CN104117375A - Preparation method of synthesized carbon quantum dot-carbon nitrogen macromolecule composite infrared light catalyst - Google Patents
Preparation method of synthesized carbon quantum dot-carbon nitrogen macromolecule composite infrared light catalyst Download PDFInfo
- Publication number
- CN104117375A CN104117375A CN201410274323.XA CN201410274323A CN104117375A CN 104117375 A CN104117375 A CN 104117375A CN 201410274323 A CN201410274323 A CN 201410274323A CN 104117375 A CN104117375 A CN 104117375A
- Authority
- CN
- China
- Prior art keywords
- quantum dot
- carbon quantum
- carbon
- infrared light
- melamine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 152
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 143
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 76
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 229920002521 macromolecule Polymers 0.000 title claims abstract description 63
- 239000003054 catalyst Substances 0.000 title claims abstract description 54
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 72
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 50
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 48
- 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 abstract description 47
- 229940012189 methyl orange Drugs 0.000 claims abstract description 47
- 239000000243 solution Substances 0.000 claims abstract description 44
- 239000007864 aqueous solution Substances 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 24
- 230000000593 degrading effect Effects 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 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 18
- 239000008103 glucose Substances 0.000 claims abstract description 18
- 239000011941 photocatalyst Substances 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 238000004020 luminiscence type Methods 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 42
- 150000001875 compounds Chemical class 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000008367 deionised water Substances 0.000 claims description 14
- 229910021641 deionized water Inorganic materials 0.000 claims description 14
- 230000001678 irradiating effect Effects 0.000 claims 1
- 230000001699 photocatalysis Effects 0.000 abstract description 9
- 238000007146 photocatalysis Methods 0.000 abstract description 8
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000001035 drying Methods 0.000 abstract 2
- 238000001704 evaporation Methods 0.000 abstract 2
- 230000008020 evaporation Effects 0.000 abstract 2
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 description 17
- 238000006731 degradation reaction Methods 0.000 description 17
- 238000004220 aggregation Methods 0.000 description 16
- 230000002776 aggregation Effects 0.000 description 16
- 238000004506 ultrasonic cleaning Methods 0.000 description 13
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 10
- 230000007423 decrease Effects 0.000 description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 238000006555 catalytic reaction Methods 0.000 description 5
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 description 5
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 description 5
- 239000000356 contaminant Substances 0.000 description 4
- 229940112669 cuprous oxide Drugs 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052691 Erbium Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- QTERRLQSXYDXAH-UHFFFAOYSA-N [C].N1=C(N)N=C(N)N=C1N Chemical class [C].N1=C(N)N=C(N)N=C1N QTERRLQSXYDXAH-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 1
- 230000004298 light response Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002096 quantum dot Substances 0.000 description 1
- 238000001055 reflectance spectroscopy Methods 0.000 description 1
- 238000000985 reflectance spectrum Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Catalysts (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a preparation method of a synthesized carbon quantum dot-carbon nitrogen macromolecule composite infrared light catalyst, belonging to the field of photocatalysis. The preparation method comprises the following steps: (1) synthesizing a carbon quantum dot with an up-conversion luminescence property by glucose; (2) adding a certain amount of carbon quantum dot solution into an aqueous solution of melamine, stirring so as to mix uniformly, and then drying by evaporation at 80 DEG C; and (3) heating and drying the obtained sample by evaporation in the air atmosphere at 450 DEG C for 2 hours, thereby obtaining the carbon quantum dot-carbon nitrogen macromolecule composite photocatalyst. The prepared carbon quantum dot-carbon nitrogen macromolecule composite photocatalyst degrades methyl orange under the irradiation of infrared light, and the result shows that the catalyst can effectively degrade methyl orange under infrared light; the infrared light accounts for about 53% of solar energy, and is not effectively used for degrading pollutants in the photocatalysis field so far. The synthesized material can effectively degrade pollutants by utilizing infrared light, is low in reaction cost, and has a certain application prospect.
Description
Technical field
The invention belongs to photocatalysis field, be specifically related to the preparation method of the compound infrared light catalyst of a kind of synthetic carbon quantum dot-carbon nitrogen macromolecule, the be combined with each other novel photocatalyst of the synthetic dyestuff contaminant of can degrading of carbon quantum dot and carbon nitrogen macromolecule under infrared light.
Background technology
Photocatalysis is widely used in environmental pollution improvement in recent years, and current photochemical catalyst can only utilize ultraviolet light and visible ray mostly, can not utilize the infrared light that accounts for solar energy 53%.Therefore be necessary to develop the photochemical catalyst of energy degradation of contaminant under infrared light.Rare earth material is common up-conversion luminescent material, near infrared light and infrared light can be converted into visible ray or ultraviolet light, extensively and catalysis material synthetic photochemical catalyst (the Zhijie Zhang and Wenzhong Wang that can utilize infrared light that is combined with each other, Infrared-light-induced photocatalysis on BiErWO6 (photochemical catalyst of the infrared optical response based on BiErWO6), Dalton Trans., 2013,42,12072 – 12074).Yet in rare earth up-conversion, contain the metals such as bismuth, erbium, in use procedure, have the problem of metal loss, can be to environment.Kang Zhenhui seminar of University Of Suzhou finds a carbon containing, the carbon quanta point material of the elements such as nitrogen also can absorb infrared light emission ultraviolet light or visible ray, can be used as nanoscale light source is titanium dioxide under infrared light condition, the photochemical catalysts such as cuprous oxide provide visible ray or ultraviolet degradation pollutant (Haitao Li, Xiaodie He, Zhenhui Kang, Hui Huang, Yang Liu, Jinglin Liu, Suoyuan Lian, Chi Him A.Tsang, Xiaobao Yang, and Shuit-Tong Lee, Water-Soluble Fluorescent Carbon Quantum Dots and Photocatalyst Design (water-soluble fluorescent carbon quantum dot and photocatalysis design), Angew.Chem.Int.Ed.2010, 49, 4430-4434, Haitao Li, Ruihua Liu, Yang Liu, Hui Huang, Hang Yu, Hai Ming, Suoyuan Lian, Shuit-Tong Leeab and Zhenhui Kang, Carbon quantum dots/Cu2O composites with protruding nanostructures and their highly efficient (near) infrared photocatalytic behavior (carbon quantum dot/cuprous oxide composite nanostructure and (closely) infrared light catalysis behavior efficiently), J.Mater.Chem., 2012, 22, 17470 – 17475), related work has been applied for national patent: the method for making of carbon quantum dot and apply the method that this carbon quantum dot is prepared photochemical catalyst, national patent number is CN102127431A.There is hydroxyl on carbon quantum dot surface, a lot of hydrophilic radical (Haitao Li such as carbonyl, Zhenhui Kang, Yang Liu and Shuit-Tong Lee, Carbon nanodots:synthesis, properties and applications (carbon quantum dot: synthetic, character and application), J.Mater.Chem., 2012, 22, 24230 – 24253), there are a lot of hydroxyls on titanium dioxide and cuprous oxide surface, also be hydrophilic (Keita Takahashi and Hiroharu Yui, Analysis of Surface OH Groups on TiO2Single Crystal with Polarization Modulation Infrared External Reflection Spectroscopy (oh group on the infrared external reflectance spectrum analysis titanium dioxide single crystalline of polarization modulation surface), J.Phys.Chem.C2009, 113, 20322 – 20327, Xingyi Deng, Tirma Herranz, Christoph Weis, Hendrik Bluhm, and Miquel Salmeron, Adsorption of Water on Cu2O and Al2O3Thin Films (water is in the absorption of cuprous oxide and alundum (Al2O3) film surface), J.Phys.Chem.C2008,112,9668 – 9672), therefore only by under normal temperature, stir, carbon quantum dot just can well be combined with each other with these metal oxide photocatalysts.Yet the surface of not every catalysis material is all hydrophilic, as the carbon nitrogen high-molecular optical catalyst extensively receiving publicity recently, it is containing metal not, avoided traditional metal oxidation photocatalyst metal loss problem in use, and effectively decomposition water goes out hydrogen and degraded aromatics pollutant (Yong Wang under visible ray, Xinchen Wang, and Markus Antonietti, (macromolecule graphite-phase carbon nitrogen is as heterogeneous organic photochemical catalyst: from photochemistry for Polymeric Graphitic Carbon Nitride as a Heterogenous Organocatalyst:From Photochemistry to Multipurpose Catalysis to Sustainable Chemistry, catalysis is to sustainable chemistry), Angew.Chem.Int.Ed.2012, 51, 68-89, Yong Guo, ab Sheng Chu, abc Shicheng Yan, ab Ying Wang*abc and Zhigang Zou, Developing a polymeric semiconductor photocatalyst with visible light Response (developing visible light-responded semiconducting polymer's photochemical catalyst), Chem.Commun., 2010,46,7325-7327).But it is hydrophobic material, be difficult to by the method for stirring at normal temperature, carbon quantum dot and carbon nitrogen high-molecular optical catalyst to be combined with each other, syntheticly can utilize the degrade non-metal optical catalyst of fragrant pollutant of infrared light.
