CN106111137A - A kind of preparation method and applications of carbon quantum dot Red copper oxide composite - Google Patents
A kind of preparation method and applications of carbon quantum dot Red copper oxide composite Download PDFInfo
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- CN106111137A CN106111137A CN201610453856.3A CN201610453856A CN106111137A CN 106111137 A CN106111137 A CN 106111137A CN 201610453856 A CN201610453856 A CN 201610453856A CN 106111137 A CN106111137 A CN 106111137A
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- quantum dot
- copper oxide
- carbon quantum
- red copper
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- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 20
- LBJNMUFDOHXDFG-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu].[Cu] LBJNMUFDOHXDFG-UHFFFAOYSA-N 0.000 title abstract description 18
- 239000011941 photocatalyst Substances 0.000 claims abstract description 8
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims abstract description 7
- 239000008103 glucose Substances 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 42
- 229910052799 carbon Inorganic materials 0.000 claims description 40
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 5
- 239000012498 ultrapure water Substances 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000000502 dialysis Methods 0.000 claims description 4
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 claims description 4
- 229940012189 methyl orange Drugs 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 239000004202 carbamide Substances 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 3
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- FNAQSUUGMSOBHW-UHFFFAOYSA-H calcium citrate Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O FNAQSUUGMSOBHW-UHFFFAOYSA-H 0.000 claims description 2
- 239000001354 calcium citrate Substances 0.000 claims description 2
- 229960004256 calcium citrate Drugs 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 claims description 2
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 239000004337 magnesium citrate Substances 0.000 claims description 2
- 229960005336 magnesium citrate Drugs 0.000 claims description 2
- 235000002538 magnesium citrate Nutrition 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000001508 potassium citrate Substances 0.000 claims description 2
- 229960002635 potassium citrate Drugs 0.000 claims description 2
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 claims description 2
- 235000011082 potassium citrates Nutrition 0.000 claims description 2
- 239000000376 reactant Substances 0.000 claims description 2
- 239000001509 sodium citrate Substances 0.000 claims description 2
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 2
- 235000013337 tricalcium citrate Nutrition 0.000 claims description 2
- PLSARIKBYIPYPF-UHFFFAOYSA-H trimagnesium dicitrate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O PLSARIKBYIPYPF-UHFFFAOYSA-H 0.000 claims description 2
- 239000000975 dye Substances 0.000 claims 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 239000006227 byproduct Substances 0.000 claims 1
- 229960004106 citric acid Drugs 0.000 claims 1
- 235000015165 citric acid Nutrition 0.000 claims 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 claims 1
- 229960001790 sodium citrate Drugs 0.000 claims 1
- 235000011083 sodium citrates Nutrition 0.000 claims 1
- 239000011593 sulfur Substances 0.000 claims 1
- 229910052717 sulfur Inorganic materials 0.000 claims 1
- 230000001699 photocatalysis Effects 0.000 abstract description 12
- 238000007146 photocatalysis Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000004094 surface-active agent Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- -1 Red copper oxide compound Chemical class 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229960004756 ethanol Drugs 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910001922 gold oxide Inorganic materials 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005297 material degradation process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- FJOLTQXXWSRAIX-UHFFFAOYSA-K silver phosphate Chemical compound [Ag+].[Ag+].[Ag+].[O-]P([O-])([O-])=O FJOLTQXXWSRAIX-UHFFFAOYSA-K 0.000 description 1
- 229940019931 silver phosphate Drugs 0.000 description 1
- 229910000161 silver phosphate Inorganic materials 0.000 description 1
- STZCRXQWRGQSJD-UHFFFAOYSA-M sodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate Chemical compound [Na+].C1=CC(N(C)C)=CC=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-UHFFFAOYSA-M 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/72—Copper
-
- B01J35/39—
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
The invention provides the preparation method of a kind of carbon quantum dot Red copper oxide composite and as the application of photocatalyst.The preparation method of the present invention is without any surfactant, with glucose as reducing agent, is an a kind of step in-situ preparation method simple and easy to control, and technique is simple, with low cost, practical, it is simple to commercial production in high volume；The composite morphology controllable obtained, photocatalysis efficiency is high, has good application prospect utilizing solar energy and the aspect such as curb environmental pollution.
Description
Technical field
The invention belongs to visible light catalytic material field, be specifically related to a kind of carbon quantum dot-Red copper oxide composite
Preparation method and the application as photocatalyst thereof.
