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Method for preparing blue emission carbon quantum dots and application thereof

A carbon quantum dot and blue light technology, which is applied to the preparation and application of blue light carbon quantum dots, can solve the problems of complex method for synthesizing carbon quantum dots, severe preparation conditions, long reaction time, etc. Simple, stable luminous performance

Active Publication Date: 2017-05-24
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing blue light-emitting carbon quantum dots and its application to solve the problems of complex methods for synthesizing carbon quantum dots, harsh preparation conditions, and long reaction times.

Method used

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  • Method for preparing blue emission carbon quantum dots and application thereof
  • Method for preparing blue emission carbon quantum dots and application thereof
  • Method for preparing blue emission carbon quantum dots and application thereof

Examples

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Embodiment 1

[0037] Step 1: Dissolve glycine (0.3g) completely in deionized water (2ml), add ethanol (3ml) and magnetically stir evenly, then add ethylene glycol (10ml) and magnetically stir for 15 minutes;

[0038] Step 2: Put the pretreated solution into the reactor and put it in a microwave oven; then raise the temperature of the solution to 180±2°C, the microwave power is 640W, and the holding time is 2min; the carbon quantum dot solution is obtained after the reaction is completed;

[0039] Step 3: Centrifuge the carbon quantum dot solution at high speed to obtain carbon quantum dots, then wash with ethanol and water in turn and centrifuge again at high speed to finally obtain carbon quantum dot powder, and the centrifugation speed is 12000 rpm.

[0040] The prepared carbon quantum dots were tested as follows: transmission electron microscopy (transmission electron microscope (JEOL, 2100)), infrared spectroscopy (Fourier transform infrared spectroscopy (Bruker, WQF-410), the test range...

Embodiment 2

[0041] Embodiment 2: change the soaking time of step 2 in embodiment 1 into 5min;

Embodiment 3

[0042] Embodiment 3: change the soaking time of step 2 in embodiment 1 into 10min;

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Abstract

The invention provides a method for preparing blue emission carbon quantum dots. According to the method, carbon quantum dots are synthesized by a microwave method, and dehydration-condensation reaction generated under the microwave effect between amino acid and ethylene glycol is utilized to form carbon quantum dots. The method is a one-step preparation method, is quick, efficient and simple. Furthermore, the invention further develops application of the blue emission carbon quantum dots in oneness detection of antibiotics, and provides a novel method for quantitatively detecting metronidazole. The aim of quantitative detection can be achieved by utilizing optical sensing between metronidazole and carbon quantum dots, and the method is quicker, simpler, more convenient and more intuitive than other methods.

Description

technical field [0001] The invention belongs to the technical field of new functional materials, and more specifically relates to the preparation and application of blue light carbon quantum dots. Background technique [0002] As a new star in the family of carbon nanomaterials, carbon quantum dots exhibit many unique and outstanding properties compared with traditional semiconductor quantum dots and organic dyes, such as smaller size, better water solubility, and excellent photostability , stronger functionalization ability, highly tunable photoluminescent properties, anti-bleaching, chemical inertness, low toxicity, anti-photoflicker and good biocompatibility, etc. At present, the reported synthesis of carbon quantum dots can be roughly divided into two categories: top-down methods and bottom-up methods. Top-down methods include arc discharge, laser ablation, plasma treatment, and electrochemical oxidation. Bottom-up methods include methods such as sonication, microwave ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06G01N21/64
CPCC09K11/06C09K2211/10G01N21/6428G01N2021/6432
Inventor 张兴华于景景袁康郭强刘吉宏刘辉卢遵铭
Owner HEBEI UNIV OF TECH
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