Preparation method of fluorescent carbon quantum dots employing algae as carbon sources and application

A technology of carbon quantum dots and algae, which is applied in the field of preparing carbon quantum dot cell labeling probes with fluorescent properties, to achieve high added value, high product yield and strong operability

Active Publication Date: 2017-05-10
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to address the deficiencies in the existing carbon quantum dot synthesis technology, to provide a method for preparing and producing fluorescent car...

Method used

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  • Preparation method of fluorescent carbon quantum dots employing algae as carbon sources and application
  • Preparation method of fluorescent carbon quantum dots employing algae as carbon sources and application
  • Preparation method of fluorescent carbon quantum dots employing algae as carbon sources and application

Examples

Experimental program
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Embodiment 1

[0032] (1) wash enteromorpha with tap water, remove impurities such as surface silt, then rinse with pure water;

[0033] (2) Weigh 200 grams of Enteromorpha raw material (about 10 grams in dry weight) after step (1), mix Enteromorpha and pure water according to the mass ratio of Enteromorpha and pure water, and put Tissue the raw material container of the mashing machine and pulverize for 5 minutes to obtain the enteromorpha slurry;

[0034] (3) Take by weighing 10 grams of Enteromorpha slurry that step (2) obtains, put into 30mL polytetrafluorohydrothermal reaction kettle and add a cover and put into the outsourcing sleeve to carry out airtight;

[0035] (4) Put the reaction kettle with Enteromorpha slurry into the microwave reactor, set the temperature to 200°C, and the pressure to 20atm, react for 60 minutes, then stop heating;

[0036] (5) When the temperature of the reactor is lowered to below 40°C, the lid of the reactor is opened, and the reaction product is a reddish...

Embodiment 2

[0041] (1) wash enteromorpha with tap water, remove impurities such as surface silt, then rinse with pure water;

[0042] (2) Weigh 200 grams of Enteromorpha raw material (about 10 grams in dry weight) after step (1), mix Enteromorpha and pure water according to the mass ratio of Enteromorpha and pure water, and put Pound the cup and pulverize for 5 minutes with a tissue masher to obtain Enteromorpha slurry;

[0043] (3) Take by weighing 30 grams of Enteromorpha slurry that step (2) obtains, put into 100mL polytetrafluorohydrothermal reaction kettle and add a cover and put into the outsourcing metal casing and carry out airtight;

[0044] (4) Put the reactor containing Enteromorpha slurry into an oven, set the temperature to 180°C, and react for 90 minutes. During the reaction, the temperature fluctuation is controlled at ±5°C, and then stop heating;

[0045] (5) When the temperature of the reactor is lowered to below 40°C, the lid of the reactor is opened, and the reaction p...

Embodiment 3

[0049] (1) wash enteromorpha with tap water, remove impurities such as surface silt, then rinse with pure water;

[0050] (2) Weigh 200 grams of Enteromorpha raw material (about 10 grams in dry weight) after step (1), mix Enteromorpha and pure water according to the mass ratio of Enteromorpha and pure water, and put Pound the cup and pulverize for 5 minutes with a tissue masher to obtain Enteromorpha slurry;

[0051] (3) Take by weighing 30 grams of Enteromorpha slurry that step (2) obtains, put into 100mL polytetrafluorohydrothermal reaction kettle and add a cover and put into the outsourcing metal casing and carry out airtight;

[0052] (4) Put the reaction kettle with Enteromorpha slurry into the muffle furnace, set the temperature to 200°C, and react for 60 minutes. During the reaction, the temperature fluctuation is controlled at ±5°C, and then stop heating;

[0053] (5) When the temperature of the reactor is lowered to below 40°C, the lid of the reactor is opened, and t...

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Abstract

The invention discloses a method for preparing fluorescent carbon quantum dots employing algae as raw materials. The method comprises the following steps of (1) cleaning the alga raw materials to remove impurities, and crushing the algae and water to obtain alga slurry; (2) putting a proper amount of alga slurry into a sealing system for high-temperature hydrothermal reaction, and carbonizing the alga slurry; (3) carrying out post-treatment on the carbonized product in the step (2) to remove insoluble substances and large-size components, thereby obtaining a fluorescent carbon quantum dot solution; and (4) carrying out freeze drying on the fluorescent carbon quantum dot solution in the step (3) to obtain fluorescent carbon quantum dot powder. Cheap algae, especially enteromorpha prolifera, are effectively converted into the carbon quantum dots with fluorescence characteristics, and high additional values and harmless conversion of the enteromorpha prolifera are achieved; and meanwhile, the preparation method is simple in process, high in operability and low in cost, massive preparation of the carbon quantum dots can be achieved, and other chemicals are not needed, so that the method is environment-friendly; and the yield of a product is high in the preparation process.

Description

technical field [0001] The invention belongs to the technical field of functional nanometer materials, and in particular relates to a method for preparing carbon quantum dots with fluorescence characteristics, in particular to a method for preparing carbon quantum dot cell labeling probes with fluorescence characteristics by using seaweed as a carbon source. Background technique [0002] Functional nanomaterials are a technical field that has developed very rapidly in recent years. Scientists have successfully prepared organic polymer beads, liposomes, semiconductor quantum dots, silicon quantum dots, upconversion nanoprobes, and noble metal nanoparticles. , magnetic nanospheres, etc., and use their various excellent properties to develop a variety of technical means, which are widely used in medical testing, disease diagnosis, energy batteries, environmental assessment, pollution control and other fields. for the application. [0003] Carbon quantum dots are a new research...

Claims

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Application Information

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IPC IPC(8): C01B32/15C09K11/65G01N21/64B82Y20/00B82Y40/00
CPCG01N21/6428G01N21/6486C09K11/65B82Y20/00B82Y40/00C01P2002/84C01P2004/04C01P2006/60C01P2004/64
Inventor 王晓娟陈奇张政媛黄方王生杰潘思远葛保胜何化
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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