Background technology
Photocatalyst based on quasiconductor, because can effectively utilize the advantage in terms of solar energy and environment purification, attracts
The concern of increasing scholar.Red copper oxide is a kind of typical narrow gap semiconductor (band gap magnitude is about 2.17eV), energy
Enough by most excited by visible light, and have that preparation cost is cheap, preparation method is green non-poisonous and on the earth reserves of copper rich
Rich, can the advantage such as preparation in a large number, therefore the photocatalysis field at visible ray has a wide range of applications potentiality.But, due at light
It is combined according to light induced electron on lower Red copper oxide and the quick of hole so that the photo-catalysis capability of Red copper oxide also needs to further
Promoting, photocatalytic degradation efficiency needs further to increase.Research shows, by Red copper oxide is combined with other materials, and can
Effectively to stop the compound of electronics and hole in Red copper oxide, it is greatly improved photocatalysis efficiency.Wang Hui et al. exists
Report on Chemistry of Materials 23 (2011) 4587-4598 and utilize gold nano grain to be combined with Red copper oxide
Prepare gold/Red copper oxide nucleocapsid structure to the method improving Red copper oxide photocatalysis efficiency；Luo Shenglian et al. exists
Report on Environmental Science&Technology 44 (2010) 7461-7646 and utilize titanium dioxide semiconductor
The method improving visible light catalytic efficiency after compound with Red copper oxide；Tang Junwang et al. is at ChemSusChem 7
(2014) report on 1086-1093 utilize redox graphene and Red copper oxide compound after improve photo catalytic reduction titanium dioxide
The method of carbon efficiencies.In many reports, utilize material with carbon element such as Graphene and CNT etc., be combined with Red copper oxide and improve
The advantages such as it is excellent that its photocatalysis performance has photocatalysis performance, and preparation method is simple, green non-pollution, have therefore suffered from increasingly
The concern of many scholars.
Carbon quantum dot (CQDs) is a kind of emerging carbon nanomaterial being smaller in size than 10nm, because of excellent optical property, good
Good biocompatibility, the advantage such as green non-poisonous and receive much attention.Recent studies indicate that, utilize carbon quantum dot and quasiconductor
After Material cladding, (such as, carbon quantum dot/titanium dioxide, carbon quantum dot/zinc oxide, carbon quantum dot/silver phosphate etc.) can be significantly
Improve the photocatalysis performance of quasiconductor.Its concrete mechanism is, under light illumination, quasiconductor can produce electronics and hole, on quasiconductor
Carbon quantum dot with the transmission of electric charge in reinforcing material, and hole that photoinduction on quasiconductor produces and electronics can be hindered to be combined,
Thus it is greatly enhanced the photocatalysis efficiency of material.But, the carbon quantum dot/semiconductor composite that presently, there are mostly is ultraviolet
Photocatalyst, therefore in the urgent need to providing a kind of simple low cost to prepare visible ray or even the method for near infrared light catalyst.
Summary of the invention
Because the drawbacks described above of prior art, it is an object of the invention to provide the most controlled a kind of carbon quantum dot-
The preparation method of Red copper oxide composite and the application as photocatalyst thereof.
For achieving the above object, the invention provides a kind of carbon quantum dot-Red copper oxide composite wood preparing morphology controllable
The method of material, without surfactant, using green gentle glucose as reducing agent, fabricated in situ carbon at a certain temperature
Quantum dot-Red copper oxide composite.
The preparation method of the carbon quantum dot of the present invention-Red copper oxide composite, comprises the following steps:
Step one, weigh a certain amount of carbon source and nitrogen source, soluble in water after carry out microwave heating reaction, the product obtained adds
After water-dispersible, first pass through centrifugation and remove insoluble matter, then remove unreacted little molecule reactant by dialysis, obtain
Carbon quantum dot solution；
Step 2, anhydrous cupric sulfate dispersed with stirring is obtained copper-bath in water, add a certain amount of described carbon amounts
Son point solution, mix homogeneously；
Step 3, solution heating in water bath step 2 obtained, be subsequently added sodium hydroxide solution, be immediately generated in solution
Precipitation；
Step 4, in the suspension that step 3 obtains add glucose solution, continue reaction 3 hours after, product is anti-
It is centrifuged again, washs repeatedly, obtain carbon quantum dot-Red copper oxide composite after drying.
Preferably, in step one, the reaction of described microwave heating uses household microwave oven to heat, the merit of described microwave oven
Rate is 600～1000W, and the time of described microwave heating reaction is 3～15 minutes.Described carbon source selected from citric acid, sodium citrate,
One or more in magnesium citrate, calcium citrate, potassium citrate；Described nitrogen source is urea；Described carbon source and the matter in described nitrogen source
Amount ratio is 0.5:1～2:1.The rotating speed of described centrifugation is 6000～10000 revs/min, and the time is 30 minutes；Described dialysis
Bag filter molecular cut off used is 500Da.
Preferably, in step 2, described stirring is mechanical agitation, and the concentration of described copper-bath is 0.5～1mol/L,
The volume of the described carbon quantum dot solution added is 0.5～30mL.
Preferably, in step 3, the temperature of described heating in water bath is 50～70 DEG C, the described sodium hydroxide solution of addition
Concentration is 0.5～2mol/L, and volume is 10mL, and for the most dropwise to drip.
Preferably, in step 4, the concentration of described glucose solution is 0.1～0.5mol/L, and volume is 10mL, and is fast
Inject fastly.Described centrifugal rotating speed is 3000～8000 revs/min, each 3～5 minutes；Described washing is for using ultra-pure water
With dehydrated alcohol alternately washing 3～5 times；Described being dried is 30～60 DEG C of vacuum drying 6～8 hours.
Compared with prior art, there is advantages that technique is simple, with low cost, practical, it is simple to
Commercial production in high volume；The composite morphology controllable obtained, photocatalysis efficiency is high, is utilizing solar energy and is curbing environmental pollution
Aspect has good application prospect.Such as, the composite that the present invention obtains can be used as photocatalyst, for degradating organic dye
And other organic pollutions.
Below with reference to accompanying drawing, the technique effect of design, instantiation and the generation of the present invention is described further, with
It is fully understood from the present invention.There is provided these descriptive purposes to be only that and help explain the present invention, should not be taken to limit the present invention
The scope of claim.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope of the carbon quantum dot-Red copper oxide composite of a preferred embodiment of the present invention
Photo；
Fig. 2 is the transmission electron microscope of the carbon quantum dot-Red copper oxide composite of a preferred embodiment of the present invention
Photo；
Fig. 3 is the X-ray diffractogram of the carbon quantum dot-Red copper oxide composite of a preferred embodiment of the present invention；
Fig. 4 is the UV-Vis DRS of the carbon quantum dot-Red copper oxide composite of a preferred embodiment of the present invention
Figure；
Fig. 5 is the carbon quantum dot-Red copper oxide composite photo-catalytic degradation of methyl-orange of a preferred embodiment of the present invention
Degradation curve figure.
Detailed description of the invention
Elaborating embodiments of the invention below in conjunction with the accompanying drawings, the present embodiment is being front with technical solution of the present invention
Put and implement, give detailed embodiment and concrete operating process, but under protection scope of the present invention is not limited to
The embodiment stated.
Embodiment 1
Step one, is dissolved in 3g citric acid and 3g urea in 10mL ultra-pure water under ultrasonic, is placed in the household microwave oven of 800W
Middle heating 5min, Temperature fall；In the said goods, add ultra-pure water, after ultrasonic disperse, be centrifuged 30 minutes with 8000 revs/min
After, supernatant is loaded in the bag filter of 500Da and dialyse 2-3 days, obtain carbon quantum dot solution；
Step 2, is dissolved in 0.3g anhydrous cupric sulfate in 50mL ultra-pure water under tool stirs, adds the above-mentioned carbon quantum of 10mL
Point solution, stirs；
Step 3, is warming up to 60 DEG C by above-mentioned solution water-bath, dropwise drips the sodium hydroxide solution of 10mL 1mol/L；
Step 4, above-mentioned be added dropwise to complete after, the glucose injecting 10mL 0.3mol/L in the suspension obtained immediately is molten
Liquid, continues mechanical agitation 3 hours；The said goods is cooled to room temperature, centrifugal 10 minutes with 3000 revs/min, continuations water with
After ethanol eccentric cleaning successively, it is placed in 60 DEG C of vacuum drying ovens and is dried 6 hours, obtain carbon quantum dot-Red copper oxide composite wood
Material.
By the electron scanning micrograph of Fig. 1 and the transmission electron microscope photo of Fig. 2 it can be seen that the carbon of the present invention
Quantum dot-Red copper oxide composite is the cube pattern of size uniformity.From the X-ray diffractogram of Fig. 3, the present invention obtains
To carbon quantum dot-Red copper oxide composite in, the degree of crystallinity of Red copper oxide is the highest, does not has impurity peaks, thus purity is the most very
High.By the UV-vis DRS figure of Fig. 4 it can be seen that relative to pure Red copper oxide material, the carbon quantum dot-oxygen of the present invention
Changing cuprous composite in the visible region of 460～800nm, absorbance is apparently higher than pure Red copper oxide material；Especially exist
The near infrared region of 780～800nm, still shows stronger absorption, and this is estimable.