Summary of the invention
1. the technical problem that invention will solve
I by with carbon nitrogen macromolecule presoma melamine, carbon nitrogen macromolecule being coated to the then way of high-temperature process, synthesize New Type of Carbon quantum dot-carbon nitrogen macromolecule composite photo-catalyst that can utilize infrared light degradation of contaminant in order to solve the problems of the technologies described above.The method has overcome carbon quantum dot and has been difficult for being compounded to form with hydrophobic carbon nitrogen high-molecular optical catalyst at normal temperatures the shortcoming of the composite photo-catalyst that can utilize infrared light, and take glucose and melamine as raw material, cost is low, only need the instruments such as Muffle furnace, and in heating process, do not need carrier gas, technique is simple, has good practical application potentiality.
2. technical scheme
Inventive principle: carbon quantum dot is a kind of fluorescent material, can absorb infrared light emission visible ray (up-conversion luminescence), there are a lot of hydrophilic functional groups on surface, carbon nitrogen macromolecule is metal-free organic semiconductor photochemical catalyst, organic pollution in degradation water, is a hydrophobic material effectively.The two can not well form compound by agitating mode at normal temperatures.In the present invention, we have adopted stepped approach: first synthetic carbon quantum dot, then carbon quantum dot is dispersed in the aqueous solution of melamine and stirs evaporate to dryness, finally the mixture of evaporate to dryness gained is just obtained to carbon quantum dot-carbon nitrogen macromolecule composite photo-catalyst of infrared optical response 450 ℃ of heating for 2 hours.
A preparation method for the compound infrared light catalyst of synthetic carbon quantum dot-carbon nitrogen macromolecule, the steps include:
(1) 8-9g glucose is placed in to the NaOH solution that 100ml concentration is 0.1-0.2mol/L, and processes half an hour with ultrasonic wave, obtain orange carbon quantum dot solution.
(2) above-mentioned carbon quantum dot solution 8-9ml is joined in the melamine aqueous solution of 40ml, the ratio that the melamine aqueous solution is dissolved in 40ml deionized water according to 1g melamine configures, and stirs and it is mixed in 2 hours, then evaporate to dryness at 80 ℃;
(3) the evaporate to dryness sample in step (2) is put into Muffle furnace, under 450 ℃ of air atmospheres, roasting is 2 hours, makes the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule.
The 4mg/L methyl orange of degrading under infrared lamp irradiates with the compound infrared light catalyst of prepared carbon quantum dot-carbon nitrogen macromolecule 4 hours, result shows that 90% methyl orange can be degraded, so this material can effectively utilize degradation of contaminant under infrared light.
In described step (1), use KQ-00KED type high power numerical control ultrasonic cleaning machine (Kunshan ultrasonic instrument Co., Ltd).
What in described step (4), use is the medical infrared lamp in 100 watts of Philips.
3. beneficial effect
The present invention proposes the preparation method of the compound infrared light catalyst of a kind of synthetic carbon quantum dot-carbon nitrogen macromolecule, first passage two-step method of the present invention: (1) is first coated carbon quantum dot with the high molecular presoma-melamine of carbon nitrogen, (2) compound of this melamine carbon coated quantum dot of high-temperature process, carbon quantum dot-carbon nitrogen macromolecule the composite photocatalyst material that has successfully synthesized the direction pollutant of can degrading under infrared light, improved the utilization ratio to light, this research contributes to further to promote photocatalysis technology in the application in environmental pollution improvement field.Its beneficial effect is mainly reflected in:
(1) the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule can carry out photocatalysis under infrared light, effectively utilizes the sunshine energy, and not containing rare earth metal or heavy metal, has avoided metal loss.
(2) in this preparation method, hydrophobic carbon nitrogen macromolecule and hydrophilic carbon quantum dot are combined with each other, have improved the utilization ratio to light.
(3) to take glucose and melamine be raw material to this preparation method, and cost is low, only needs the instruments such as Muffle furnace, and does not need carrier gas in heating process, and technique is simple, has good practical application potentiality.
