Nitrogen-doped carbon microcubes derived from metal organic framework as well as preparation method and application of nitrogen-doped carbon microcubes

A metal-organic framework and cube technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, hybrid capacitor electrodes, etc., can solve the problems of complex preparation methods, and achieve simple preparation methods, high specific surface area, and good scalability. Effect

Pending Publication Date: 2022-03-08
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The invention patent with the application number CN202010090521.6, a MOF-5-based Fe / N / C oxygen reduction electrocatalyst and its preparation method and application discloses a preparation method for preparing MOF-5 microcubes, but the preparation method is complicated, Requires re-addition of metal-containing solution to solution stirred at high temperature

Method used

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  • Nitrogen-doped carbon microcubes derived from metal organic framework as well as preparation method and application of nitrogen-doped carbon microcubes
  • Nitrogen-doped carbon microcubes derived from metal organic framework as well as preparation method and application of nitrogen-doped carbon microcubes
  • Nitrogen-doped carbon microcubes derived from metal organic framework as well as preparation method and application of nitrogen-doped carbon microcubes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Add 0.5 g of K30 into the beaker, then pour 45 mL of DMF, and stir until K30 is completely dissolved to obtain a uniform solution;

[0038] (2) Add 300 mg of zinc nitrate and 50 mg of terephthalic acid into the solution of (1), continue stirring until completely dissolved to obtain a uniform solution, and then transfer the solution to a 50 mL high-temperature reaction kettle ;

[0039] (3) Put the reaction kettle with the solution in an oven for solvothermal reaction at 165 °C for 22 hours;

[0040] (4) Wash the sample after solvothermal reaction with ethanol and centrifuge to obtain a light yellow precipitate, put the precipitate in an oven at 60 °C, and dry it for more than 24 hours;

[0041] (5) After grinding and dispersing the dried light yellow powder, put it in a ceramic boat, put the porcelain boat in a tube furnace, and after 20 minutes of nitrogen gas, raise the temperature to 900 °C with a heating rate of 5 °C / min , kept at room temperature for 10 hours...

Embodiment 2

[0045] (1) Add 1.5 g of K30 into the beaker, then pour 40 mL of DMF, and stir until K30 is completely dissolved to obtain a uniform solution;

[0046] (2) Add 400 mg of zinc nitrate and 50 mg of aminoterephthalic acid into the solution of (1), continue to stir until completely dissolved to obtain a uniform solution, and then transfer the solution to a 50 mL high-temperature reactor middle;

[0047] (3) Put the reaction kettle with the solution in an oven for solvothermal reaction at 175 °C for 12 hours;

[0048] (4) Wash the sample after solvothermal reaction with ethanol and centrifuge to obtain a light yellow precipitate, put the precipitate in an oven at 60 °C, and dry it for more than 24 hours;

[0049] (5) After grinding and dispersing the dried light yellow powder, put it in a ceramic boat, put the porcelain boat in a tube furnace, and after passing nitrogen for 20 minutes, raise the temperature to 1500 °C with a heating rate of 10 °C / min , kept warm for 1 hour, and na...

Embodiment 3

[0053] (1) Add 1 g of K30 into the beaker, then pour 30 mL of DMF, and stir until K30 is completely dissolved to obtain a uniform solution;

[0054] (2) Add 450 mg of zinc nitrate and 180 mg of aminoterephthalic acid into the solution of (1), continue to stir until completely dissolved to obtain a uniform solution, and then transfer the solution to a 50 mL high-temperature reaction kettle middle;

[0055] (3) Put the reaction kettle with the solution in an oven, and conduct a solvothermal reaction at 180 °C for 8 hours;

[0056] (4) Wash the sample after solvothermal reaction with ethanol and centrifuge to obtain a light yellow precipitate, put the precipitate in an oven at 60 °C, and dry it for more than 24 hours;

[0057] (5) After grinding and dispersing the dried light yellow powder, put it in a ceramic boat, put the porcelain boat in a tube furnace, and after passing in nitrogen for 20 minutes, raise the temperature to 900 °C with a heating rate of 6 °C / min , kept warm ...

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Abstract

The invention belongs to the field of inorganic non-metallic materials and electrochemistry, and discloses a metal organic framework-derived nitrogen-doped carbon microcube as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) adding a zinc salt, a ligand and polyvinylpyrrolidone into an organic solvent, stirring, putting into a reaction kettle, putting the reaction kettle into a drying oven at 165-200 DEG C, reacting for 1-22 hours, cooling, cleaning, and preserving heat at 60 DEG C for more than 24 hours to obtain metal organic framework particles; and (2) placing the dried metal organic framework particles in a hearth, heating to 900-1500 DEG C, preserving heat for 1-10 hours, and naturally cooling to room temperature to obtain the nitrogen-doped carbon microcubes. The method is simple in preparation, easy to operate and low in cost, and the obtained nitrogen-doped carbon microcubes have very high application value in the fields of electro-catalysis and energy storage.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials and electrochemistry, in particular to a nitrogen-doped carbon microcube derived from a metal-organic framework, a preparation method thereof, and an application in the field of electrocatalysis or supercapacitor. Background technique [0002] With the continuous consumption of non-renewable energy in the world, the research, development and utilization of renewable energy are becoming more and more urgent. In particular, the emergence of new materials can often bring unexpected surprises to the field of new energy. Therefore, it is very meaningful to explore and study new materials. Metal-organic framework (MOF) is a new type of material formed by the coordination between metal sites and organic ligands. Due to the dual advantages of metal ions and organic complexes, metal oxides, carbon materials and metal / carbon composites can be derived in situ. Derivative materials can inher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24B01J27/24B01J35/00B01J35/10
CPCH01G11/24B01J27/24B01J35/0033B01J35/1023B01J35/1028B01J35/1061B01J35/1057B01J35/1019
Inventor 原长洲张金洋张亚敏梁龙伟侯林瑞
Owner UNIV OF JINAN
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