A kind of graphene microsheet with network structure and preparation method thereof

Abstract

Disclosed are a graphene micro-sheet having a mesh structure and a preparation method therefor. According to the present invention, by adding a grafted functional group to a graphene micro-sheet, and generating micropores in the graphene micro-sheet during grafting, a graphene micro-sheet having a regular three-dimensional mesh structure, good stability, high adsorption rate, and great composite performance is obtained. The graphene micro-sheet having a mesh structure has super strong adsorbability, is applied to heavy metal adsorption, wastewater treatment, oil pollution collection, seawater desalination, and drink water purification, and can be used in a wide temperature range, a wide pH range, and a wide range of ion components.

Description

technical field

[0001] The invention relates to the technical field of graphene, in particular to the technical field of graphene derivatives. Background technique

[0002] Graphene is a planar atomic crystal structure in which carbon atoms are closely arranged in a honeycomb shape in regular hexagons. The unique planar structure of graphene makes it possess many characteristics that three-dimensional crystals do not have, such as a specific surface area as high as 2.6×10³m² / g , the thermal conductivity is as high as 3×10³W / (m.K), the mechanical properties are 1.06×10³Gpa, the Young’s modulus is 1.0TPa, and its mechanical strength is as high as 130Gpa, which is more than 100 times that of steel. Graphene has a stable regular hexagonal lattice structure so that it has excellent electrical conductivity, and the electron mobility is as high as 1.5×10 4 cm 2 / (V.s), which is 2 times higher than the maximum mobility of semiconductor indium antimonide and 10 times higher than th...