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Preparation method of stable fluorescent carbon

A fluorescent and stable technology, applied in the field of material chemistry, to achieve high yield, simple method and environmental friendly effect

Inactive Publication Date: 2012-10-03
HENAN NORMAL UNIV
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Problems solved by technology

At present, the preparation methods of related fluorescent carbon nanoparticles include electrochemical preparation method, laser-assisted preparation method, direct organic preparation method, microwave-assisted preparation method, template preparation method, etc., but most of them require complex equipment or the use of toxic and harmful organic substances, which will inevitably make production The relatively high cost and the unfriendly environment of the preparation method are not conducive to industrial production, so that the preparation of fluorescent carbon nanoparticles is still in its infancy.

Method used

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  • Preparation method of stable fluorescent carbon
  • Preparation method of stable fluorescent carbon
  • Preparation method of stable fluorescent carbon

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preparation example Construction

[0025] The preparation method of stable fluorescent carbon of the present invention is:

[0026] 1) Prepare glutinous rice liqueur and set aside;

[0027] 2) Mix glutinous rice wine with double distilled water;

[0028] 3) Put the above mixed system into the reactor and react in the hydrothermal reactor;

[0029] 4) Collect the supernatant after the reaction, which is a stable aqueous solution of fluorescent carbon nanoparticles.

[0030] The mass ratio of the glutinous rice liqueur to twice distilled water is 11-20%.

[0031] The above-mentioned hydrothermal reaction temperature is 140-180°C.

[0032] The above reaction time is 16 to 24 hours.

Embodiment 1

[0034] (1) Preparation of glutinous rice liqueur: Soak 500 grams of glutinous rice in clean water for 1 hour, change the water and wash it, remove it; put clean water in the pot, put the glutinous rice in, put it on the fire, and cook it with high heat. Cook until the glutinous rice is five mature, take it out, wash it with cold water twice, drain the water, steam it in a cage, pour it into a pot, and set aside; roll 250 grams of distiller's koji into noodles, put them in the glutinous rice and stir well, Slap the top flat, and use a small rolling pin to punch a hole with a diameter of 2 cm in the middle to make the air circulate; cover it with a cloth in summer and a quilt in winter, keep the temperature at about 30 degrees, and let it ferment. ;Standby; Mix 3g glutinous rice liqueur with 27 mL double distilled water, stir for 5 minutes;

[0035] (2) Transfer the above mixed system to the reactor, and react at 140°C for 20 hours;

[0036] (3) The supernatant is collected to ...

Embodiment 2

[0039] (1) Preparation of glutinous rice liqueur: prepare by the method of Example 1, and set aside; mix 5 g of glutinous rice liqueur with 25 mL of double-distilled water, and stir for 5 minutes;

[0040] (2) Transfer the above mixed system to the reactor, and react at 160°C for 24 hours;

[0041] (3) The supernatant is collected to obtain an aqueous solution of fluorescent carbon nanoparticles.

[0042] The transmission electron micrograph of the obtained fluorescent carbon nanoparticles is shown in figure 1 Photos of fluorescent carbon nanoparticles under , UV and fluorescent light irradiation are shown in figure 2 , and the aqueous solution of fluorescent carbon nanoparticles on Fe 3+ For the experimental results of sensing, see image 3 .

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Abstract

The invention relates to a simple green preparation method of stable fluorescent carbon. The method comprises the following steps: mixing sweet rice wine and secondary distilled water and carrying out hydrothermal reaction at 140-180 DEG C to prepare aqueous solution of stable nano fluorescent carbon particle. The preparation method does not need special equipment and special reaction conditions, is simple in process, high in yield and environment-friendly, and is suitable to mass industrial production. The prepared nano fluorescent carbon particle has good water-solubility, high stability and can be directly applied to detection of metal Fe<3+> ions.

Description

technical field [0001] The invention belongs to the technical field of material chemistry, and in particular relates to a simple and green preparation method of stable fluorescent carbon. Background technique [0002] The synthesis and optical properties of fluorescent carbon nanoparticles have received great attention. It has become an important member of carbon materials and has been applied in the fields of biology and catalysis. At present, the preparation methods of related fluorescent carbon nanoparticles include electrochemical preparation method, laser-assisted preparation method, direct organic preparation method, microwave-assisted preparation method, template preparation method, etc., but most of them require complex equipment or the use of toxic and harmful organic substances, which will inevitably make production The relatively high cost and the environmentally unfriendly preparation method are not conducive to industrial production, so that the preparation of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65C01B31/02G01N21/64C01B32/15
Inventor 高书燕陈艳丽蒋凯
Owner HENAN NORMAL UNIV
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