CN104192828B - A kind of be raw water thermal synthesis carbon quantum dot with Cotton Gossypii method - Google Patents
A kind of be raw water thermal synthesis carbon quantum dot with Cotton Gossypii method Download PDFInfo
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- CN104192828B CN104192828B CN201410424098.3A CN201410424098A CN104192828B CN 104192828 B CN104192828 B CN 104192828B CN 201410424098 A CN201410424098 A CN 201410424098A CN 104192828 B CN104192828 B CN 104192828B
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Abstract
The invention discloses a kind of based on the method that Cotton Gossypii is raw water thermal synthesis carbon quantum dot.Concretely comprising the following steps, weigh a certain amount of Cotton Gossypii and acidic catalyst, add in suitable quantity of water, hydro-thermal reaction a period of time, product, by filtering and dialysis, obtains carbon quantum dot.These carbon source wide material sources, can prepare in a large number, and preparation process is simple, is a kind of method of green syt carbon quantum dot.
Description
Technical field
The present invention relates to technical field prepared by nano material, particularly relating to a kind of is raw water thermal synthesis carbon based on Cotton Gossypii
The method of quantum dot.
Background technology
As the carbon family nano material of a kind of novelty, carbon quantum dot have excellence water solublity, biocompatibility,
Anti-light fluorescence property Bleachability, adjustable, is widely used in bio-imaging, photocatalysis, solaode etc.
Field.
Hydrothermal synthesis method is high due to reaction yield, and the granule of synthesis is uniform, is widely used in the conjunction of carbon quantum dot
Become.For the building-up process of carbon quantum dot, in current research many counting methods need strict experiment condition or
The special energy, causes cost high, it is thus achieved that carbon quantum dot productivity relatively low.
Through retrieval, the Chinese invention patent of Publication No. CN103832993A, disclose a kind of by carbon hydrate
The method of the luminous carbon point of thing preparation: the carbohydrate of different mol ratio is mixed with the dressing agent with amino,
Utilizing hydro-thermal method, after the reaction regular hour, filter, regulation pH is to neutral, and dialysis purifies, and it is unnecessary to remove
Salinity, obtains carbohydrate-based luminescence carbon point.Use the luminous carbon quantum dot of method preparation of the present invention, use
Carbohydrate is raw material, and raw material is easy to get, low cost, and gained carbon point quantum yield is high, the letter of preparation technology equipment
Easily, all can complete at general chemical laboratory, it is easy to promote, but reaction in carbohydrate with amino
The ratio of dressing agent and response parameter have strict control.
For another example, the Chinese invention patent of Publication No. CN102583307B, disclose and " a kind of egg extracts
Carbon quantum dot, preparation method and applications ".It is characterized in that comprising the following steps: a, utilize Ovum Gallus domesticus album to separate
Fresh Ovum Gallus domesticus album and egg yolk are kept completely separate by device, use preposition cold preservation in refrigerator；B, will separate after Ovum Gallus domesticus album or
Egg yolk is placed in glass dish, utilizes low temperature plasma directly it to be carried out body process, obtains black solid and produces
Thing；C, black solid product is scattered in solvent, carries out supersound process after magnetic agitation, make sample dispersion equal
Even；D, the suspension of gained is centrifuged off precipitation, then with ultrafilter membrane, supernatant is separated, collect and filter
Liquid, obtains fluorescent carbon quantum dot after drying.The raw material that this invention uses egg to be preparation carbon quantum dot, source side
Just, but raw material needs cold preservation before using, and preparation process is more, is not suitable for the production of scale.
Therefore, those skilled in the art is devoted to develop that a kind of raw material sources are extensive, the simple method of preparation process,
Thus carbon quantum dot is prepared in scale.
Summary of the invention
Because the drawbacks described above of prior art, the technical problem to be solved is to prepare carbon quantum for scale
Point exploitation a kind of carbon source wide material sources, the simple method of preparation process.
For achieving the above object, the invention provides a kind of new method being raw water thermal synthesis carbon quantum dot with Cotton Gossypii.
