CN104232084A - Method for ultrasonically synthesizing hyperfluorescent carbon spots, and applications of hyperfluorescent carbon spots - Google Patents
Method for ultrasonically synthesizing hyperfluorescent carbon spots, and applications of hyperfluorescent carbon spots Download PDFInfo
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- CN104232084A CN104232084A CN201410399540.1A CN201410399540A CN104232084A CN 104232084 A CN104232084 A CN 104232084A CN 201410399540 A CN201410399540 A CN 201410399540A CN 104232084 A CN104232084 A CN 104232084A
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Abstract
The invention discloses a method for ultrasonically synthesizing hyperfluorescent carbon spots, and applications of the hyperfluorescent carbon spots, belonging to the field of nano-luminescence materials. The method comprises the following steps: (1) preparing a mixed solution by taking 0.1-5mol/L glucose as a carbon source, performing ultrasonic treatment to the mixed solution for 0.5-5h under the environment of pH ranging from 1 to 14; and (2) adding 0.1-5mol/L alcohol or amino acid into the mixed solution obtained in the step (1) as a modifier, and aging for 1-48h under the catalytic action of an inorganic salt catalyst, to obtain a hyperfluorescent carbon spots water solution. The method is simple to operate, pollution-free and mass production is easy to conduct.
Description
Technical field
The invention belongs to field of nano-luminescent material, be specifically related to hyperfluorescenceZeng Yongminggaoyingguang carbon point and the application of hyperfluorescenceZeng Yongminggaoyingguang carbon point thereof of the synthesis of a kind of ultrasonic method.
Background technology
The spherical fluorescent carbon nano particle of the class that carbon point is a kind of dispersion, size is less than 10nm, it has excellent optical property, good biocompatibility, hypotoxicity and the advantage such as cheap and easy to get, is widely used in the fields such as biomarker, opto-electronic device, bio-sensing, biological detection, environment measuring and catalysis.
The method of current synthesis carbon point mainly contains two kinds, and one is synthetic method from top to bottom, namely utilizes the means such as arc-over, laser and electrochemistry directly to obtain from the carbon material of bulk or carbon nanotube; Two is synthetic methods from top to bottom, is obtained from organism by means such as microwave treatment, chemical oxidation, organic charings.The former often needs strict experiment condition or the special energy, and cost is high, and the fluorescence quantum yield obtaining carbon quantum dot is less; The latter can use hazardous chemicals concentrated acid usually, and synthesis condition is comparatively harsh, so be also unfavorable for continuing and scale production carbon quantum dot.
Chinese invention patent (CN 101973541 A) and (CN 103160279 A) individually disclose a kind of method preparing carbon point.The carbon point photoluminescent property that the former is extracted by five steps such as chemical oxidation, evaporation, neutralization, centrifugal, ultrafiltration from activated carbon is good and have electrogenerated chemiluminescence(ECL) activity, but the method preparation process is more complicated, synthesis condition is harsh, and the step having heating concentrated nitric acid solution etc. comparatively dangerous, be not suitable for widespread use.The latter is using abundance, plant ash cheap and easy to get as carbon source, adopt hydrothermal synthesis method one-step synthesis good water solubility, stable luminescence, have the carbon point of good biocompatibility, the method overcome the shortcoming of the former preparation process complexity, but still need to heat strong acid solution, comparatively dangerous.
Summary of the invention
The present invention is directed to above deficiency, provide a kind of preparation technology simple, preparation condition is gentle, reproducible, be easy to the carbon point preparation method promoted, and the carbon synthesized some good water solubility, photoluminescent property are good, be successfully applied to catalytic field, have broad application prospects.
The technical solution adopted in the present invention is:
A method for ultrasonic synthesis hyperfluorescenceZeng Yongminggaoyingguang carbon point, preparation process is as follows:
(1) prepare mixed solution using the glucose of 0.1 ~ 5mol/L as carbon source, be carry out supersound process to described mixed solution under the environment of 1 ~ 14 in pH scope, the treatment time is 0.5 ~ 5h;
(2) add 0.1 ~ 5mol/L alcohol in the mixed solution obtained in described step (1) or amino acid makes modifier, ageing 1 ~ 48h under the katalysis of inorganic salt catalyst, namely obtain the carbon point aqueous solution of hyperfluorescenceZeng Yongminggaoyingguang.
Preferably, described modifier is methyl alcohol, glycerine, ethanol or halfcystine.
Preferably, described inorganic salt catalyst is Silver Nitrate, cupric chloride or magnesium sulfate.
An application for hyperfluorescenceZeng Yongminggaoyingguang carbon point, described hyperfluorescenceZeng Yongminggaoyingguang carbon point can be used as catalase and carrys out catalysis glucose oxidase.