Accompanying drawing explanation
The electromicroscopic photograph of Fig. 1 carbon quantum dot, shows that the particle diameter of synthesized carbon quantum dot is in 5nm left and right;
The fluorescence photo of Fig. 2 carbon quantum dot, shows that the carbon quantum dot of synthesized can absorb infrared light emission visible ray;
The high molecular electromicroscopic photograph of Fig. 3 carbon quantum dot-carbon nitrogen, the black splotch in figure in white circle circle segment is partly the aggregation of carbon quantum dot;
The high molecular fluorescence result of Fig. 4 carbon quantum dot-carbon nitrogen, shows that this composite also can absorb infrared light emission visible ray;
Fig. 5 quantum dot-carbon nitrogen macromolecule decline to be separated the result of methyl orange at infrared light, show this composite methyl orange of can effectively degrading under infrared light;
The high molecular electromicroscopic photograph of Fig. 6 quantum dot-carbon nitrogen, the black splotch in white circle circle segment is partly the aggregation of carbon quantum dot;
The high molecular electromicroscopic photograph of Fig. 7 quantum dot-carbon nitrogen, the black splotch in white circle circle segment is partly the aggregation of carbon quantum dot;
The high molecular electromicroscopic photograph of Fig. 8 quantum dot-carbon nitrogen, the black splotch in white circle circle segment is partly the aggregation of carbon quantum dot;
The high molecular electromicroscopic photograph of Fig. 9 quantum dot-carbon nitrogen, the black splotch in white circle circle segment is partly the aggregation of carbon quantum dot;
The high molecular electromicroscopic photograph of Figure 10 quantum dot-carbon nitrogen, the black splotch in white circle circle segment is partly the aggregation of carbon quantum dot;
The high molecular electromicroscopic photograph of Figure 11 quantum dot-carbon nitrogen, the black splotch in white circle circle segment is partly the aggregation of carbon quantum dot;
The high molecular electromicroscopic photograph of Figure 12 quantum dot-carbon nitrogen, the black splotch in white circle circle segment is partly the aggregation of carbon quantum dot;
Figure 13 quantum dot-carbon nitrogen macromolecule declines and separates the result of methyl orange at infrared light, shows that this composite can decline and separate methyl orange at infrared light;
Figure 14 quantum dot-carbon nitrogen macromolecule declines and separates the result of methyl orange at infrared light, shows that this composite can decline and separate methyl orange at infrared light;
Figure 15 quantum dot-carbon nitrogen macromolecule declines and separates the result of methyl orange at infrared light, shows that this composite can decline and separate methyl orange at infrared light;
Figure 16 quantum dot-carbon nitrogen macromolecule declines and separates the result of methyl orange at infrared light, shows that this composite can decline and separate methyl orange at infrared light.
The specific embodiment
By example, further illustrate the present invention below.
Embodiment 1:
8g glucose is placed in to the NaOH solution that the concentration of 100ml is 0.1mol/L, and processes (KQ-00KED type high power numerical control ultrasonic cleaning machine) half an hour with ultrasonic wave, obtain orange carbon quantum dot solution; Above-mentioned carbon quantum dot solution 8ml is joined in the aqueous solution of melamine of 40ml, the ratio that the melamine aqueous solution is dissolved in 40ml deionized water according to 1g melamine configures, and stirs and it is mixed in 2 hours, then evaporate to dryness at 80 ℃; Evaporate to dryness sample is put into Muffle furnace, and at 450 ℃, roasting is 2 hours, makes the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule.The 4mg/L methyl orange of degrading under infrared lamp irradiates with the compound infrared light catalyst of prepared carbon quantum dot-carbon nitrogen macromolecule 4 hours, degradation rate is 90%, methyl orange shows can degrade under this material infrared light.
Fig. 1 is carbon quantum dot electromicroscopic photograph, shows that carbon quantum point grain diameter only has 5nm left and right, and Fig. 2 is the fluorescence result of carbon quantum dot, and it can launch the visible ray of 440-540nm under 800-900nm irradiates as seen.Fig. 3 is the high molecular electromicroscopic photograph of carbon quantum dot-carbon nitrogen, in figure white circle around part in black splotch be partly the aggregation of carbon quantum dot, Fig. 4 is the high molecular fluorescence result of carbon quantum dot-carbon nitrogen, shows that this composite also can absorb infrared light emission visible ray.To be carbon quantum dot-carbon nitrogen macromolecule decline and separate the result of methyl orange at infrared light Fig. 5, as seen this composite methyl orange of can effectively degrading under infrared light.
