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N-doped graphdiyne material and preparation method and application thereof

A graphyne, nitrogen-doped technology, applied in graphene, chemical instruments and methods, inorganic chemistry, etc., to achieve excellent performance, high catalytic efficiency, simple and easy preparation method

Active Publication Date: 2018-08-28
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Regarding the heteroatom doping of graphyne, there are related patent reports, such as CN104667953A discloses a nitrogen-doped graphyne, a preparation method and its use, wherein nitrogen is introduced in the form of nitrogen-containing gas, and nitrogen is expressed as sp 2 and sp 3 The form of hybridization is doped into graphyne; CN105645378A discloses a preparation method of heteroatom-doped graphyne, but in the specific operation process, it is found that in the disclosed nitrogen-doped graphyne, the nitrogen element is generally sp 2 and sp 3 The form of hybridization exists, and there are few nitrogen atoms in the form of sp hybridization. There is no detailed report on how nitrogen is doped in the form of sp hybridization.

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  • N-doped graphdiyne material and preparation method and application thereof
  • N-doped graphdiyne material and preparation method and application thereof
  • N-doped graphdiyne material and preparation method and application thereof

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Embodiment 1

[0051] A nitrogen-doped graphdiyne material, the preparation method of which is as follows:

[0052] (1) Grinding a carbon source and a nitrogen source in a mortar for 30 minutes with a mass ratio of 50:1 to obtain a mixture;

[0053] Wherein, the nitrogen source is melamine, and the carbon source is graphyne material.

[0054] (2) Under a nitrogen atmosphere, the mixture obtained in step (1) was heated up to 900° C. at a rate of 5° C. / min in a tube furnace, and kept for 3 hours to obtain a nitrogen-doped graphdiyne material.

Embodiment 2-4

[0056] The only difference with Example 1 is that in this example, the nitrogen source is dicyandiamide (Example 2), the composition (Example 3) of cyanamide and aminoacetonitrile, dicyandiamide and guanidine hydrochloride Composition (Example 4).

Embodiment 5

[0058] A nitrogen-doped graphdiyne material, the preparation method of which is as follows:

[0059] (1) Grinding the carbon source and the nitrogen source in a mortar for 5 minutes with a mass ratio of 5:1 to obtain a mixture;

[0060] Wherein, the nitrogen source is melamine, and the carbon source is graphyne material.

[0061] (2) Under an argon atmosphere, heat the mixture obtained in step (1) to 700° C. at a rate of 1° C. / min in a tube furnace, and keep it warm for 6 hours to obtain a nitrogen-doped graphdiyne material.

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Abstract

The invention provides a N-doped graphdiyne material and a preparation method and application thereof. In the N-doped graphdiyne material, a sp hybrid state nitrogen element is contained. The sp hybrid nitrogen atom is contained in the N-doped graphdiyne material, in other words, the N-doped graphdiyne material contains the nitrogen element existing in a carbon-nitrogen triple-bond mode.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and relates to a nitrogen-doped graphyne material and a preparation method and application thereof. Background technique [0002] Electrochemical catalytic reactions play a crucial role in energy conversion and storage. Noble metal-based catalysts have always been considered as ideal catalysts, but their high price and poor stability limit their wide application. In recent years, many efforts have been made to reduce the cost of catalysts and improve their catalytic activity. Among them, carbon materials have attracted researchers' close attention due to their low price, high catalytic activity and long-term stability (Liu, X. & Dai, L. Nat. Rev. Mater. 2016, 1, 16064). In heteroatom-doped carbon materials, nitrogen atom doping exhibits excellent performance (Guo, D. et al. Science 2016, 351, 361). With different carbon and nitrogen sources, different forms of nitrogen doping can ...

Claims

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Application Information

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IPC IPC(8): C01B32/205B01J27/24
CPCB01J27/24C01B2204/22B01J35/33
Inventor 王丹赵亚松万家炜张丽娟
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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