The purpose of the present invention can be achieved through the following technical solutions: a kind of is raw water thermal synthesis carbon amounts based on Cotton Gossypii
The method of son point, specifically includes following steps:
Step one, is added to the water the Cotton Gossypii through weighing and acid catalyst；
Step 2, carries out hydro-thermal reaction by the mixture of step one；
Step 3, the product utilization cellulose filter membrane filtration that step 2 is obtained, then obtain pure with bag filter dialysis
Clean carbon quantum dot.
In described step one, the quality of Cotton Gossypii is 10mg～5g, and acidic catalyst is for including p-methyl benzenesulfonic acid, lemon
The acidic catalysts such as lemon acid, dilute sulfuric acid, the quality of acidic catalyst is 10mg～2g, and the amount of water is 5～500mL.
The time of the hydro-thermal in described step 2 is 4～36h, and the temperature of hydro-thermal is 120～220 DEG C.
The aperture of the cellulose filter film in described step 3 is 100nm～1 μm, and the molecular cut off of bag filter is
100～3000Da.
The present invention has the following technical effect that in the method that the present invention uses, and carbon source wide material sources can be prepared in a large number,
Preparation process is simple, quick, is a kind of method of green syt carbon quantum dot, and is prepared by applicable scale.
Below with reference to accompanying drawing, the technique effect of design, concrete structure and the generation of the present invention is described further, with
It is fully understood from the purpose of the present invention, feature and effect.
Accompanying drawing explanation
Fig. 1 is Cotton Gossypii and the UV, visible light of p-methyl benzenesulfonic acid generation carbon quantum dot of a preferred embodiment of the present invention
Abosrption spectrogram；
Fig. 2 is Cotton Gossypii and the fluorescence spectrum of p-methyl benzenesulfonic acid generation carbon quantum dot of a preferred embodiment of the present invention
Figure；
Fig. 3 is the synthesis schematic diagram of the present invention.
Detailed description of the invention
Elaborating embodiments of the invention below in conjunction with the accompanying drawings, the present embodiment is with technical solution of the present invention
Implement under premised on, give detailed embodiment and concrete operating process, but the protection of the present invention
Scope is not limited to following embodiment.
Embodiment 1
Step 1, takes 0.3g Cotton Gossypii and 400mg p-methyl benzenesulfonic acid, adds in 25ml water；
Step 2,200 DEG C of hydro-thermal reactions 5h；
Step 3, utilizes 200 μm cellulose filter membrane filtrations, then obtains pure with the dialysis of 1000Da bag filter
Carbon quantum dot.
Embodiment 2
Step 1, takes 0.3g Cotton Gossypii and 150mg p-methyl benzenesulfonic acid, adds in 25ml water；
Step 2,200 DEG C of hydro-thermal reactions 5h；
Step 3, utilizes 200 μm cellulose filter membrane filtrations, then obtains pure with the dialysis of 1000Da bag filter
Carbon quantum dot.
Embodiment 3
Step 1, takes 0.3g Cotton Gossypii and 60mg p-methyl benzenesulfonic acid, adds in 25ml water；
Step 2,200 DEG C of hydro-thermal reactions 5h；
Step 3, utilizes 200 μm cellulose filter membrane filtrations, then obtains pure with the dialysis of 1000Da bag filter
Carbon quantum dot.
Embodiment 4
Step 1, takes 0.1g Cotton Gossypii and 0.5g citric acid, adds in 10ml water；
Step 2,180 DEG C of hydro-thermal reactions 10h；
Step 3, utilizes 200 μm cellulose filter membrane filtrations, then obtains pure with the dialysis of 1000Da bag filter
Carbon quantum dot.
The preferred embodiment of the present invention described in detail above.Should be appreciated that those of ordinary skill in the art without
Need creative work just can make many modifications and variations according to the design of the present invention.Therefore, all in the art
Technical staff the most on the basis of existing technology can by logical analysis, reasoning, or a limited experiment
With the technical scheme obtained, all should be in the protection domain being defined in the patent claims.
Claims (7)
1. one kind based on the method that Cotton Gossypii is raw water thermal synthesis carbon quantum dot, it is characterised in that comprise the following steps:
Step one, is added to the water the Cotton Gossypii through weighing and acidic catalyst；
Step 2, carries out hydro-thermal reaction by the mixture of step one；
Step 3, the product utilization cellulose filter membrane filtration that step 2 is obtained, then obtain pure carbon quantum dot with bag filter dialysis；
Wherein, described acidic catalyst includes p-methyl benzenesulfonic acid, citric acid；Wherein, the temperature of described hydro-thermal reaction is 180～200 DEG C.
