A controllable layered structure of nanodiamondene

A nano-diamondene and layered structure technology, applied in the direction of nanotechnology, diamond, etc., can solve the problems of low product quality, increase the distance between graphite layers, and high graphene production, and achieve good dispersion, high particle size concentration, and shape-controllable effect

Active Publication Date: 2017-09-15
ZHENGZHOU SINO CRYSTAL DIAMOND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The industrial preparation process of graphene is mainly oxidation-reduction method, which uses oxidant to oxidize graphite to increase the layer spacing of graphite, then separates it by physical method, and finally reduces it by chemical method to obtain graphene. Graphene yield is high, but product quality is low

Method used

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  • A controllable layered structure of nanodiamondene
  • A controllable layered structure of nanodiamondene
  • A controllable layered structure of nanodiamondene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A new controllable layered structure of nanodiamondene, which is a layered single crystal structure, and the carbon atoms in the same layer are sp 3 Orbital hybrid carbon bond connection, carbon atoms between layers are sp 2 Hybrid carbon bond connection; particle size is R, 20≤R≤500nm, C content is 99-100%, lattice spacing is 0.21nm.

Embodiment 2

[0029] The above-mentioned nanodiamondene is prepared by the following process, the steps are:

[0030] (1) Preliminary crushing: the diamond raw material is sent into the ball mill shaping barrel, and after steel balls of different particle sizes are rotated back and forth at high speed for crushing and shaping, they pass through a screen with a certain mesh size at the receiving port of the ball mill. For collection, the mesh number of the screen is not less than 70 mesh, and the ball mill shaping time is generally controlled within 1-5h, and the 70 mesh coarse material is automatically returned to the ball mill for ball mill shaping; the collected particles above 70 mesh are passed through a multi-layer vibrating screen machine Carry out the primary particle size classification, the mesh number of the sieve is arranged from high to low from 100 mesh to 800 mesh, and the time of vibrating the sieve is generally 30min-2h, and finally collect the fine material filtered by the 8...

Embodiment 3

[0036] The difference between the preparation process of Example 3 and Example 2 lies in that: the centrifugation time is 2 hours, the rotation speed is 8000 rpm, and the precipitation and separation time is 1 day. The particle size of the prepared nanodiamantene is 100-200nm.

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Abstract

A new type of controllable layered nanodiamondene belongs to the field of nanocarbon materials. It is a layered single crystal structure. The carbon atoms in the same layer are connected by sp3 orbital hybrid carbon bonds. The carbon atoms between them are connected by sp2 hybrid carbon bonds; the particle size is 20-500nm, and the C content is 99-100%. The morphology of the nano-diamantene is a multi-layer sheet structure, the shape is controllable, the dispersion is good, and there is no agglomeration phenomenon, and there is a proportional relationship between the particle size and the thickness of the sheet, and at the same time, the carbon atoms in the same sheet are sp3 orbitals Hybrid carbon bond connection, the carbon atoms between the layers are connected by sp2 hybrid carbon bonds, and the sp2 hybrid orbital carbon bonds are unsaturated, so that there are many electronic vacancies between the layers, and the electronic vacancies are convenient for electrons. Free to come and go.

Description

technical field [0001] The invention belongs to the field of nano-carbon materials, and in particular relates to a novel controllable layered structure of nano-diamondene. Background technique [0002] Carbon nanomaterials refer to carbon materials whose sample particle size is in the nanoscale range. It has the special properties of nanomaterials, which makes it have the development potential of special performance applications. Nanodiamond not only has the inherent properties of diamond, but also has the specific properties of nanomaterials, such as large specific surface area and small size effect. The synthesis of nano-diamonds currently available on the market is prepared by explosive synthesis. This synthesis technology mainly uses negative oxygen balance explosives, under the action of a protective medium, through the high temperature and high pressure (2000K-3000K, 20GPa) generated at the moment of explosion. -30 GPa) to convert free carbon into diamond. The charact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/25C01B32/26B82Y40/00
Inventor 郭留希赵清国张洪涛武艳强刘永奇王俊芝薛胜辉何本锋刘君丽杨晋中张建华
Owner ZHENGZHOU SINO CRYSTAL DIAMOND
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