The carbon quantum dot of embodiment 1-Red copper oxide composite is used for the research of the visible light photocatalytic degradation to methyl orange.
The composite material powder 50mg that embodiment 1 obtained adds in the 10mg/mL methyl orange solution of 50mL, lucifuge stir 20 minutes with
Reach adsorption equilibrium, then carry out radiation of visible light, sampling in every 10 minutes once, observation 60 minutes altogether, its result such as Fig. 5 institute
Show.Obviously, the photocatalytic degradation of methyl orange is shown by the carbon quantum dot of the present invention-Red copper oxide composite under visible light
Extremely strong activity, the degradation rate of 60 minutes is up to about 90%；Relative, the pure Red copper oxide material degradation rate of 60 minutes
It is only about 5%, it is sufficient to the display present invention creates significant Advantageous Effects by compound to carbon quantum dot and Red copper oxide.
The preparation method of the present invention, can be by regulating carbon quantum dot-oxidation Asia that the consumption of carbon quantum dot controls to obtain
The size of carbon/carbon-copper composite material and pattern.This preparation method technique is simple, and practical, the carbon quantum dot-Red copper oxide of preparation is multiple
The size of condensation material and morphology controllable, photocatalysis efficiency is high, has preferable application prospect in terms of environmental improvement.
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 technology in the art
Personnel are available by logical analysis, reasoning, or a limited experiment the most on the basis of existing technology
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. the preparation method of carbon quantum dot-Red copper oxide composite, it is characterised in that described preparation method includes following
Step:
Step one, weigh a certain amount of carbon source and nitrogen source, soluble in water after carry out microwave heating reaction, the product obtained adds moisture
After Saning, first pass through centrifugation and remove insoluble matter, then remove unreacted little molecule reactant by dialysis, obtain carbon amounts
Son point solution；
Step 2, anhydrous cupric sulfate dispersed with stirring is obtained copper-bath in water, add a certain amount of described carbon quantum dot
Solution, mix homogeneously；
Step 3, solution heating in water bath step 2 obtained, be subsequently added sodium hydroxide solution；
Step 4, in the suspension that step 3 obtains add glucose solution, continue reaction 3 hours after, by product repeatedly from
The heart, washing, obtain described carbon quantum dot-Red copper oxide composite after drying.
2. the preparation method of carbon quantum dot-Red copper oxide composite as claimed in claim 1, wherein micro-described in step one
Wave heating reaction uses household microwave oven to heat, and the power of described microwave oven is 600～1000W, and described microwave heating is anti-
The time answered is 3～15 minutes.
3. the preparation method of carbon quantum dot-Red copper oxide composite as claimed in claim 1, wherein described in step one
One or more in citric acid, sodium citrate, magnesium citrate, calcium citrate, potassium citrate of carbon source；Described nitrogen source is
Urea；Described carbon source is 0.5:1～2:1 with the mass ratio in described nitrogen source.
4. the preparation method of carbon quantum dot-Red copper oxide composite as claimed in claim 1, wherein described in step one from
The rotating speed that the heart separates is 6000～10000 revs/min, and the time is 30 minutes；Bag filter molecular cut off used by described dialysis
For 500Da.
5. the preparation method of carbon quantum dot-Red copper oxide composite as claimed in claim 1, wherein sulfur described in step 2
The concentration of acid copper solution is 0.5～1mol/L, and the volume of the described carbon quantum dot solution of addition is 0.5～30mL.
6. the preparation method of carbon quantum dot-Red copper oxide composite as claimed in claim 1, wherein water described in step 3
The temperature of bath heating is 50～70 DEG C, and the concentration of the described sodium hydroxide solution of addition is 0.5～2mol/L, and volume is 10mL,
And for the most dropwise to drip.
7. the preparation method of carbon quantum dot-Red copper oxide composite as claimed in claim 1, wherein Portugal described in step 4
The concentration of grape sugar juice is 0.1～0.5mol/L, and volume is 10mL, and for inject rapidly.
8. the preparation method of carbon quantum dot-Red copper oxide composite as claimed in claim 1, wherein described in step 4 from
The rotating speed of the heart is 3000～8000 revs/min, each 3～5 minutes；Described washing is alternately washed for using ultra-pure water and dehydrated alcohol
Wash 3～5 times；Described being dried is 30～60 DEG C of vacuum drying 6～8 hours.
9. the carbon quantum dot obtained by preparation method according to any one of claim 1-8-Red copper oxide composite is as light
The application of catalyst.
