Method for preparing graphene quantum dots

A technology of graphene quantum dots and gas phase, applied in graphene, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of long time-consuming, inability to obtain graphene quantum dot powder in one step, many processes, etc., and achieve the effect of cheap raw materials

Active Publication Date: 2018-04-20
DALIAN UNIV OF TECH
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fast and convenient method for preparing graphene quantum dots in view of the pr...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing graphene quantum dots
  • Method for preparing graphene quantum dots

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Using benzoic acid as a carbon source, the method for rapidly preparing graphene quantum dots by a gas phase detonation method comprises the following steps:

[0028] Step 1, taking benzoic acid as a carbon source, weighing 4g of benzoic acid, and spreading it in the gas phase detonation tube;

[0029] Step 2, vacuumize the gas-phase detonation tube after airtight, and simultaneously heat the gas-phase detonation tube to 110°C to sublimate benzoic acid (benzoic acid sublimes quickly at 100°C), estimate the benzene according to the barometer that comes with the gas-phase detonation tube Amount of formic acid sublimation;

[0030] Step 3: Charge hydrogen and oxygen into the gas phase detonation tube respectively, the volume ratio is 1:1, the molar weight charged is 0.13mol, and the pressure value in the gas phase detonation tube is 0.75atm;

[0031] Step 4. Wait for 5 minutes to mix the gas in the gas-phase detonation tube evenly, and detonate the gas in the tube through...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the technical field of fluorescent nanomaterial synthesis, and discloses a method for preparing graphene quantum dots. The method comprises the concrete steps that benzoic acid is used as a carbon source and is flatly spread in a gas-phase detonation tube; vacuumizing is performed after the gas-phase detonation tube is sealed; meanwhile, the gas-phase detonation tube is heated to be higher than 100 DEG C, so that the benzoic acid is sublimated; hydrogen gas and oxygen gas are respectively introduced into the gas-phase detonation tube; gas in the gas-phase detonation tube is detonated; the heating on the gas-phase detonation tube is stopped, so that the gas-phase detonation tube is cooled to be lower than 60 DEG C; the gas-phase detonation tube is opened for collecting black products; the black products are graphene quantum dot powder. The method is simple and efficient; the graphene quantum dots can be fast synthetized in large scales.

Description

technical field [0001] The invention belongs to the technical field of fluorescent nanomaterial synthesis, and relates to a method for preparing graphene quantum dots. Background technique [0002] Graphene quantum dots are quasi-zero-dimensional nanomaterials, and the movement of electrons in them is restricted in all directions, so the quantum confinement effect is particularly significant and has many unique properties. Due to their superior properties, such as photobleaching resistance, low toxicity, good biocompatibility, easy modification, chemical inertness, broader excitation spectrum, and tunable bandgap, etc., they have attracted considerable attention. Graphene quantum dots have been used in fluorescent probes, bioimaging, biomedical and optoelectronic devices. [0003] At present, the preparation methods of graphene quantum dots are mainly divided into two methods: top-down and bottom-up. Document 1 (CN104229790A) discloses a method for preparing graphene quant...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01B32/184B82Y40/00C09K11/65
CPCB82Y40/00C01B2204/32C01P2004/64C09K11/65
Inventor 闫鸿浩何闯李晓杰赵铁军
Owner DALIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap