CN106590640A - Application of carbon dots in light conversion of agricultural production as agricultural light conversion material - Google Patents
Application of carbon dots in light conversion of agricultural production as agricultural light conversion material Download PDFInfo
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- CN106590640A CN106590640A CN201610952169.6A CN201610952169A CN106590640A CN 106590640 A CN106590640 A CN 106590640A CN 201610952169 A CN201610952169 A CN 201610952169A CN 106590640 A CN106590640 A CN 106590640A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/65—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing carbon
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
Abstract
The invention belongs to the technical field of agricultural light conversion, and discloses an application of carbon dots in the light conversion of agricultural production as an agricultural light conversion material. Carbon dots are directly used as an agricultural light conversion material and applied to agricultural production; an excellent light conversion effect is obtained, and the cost is low. The carbon dots are used as an agricultural light conversion material in the light conversion of agricultural production; and the carbon dots are at least one of red light carbon dot and blue light carbon dot. Compared with other fluorescence materials, the used carbon dots have the advantages of easily-available and abundant raw materials, simple synthesis process, green and environment-friendly technology, and no aftertreatment pollutant, and the industrial massive production can be realized. The prepared fluorescent carbon dots are small in size (less than 10 nm), are nontoxic, have good biocompatibility, a stable luminescent property, and a low cost, can be used as a light conversion agent to promote the production of various crops, and improve the yield and quality of crops.
Description
Technical field
The invention belongs to agricultural turn light technical field, more particularly to carbon point turns light as agricultural light conversion agent in agricultural production
In application.The present invention, directly as agricultural light conversion agent, in being applied to agricultural production, can obtain excellent turning with carbon point
Light effect, and it is with low cost.
Background technology
Sunlight is that plant carries out photosynthetic energy source, mainly by ultraviolet light, it is seen that light and infrared light are constituted.Its
In, HONGGUANG (600～700nm) contributes to yielding positive results for plant；Blue light (400～500nm) promotes the stem and leaf growth of plant；And
Ultraviolet light (being less than 400nm) is unfavorable for photosynthesis, suppresses mature plant growth.Light conversion agent is then that a class can be by sunlight
The ultraviolet light and useless green glow that are harmful to photosynthesis of plant are converted into HONGGUANG or blue light needed for photosynthesis.In addition, big
The data of amount are also indicated that：The use of light conversion agent can effectively improve luminous energy comprehensive utilization ratio, be conducive to the growth of plant, promote to plant
The precocious and volume increase of thing.
The light conversion agent of early stage, main employing is that sulphide fluorescent material is incorporated in agricultural polyethylene film, such as Chinese patent
" light conversion master batch and preparation method thereof " that number CN103160009A is proposed.Its synthesis material includes sulfide, with current green
The concept of environmental protection runs in the opposite direction.Then in 2015, researcher has also been proposed Nitride phosphor as light conversion agent, such as China
" a kind of light altering film for agriculture and preparation method and application " described in patent No. CN105385014A.But still there are problems that：
(1) the synthesis high cost of light conversion agent, particularly some red light conversion agents, it is expensive using rare earth ion as activator；
(2) size of light conversion agent is larger, causes to be incorporated into after thin film, and the light transmittance of material declines, and affects absorption of the plant to visible ray.
In order to solve above-mentioned two problems, the present invention proposes a kind of new and effective light conversion agent --- fluorescent carbon point.With
Other fluorescent materials are compared, carbon point, a kind of carbon-based fluorescent nano material, stable in properties with abundant raw material, small toxicity, biological
The compatibility is good, many advantages, such as low cost, and is sized generally below 10nm.At present, the synthetic method of carbon point is a lot, and the present invention is adopted
Method mainly includes solvent-thermal method, hydro-thermal method and tube furnace calcination method.Wherein, the raw material of preparation is divided into biomass original
Material, mainly there is peel, bark, straw, natural product etc.；With conventional chemical reagent raw material, predominantly organic amine, organic acid,
Organic Alcohol and its binary or ternary system of aldehyde ketone mixing etc..