The present invention has the following advantages:
The present invention prepares the method for hyperfluorescenceZeng Yongminggaoyingguang carbon point, and technique is simple, and preparation condition is gentle, has good reproducible, is easy to promote; The carbon point good water solubility utilizing this preparation method to prepare, photoluminescent property are good, are successfully applied to catalytic field, have broad application prospects; Carbon point prepared by the present invention simultaneously successfully replaces peroxidase, the superoxol containing 3,3', 5,5'-tetramethyl benzidine is developed the color, can be used for being detected hydrogen oxide and glucose.
Accompanying drawing explanation
Fig. 1 is the fluorescence emission spectrogram preparing carbon point of the embodiment of the present invention 1;
Fig. 2 is the uv-visible absorption spectra figure preparing carbon point of the embodiment of the present invention 2;
Fig. 3 is the transmission electron microscope figure preparing carbon point of the embodiment of the present invention 2;
Fig. 4 be the embodiment of the present invention 3 prepare the uv absorption spectra that carbon point obtains for catalysis.
Embodiment
Below in conjunction with concrete example, technical solution of the present invention is described further:
Embodiment 1
(1) preparing mixed solution using the glucose of 1mol/L as carbon source, is carry out supersound process 2h to mixed solution under the environment of 1 at pH;
(2) in step (1) gained mixed solution, adding 1mol/L methyl alcohol, is ageing 6h under the katalysis of 0.05mol/L magnesium chloride in concentration, namely obtains the carbon point aqueous solution of hyperfluorescenceZeng Yongminggaoyingguang.Its fluorescence has the distinctive character of carbon point, and emmission spectrum changes with the change of excitation wavelength, with reference to Fig. 1.
The carbon point of preparation is used as peroxidase, successfully makes the superoxol containing 3,3', 5,5'-tetramethyl benzidine develop the color, have detected hydrogen peroxide and glucose.
Embodiment 2
(1) preparing mixed solution using the glucose of 3mol/L as carbon source, is carry out supersound process 5h to mixed solution under the environment of 11 at pH;
(2) in step (1) gained mixed solution, adding 1mol/L glycerine, is ageing 12h under the katalysis of 100mmol/L Silver Nitrate in concentration, namely obtains the carbon point aqueous solution of hyperfluorescenceZeng Yongminggaoyingguang.By being positioned at carbon point patterns absorption peak and the transmission electron microscope figure at 280nm place in uv-visible absorption spectra figure, with reference to Fig. 2 and Fig. 3, prove that the method has prepared carbon point.
The carbon point of preparation is used as peroxidase, successfully makes the superoxol containing 3,3', 5,5'-tetramethyl benzidine develop the color, have detected hydrogen peroxide and glucose.
Embodiment 3
(1) preparing mixed solution using the glucose of 5mol/L as carbon source, is carry out supersound process 3h to mixed solution under the environment of 7 at pH;
(2) adding 2mol/L ethanol to step (1) gained mixed solution, is ageing 24h under the katalysis of 0.5mol/L magnesium sulfate in concentration, namely obtains the carbon point aqueous solution of hyperfluorescenceZeng Yongminggaoyingguang.
The carbon point of preparation is used as peroxidase, successfully makes the superoxol containing 3,3', 5,5'-tetramethyl benzidine develop the color, have detected hydrogen peroxide and glucose.Its uv absorption spectra is with reference to Fig. 4.
It should be noted last that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. a method for ultrasonic synthesis hyperfluorescenceZeng Yongminggaoyingguang carbon point, it is characterized in that, preparation process is as follows:
(1) prepare mixed solution using the glucose of 0.1 ~ 5mol/L as carbon source, be carry out supersound process to described mixed solution under the environment of 1 ~ 14 in pH scope, the treatment time is 0.5 ~ 5h;
(2) add 0.1 ~ 5mol/L alcohol in the mixed solution obtained in described step (1) or amino acid makes modifier, ageing 1 ~ 48h under the katalysis of inorganic salt catalyst, namely obtain the carbon point aqueous solution of hyperfluorescenceZeng Yongminggaoyingguang.
2. the method for ultrasonic synthesis hyperfluorescenceZeng Yongminggaoyingguang carbon point according to claim 1, it is characterized in that, described modifier is methyl alcohol, glycerine, ethanol or halfcystine.
3. the method for ultrasonic synthesis hyperfluorescenceZeng Yongminggaoyingguang carbon point according to claim 1, it is characterized in that, described inorganic salt catalyst is Silver Nitrate, cupric chloride or magnesium sulfate.
4. an application for hyperfluorescenceZeng Yongminggaoyingguang carbon point, is characterized in that, described hyperfluorescenceZeng Yongminggaoyingguang carbon point can be used as catalase and carrys out catalysis glucose oxidase.
