Preparation method of nickel carbide nanometer material with different morphologies

A nanomaterial, nickel carbide technology, applied in the field of material science, can solve the problem of less special morphology

Inactive Publication Date: 2021-06-08
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing nickel carbide nanomaterials with different shapes, so as to solve the technical problem that the morphology of nickel carbide nanomaterials is mostly spherical and the special shape is less.

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  • Preparation method of nickel carbide nanometer material with different morphologies
  • Preparation method of nickel carbide nanometer material with different morphologies
  • Preparation method of nickel carbide nanometer material with different morphologies

Examples

Experimental program
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Embodiment 1

[0026] In this embodiment, the preparation of nickel carbide nanomaterials whose morphology is irregular nanosheets includes the following steps:

[0027] Step 1, preparing sodium sulfate solution and triethanolamine solution respectively, mixing the two solutions according to the mol ratio of sodium sulfate and triethanolamine as 4:3, and recording it as solution A, then adding potassium tetracyanonickelate solution in solution A , adding ammonia solution as precipitant, adding absolute ethanol as dispersant; wherein, the volume ratio of potassium tetracyanonickelate solution to solution A is 1:1, the volume ratio of ammonia solution to solution A is 1:40, no The volume ratio of water ethanol to solution A is 1:20;

[0028] Step 2, sealing the mixed solution obtained in Step 1 in a hydrothermal reaction kettle, performing a solvothermal reaction at 30° C. for 24 hours, and then naturally cooling to room temperature;

[0029] Step 3: Centrifuge the reaction product obtained i...

Embodiment 2

[0033] In this embodiment, the preparation of nickel carbide nanomaterials whose morphology is spherical nanoparticles includes the following steps:

[0034] Step 1, preparing sodium sulfate solution and triethanolamine solution respectively, mixing the two solutions according to the mol ratio of sodium sulfate and triethanolamine as 4:3, and recording it as solution A, then adding potassium tetracyanonickelate solution in solution A , adding ammonia solution as precipitant, adding absolute ethanol as dispersant; wherein, the volume ratio of potassium tetracyanonickelate solution to solution A is 1:1, the volume ratio of ammonia solution to solution A is 1:40, no The volume ratio of water ethanol to solution A is 1:20;

[0035] Step 2, sealing the mixed solution obtained in Step 1 in a hydrothermal reaction kettle, performing a solvothermal reaction at 60° C. for 24 hours, and then naturally cooling to room temperature;

[0036] Step 3: Centrifuge the reaction product obtaine...

Embodiment 3

[0040] In this embodiment, the preparation of nickel carbide nanomaterials whose morphology is regular tetragonal nanosheets includes the following steps:

[0041] Step 1, preparing sodium sulfate solution and triethanolamine solution respectively, mixing the two solutions according to the mol ratio of sodium sulfate and triethanolamine as 4:3, and recording it as solution A, then adding potassium tetracyanonickelate solution in solution A , adding ammonia solution as precipitant, adding absolute ethanol as dispersant; wherein, the volume ratio of potassium tetracyanonickelate solution to solution A is 1:1, the volume ratio of ammonia solution to solution A is 1:40, no The volume ratio of water ethanol to solution A is 1:20;

[0042] Step 2, sealing the mixed solution obtained in Step 1 in a hydrothermal reaction kettle, performing a solvothermal reaction at 90° C. for 24 hours, and then naturally cooling to room temperature;

[0043] Step 3: Centrifuge the reaction product o...

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Abstract

The invention discloses a nickel carbide nano material with different morphologies and a preparation method thereof. The preparation method comprises the following steps: respectively preparing a sodium sulfate solution and a triethanolamine solution, mixing the two solutions, and then adding a potassium tetracyanonickelate solution, an ammonia water solution and absolute ethyl alcohol; sealing the mixed solution in a hydrothermal reaction kettle, and carrying out solvothermal reaction; centrifugally separating and washing the reaction product, and staying overnight under a vacuum condition to obtain a dark green precursor; and roasting the dark green precursor to obtain the nickel carbide nano material. The method is simple to operate and low in cost, and the product is high in purity, good in crystal form, controllable and good in reproducibility. The prepared nickel carbide nano-material with different morphologies is of three structures: irregular nano-sheets, spherical nano-particles and regular quadrangles, and the specific surface area of the material is effectively increased through the regular and ordered nickel carbide nano-materials, so that the active sites of the material are increased, and the performance of the material is improved.

Description

technical field [0001] The invention belongs to the technical field of material science, and in particular relates to a preparation method of nickel carbide nanomaterials with different shapes. Background technique [0002] Transition metal carbides have good mechanical and chemical stability. And because of its unique electronic structure and earth abundance, it can be used as an alternative to expensive noble metal electrocatalysts. Recently, nickel carbide has attracted researchers' attention due to its excellent catalytic activity, high chemical stability and corrosion resistance. Due to the good catalytic performance of nickel-based catalysts in many reactions, low-cost nickel-based catalysts have gained attention in various reactions, such as catalytic oxidation of methane, vertical growth of high-density carbon nanotubes on copper foil , with Ni 3 C-graphene nanocharged catalyst for oxygen reduction and hydrogen evolution, Ni 3 C-Assisted Catalytic Thermal Chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/914B82Y40/00
CPCB82Y40/00C01P2002/72C01P2004/03C01P2004/22C01P2004/32C01P2006/40C01B32/914
Inventor 吴大军叶蓉蓉张静汝陈欣如邹鑫润陶石张强胜钱斌
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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