Method for preparing fluorine-doped graphene quantum dots

A graphene quantum dot and fluorine doping technology, which is applied in graphene, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of long reaction time and uncontrollable doping concentration, and achieve short doping time and easy operation The effect of control

Active Publication Date: 2018-10-26
GUANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this method simplifies the preparation process, the reaction time is long, and the doping concentration cannot be controlled.

Method used

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  • Method for preparing fluorine-doped graphene quantum dots
  • Method for preparing fluorine-doped graphene quantum dots
  • Method for preparing fluorine-doped graphene quantum dots

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for preparing fluorine-doped graphene quantum dots, comprising the following steps:

[0034] S1. Install the devices for preparing fluorine-doped graphene quantum dots in order, weigh 200mg xenon difluoride and add it to the quartz round bottom flask 3, weigh 100mg graphene quantum dot samples and put them into the quartz boat 6, disassemble Lower the head of the quartz tube 7, and slowly put the quartz boat 6 into the quartz tube 7.

[0035] Open the valve of the argon tank 1 and feed in argon gas to remove the air from the entire experimental device system; during this process, the oil bath 2 is heated to 60°C. The xenon difluoride decomposes under heating conditions to generate fluorine and xenon, and the fluorine and xenon are driven by argon to reach the quartz tube 7 where the sample is located.

[0036] S2. Turn on the switch of the ultraviolet lamp 5, and the ultraviolet lamp 5 irradiates the graphene quantum dots in the quartz tube 7 for 10 minutes, w...

Embodiment 2

[0039] A method for preparing fluorine-doped graphene quantum dots, comprising the following steps:

[0040] S1. Install the devices for preparing fluorine-doped graphene quantum dots in order, weigh 500mg of xenon difluoride and add it to the quartz round bottom flask 3, weigh 100mg of graphene quantum dot samples and put them into the quartz boat 6, disassemble Lower the head of the quartz tube 7, and slowly put the quartz boat 6 into the quartz tube 7.

[0041] Open the valve of the argon tank 1 and feed in argon gas to remove the air from the entire experimental device system; during this process, the oil bath 2 is heated to 60°C. The xenon difluoride decomposes under heating conditions to generate fluorine and xenon, and the fluorine and xenon are driven by argon to reach the quartz tube 7 where the sample is located.

[0042]S2. Turn on the switch of the ultraviolet lamp 5, and the ultraviolet lamp 5 irradiates the graphene quantum dots in the quartz tube 7 for 10 minut...

Embodiment 3

[0047] A method for preparing fluorine-doped graphene quantum dots, comprising the following steps:

[0048] S1. The device for preparing fluorine-doped graphene quantum dots is installed in order. The device for preparing fluorine-doped graphene quantum dots is installed in order, and 1000mg of xenon difluoride is weighed and added to the quartz round bottom flask 3, Weigh 100 mg graphene quantum dot sample and put it into the quartz boat 6, remove the head of the quartz tube 7, and slowly put the quartz boat 6 into the quartz tube 7.

[0049] Open the valve of the argon tank 1 and feed in argon gas to remove the air from the entire experimental device system; during this process, the oil bath 2 is heated to 60°C. The xenon difluoride decomposes under heating conditions to generate fluorine and xenon, and the fluorine and xenon are driven by argon to reach the quartz tube 7 where the sample is located.

[0050] S2. Turn on the switch of the ultraviolet lamp 5, and the ultrav...

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Abstract

The invention provides a method for preparing fluorine-doped graphene quantum dots, relating to the field of production and preparation of graphene quantum dots. According to the method disclosed by the invention, by utilizing a photochemical principle, fluorine is directly doped into graphene quantum dot powder by utilizing a photochemical method, and the fluorine doping concentration can be controlled by controlling a mass ratio of xenon difluoride to the graphene quantum dots. The method is simple and easy to operate, doping can be completed within a few minutes to more than ten minutes, and the defect that other impurities are easily introduced in the traditional method for taking fluorine-containing organic compounds as a fluorine source can be overcome.

Description

technical field [0001] The invention relates to the field of production and preparation of graphene quantum dots, in particular to a method for preparing fluorine-doped graphene quantum dots. Background technique [0002] As a new type of low-dimensional graphite material, graphene quantum dots have excellent light resistance, good biocompatibility, good tunable photoluminescence properties, unique up-conversion characteristics, excellent catalytic activity and chemical properties. Properties such as inertia have made it attract much attention in recent years. It has aroused widespread attention and research boom in the fields of nanoscience and nanotechnology, and has been widely used in supercapacitors, solar cells, biological calibration and imaging, ultrasensitive sensors and detectors, fluorescent probes, etc. Due to their special optical properties, electronic properties, chemical stability and spin properties, graphene quantum dots (GQDs) have become a hotspot in man...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/194B82Y40/00
CPCB82Y40/00C01B32/194C01B2204/30
Inventor 刘富池高富桦孔文婕白小花许小芬
Owner GUANGXI NORMAL UNIV
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