Embodiment 2:
9g glucose is placed in to the NaOH solution that the concentration of 100ml is 0.1mol/L, and processes (KQ-00KED type high power numerical control ultrasonic cleaning machine) half an hour with ultrasonic wave, obtain orange carbon quantum dot solution; Above-mentioned carbon quantum dot solution 8ml is joined in the aqueous solution of melamine of 40ml, the ratio that the melamine aqueous solution is dissolved in 40ml deionized water according to 1g melamine configures, and stirs and it is mixed in 2 hours, then evaporate to dryness at 80 ℃; Evaporate to dryness sample is put into Muffle furnace, and at 450 ℃, roasting is 2 hours, makes the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule.The 4mg/L methyl orange of degrading under infrared lamp irradiates with the compound infrared light catalyst of prepared carbon quantum dot-carbon nitrogen macromolecule 4 hours, degradation rate is 90%, methyl orange shows can degrade under this material infrared light.
Fig. 6 is the high molecular electromicroscopic photograph of carbon quantum dot-carbon nitrogen, and the black splotch in figure in white circle circle segment is partly the aggregation of carbon quantum dot.
Embodiment 3:
8g glucose is placed in to the NaOH solution that the concentration of 100ml is 0.2mol/L, and processes (KQ-00KED type high power numerical control ultrasonic cleaning machine) half an hour with ultrasonic wave, obtain orange carbon quantum dot solution; Above-mentioned carbon quantum dot solution 8ml is joined in the aqueous solution of melamine of 40ml, the ratio that the melamine aqueous solution is dissolved in 40ml deionized water according to 1g melamine configures, and stirs and it is mixed in 2 hours, then evaporate to dryness at 80 ℃; Evaporate to dryness sample is put into Muffle furnace, and at 450 ℃, roasting is 2 hours, makes the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule.The 4mg/L methyl orange of degrading under infrared lamp irradiates with the compound infrared light catalyst of prepared carbon quantum dot-carbon nitrogen macromolecule 4 hours, degradation rate is 90%, methyl orange shows can degrade under this material infrared light.
Fig. 7 is the high molecular electromicroscopic photograph of carbon quantum dot-carbon nitrogen, and the black splotch in figure in white circle circle segment is partly the aggregation of carbon quantum dot.
Embodiment 4:
9g glucose is placed in to the NaOH solution that the concentration of 100ml is 0.2mol/L, and processes (KQ-00KED type high power numerical control ultrasonic cleaning machine) half an hour with ultrasonic wave, obtain orange carbon quantum dot solution; Above-mentioned carbon quantum dot solution 8ml is joined in the aqueous solution of melamine of 40ml, the ratio that the melamine aqueous solution is dissolved in 40ml deionized water according to 1g melamine configures, and stirs and it is mixed in 2 hours, then evaporate to dryness at 80 ℃; Evaporate to dryness sample is put into Muffle furnace, and at 450 ℃, roasting is 2 hours, makes the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule.The 4mg/L methyl orange of degrading under infrared lamp irradiates with the compound infrared light catalyst of prepared carbon quantum dot-carbon nitrogen macromolecule 4 hours, degradation rate is 90%, methyl orange shows can degrade under this material infrared light.
Fig. 8 is the high molecular electromicroscopic photograph of carbon quantum dot-carbon nitrogen, and the black splotch in figure in white circle circle segment is partly the aggregation of carbon quantum dot.
Embodiment 5:
8g glucose is placed in to the NaOH solution that the concentration of 100ml is 0.1mol/L, and processes (KQ-00KED type high power numerical control ultrasonic cleaning machine) half an hour with ultrasonic wave, obtain orange carbon quantum dot solution; Above-mentioned carbon quantum dot solution 9ml is joined in the aqueous solution of melamine of 40ml, the ratio that the melamine aqueous solution is dissolved in 40ml deionized water according to 1g melamine configures, and stirs and it is mixed in 2 hours, then evaporate to dryness at 80 ℃; Evaporate to dryness sample is put into Muffle furnace, and at 450 ℃, roasting is 2 hours, makes the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule.The 4mg/L methyl orange of degrading under infrared lamp irradiates with the compound infrared light catalyst of prepared carbon quantum dot-carbon nitrogen macromolecule 4 hours, degradation rate is 90%, methyl orange shows can degrade under this material infrared light.
Fig. 9 is the high molecular electromicroscopic photograph of carbon quantum dot-carbon nitrogen, and the black splotch in figure in white circle circle segment is partly the aggregation of carbon quantum dot.
