Method for rapidly preparing fluorescent carbon quantum dot by using direct-current pulse process

A technology of carbon quantum dots and DC pulse power supply, applied in chemical instruments and methods, nano optics, luminescent materials, etc., can solve the problems of cumbersome post-treatment process, long time, need for dialysis, etc., and achieve chemical stability and biocompatibility Good performance, short production cycle and simple process

Active Publication Date: 2016-06-29
CHANGZHOU UNIV
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Problems solved by technology

[0004] In order to solve the technical problems that dialysis is required in the post-treatment process of the electrochemical method, the time is long, and the post-treatment process is cumbersome, the present invention adopts a DC pulse power supply, and uses graphite carbon rods as carbon sources to prepare fluorescent carbon quantum dots in deionized water. The preparation process is simple, convenient and fast

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  • Method for rapidly preparing fluorescent carbon quantum dot by using direct-current pulse process
  • Method for rapidly preparing fluorescent carbon quantum dot by using direct-current pulse process

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Embodiment 1-8

[0014] Take 350ml of deionized water and place it in a 500ml beaker. Take graphite electrodes with a diameter of 0.5cm as the positive and negative electrodes, and the distance between the positive and negative electrodes is 5cm. Use a DC pulse power supply for electrolysis for 24 hours. The conditions imposed by the DC pulse power supply As shown in Table 1, carbon quantum dots with fluorescence can be obtained after filtering the electrolyte.

[0015] Table 1 Example of preparing carbon quantum dots

[0016] Example

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Abstract

The invention relates to a method for preparing a fluorescent carbon quantum dot, belonging to the field of carbon quantum dot preparation. The method comprises the steps of placing deionized water into an electrolytic tank, electrolyzing for a certain time by taking graphite carbon rods as an anode and a cathode and using a direct-current pulse power supply to obtain a gray black water solution; and filtering to obtain a water-soluble fluorescent carbon quantum dot solution. By using the method, the preparation process of the carbon quantum dot is simple, and the reaction time is greatly shortened.

Description

Technical field [0001] The invention belongs to the technical field of preparation of fluorescent carbon quantum dots, and particularly relates to a method for preparing fluorescent carbon quantum dots by an electrochemical method. Background technique [0002] Fluorescent carbon quantum dots generally refer to a kind of nano-carbon with a size less than 10nm, a quasi-spherical structure, and stable light emission. Due to its rich and cheap raw material resources, and excellent water solubility, chemical inertness, low toxicity, easy functionalization and resistance to photobleaching, carbon quantum dots are used in fluorescence sensing, biological imaging, organic photovoltaics, organic light-emitting diodes, light Good application in catalysis and other fields. The methods developed to synthesize carbon quantum dots include chemical methods to convert small molecular precursors into nano-sized carbon quantum dots. Such methods mainly include arc discharge, laser etching, hydro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/00C09K11/65B82Y20/00B82Y40/00
CPCB82Y20/00B82Y40/00C09K11/65C25B1/00
Inventor 陈智栋许志刚刘长海王文昌
Owner CHANGZHOU UNIV
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