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Preparation method of chlorine/phosphorus-codoped carbon quantum dots

A technology of carbon quantum dots and co-doping, applied in chemical instruments and methods, nanotechnology, nano-optics, etc., can solve the problems of lacking and restricting the development and application of chlorine and phosphorus-doped carbon quantum dots, and achieve easy control, Mild reaction and high yield

Inactive Publication Date: 2015-10-07
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chlorine and phosphorus elements are considered to be effective elements that can regulate the photogenerated charge behavior of carbon quantum dots. However, there is still a lack of effective methods for doping carbon quantum dots with chlorine and phosphorus, especially the technology of co-doping carbon quantum dots. Therefore, , which greatly limits the development and application of chlorine and phosphorus doped carbon quantum dots

Method used

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  • Preparation method of chlorine/phosphorus-codoped carbon quantum dots
  • Preparation method of chlorine/phosphorus-codoped carbon quantum dots
  • Preparation method of chlorine/phosphorus-codoped carbon quantum dots

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preparation example Construction

[0018] The preparation method of chlorine phosphorus co-doped carbon quantum dots adopts the following steps:

[0019] (1) Put liquid alcohols or carboxylic acids under normal temperature and pressure into a sealable ceramic or glass container; then add phosphorus pentachloride, and magnetically stir for 15-30min, liquid alcohols or carboxylic acids and pentachloride The weight ratio of phosphorus chloride is 1:0.02-0.25, and the magnetic stirring speed is 400-600r / min;

[0020] (2) Put the solution stirred in the previous step together with the ceramic or glass container into the microwave oven and heat it with microwaves. While heating, the solution is magnetically stirred. The magnetic stirring speed is 400-600r / min, and the power of the microwave oven is 400- 800W, after heating for 8-15 minutes, quickly take out the container containing the solution from the microwave oven, and put it into the ice-water mixed solution to cool for 5-10 minutes;

[0021] (3) Repeat the ope...

Embodiment 1

[0025] The preparation method of chlorine phosphorus co-doped carbon quantum dots in the present embodiment, it adopts the following steps:

[0026] (1) Take by weighing 5 grams of ethylene glycol that is liquid at normal temperature and pressure, and put it into a sealable ceramic or glass container; then add 0.5 grams of phosphorus pentachloride, and magnetically stir for 25min, and the magnetic stirring speed is 500r / min;

[0027] (2) Put the solution stirred in the previous step together with a ceramic or glass container into a microwave oven and heat it with a microwave. While heating, the solution is magnetically stirred at a magnetic stirring speed of 500r / min, and the power of the microwave oven is 600W. Heat for 10min After that, quickly take out the container holding the solution from the microwave oven, and put it into the ice-water mixed solution to cool for 8 minutes;

[0028] (3) Repeat the operation of heating and cooling in step (2) for 5 times until the solu...

Embodiment 2

[0031] The preparation method of chlorine phosphorus co-doped carbon quantum dots in the present embodiment, it adopts the following steps:

[0032] (1) Take by weighing 5 grams of ethylene glycol that is liquid under normal temperature and pressure, and put it into a sealable ceramic or glass container; then add 0.1 gram of phosphorus pentachloride, and magnetically stir for 15min, and the magnetic stirring speed is 400r / min;

[0033] (2) Put the solution stirred in the previous step together with the pottery or glass container into the microwave oven and heat it with microwaves. While heating, the solution is magnetically stirred. The magnetic stirring speed is 600r / min. Meanwhile, the power of the microwave oven is 400W. After heating for 15 minutes, quickly take out the container containing the solution from the microwave oven, and put it into the ice-water mixed solution to cool for 10 minutes;

[0034] (3) Repeat the operation of heating and cooling in step (2) for 3 t...

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Abstract

The invention discloses a preparation method of chlorine / phosphorus-codoped carbon quantum dots. The method comprises the following steps: mixing liquid alcohol or carboxylic acid with phosphorous pentachloride, repeatedly heating and cooling, and carrying out chromatography to obtain the purified chlorine / phosphorus-codoped carbon quantum dots. The preparation method has the advantages of mild reactions, high controllability, high carbon quantum dot yield and the like, and is suitable for mass production.

Description

technical field [0001] The invention belongs to the field of low-dimensional functional materials, in particular to a method for preparing chlorine-phosphorus co-doped carbon quantum dots based on heterogeneous elements to regulate the performance of carbon nanomaterials. Background technique [0002] Carbon quantum dots are a recently emerging zero-dimensional nanomaterial, which consists of carbon particles with a size below 10nm and luminescent properties. Because of its unique photoluminescence, broad light absorption, high anti-bleaching, low cytotoxicity and good biocompatibility, it is widely used in biochemical sensing, imaging analysis, environmental detection, energy utilization, light It has good application value in the fields of catalytic technology and drug carrier. [0003] In recent years, in order to obtain carbon quantum dots with better performance, researchers have carried out surface modification or doping treatment on carbon quantum dots. These doped ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65B82Y40/00B82Y20/00
Inventor 胡胜亮常青杨金龙
Owner ZHONGBEI UNIV
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