Supersonic chemical preparation method for grapheme quantum dots

A technology of graphene quantum dots and ultrasonic waves, which is applied in the field of graphene quantum dots, can solve the problems of difficult modulation of optical and electrical properties, graphene confinement, graphene energy bands are not easy to open, etc., to achieve a significant quantum confinement effect and uniform distribution The effect of narrow size and easy mass production
CN102225758BInactive Publication Date: 2012-10-24KUNMING INST OF PHYSICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
KUNMING INST OF PHYSICS
Publication Date
2012-10-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

A supersonic chemical preparation method for grapheme quantum dots relates to a preparation method for grapheme quantum dots, and especially relates to a method for preparing a grapheme quantum dot solution with the characteristics of good monodispersity and luminescence performance using a simple and environmentally friendly process with cheap carbon black or graphite powder as the raw material.The preparation method provided in the invention is characterized by adding a dispersant into carbon black or graphite and obtaining grapheme quantum dots under the action of supersonic wave. The grapheme quantum dot solution prepared in the invention has the characteristics of luminescence, monodispersion, water-solubility, etc.
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Description

technical field

[0001] The invention relates to a method for preparing graphene quantum dots, in particular to a method for preparing graphene quantum dots with good monodispersity and luminescent properties by using cheap carbon black or graphite powder as raw materials and using a simple and environmentally friendly process. Background technique

[0002] Graphene is a carbon atom with sp 2 A two-dimensional flat film with a hexagonal honeycomb lattice structure with a bond length of 0.142nm in a hybrid form. It has special electrical, optical, thermal and mechanical properties, and has important potential value in the application of transistors, single-molecule gas detection, integrated circuits, transparent conductive electrodes, biological devices, supercapacitors and electromechanical couplers. At present, it can be prepared by tape stripping method, chemical vapor deposition method, SiC heating method, graphene oxide reduction method and other methods. These preparati...

Claims

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