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Nitrogen-doped porous carbon material derived from zeolite imidazole framework material and preparation method of nitrogen-doped porous carbon material

A nitrogen-doped porous carbon and zeolite imidazole framework technology, applied in the field of non-metallic materials, can solve problems such as poor performance, weak water stability, secondary pollution, etc., and achieves good thermal stability, fewer types of raw materials, and efficient adsorption. Effect

Pending Publication Date: 2020-08-14
湖南垚恒环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing metal-organic materials have disadvantages such as weak water stability, easy to cause secondary pollution, and poor performance.

Method used

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  • Nitrogen-doped porous carbon material derived from zeolite imidazole framework material and preparation method of nitrogen-doped porous carbon material
  • Nitrogen-doped porous carbon material derived from zeolite imidazole framework material and preparation method of nitrogen-doped porous carbon material
  • Nitrogen-doped porous carbon material derived from zeolite imidazole framework material and preparation method of nitrogen-doped porous carbon material

Examples

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Effect test

Embodiment 1

[0031] A nitrogen-doped porous carbon material derived from a two-dimensional zeolitic imidazole framework (ZIF-L).

[0032] The concentration of potassium hydroxide in this embodiment case is 0.5mol / L.

[0033] A method for preparing the nitrogen-doped porous carbon material of the above-mentioned embodiment, comprising the following steps:

[0034] (1) Dissolve zinc nitrate hexahydrate and di-methylimidazole in deionized water respectively, then slowly pour the zinc nitrate hexahydrate solution into the di-methylimidazole solution and stir for 4 hours (rotating speed is 150r / min), A white zeolitic imidazole framework (ZIF-L) was obtained. Wherein the molar ratio of zinc chloride hexahydrate, bis-methylimidazole and deionized water is 1:4:2264. The product obtained by stirring is centrifuged, washed and dried at a speed of 4000r / min; washed 3 to 5 times with deionized water; then vacuum-dried at 60°C for 10 hours to obtain a zeolite imidazole framework (ZIF-L).

[0035] (2...

Embodiment 2

[0038] A nitrogen-doped porous carbon material, prepared basically the same as the nitrogen-doped porous carbon material in Example 1, except that the concentration of potassium hydroxide in Example 2 is 0.25 mol / L.

[0039] The nitrogen-doped porous carbon material prepared in Example 2 is designated as NPC-0.25.

Embodiment 3

[0041] A nitrogen-doped porous carbon material, prepared basically the same as the nitrogen-doped porous carbon material in Example 1, except that the concentration of potassium hydroxide in Example 2 is 1 mol / L.

[0042] The nitrogen-doped porous carbon material prepared in Example 3 is designated as NPC-1.

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Abstract

The invention discloses a nitrogen-doped porous carbon material derived from a zeolite imidazole framework material and a preparation method of the nitrogen-doped porous carbon material. The preparation method comprises the following steps: respectively dispersing zinc nitrate hexahydrate and dimethylimidazole into deionized water, mixing and self-assembling to generate the two-dimensional zeoliteimidazole framework material; and putting the two-dimensional zeolite imidazole skeleton material into a potassium hydroxide solution to be activated, and then putting the activated two-dimensional zeolite imidazole skeleton material into nitrogen to be subjected to two-step high-temperature calcination to finally obtain the nitrogen-doped porous carbon material. The composite material has the advantages of good thermal stability, good water stability, high adsorption efficiency, no metal and the like and is an adsorbent which can be widely used and can be used for efficiently treating antibiotic wastewater, the preparation method of the materiall has the advantages that the operation is simple, the types of raw materials are few, the cost is low and the like, and meets the actual production requirements, and can be used for preparing the nitrogen-doped porous carbon material in a low-cost and large-scale manner.

Description

technical field [0001] The invention belongs to the field of non-metallic materials, and relates to a nitrogen-doped porous carbon material derived from a zeolite imidazole framework material and a preparation method thereof. Background technique [0002] Metal-organic framework (MOF) is a kind of porous material with large porosity, large surface area and adjustable pore structure, which has great application prospects in the environmental field. Due to the weak coordination of metallic and organic bonds, MOFs are often not very water-stable. Therefore, it is necessary to modify MOFs to expand their applications. Metal-organic frameworks are promising templates or precursors that can be transformed into stable porous carbon materials by high-temperature pyrolysis in inert gases. During the pyrolysis process, the organic linkers in MOFs are gradually transformed into carbon materials, and the metal centers are precipitated. Notably, the derived porous carbon materials inh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02B01J20/28B01J20/30C01B32/05C02F1/28C08G83/00C02F101/38C02F101/36
CPCB01J20/02C08G83/008C01B32/05B01J20/3078B01J20/28064B01J20/28066C02F1/281C02F2101/36C02F2101/38
Inventor 钟仁华钟雪鑫蔡红春袁洁彭诗阳李俊杰
Owner 湖南垚恒环境科技有限公司
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