The content of the invention
In order to overcome the shortcoming and deficiency of above-mentioned prior art, the primary and foremost purpose of the present invention is to provide carbon point as agricultural
Light conversion agent turns the application in light in agricultural production.Carbon point, it has new and effective property.
Another object of the present invention is to provide a kind of preparation method of above-mentioned carbon point.The simple ring of the inventive method preparation process
Protect, abundant raw material is easy to get, be capable of achieving a large amount of productions.
The purpose of the present invention is realized by following proposal：
Carbon point turns the application in light as agricultural light conversion agent in agricultural production, and the carbon point is HONGGUANG carbon point and blue-light carbon
At least one in point.
The fluorescence emission peak of described HONGGUANG carbon point is between 600～700nm.
The fluorescence emission peak of described blue-light carbon point is between 400～500nm.
The present invention, directly as agricultural light conversion agent, directly applies to agricultural production and turns in light, by the sun by by carbon point
Ultraviolet light and a part of useful green glow in light is converted into the HONGGUANG useful to plant growing or blue light, realizes efficient light-conversion,
Promote the growth of crops.And light conversion agent of the present invention without the need for other material with complex compoundings such as other rare earth elements, directly make
Efficiently turn light effect with i.e. achievable.
The present invention also provides a kind of preparation method of above-mentioned carbon point, is organic matter pyrolysis method, including solvent-thermal method, hydro-thermal method
And tube furnace calcination method.
Above-mentioned preparation method specifically includes following steps：
(1) solvent-thermal method：In adding the raw material into solvent, mix homogeneously, reaction, separating-purifying obtains carbon point；
(2) hydro-thermal method：In adding raw materials into water, reaction, separating-purifying obtains carbon point；
(3) tube furnace calcination method：Add raw materials in tube furnace and calcine, separating-purifying obtains carbon point.
In above-mentioned preparation method, (1) solvent-thermal method：The condition of the reaction is 1～24h of reaction at 150～300 DEG C.Institute
The container for stating reaction is preferably autoclave.
In above-mentioned preparation method, (2) hydro-thermal method：The condition of the reaction is 1～24h of reaction at 150～300 DEG C.It is described
The container of reaction is preferably autoclave.
In above-mentioned preparation method, (3) tube furnace calcination method：The condition of the calcining be 200～600 DEG C at calcining 1～
24h.The container of the calcining is preferably high temperature resistant magnetic boat.
Described separating-purifying, it may include the traditional extraction process such as dialysis, centrifugation, filtration and drying.
In above-mentioned preparation method, described raw material is biomass material or chemical reagent.
Described biomass material refers to peel, bark, straw, natural product etc..
Described chemical reagent refers to binary or ternary system of the mixing of organic amine, organic acid, Organic Alcohol and its aldehyde ketone etc..
The inventive method is carried out processing and obtains carbon point using organic matter pyrolysis method to biomass material or chemical reagent, this
Bright preparation process is not only simple to operate, low cost, environmental protection, applied widely, and fluorescence quantum efficiency is high, can be a large amount of
Production.In addition, the carbon point for preparing has good biocompatibility, it is expected to be applied to agricultural turn light aspect.
The present invention has the following advantages and beneficial effect relative to prior art：
(1) compared with other fluorescent materials, carbon point its abundant raw material that the present invention is used is easy to get, and building-up process is simple, whole
Individual technique environmental protection, does not have post processing pollutant, is capable of achieving industrial mass production.
(2) fluorescent carbon point prepared by the present invention, not only size is little, less than 10nm and nontoxic, good biocompatibility, sends out
Optical property is stablized, with low cost, and being applied to agricultural production in this, as light conversion agent can promote the production of various crop, improve crop
Yield and quality.
