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Hydrothermal synthesis method of carbon quantum dots from cotton

A technology of carbon quantum dots and raw material water, applied in the field of hydrothermal synthesis of carbon quantum dots, can solve the problems of many preparation steps and unsuitable for large-scale production, and achieve the effect of simple preparation process and wide sources

Active Publication Date: 2014-12-10
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This invention uses eggs as the raw material for preparing carbon quantum dots, which is a convenient source, but the raw materials need to be refrigerated before use, and there are many preparation steps, so it is not suitable for large-scale production

Method used

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  • Hydrothermal synthesis method of carbon quantum dots from cotton
  • Hydrothermal synthesis method of carbon quantum dots from cotton
  • Hydrothermal synthesis method of carbon quantum dots from cotton

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step 1, take 0.3g cotton and 400mg p-toluenesulfonic acid, add in 25ml water;

[0024] Step 2, hydrothermal reaction at 200°C for 5 hours;

[0025] Step 3: filter with a 200 μm cellulose filter membrane, and then dialyze with a 1000 Da dialysis bag to obtain pure carbon quantum dots.

Embodiment 2

[0027] Step 1, take 0.3g cotton and 150mg p-toluenesulfonic acid, add in 25ml water;

[0028] Step 2, hydrothermal reaction at 200°C for 5 hours;

[0029] Step 3: filter with a 200 μm cellulose filter membrane, and then dialyze with a 1000 Da dialysis bag to obtain pure carbon quantum dots.

Embodiment 3

[0031] Step 1, take 0.3g cotton and 60mg p-toluenesulfonic acid, add in 25ml water;

[0032] Step 2, hydrothermal reaction at 200°C for 5 hours;

[0033] Step 3: filter with a 200 μm cellulose filter membrane, and then dialyze with a 1000 Da dialysis bag to obtain pure carbon quantum dots.

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Abstract

The invention discloses a hydrothermal synthesis method of carbon quantum dots from cotton. The method comprises the following steps: weighing certain amounts of cotton and acidic catalyst, adding into a right amount of water, carrying out hydrothermal reaction for some time, filtering the reaction product, and dialyzing to obtain the carbon quantum dots. The method has the advantages of wide carbon sources and simple preparation process, can implement mass production, and is a green method for synthesizing carbon quantum dots.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a method for hydrothermally synthesizing carbon quantum dots based on cotton as a raw material. Background technique [0002] As a novel carbon family nanomaterial, carbon quantum dots have excellent water solubility, biocompatibility, photobleaching resistance, and tunable fluorescence properties, and are widely used in bioimaging, photocatalysis, solar cells and other fields. [0003] The hydrothermal synthesis method is widely used in the synthesis of carbon quantum dots due to its high reaction yield and uniform particle size. For the synthesis process of carbon quantum dots, most methods in the current research require strict experimental conditions or special energy sources, resulting in high costs and low yields of carbon quantum dots obtained. [0004] After searching, the Chinese invention patent with the publication number CN103832993A discloses a meth...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82Y30/00
Inventor 杨志徐明瀚王羽希王英张亚非
Owner SHANGHAI JIAO TONG UNIV
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