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Cited By (10)
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| CN104830326A (en) * | 2015-05-06 | 2015-08-12 | 长江师范学院 | Preparation method of sulfur doped carbon nano dot |
| CN106053408A (en) * | 2016-05-17 | 2016-10-26 | 无锡市疾病预防控制中心 | Carbon dot fluorescent probe based high sensitive and high selective method for detecting trace silver nano particles in water and/or environment |
| CN107626336A (en) * | 2017-09-22 | 2018-01-26 | 陕西科技大学 | A kind of preparation method and application of carbon point/class graphite phase carbon nitride composite photo-catalyst |
| CN107652970A (en) * | 2017-09-08 | 2018-02-02 | 西北师范大学 | A kind of preparation method and application of carbon-based nano hybrid material |
| CN108165606A (en) * | 2017-12-17 | 2018-06-15 | 江南大学 | Using carbon dots as the Assay of acid phosphatase content method of photolytic activity analogue enztme |
| CN108318438A (en) * | 2018-01-19 | 2018-07-24 | 广东工业大学 | The detection method of Ag doping fluorescent carbon quantum dot, preparation method and cholesterol |
| CN108531169A (en) * | 2018-05-21 | 2018-09-14 | 中国科学院长春光学精密机械与物理研究所 | Pure carbon nano dot of solid luminescent and preparation method thereof, white light LEDs, visible optical communication |
| CN108562564A (en) * | 2018-03-29 | 2018-09-21 | 青岛大学 | A kind of carbon quantum dot and preparation method and application for the detection of dextrase activity |
| CN109879272A (en) * | 2019-04-16 | 2019-06-14 | 云南大学 | A method of multicolor fluorescence carbon quantum dot is prepared with tobacco wastewater |
| CN112961669A (en) * | 2021-02-01 | 2021-06-15 | 苏州星烁纳米科技有限公司 | Preparation method of solid-phase carbon quantum dot, solid-phase carbon quantum dot prepared by same and light-emitting device |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104830326A (en) * | 2015-05-06 | 2015-08-12 | 长江师范学院 | Preparation method of sulfur doped carbon nano dot |
| CN106053408A (en) * | 2016-05-17 | 2016-10-26 | 无锡市疾病预防控制中心 | Carbon dot fluorescent probe based high sensitive and high selective method for detecting trace silver nano particles in water and/or environment |
| CN106053408B (en) * | 2016-05-17 | 2019-02-15 | 无锡市疾病预防控制中心 | Carbon dots fluorescence probe detects in water and/or the method for Environmental Trace Nano silver grain |
| CN107652970A (en) * | 2017-09-08 | 2018-02-02 | 西北师范大学 | A kind of preparation method and application of carbon-based nano hybrid material |
| CN107652970B (en) * | 2017-09-08 | 2020-12-25 | 西北师范大学 | Preparation method and application of carbon-based nano hybrid material |
| CN107626336B (en) * | 2017-09-22 | 2020-09-15 | 陕西科技大学 | Preparation method and application of carbon dot/graphite-like phase carbon nitride composite photocatalyst |
| CN107626336A (en) * | 2017-09-22 | 2018-01-26 | 陕西科技大学 | A kind of preparation method and application of carbon point/class graphite phase carbon nitride composite photo-catalyst |
| CN108165606A (en) * | 2017-12-17 | 2018-06-15 | 江南大学 | Using carbon dots as the Assay of acid phosphatase content method of photolytic activity analogue enztme |
| CN108318438A (en) * | 2018-01-19 | 2018-07-24 | 广东工业大学 | The detection method of Ag doping fluorescent carbon quantum dot, preparation method and cholesterol |
| CN108562564A (en) * | 2018-03-29 | 2018-09-21 | 青岛大学 | A kind of carbon quantum dot and preparation method and application for the detection of dextrase activity |
| CN108531169A (en) * | 2018-05-21 | 2018-09-14 | 中国科学院长春光学精密机械与物理研究所 | Pure carbon nano dot of solid luminescent and preparation method thereof, white light LEDs, visible optical communication |
| CN109879272A (en) * | 2019-04-16 | 2019-06-14 | 云南大学 | A method of multicolor fluorescence carbon quantum dot is prepared with tobacco wastewater |
| CN109879272B (en) * | 2019-04-16 | 2022-07-15 | 云南大学 | Method for preparing multicolor fluorescent carbon quantum dots by using tobacco wastewater |
| CN112961669A (en) * | 2021-02-01 | 2021-06-15 | 苏州星烁纳米科技有限公司 | Preparation method of solid-phase carbon quantum dot, solid-phase carbon quantum dot prepared by same and light-emitting device |
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Application publication date: 20141224 |