Description of the drawings
Fig. 1 is the fluorescence spectra of high-efficiency fluorescence carbon point prepared by embodiment 1；
Fig. 2 is the scanning electron microscope (SEM) photograph of high-efficiency fluorescence carbon point prepared by embodiment 1；
Fig. 3 is the fluorescence spectra of high-efficiency fluorescence carbon point prepared by embodiment 2；
Fig. 4 is the scanning electron microscope (SEM) photograph of high-efficiency fluorescence carbon point prepared by embodiment 3；
Fig. 5 is the fluorescence electron microscope of high-efficiency fluorescence carbon point prepared by embodiment 3；
Fig. 6 is the fluorescence spectra of high-efficiency fluorescence carbon point prepared by embodiment 4；
Fig. 7 is the scanning electron microscope (SEM) photograph of high-efficiency fluorescence carbon point prepared by embodiment 4；
Fig. 8 is the fluorescence spectra of high-efficiency fluorescence carbon point prepared by embodiment 5；
Fig. 9 is the fluorescence spectra of high-efficiency fluorescence carbon point prepared by embodiment 6；
Figure 10 is the fluorescence spectra of high-efficiency fluorescence carbon point prepared by embodiment 7.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Reagent used can be obtained from commercial channel in the following example.
Embodiment 1
The preparation of carbon point uses organic amine and Organic Acid System, representative raw material be silane coupler (KH-602) and
Citric acid, the method for synthesis is solvent-thermal method, is divided into following three step：
(1) in measuring autoclaves of the KH-602 of 100mL as solvent to 250mL, the anhydrous Fructus Citri Limoniae of 10g is added
Acid, is uniformly mixed after magnetic agitation 10min.
(2) 240 DEG C are warming up under the shielding gas of nitrogen, are reacted 20 minutes.The color of solution is changed into brown color, stops anti-
Should.
(3) by the product of reaction petroleum ether three times, cold preservation is standby in refrigerator.
The fluorescent carbon point of gained is blue-light-emitting under uviol lamp, and fluorescence spectrum is as shown in Figure 1.As shown in Figure 1, fluorescent carbon
Point can effectively absorb the ultraviolet light of 370nm or so, launch the blue light of 470nm or so, so as to effectively illustrate fluorescent carbon point
Blue light can be converted ultraviolet light into.Transmission electron microscope observing (such as Fig. 2), the particle diameter of carbon point illustrates the particle diameter of carbon point in 4nm or so
Size is little, is suitable as light conversion agent, in membrane formation mechanism is added to, will not reduce the transparency of thin film.
Embodiment 2
The preparation of carbon point uses organic amine and Organic Alcohol system, and raw material is p-phenylenediamine and ethanol, the method for synthesis
It is solvent-thermal method, is divided into following three step：
(1) p-phenylenediamine of precise 0.3g and the ethanol of 30mL are uniform in reactor by ultrasound as reactant
Mixing.
(2) whole reactor is moved in air dry oven, it is 180 DEG C to arrange reaction temperature, and the time is 12 hours.
(3) reactant of cooling is carried out into separating-purifying, you can obtain fluorescent carbon point.
The fluorescent carbon point of gained is emitting red light under uviol lamp, and fluorescence spectrum is as shown in Figure 3.From the figure 3, it may be seen that fluorescent carbon
Point can effectively absorb the ultraviolet light of 360nm or so and 520 or so invalid gold-tinted, launch the HONGGUANG of 610nm or so, so as to
Effectively illustrating fluorescent carbon point can change useful HONGGUANG by harmful ultraviolet light and invalid gold-tinted.
Embodiment 3
The preparation of carbon point uses organic amine and Organic Alcohol system, and raw material is ethylenediamine and polyvinyl alcohol, the side of synthesis
Method is hydro-thermal method, is divided into following four step：
(1) polyvinyl alcohol for weighing 1g is dissolved in the distilled water of 20mL, adds the ethylenediamine of 0.75mL in reactor
Middle mix homogeneously.
(2) whole reactor is put in air dry oven, reacts 10 hours under the conditions of 220 DEG C.After natural cooling,
The suspension of brown is obtained.
