Nitrogen-doped carbon nano composite material coated by hollow copper doped monocrystalline silicon and preparation method

A nanocomposite material, nitrogen-doped carbon technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc. Insufficient and other problems, to achieve the effect of rigorous and mature preparation process, excellent catalytic activity, and good electrical conductivity

Inactive Publication Date: 2018-12-28
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the instability and insufficient active sites of non-noble metal catalysts seriously hinder their further development and application.

Method used

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  • Nitrogen-doped carbon nano composite material coated by hollow copper doped monocrystalline silicon and preparation method
  • Nitrogen-doped carbon nano composite material coated by hollow copper doped monocrystalline silicon and preparation method
  • Nitrogen-doped carbon nano composite material coated by hollow copper doped monocrystalline silicon and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A hollow copper-doped cobalt-nickel oxide-coated nitrogen-doped carbon nanocomposite material comprises a hollow nitrogen-doped carbon material, and the hollow nitrogen-doped carbon material is coated with copper-doped cobalt-nickel oxide. The hollow nitrogen-doped carbon material has a hollow polyhedral structure.

[0044] The preparation method of the nitrogen-doped carbon nanocomposite material coated with hollow copper-doped cobalt-nickel oxide is as follows:

[0045] Step 1: Coat a layer of polyaniline on the surface of ZIF-67 to obtain ZIF-67@polyaniline composite material, and obtain hollow polyaniline by acid etching the obtained ZIF-67@polyaniline composite material:

[0046] Disperse the ZIF-67 powder in 100 mL of water, and disperse uniformly by ultrasonic for 20 min to obtain a dispersion liquid, the concentration of ZIF-67 is 1 mg / mL. Then 20 μL of aniline (Sigma-Aldrich) monomer was added into the above dispersion liquid to make it uniformly dispersed. S...

Embodiment 2

[0060] Similar to the nitrogen-doped carbon nanocomposite material coated with hollow copper-doped cobalt-nickel oxide in Example 1, the difference is that the annealing temperature described in step 5 in Example 1 is changed to 450 ° C, and the obtained product is marked as Hollow copper-doped cobalt-nickel oxide-coated nitrogen-doped carbon nanocomposite-1.

Embodiment 3

[0062] Similar to the nitrogen-doped carbon nanocomposite material coated with hollow copper-doped cobalt-nickel oxide in Example 1, the difference is that the heat treatment temperature in the argon atmosphere described in step 3 in Example 1 is changed to 700 ° C, and the obtained The product is labeled as hollow copper-doped cobalt-nickel oxide-coated nitrogen-doped carbon nanocomposite-2.

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Abstract

The invention provides a nitrogen-doped carbon nano composite material coated by hollow copper doped monocrystalline silicon and a preparation method. The nitrogen-doped carbon nano composite materialcoated by hollow copper doped monocrystalline silicon is characterized by comprising a hollow nitrogen-doped carbon material, the hollow nitrogen-doped carbon material is externally coated with copper doped cobaltous nickel oxide. The prepared composite material has the characteristic of uniform structure and morphology, the ZIF-67 and polyaniline derived hollow nitrogen-doped porous carbon material supports the hollow polyhedral structure of the composite material, a doped copper element changes charge distribution of the eigenstate of cobaltous nickel oxide, and its catalytic performance isimproved; the copper doped cobaltous nickel oxide uniformly grow outside the hollow nitrogen-doped carbon material, and the problem is avoided that metallic oxide is easy to agglomerate. The nitrogen-doped carbon nano composite material has the advantages of being large in specific surface area, good in electrical conductivity, stable in physicochemical property, superior in electrochemical performance and the like.

Description

technical field [0001] The invention belongs to the technical field of heteroatom-doped double metal oxide-carbon materials, in particular to a nitrogen-doped carbon nanocomposite material coated with hollow copper-doped cobalt-nickel oxide and a preparation method thereof. Background technique [0002] Electrocatalytic hydrolysis has attracted great research interest as a sustainable hydrogen production method. Among the two half-cell reactions for water electrolysis, the anodic oxygen evolution reaction (OER) involves an energetically demanding four-electron transfer process that significantly reduces the efficiency of water splitting. Therefore, the development of efficient catalysts for OER remains one of the most important challenges in water splitting for hydrogen production. Noble metal oxides such as IrO x and RuO x So far, it is the most active catalyst for OER as an electrocatalyst, but its scarcity, high cost, and low durability are not conducive to its large-s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/10C25B1/04C25B11/06
CPCB01J27/24B01J35/0033B01J35/0073B01J35/1004C25B1/04C25B11/04Y02E60/36
Inventor 刘天西赖飞立朱晓波缪月娥
Owner DONGHUA UNIV
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