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Graphene provided with polynitrogen coordination structure and preparation method and application thereof

A graphene and coordination technology, applied in the fields of catalysts, new materials, new energy and energy conservation and environmental protection, can solve the problems of ununified graphene preparation methods, difficulties in realization, and difficulties in compounding, and achieve efficient catalytic active sites, flexible regulation and control. ability, efficient catalytic activity

Active Publication Date: 2019-10-25
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Current preparation methods for single-atom catalysts are costly and have low yields
[0010] At present, at home and abroad, graphene, single-atom catalysts, catalysts for carbon dioxide, catalysts for oxygen, and catalysts for formaldehyde have completely different preparation processes. They are usually prepared by completely separate processes. difficulty
[0011] There is currently no preparation method for graphene that unifies graphene, single-atom catalysts, and catalysts for carbon dioxide, oxygen, and formaldehyde

Method used

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  • Graphene provided with polynitrogen coordination structure and preparation method and application thereof
  • Graphene provided with polynitrogen coordination structure and preparation method and application thereof
  • Graphene provided with polynitrogen coordination structure and preparation method and application thereof

Examples

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Embodiment 1

[0105] Provide graphite-containing slabs and liquids. The mass of the liquid is 30 times the mass of graphite-containing slabs. Graphite strips are coated with titanium for electrolysis, and ceramic sheets are placed between each titanium strip to prevent short circuits. ; Graphite: titanium: the mass ratio of ceramics is 60%: 20%: 20%. The graphite strip is 1cm wide, and the number of slats is 11. The area of ​​each slat is 0.2 square meters. The slats are arranged in parallel, and the distance between adjacent slats is 2 cm. The slats are isolated from each other and are airtight. Place the graphite strips in the electrolyte 1 and electrolyte 2 in turn, conduct electrolysis at room temperature with direct current, with a voltage of 1-8V (the voltage may rise spontaneously during the electrolysis process), and electrolyze each electrolyte for 24 hours. Electrolyte 1-perchloric acid aqueous solution 65%, electrolyte 2-ferric chloride, urea, melamine aqueous dispersion, the con...

Embodiment 2

[0107] Provide graphite-containing slabs and liquids. The mass of the liquid is 30 times the mass of graphite-containing slabs. Graphite strips are coated with titanium for electrolysis, and ceramic sheets are placed between each titanium strip to prevent short circuits. ; Graphite: titanium: the mass ratio of ceramics is 60%: 20%: 20%. The graphite strip is 1cm wide, and the number of slats is 11. The area of ​​each slat is 0.2 square meters. The slats are arranged in parallel, and the distance between adjacent slats is 2 cm. The slats are isolated from each other and are airtight. The graphite strips were placed in the electrolyte solution 1, electrolyte solution 2, and electrolyte solution 3 respectively in turn, and electrolyzed at room temperature by direct current, with a voltage of 1-8V, and each electrolyte solution was electrolyzed for 24 hours. Electrolyte 1-perchloric acid aqueous solution 65%, electrolyte 2-ferric chloride, urea, melamine aqueous dispersion, the co...

Embodiment 3

[0109] Provide graphite-containing slabs and liquids. The mass of the liquid is 30 times the mass of graphite-containing slabs. Graphite strips are coated with titanium for electrolysis, and ceramic sheets are placed between each titanium strip to prevent short circuits. ; Graphite: titanium: the mass ratio of ceramics is 60%: 20%: 20%. The graphite strip is 1cm wide, and the number of slats is 11. The area of ​​each slat is 0.2 square meters. The slats are arranged in parallel, and the distance between adjacent slats is 2 cm. The slats are isolated from each other and are airtight. The intercalated graphite strips are halogen intercalated graphite strips, which are obtained by intercalating halogen ions in graphite under the condition of electrification and electrolysis. Graphite strips are used as electrodes, placed in a water-in-salt electrolyte, energized and electrolyzed to obtain chlorine-intercalated graphite. The concentration of lithium chloride in the water-in-salt ...

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Abstract

The invention discloses graphene provided with a polynitrogen coordination structure and a preparation method and application thereof. The graphene contains 1-5 atomic layers, contains elements such as carbon, oxygen, nitrogen and hydrogen, and meanwhile contains at least one ofmetallic elements of iron, cobalt and nickel; the graphene has a catalytic active site of a polynitrogen coordination transition metal, and the coordination number of the nitrogen to metal is between 4 and 5, the graphene has efficient and stable monoatomic metal catalytic active site, and the graphene has high electrocatalytic performance for carbon dioxide, oxygen and formaldehyde. The graphene has the characteristics of easy dispersibility, easy processing and easy functioning, and functions of electric conduction, heat dissipation, infrared ray electric heating releasing and electromagnetic shielding are easily achieved.

Description

technical field [0001] The invention relates to a graphene with a multi-nitrogen coordination structure and a preparation method and application thereof, belonging to the fields of catalysts, new materials, new energy sources, energy conservation and environmental protection, and the like. Background technique [0002] Graphene has a large specific surface area, excellent electrical conductivity, thermal conductivity and electrothermal performance, good stability, and can be dispersed and processed. Generally graphene has better chemical and electrochemical stability than metals. Academically, the discoverer of graphene won the 2010 Nobel Prize in Physics; in terms of technological innovation, many fields around the world pay attention to graphene, and the Chinese government and local governments at all levels are paying more and more attention to the graphene industry. China's graphite reserves and output account for more than 70% of the world's. For example, graphite can ...

Claims

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Application Information

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IPC IPC(8): C01B32/19C01B32/225C09D1/00C09D5/24C09D5/08B01J31/18
CPCC09D1/00C09D5/24C09D5/08C01B32/19C01B32/225B01J31/1805B01J2531/842B01J2531/845B01J2531/0269B01J35/33
Inventor 王俊中张彤张会念
Owner ANHUI UNIVERSITY
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