Embodiment 6:
9g glucose is placed in to the NaOH solution that the concentration of 100ml is 0.1mol/L, and processes (KQ-00KED type high power numerical control ultrasonic cleaning machine) half an hour with ultrasonic wave, obtain orange carbon quantum dot solution; Above-mentioned carbon quantum dot solution 9ml is joined in the aqueous solution of melamine of 40ml, the ratio that the melamine aqueous solution is dissolved in 40ml deionized water according to 1g melamine configures, and stirs and it is mixed in 2 hours, then evaporate to dryness at 80 ℃; Evaporate to dryness sample is put into Muffle furnace, and at 450 ℃, roasting is 2 hours, makes the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule.The 4mg/L methyl orange of degrading under infrared lamp irradiates with the compound infrared light catalyst of prepared carbon quantum dot-carbon nitrogen macromolecule 4 hours, degradation rate is 90%, methyl orange shows can degrade under this material infrared light.
Figure 10 is the high molecular electromicroscopic photograph of carbon quantum dot-carbon nitrogen, and the black splotch in figure in white circle circle segment is partly the aggregation of carbon quantum dot.
Embodiment 7:
8g glucose is placed in to the NaOH solution that the concentration of 100ml is 0.2mol/L, and processes (KQ-00KED type high power numerical control ultrasonic cleaning machine) half an hour with ultrasonic wave, obtain orange carbon quantum dot solution; Above-mentioned carbon quantum dot solution 9ml is joined in the aqueous solution of melamine of 40ml, the ratio that the melamine aqueous solution is dissolved in 40ml deionized water according to 1g melamine configures, and stirs and it is mixed in 2 hours, then evaporate to dryness at 80 ℃; Evaporate to dryness sample is put into Muffle furnace, and at 450 ℃, roasting is 2 hours, makes the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule.The 4mg/L methyl orange of degrading under infrared lamp irradiates with the compound infrared light catalyst of prepared carbon quantum dot-carbon nitrogen macromolecule 4 hours, degradation rate is 90%, methyl orange shows can degrade under this material infrared light.
Figure 11 is the high molecular electromicroscopic photograph of carbon quantum dot-carbon nitrogen, and the black splotch in figure in white circle circle segment is partly the aggregation of carbon quantum dot.
Embodiment 8:
9g glucose is placed in to the NaOH solution that the concentration of 100ml is 0.2mol/L, and processes (KQ-00KED type high power numerical control ultrasonic cleaning machine) half an hour with ultrasonic wave, obtain orange carbon quantum dot solution; Above-mentioned carbon quantum dot solution 9ml is joined in the aqueous solution of melamine of 40ml, the ratio that the melamine aqueous solution is dissolved in 40ml deionized water according to 1g melamine configures, and stirs and it is mixed in 2 hours, then evaporate to dryness at 80 ℃; Evaporate to dryness sample is put into Muffle furnace, and at 450 ℃, roasting is two hours, makes the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule.The 4mg/L methyl orange of degrading under infrared lamp irradiates with the compound infrared light catalyst of prepared carbon quantum dot-carbon nitrogen macromolecule 4 hours, degradation rate is 90%, methyl orange shows can degrade under this material infrared light.
Figure 12 is the high molecular electromicroscopic photograph of carbon quantum dot-carbon nitrogen, and the black splotch in figure in white circle circle segment is partly the aggregation of carbon quantum dot.
Embodiment 9:
8g glucose is placed in to the NaOH solution that the concentration of 100ml is 0.1mol/L, and processes (KQ-00KED type high power numerical control ultrasonic cleaning machine) half an hour with ultrasonic wave, obtain orange carbon quantum dot solution; Above-mentioned carbon quantum dot solution 9ml is joined in the aqueous solution of melamine of 40ml, the ratio that the melamine aqueous solution is dissolved in 40ml deionized water according to 1g melamine configures, and stirs and it is mixed in 2 hours, then evaporate to dryness at 80 ℃; Evaporate to dryness sample is put into Muffle furnace, and at 450 ℃, roasting is 2 hours, makes the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule.The 4mg/L methyl orange of degrading under infrared lamp irradiates with the compound infrared light catalyst of prepared carbon quantum dot-carbon nitrogen macromolecule 3 hours, degradation rate is 80%, methyl orange shows also can degrade under this material infrared light.
Figure 13 is the result that methyl orange is separated in the decline of carbon quantum dot-carbon nitrogen macromolecule infrared light.