(3) by adding excessive acetone, unreacted polyvinyl alcohol is precipitated out, is carried out point through sucking filtration is centrifuged
From.
(4) through being freeze-dried to obtain carbon point powder.
The carbon point prepared by transmission electron microscope observing (such as Fig. 4), the particle diameter of carbon point illustrates the particle diameter of carbon point in 6nm or so
Size is little, is suitable as light conversion agent, in membrane formation mechanism is added to, will not reduce the transparency of thin film.Fluorescent carbon point is in purple
It is blue-light-emitting under outer lamp, fluorescence spectrum is as shown in Figure 5.As shown in Figure 5, fluorescent carbon point can effectively absorb 340nm's or so
Ultraviolet light, launches the blue light of 420nm or so, and so as to effectively illustrate fluorescent carbon point blue light can be converted ultraviolet light into.
Embodiment 4
Carbon point can also be extracted from biomass and obtained, including Bombyx bombycis, Pollen Brassicae campestriss, Pericarpium Musae, Cortex cocois radicis (Cocos nucifera L.), Cortex Cunninghamiae Lanceolatae,
Bagasse etc..The method for preparing carbon point using dioxygen water process Bombyx bombycis, comprises the following steps that：
(1) Bombyx bombycis mass fraction is 5%Na2CO3Solution boils 30 minutes, after washing with alcohol 3 times, in 60 DEG C of baking ovens
It is dried 24 hours.
(2) 0.5g Bombyx bombycis are weighed in the reactor of 50mL, and measures 3.0% hydrogen peroxide of 30mL and added, at 260 DEG C
At a temperature of hydro-thermal reaction 50 minutes, you can obtain the carbon dots solution of yellowish-brown.
(3) carbon dots solution for obtaining is carried out into rotary evaporation, and lyophilization, you can obtain solid carbon point, and is put in 4 DEG C
Refrigerator storage.
The fluorescent carbon point of gained is blue-light-emitting under uviol lamp, and fluorescence spectrum is as shown in Figure 6.It will be appreciated from fig. 6 that fluorescent carbon
Point can effectively absorb the ultraviolet light of 380nm or so, launch the blue light of 470nm or so, so as to effectively illustrate fluorescent carbon point
Blue light can be converted ultraviolet light into.By transmission electron microscope observing (such as Fig. 7), the particle diameter of carbon point illustrates carbon point in 8nm or so
Grain size is little, is suitable as light conversion agent, in membrane formation mechanism is added to, will not reduce the transparency of thin film.
Embodiment 5
The preparing raw material of carbon point uses biomass, can choose Bombyx bombycis, pollen, Pericarpium Musae, Cortex cocois radicis (Cocos nucifera L.), bark, Caulis Sacchari sinensis
One kind in slag etc., the method for synthesis is tube furnace calcination method.By taking Bombyx bombycis as an example：
(1) Bombyx bombycis mass fraction is 5%Na2CO3Solution boils 30 minutes, after washing with alcohol 3 times, in 60 DEG C of baking ovens
Dry 24 hours standby.
(2) weigh 0.8g process after Bombyx bombycis, make reactor with high temperature resistant magnetic boat, by tube furnace nitrogen shielding gas
Lower calcining, temperature setting is 300 DEG C, 4 hours time.Reactant is taken out after programmed cooling.
(3) ultrasonic disperse is in the deionized water of 10mL after reactant is pulverized, Jing after diafiltration, you can obtain
Carbon dots solution.
The fluorescent carbon point of gained is blue-light-emitting under uviol lamp, and fluorescence spectrum is as shown in Figure 8.As shown in Figure 8, fluorescent carbon
Point can effectively absorb the ultraviolet light of 340nm or so, launch the blue light of 430nm or so, so as to effectively illustrate fluorescent carbon point
Blue light can be converted ultraviolet light into.
