Chemical method for preparing single-layer porous graphene
A technology of porous graphene and graphene, applied in the field of carbon materials, can solve the problems such as the inability to precisely control the number of low molecular weight polymer units, and the research on quantitative polymerization without crown ether rings.
Active Publication Date: 2021-06-11
青岛量子元基环保科技有限公司
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Problems solved by technology
If an unsaturated bond is introduced into the 18-crown-6 ring to form a low-molecular-weight polymer, the number of units of the low-molecular-weight polymer cannot be accurately controlled to be 8. For example, there is no Quantitative Polymerization Study of Crown Ether Ring
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[0024] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.
[0025] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by on...
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The invention discloses a novel chemical method for preparing single-layer porous graphene. The technology solves the problems of controllable batch punching of graphene and uniform distribution of holes. A reaction reagent used in the graphene punching is KMnO4, crown ether is quantitatively grafted with a polyhedral oligomeric silsesquioxane derivative to form a crown ether ring assembly, the crown ether ring assembly is used as a growth environment template agent of the reaction reagent, and quantitative complexation is performed in a liquid phase environment to determine microcosmic number of the reaction reagent. The method comprises the following steps: subjecting a complex solution of a crown ether quantitatively-grafted polyhedral oligomeric silsesquioxane derivative and the reaction reagent to uniform spin-coating on graphene to form a monolayer, heating the monolayer in a tubular furnace to remove organic matters, and performing heating and reacting in an inert atmosphere to remove rings formed by carbon atoms with a determined microscopic number on the graphene, thereby realizing accurate punching of the graphene and uniform distribution of holes. The single-layer porous graphene is transferred and stripped from a substrate by adopting ultrasonic waves and an adhesive tape. The porous graphene prepared by the method is widely applied to the fields of saline water separation, electrode materials and the like.
Description
technical field [0001] The invention belongs to the field of carbon materials, in particular to a single-layer porous graphene and a chemical preparation method thereof. Background technique [0002] Graphene is a two-dimensional carbon material composed of six-membered rings. Graphene has good electrical conductivity, mechanical strength, optical properties, adsorption properties, thermal conductivity and high transparency. At present, graphene is the thinnest and strongest material among known materials, so graphene is used in energy, mechanical , electronics and other industries. [0003] Since 2004, when Professor Andre Geim and Kostya Novoselov of the University of Manchester in the United Kingdom obtained Graphene (Graphene) by tape stripping for the first time, the research on Graphene has been valued and studied by many scientific researchers. Graphene preparation methods include: micromechanical exfoliation method, ultra-high vacuum graphene epitaxial growth metho...
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IPC IPC(8): C01B32/194
CPCC01B32/194C01B2204/02
Inventor 刘元会张云波谢蕾徐振民高于斐
Owner 青岛量子元基环保科技有限公司