The most according to claim 1 a kind of based on the method that Cotton Gossypii is raw water thermal synthesis carbon quantum dot, it is characterised in that the quality of described Cotton Gossypii is 10mg～5g.
The most according to claim 1 a kind of based on the method that Cotton Gossypii is raw water thermal synthesis carbon quantum dot, it is characterised in that the quality of described acidic catalyst is 10mg～2g.
The most according to claim 1 a kind of based on the method that Cotton Gossypii is raw water thermal synthesis carbon quantum dot, it is characterised in that the volume of described water is 5～500mL.
The most according to claim 1 a kind of based on the method that Cotton Gossypii is raw water thermal synthesis carbon quantum dot, it is characterised in that the time of described hydro-thermal reaction is 4～36h.
The most according to claim 1 a kind of based on the method that Cotton Gossypii is raw water thermal synthesis carbon quantum dot, it is characterised in that the aperture of described cellulose filter film is 100nm～1 μm.
The most according to claim 1 a kind of based on the method that Cotton Gossypii is raw water thermal synthesis carbon quantum dot, it is characterised in that the molecular cut off of described bag filter is 100～3000Da.
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Families Citing this family (13)
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| CN104560035B (en) * | 2014-12-30 | 2017-01-25 | 中国农业科学院农产品加工研究所 | Carbon quantum dot fluorescence labeling material with orange peels used as carbon source as well as preparation method and application of carbon quantum dot fluorescence labeling material |
| CN104629760B (en) * | 2015-02-09 | 2017-03-01 | 浙江师范大学 | One kind is used for detecting Hg in water2+And Fe3+Carbon quantum dot preparation method |
| CN106497562A (en) * | 2016-10-20 | 2017-03-15 | 广西壮族自治区林业科学研究院 | A kind of preparation method of carbon quantum dot |
| CN106474932B (en) * | 2016-10-21 | 2018-02-13 | 京东方科技集团股份有限公司 | Method, film and filter membrane of quantum dot purifying and preparation method thereof, centrifuge tube |
| CN107043097B (en) * | 2017-01-20 | 2019-04-19 | 西南大学 | By the method and its carbon dots of mushroom preparation carbon dots and application |
| CN107828410B (en) * | 2017-10-31 | 2019-05-21 | 东北林业大学 | A kind of preparation method of carbon quantum dot-molecular imprinting composite material and the remaining method of pesticide mesotrione is analyzed using its |
| CN108083259A (en) * | 2018-01-11 | 2018-05-29 | 史书亭 | The preparation method of carbon quantum dot |
| CN109321239B (en) * | 2018-11-22 | 2021-08-13 | 大连工业大学 | Sulfur-doped fluorescent carbon quantum dot and preparation method and application thereof |
| CN109292753A (en) * | 2018-12-06 | 2019-02-01 | 洛阳师范学院 | A kind of carbon quantum dot and its environment-friendly preparation method thereof and application |
| CN109911882B (en) * | 2019-03-21 | 2022-07-22 | 河北科技大学 | Application of ionic liquid in preparation of carbon quantum dots, and preparation method and application of carbon quantum dots |
| CN111792638A (en) * | 2020-06-28 | 2020-10-20 | 浙江工业大学 | Method for improving yield of biomass carbon quantum dots through dilute acid pretreatment |
| CN113265248B (en) * | 2021-06-11 | 2022-04-26 | 江南大学 | Orange red fluorescent carbon dot and preparation method thereof |
| CN113651312B (en) * | 2021-08-30 | 2023-01-17 | 新疆大学 | Carbon quantum dot gas-sensitive sensing material and preparation method and application thereof |
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| CN103832993A (en) * | 2012-11-23 | 2014-06-04 | 天津工业大学 | Method for preparing luminescent carbon dots from carbohydrate |
| CN103833029B (en) * | 2014-01-10 | 2016-03-02 | 云南师范大学 | The preparation method of the water-soluble sulphur of a kind of efficient multicolor fluorescence, oxygen codoped graphene quantum dot |
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