Embodiment 6
The preparation of carbon point uses binary organic amine system, and raw material is p-phenylenediamine and carbamide, and the method for synthesis is water
Full-boiled process, its step is as follows：
(1) (mass ratio is 1 to weigh 0.2g carbamide and 0.2g p-phenylenediamine respectively:1) in being dissolved in 50mL deionized waters,
Reactor is transferred to after even mixing.
(2) reactor is put in 160 DEG C of air dry ovens and is reacted 10 hours, takes out anti-after it naturally cools to room temperature
Answer liquid.
(3) reactant of cooling is carried out into separating-purifying, you can obtain fluorescent carbon point.
Carbon point is presented emitting red light under uviol lamp, its fluorescence spectrum such as Fig. 9.As shown in Figure 9, fluorescent carbon point can be effective
The blue light of 450nm or so is absorbed, launches the HONGGUANG of 620nm or so, blue light can be turned so as to effectively illustrate fluorescent carbon point
Change HONGGUANG into, increase red-blue ratio, it is adaptable to HONGGUANG than more sensitive crop light conversion agent.
Embodiment 7
The preparation of carbon point uses organic amine and Organic Alcohol system, and raw material is polyethyleneimine and ethylene glycol, its process
It is as follows：
(1) 0.5g polyethyleneimine and 10mL ethylene glycol are dissolved in 2mL deionized waters, then, are placed in adding for large beaker
Heat cover, is warming up to 180 DEG C, until solution is changed into orange gel.
(2) 4g phosphoric acid is added toward above-mentioned gel, 20mL deionized waters are added, is stirred strongly under magnetic stirrer effect
Mix 1 hour.
(3) appropriate alkali is added in solution so as to which pH value removes precipitate, supernatant 7 or so after standing 24 hours
The carbon point for needed for.
The fluorescent carbon point of gained is emitting red light under uviol lamp, and fluorescence spectrum is as shown in Figure 10.As shown in Figure 10, fluorescence
Carbon point can effectively absorb the blue light of 470nm or so, launch the HONGGUANG of 620nm or so, so as to effectively illustrate fluorescent carbon point
HONGGUANG can be converted blue light into, red-blue ratio is increased, it is adaptable to HONGGUANG than more sensitive crop light conversion agent.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention not by above-described embodiment
Limit, other any spirit without departing from the present invention and the change, modification, replacement made under principle, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (9)
1. carbon point turns the application in light as agricultural light conversion agent in agricultural production, it is characterised in that the carbon point is HONGGUANG carbon point
With at least one in blue-light carbon point.
2. carbon point according to claim 1 turns the application in light as agricultural light conversion agent in agricultural production, and its feature exists
In：The fluorescence emission peak of described HONGGUANG carbon point is between 600～700nm；The fluorescence emission peak of described blue-light carbon point is 400
Between～500nm.
3. carbon point according to claim 1 turns the application in light as agricultural light conversion agent in agricultural production, and its feature exists
In：Described carbon point is obtained by the preparation method for comprising the following steps：
(1) solvent-thermal method：In adding the raw material into solvent, mix homogeneously, reaction, separating-purifying obtains carbon point；
(2) hydro-thermal method：In adding raw materials into water, reaction, separating-purifying obtains carbon point；
(3) tube furnace calcination method：Add raw materials in tube furnace and calcine, separating-purifying obtains carbon point.
4. carbon point according to claim 3 turns the application in light as agricultural light conversion agent in agricultural production, and its feature exists
In：In the preparation method, (1) solvent-thermal method：The condition of the reaction is 1～24h of reaction at 150～300 DEG C；The reaction
Container be autoclave.
5. carbon point according to claim 3 turns the application in light as agricultural light conversion agent in agricultural production, and its feature exists
In：In the preparation method, (2) hydro-thermal method：The condition of the reaction is 1～24h of reaction at 150～300 DEG C；The reaction
Container is autoclave.