Embodiment 10:
9g glucose is placed in to the NaOH solution that the concentration of 100ml is 0.1mol/L, and processes (KQ-00KED type high power numerical control ultrasonic cleaning machine) half an hour with ultrasonic wave, obtain orange carbon quantum dot solution; Above-mentioned carbon quantum dot solution 9ml is joined in the aqueous solution of melamine of 40ml, the ratio that the melamine aqueous solution is dissolved in 40ml deionized water according to 1g melamine configures, and stirs and it is mixed in 2 hours, then evaporate to dryness at 80 ℃; Evaporate to dryness sample is put into Muffle furnace, and at 450 ℃, roasting is 2 hours, makes the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule.The 4mg/L methyl orange of degrading under infrared lamp irradiates with the compound infrared light catalyst of prepared carbon quantum dot-carbon nitrogen macromolecule 3 hours, degradation rate is 80%, methyl orange shows also can degrade under this material infrared light.
Figure 14 is the result that methyl orange is separated in the decline of carbon quantum dot-carbon nitrogen macromolecule infrared light.
Embodiment 11:
8g glucose is placed in to the NaOH solution that the concentration of 100ml is 0.2mol/L, and processes (KQ-00KED type high power numerical control ultrasonic cleaning machine) half an hour with ultrasonic wave, obtain orange carbon quantum dot solution; Above-mentioned carbon quantum dot solution 9ml is joined in the aqueous solution of melamine of 40ml, the ratio that the melamine aqueous solution is dissolved in 40ml deionized water according to 1g melamine configures, and stirs and it is mixed in 2 hours, then evaporate to dryness at 80 ℃; Evaporate to dryness sample is put into Muffle furnace, and at 450 ℃, roasting is 2 hours, makes the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule.The 4mg/L methyl orange of degrading under infrared lamp irradiates with the compound infrared light catalyst of prepared carbon quantum dot-carbon nitrogen macromolecule 3 hours, degradation rate is 80%, methyl orange shows also can degrade under this material infrared light.
Figure 15 is the result that methyl orange is separated in the decline of carbon quantum dot-carbon nitrogen macromolecule infrared light.
Embodiment 12:
9g glucose is placed in to the NaOH solution that the concentration of 100ml is 0.2mol/L, and processes (KQ-00KED type high power numerical control ultrasonic cleaning machine) half an hour with ultrasonic wave, obtain orange carbon quantum dot solution; Above-mentioned carbon quantum dot solution 9ml is joined in the aqueous solution of melamine of 40ml, the ratio that the melamine aqueous solution is dissolved in 40ml deionized water according to 1g melamine configures, and stirs and it is mixed in 2 hours, then evaporate to dryness at 80 ℃; Evaporate to dryness sample is put into Muffle furnace, and at 450 ℃, roasting is two hours, makes the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule.The 4mg/L methyl orange of degrading under infrared lamp irradiates with the compound infrared light catalyst of prepared carbon quantum dot-carbon nitrogen macromolecule 3 hours, degradation rate is 80%, methyl orange shows also can degrade under this material infrared light.
Figure 16 is the result that methyl orange is separated in the decline of carbon quantum dot-carbon nitrogen macromolecule infrared light.
Claims (5)
1. a preparation method for the compound infrared light catalyst of synthetic carbon quantum dot-carbon nitrogen macromolecule, the steps include:
(1) with the synthetic carbon quantum dot with up-conversion luminescence character of glucose;
(2) a certain amount of carbon quantum dot solution is joined in the aqueous solution of melamine, stir it is evenly mixed, then evaporate to dryness at 80 ℃;
(3) sample that heats evaporate to dryness gained under 450 ℃ of air atmosphere obtains carbon quantum dot-carbon nitrogen macromolecule composite photo-catalyst for 2 hours.
2. the preparation method of the compound infrared light catalyst of synthetic carbon quantum dot-carbon nitrogen macromolecule according to claim 1, it is characterized in that, described step (1) is synthesized carbon quantum dot, the steps include: 8-9g glucose to be placed in the NaOH solution that 100ml concentration is 0.1-0.2mol/L, and process half an hour with ultrasonic wave, obtain orange carbon quantum dot solution.
3. according to the preparation method of the compound infrared light catalyst of synthetic carbon quantum dot-carbon nitrogen macromolecule described in claim 1 or 2, it is characterized in that, in described step (2), prepare carbon quantum dot-melamine aggregate sample, its step is for to join the carbon quantum dot solution 8-9ml obtaining in step (1) in the melamine aqueous solution of 40ml, the ratio that the melamine aqueous solution is dissolved in 40ml deionized water according to 1g melamine configures, stir and it was mixed in 2 hours, then evaporate to dryness at 80 ℃.