10. carbon quantum dot-Red copper oxide composite as claimed in claim 9 is as the application of photocatalyst, wherein said
Photocatalyst is used for degradating organic dye, and described organic dyestuff is methyl orange.
Priority Applications (1)
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| CN107511151A (en) * | 2017-09-08 | 2017-12-26 | 云南大学 | A kind of protein hydrolyst carbon quantum dot/cuprous oxide compound（CQDs/Cu2O）And its application |
| CN108187722A (en) * | 2018-01-13 | 2018-06-22 | 常州大学 | A kind of preparation method of nitrogen-doped carbon quantum dot/cuprous oxide composite photo-catalyst |
| CN108816265A (en) * | 2018-06-08 | 2018-11-16 | 湖南大学 | Pucherite/nitrogen-doped carbon quantum dot/double Z shaped photochemical catalyst of cuprous oxide and its preparation method and application |
| CN109939679A (en) * | 2019-04-12 | 2019-06-28 | 齐鲁工业大学 | A kind of atom level dispersion copper CO2Convert co-catalyst and its preparation method and application |
| CN110358534A (en) * | 2019-06-28 | 2019-10-22 | 昆明理工大学 | A kind of preparation method that carbon quantum dot combined oxidation is cuprous |
| CN110508248A (en) * | 2019-08-30 | 2019-11-29 | 四川神州奥特农业科技有限公司 | A kind of iodine adsorbent material and preparation method thereof |
| CN111229215A (en) * | 2020-03-09 | 2020-06-05 | 华东理工大学 | Metal high-dispersion supported catalyst based on carbon quantum dot induction and preparation method and application thereof |
| CN111607387A (en) * | 2020-01-03 | 2020-09-01 | 华南师范大学 | Photocatalytic microsphere motor based on carbon dots and preparation method and application thereof |
| CN112536034A (en) * | 2020-11-22 | 2021-03-23 | 重庆交通大学 | CQDS/CuO@Cu2Preparation method of O-micron balls |
| CN112536022A (en) * | 2020-11-22 | 2021-03-23 | 重庆交通大学 | CQDS/Cu2Preparation method of S nanoflower |
| CN113413921A (en) * | 2021-07-30 | 2021-09-21 | 陕西科技大学 | ZIF-8 type composite photocatalyst and preparation method thereof |
| CN114768815A (en) * | 2022-04-28 | 2022-07-22 | 华南农业大学 | Rare earth-iron-carbon quantum dot composite material and preparation method and application thereof |
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| CN107511151B (en) * | 2017-09-08 | 2020-06-23 | 云南大学 | Carbon quantum dot/cuprous oxide compound (CQDs/Cu) as protein hydrolysis catalyst2O) and use thereof |
| CN108187722B (en) * | 2018-01-13 | 2020-11-10 | 常州大学 | Preparation method of nitrogen-doped carbon quantum dot/cuprous oxide composite photocatalyst |
| CN108187722A (en) * | 2018-01-13 | 2018-06-22 | 常州大学 | A kind of preparation method of nitrogen-doped carbon quantum dot/cuprous oxide composite photo-catalyst |
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| CN110358534A (en) * | 2019-06-28 | 2019-10-22 | 昆明理工大学 | A kind of preparation method that carbon quantum dot combined oxidation is cuprous |
| CN110508248A (en) * | 2019-08-30 | 2019-11-29 | 四川神州奥特农业科技有限公司 | A kind of iodine adsorbent material and preparation method thereof |
| CN111607387A (en) * | 2020-01-03 | 2020-09-01 | 华南师范大学 | Photocatalytic microsphere motor based on carbon dots and preparation method and application thereof |
| CN111607387B (en) * | 2020-01-03 | 2023-07-25 | 华南师范大学 | Photocatalytic microsphere motor based on carbon dots and preparation method and application thereof |
| CN111229215A (en) * | 2020-03-09 | 2020-06-05 | 华东理工大学 | Metal high-dispersion supported catalyst based on carbon quantum dot induction and preparation method and application thereof |
| CN112536034A (en) * | 2020-11-22 | 2021-03-23 | 重庆交通大学 | CQDS/CuO@Cu2Preparation method of O-micron balls |
| CN112536022A (en) * | 2020-11-22 | 2021-03-23 | 重庆交通大学 | CQDS/Cu2Preparation method of S nanoflower |
| CN113413921A (en) * | 2021-07-30 | 2021-09-21 | 陕西科技大学 | ZIF-8 type composite photocatalyst and preparation method thereof |
| CN114768815A (en) * | 2022-04-28 | 2022-07-22 | 华南农业大学 | Rare earth-iron-carbon quantum dot composite material and preparation method and application thereof |
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