6. carbon point according to claim 3 turns the application in light as agricultural light conversion agent in agricultural production, and its feature exists
In：In the preparation method, (3) tube furnace calcination method：The condition of the calcining is 1～24h of calcining at 200～600 DEG C；It is described
The container of calcining is high temperature resistant magnetic boat.
7. carbon point according to claim 3 turns the application in light as agricultural light conversion agent in agricultural production, and its feature exists
In：Described raw material is biomass material or chemical reagent.
8. carbon point according to claim 5 turns the application in light as agricultural light conversion agent in agricultural production, and its feature exists
In：Described biomass material refers to peel, bark, straw or natural product.
9. carbon point according to claim 5 turns the application in light as agricultural light conversion agent in agricultural production, and its feature exists
In：Described chemical reagent refers to the binary or ternary system of organic amine, organic acid, Organic Alcohol and its aldehyde ketone mixing.
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| CN109054829A (en) * | 2018-08-29 | 2018-12-21 | 济南大学 | A kind of palm bark is the preparation method of carbon source praseodymium doped carbon quantum dot composite material |
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| CN109110746A (en) * | 2018-11-06 | 2019-01-01 | 湖南农业大学 | It is a kind of using livestock and poultry blood as raw material prepare fluorescent carbon point method and its manufactured fluorescent carbon point |
| CN109110747A (en) * | 2018-11-06 | 2019-01-01 | 湖南农业大学 | It is a kind of using extract oil residue as raw material prepare fluorescent carbon point method and its manufactured fluorescent carbon point |
| CN111661833A (en) * | 2019-03-06 | 2020-09-15 | 屈小涵 | Nano carbon dots (particles) extracted from plant ash and application thereof |
| CN110054171A (en) * | 2019-04-25 | 2019-07-26 | 贺州学院 | A kind of preparation method of biomass near-infrared fluorescent carbon dots |
| CN111977632A (en) * | 2019-05-22 | 2020-11-24 | 东北林业大学 | Green preparation method of spinach-based multicolor luminescent carbon quantum dots |
| CN112210365B (en) * | 2019-07-11 | 2022-08-19 | 天津大学 | Method for preparing nano zirconium dioxide carbon quantum dot composite material by one-pot method |
| CN112210365A (en) * | 2019-07-11 | 2021-01-12 | 天津大学 | Method for preparing nano zirconium dioxide carbon quantum dot composite material by one-pot method |
| CN111662524A (en) * | 2020-05-26 | 2020-09-15 | 华南农业大学 | Red fluorescent carbon dot light conversion film and preparation method and application thereof |
| CN111662524B (en) * | 2020-05-26 | 2021-09-07 | 华南农业大学 | Red fluorescent carbon dot light conversion film and preparation method and application thereof |
| CN112779006A (en) * | 2020-12-31 | 2021-05-11 | 苏州国纳思新材料科技有限公司 | Preparation method of photoluminescence wavelength-stable red light carbon dots |
| CN112790064A (en) * | 2021-01-08 | 2021-05-14 | 华南农业大学 | Luminous edible fungus cultivation method based on carbon-based fluorescent nano material |
| CN112979353A (en) * | 2021-01-12 | 2021-06-18 | 华南农业大学 | Preparation method and application of low-cost environment-friendly carbon quantum dot nano fertilizer |
| CN113023708A (en) * | 2021-02-24 | 2021-06-25 | 云南大学 | Method for separating and extracting carbon dots from biomass combustion smoke dust and functionalizing carbon dots |
| CN113023708B (en) * | 2021-02-24 | 2023-10-27 | 云南大学 | Method for separating and extracting carbon dots from biomass combustion smoke dust and functionalization thereof |
| CN112960665A (en) * | 2021-04-09 | 2021-06-15 | 山东农业大学 | Preparation method of red and blue light double-emission carbon dots and application of red and blue light double-emission carbon dots in plants |
| CN114605991A (en) * | 2022-03-24 | 2022-06-10 | 辽宁科技大学 | Berberis pruinosa carbon dot, light conversion film, preparation method and application thereof |
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Application publication date: 20170426 |