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A metal-doped porous carbon material containing nitrogen and oxygen, its preparation method and application

A porous carbon material and metal doping technology, which is applied in the preparation/purification of carbon, hybrid capacitor electrodes, etc., can solve the problems of complexity, uneven distribution of nitrogen atoms and oxygen atoms, and achieve large pore volume and rich pore size distribution , the effect of simple operation

Active Publication Date: 2022-05-24
ENERGY RESOURCES INST HEBEI ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, in order to make the final product contain nitrogen and oxygen elements, it is generally realized by adding nitrogen-containing or oxygen-containing compounds to the raw materials as the source of nitrogen and oxygen. The whole process is more complicated, and the most important thing is to make nitrogen atoms and Oxygen atoms are unevenly distributed in carbon materials

Method used

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  • A metal-doped porous carbon material containing nitrogen and oxygen, its preparation method and application
  • A metal-doped porous carbon material containing nitrogen and oxygen, its preparation method and application
  • A metal-doped porous carbon material containing nitrogen and oxygen, its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Step 1: Pretreatment of precursors:

[0043] Dissolve 250 mg of cucurbit[5]uril in 25 mL of 6.0 mol L -1 In the HCl solution, sonicated for 30 minutes, then poured 20 mL of methanol into the solution and continued to sonicate for 30 minutes, and vacuum-dried at 120 °C for 5 hours to obtain the pretreated cucurbit[5]uril.

[0044] Step 2: Metal Doping

[0045] 200 mg of pretreated cucurbit[5]uril and 10 mg of Fe(NO 3 ) 3 ·9H2O was dissolved in 10 mL of deionized water, sonicated for 1 hour, and dried at 120 for 5 hours to obtain iron-doped cucurbit[5]uril.

[0046] Step 3: Carbonization

[0047] The iron-doped cucurbit[5]urea was put into a carbonization furnace and carbonized under vacuum conditions. During the carbonization process, N was continuously fed at a rate of 30 mL / min. 2 / Ar was first heated from room temperature to 200±5°C at a rate of 5°C / min for 2 hours, then continued to heat up to 900±2°C at a rate of 5°C / min for 1 hour, and then slowly lowered to r...

Embodiment 2

[0050] Step 1: Pretreatment of precursors:

[0051] Dissolve 250 mg of cucurbit[6]uril in 25 mL of 6.0 mol L -1 In the HCl solution, sonicated for 30 minutes, then poured 20 mL of methanol into the solution and continued to sonicate for 30 minutes, and vacuum-dried at 120 °C for 5 hours to obtain the pretreated cucurbit[6]uril.

[0052] Step 2: Metal Doping

[0053] 200 mg of pretreated cucurbit[6]uril and 10 mg of Ni(NO 3 ) 2 ·6H 2 O was dissolved in 10 mL of deionized water, sonicated for 1 hour, and dried at 120 for 5 hours to obtain iron-doped cucurbit[6]uril.

[0054] Step 3: Carbonization

[0055] The iron-doped cucurbit[6]uril was put into a carbonization furnace and carbonized under vacuum conditions. During the carbonization process, N was continuously fed at a rate of 30 mL / min. 2 / Ar was first heated from room temperature to 200±5°C at a rate of 5°C / min for 2 hours, then continued to heat up to 900±2°C at a rate of 5°C / min for 1 hour, and then slowly lowered to ...

Embodiment 3

[0058] Step 1: Pretreatment of precursors:

[0059] Dissolve 250 mg of cucurbit[8]uril in 25 mL of 6.0 mol L -1 In the HCl solution, sonicated for 30 minutes, then poured 20 mL of methanol into the solution and continued to sonicate for 30 minutes, and vacuum-dried at 120 °C for 5 hours to obtain the pretreated cucurbit[8]uril.

[0060] Step 2: Metal Doping

[0061] 200 mg of pretreated cucurbit[8]uril and 10 mg of Cu(NO 3 ) 2 ·3H 2 O was dissolved in 10 mL of deionized water, sonicated for 1 hour, and dried at 120 for 5 hours to obtain iron-doped cucurbit[8]uril.

[0062] Step 3: Carbonization

[0063] The iron-doped cucurbit[8]urea was put into a carbonization furnace and carbonized under vacuum conditions. During the carbonization process, N was continuously fed at a rate of 30 mL / min. 2 / Ar was first heated from room temperature to 200±5°C at a rate of 5°C / min for 2 hours, then continued to heat up to 900±2°C at a rate of 5°C / min for 1 hour, and then slowly lowered t...

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Abstract

The invention relates to a metal-doped porous carbon material containing nitrogen and oxygen and its preparation method and application. It uses cucurbituril as a raw material, and performs metal doping after pretreatment to obtain metal-doped cucurbituril, which is finally carbonized The porous carbon material is obtained by processing. The raw material contains nitrogen and oxygen, and the content is uniform. Based on the spatial structure of cucurbituril, it is doped with metal to obtain uniformly doped cucurbitacin, and then the preparation is completed after one carbonization treatment. . The whole process avoids the addition of templates and activators, and the operation is simple and the preparation cycle is short. The metal-doped porous carbon material containing nitrogen and oxygen obtained by the method of the present invention has uniform nitrogen atoms, oxygen atoms and metal elements, rich and uniform pore size distribution, large specific surface area and pore volume, and excellent electrical properties. performance.

Description

technical field [0001] The invention belongs to the field of carbon materials, and in particular relates to a nitrogen- and oxygen-containing metal-doped porous carbon material and a preparation method and application thereof. Background technique [0002] At present, carbon materials are widely used in adsorbents, catalysts, fuel cells, electrode materials for secondary batteries, supercapacitors, composite materials, gas sensors, solar cells, and various electronic devices due to their excellent porous properties. [0003] Carbon materials have different properties due to their different functional elements, doping elements, and pore volume. Nitrogen, oxygen and metal elements have important effects on the cycle times and electrical properties of carbon materials. In the prior art, in order to make the final product with nitrogen and oxygen elements, it is generally realized by adding nitrogen-containing or oxygen-containing compounds to the raw materials as the nitrogen ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/34C01B32/05
CPCH01G11/24H01G11/34C01B32/05Y02E60/13
Inventor 张利辉王莎莎刘振法孙国秀胡春红李晓贺王静月
Owner ENERGY RESOURCES INST HEBEI ACADEMY OF SCI
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