at a temperature of 190° C. for 12 hours at a stirring speed of 15 r / min, cool the obtained product at room temperature, and then The product was centrifuged, washed once with ethanol and water, and then dried at 105 °C to obtain the Ni-Co-glycerol precursor.

[0060] NiCo 2 o 4 preparation of

...

Embodiment 2

[0064] Example 2 NiCoP / CoP / CoP 2 Preparation of three-component transition metal phosphide nanomaterials

[0065] Preparation of Ni-Co-glycerol precursor

[0066] Dissolve nickel nitrate and cobalt nitrate in a polytetrafluoroethylene reactor filled with isopropanol, then add glycerol and water to form a mixed solution. In the mixed solution, the concentration of cobalt nitrate is 0.264mM, the concentration of nickel nitrate is 0.066mM, the concentration of isopropanol is 0.457M, the concentration of glycerol is 0.071M, and the concentration of water is 0.056mM. Then place the polytetrafluoroethylene reactor in a homogeneous reactor for heating, make the mixed solution react at a temperature of 190° C. for 12 hours at a stirring speed of 15 r / min, cool the obtained product at room temperature, and then The product was centrifuged, washed once with ethanol and water, and then dried at 105 °C to obtain the Ni-Co-glycerol precursor.

[0067] NiCo 2 o 4 preparation of

...

Embodiment 3

[0070] Example 3 NiCoP / CoP / CoP 2 Preparation of three-component transition metal phosphide nanomaterials

[0071] Preparation of Ni-Co-glycerol precursor

[0072] Dissolve nickel nitrate and cobalt nitrate in a polytetrafluoroethylene reactor filled with isopropanol, then add glycerol and water to form a mixed solution. In the mixed solution, the concentration of cobalt nitrate is 0.165mM, the concentration of nickel nitrate is 0.165mM, the concentration of isopropanol is 0.457M, the concentration of glycerol is 0.071M, and the concentration of water is 0.056mM. Then place the polytetrafluoroethylene reactor in a homogeneous reactor for heating, make the mixed solution react at a temperature of 190° C. for 12 hours at a stirring speed of 15 r / min, cool the obtained product at room temperature, and then The product was centrifuged, washed once with ethanol and water, and then dried at 105 °C to obtain the Ni-Co-glycerol precursor.

[0073] NiCo 2 o 4 preparation of

...

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Abstract

The invention provides a transition metal phosphide nanomaterial and its preparation method and application. The transition metal phosphide nanomaterial has a porous and hollow structure and contains NiCoP, CoP and CoP 2 , the particles of the transition metal phosphide nanomaterial are spherical, and the sphere wall is composed of small particles with a diameter of 5-20nm, and there are gaps between the particles; the specific surface area of ​​the transition metal phosphide nanomaterial is 20-100m 2 / g. The transition metal phosphide nano material provided by the invention has high catalytic activity and good stability, and the preparation method is simple and repeatable, which is beneficial to realizing industrial scale production.

Description

technical field [0001] The invention belongs to the technical field of metal phosphide nanometer materials. Specifically, the present invention relates to a transition metal phosphide nanomaterial and its preparation method and application. Background technique [0002] As a non-noble metal catalyst, transition metal phosphides have attracted much attention due to their favorable electronic structure effects, high electrical conductivity, good durability, and unique electrocatalytic performance in a wide range of pH. Due to the synergistic catalytic effect of each component, the electrocatalytic performance of the two-component transition metal phosphide catalyst is significantly better than that of the single-component metal phosphide catalyst. Two-component transition metal phosphide catalysts can realize the rearrangement of atoms and the adjustment of electronic structure on the heterointerface by rationally combining different components, thereby regulating the binding...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/08B82Y30/00B82Y40/00H01M4/86H01M4/90H01M8/1009
CPCB82Y30/00B82Y40/00C01B25/088C01P2002/72C01P2004/04C01P2004/34C01P2004/82C01P2006/12H01M4/8647H01M4/90H01M8/1009Y02E60/50Y02P70/50
Inventor 陈帅樊卫斌乔岩
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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