Novel sp3 carbon material and high-pressure preparation method thereof

Abstract

The invention relates to a novel sp3 carbon material and a high-pressure preparation method thereof, and belongs to the technical field of the preparation of superhard carbon materials. C60 @ SWNTs or C70 @ SWNTs is used as a raw material, a diamond anvil cell is used as a pressurizing device, a sample is filled into a sample chamber for pressurizing to greater than or equal to 60GPa in a transmission-medium-free hard pressurizing manner, and then depressurized to normal pressure to obtain the novel sp3 carbon material with super hard characteristics. The raw material used in the novel sp3 carbon material is common, reactant cost is low, the preparation process is safe and simple, the method does not need to add temperature variables, the prepared ultra hard carbon material has clearly differentiable X ray diffraction peaks, good crystallization and excellent mechanical properties, and can be stable under the normal pressure.

Description

technical field

[0001] The invention belongs to sp 3 The technical field of carbon material preparation, specifically related to the use of C 60 doped carbon nanotubes or C 70 A new method for preparing superhard carbon materials with a new structure by using doped carbon nanotubes as raw materials through a high-pressure method. Background technique

[0002] Carbon is a very common element. Due to its flexible bonding pattern, it can exist in a wide variety of forms. With the subsequent discovery of fullerenes, carbon nanotubes, and graphene, their excellent physical and chemical properties have been widely used in various fields. The properties of a material depend on its structure, so designing and synthesizing carbon materials with novel structures has aroused intense scientific interest, especially the synthesis of carbon materials with superhard properties.

[0003] At present, people use different carbon nanomaterials as precursors, and use high pressure to explo...

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