4. according to the preparation method of the compound infrared light catalyst of synthetic carbon quantum dot-carbon nitrogen macromolecule described in claim 1 or 2, it is characterized in that, in described step (3), prepare carbon quantum dot-carbon nitrogen macromolecule composite photo-catalyst, its step is for to put into Muffle furnace by the evaporate to dryness sample in step (2), at 450 ℃, roasting is 2 hours, makes the compound infrared light catalyst of carbon quantum dot-carbon nitrogen macromolecule.
5. according to the preparation method of the compound infrared light catalyst of synthetic carbon quantum dot-carbon nitrogen macromolecule described in claim 1 or 2, it is characterized in that, with the compound infrared light catalyst of prepared carbon quantum dot-carbon nitrogen macromolecule, under irradiating, infrared lamp degrades 4mg/L methyl orange after 4 hours, more than 80% methyl orange can be degraded, and shows this material methyl orange of can effectively degrading under infrared light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410274323.XA CN104117375B (en) | 2014-06-18 | 2014-06-18 | Preparation method of synthesized carbon quantum dot-carbon nitrogen macromolecule composite infrared light catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410274323.XA CN104117375B (en) | 2014-06-18 | 2014-06-18 | Preparation method of synthesized carbon quantum dot-carbon nitrogen macromolecule composite infrared light catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104117375A true CN104117375A (en) | 2014-10-29 |
| CN104117375B CN104117375B (en) | 2017-01-11 |
Family
ID=51763144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410274323.XA Active CN104117375B (en) | 2014-06-18 | 2014-06-18 | Preparation method of synthesized carbon quantum dot-carbon nitrogen macromolecule composite infrared light catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104117375B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105032462A (en) * | 2015-07-03 | 2015-11-11 | 沈阳大学 | Preparation method of iron and nitrogen doped carbon nanoparticle photocatalyst |
| CN105597807A (en) * | 2015-09-21 | 2016-05-25 | 江苏华天通纳米科技有限公司 | Preparation method of carbon nitride photocatalyst with sheet-shaped structure embedded with carbon nano particles |
| CN106497560A (en) * | 2016-08-29 | 2017-03-15 | 北京化工大学 | Controllable carbon point based compound nano material of luminescent properties and preparation method and application |
| CN107597165A (en) * | 2017-09-25 | 2018-01-19 | 兰州大学 | A kind of preparation method of quantum dot carboritride composite |
| CN108706559A (en) * | 2018-05-30 | 2018-10-26 | 安徽大学 | A kind of preparation method of graphite phase carbon nitride material |
| CN109395763A (en) * | 2018-12-14 | 2019-03-01 | 山东大学 | A kind of sulfur doping g-C3N4Porous composite photo-catalyst of/C-dot and the preparation method and application thereof |
| CN110898781A (en) * | 2019-12-09 | 2020-03-24 | 青海师范大学 | Photocatalytic reaction tank based on up-conversion material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071019A (en) * | 2010-12-24 | 2011-05-25 | 苏州方昇光电装备技术有限公司 | Preparation method of water-soluble carbon nano particle material with fluorescence property |
| CN102127431A (en) * | 2010-12-24 | 2011-07-20 | 苏州方昇光电装备技术有限公司 | Manufacturing method of carbon quantum dots and method for preparing photocatalyst by using same |
| CN102134485A (en) * | 2010-12-24 | 2011-07-27 | 苏州方昇光电装备技术有限公司 | Method for mass production of water-soluble fluorescent carbon nanoparticles |
| CN103745836A (en) * | 2013-12-29 | 2014-04-23 | 渤海大学 | A method for preparing a g-C3N4/carbon quantum dot composite electrode |
-
2014
- 2014-06-18 CN CN201410274323.XA patent/CN104117375B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071019A (en) * | 2010-12-24 | 2011-05-25 | 苏州方昇光电装备技术有限公司 | Preparation method of water-soluble carbon nano particle material with fluorescence property |
| CN102127431A (en) * | 2010-12-24 | 2011-07-20 | 苏州方昇光电装备技术有限公司 | Manufacturing method of carbon quantum dots and method for preparing photocatalyst by using same |
| CN102134485A (en) * | 2010-12-24 | 2011-07-27 | 苏州方昇光电装备技术有限公司 | Method for mass production of water-soluble fluorescent carbon nanoparticles |
| CN103745836A (en) * | 2013-12-29 | 2014-04-23 | 渤海大学 | A method for preparing a g-C3N4/carbon quantum dot composite electrode |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105032462A (en) * | 2015-07-03 | 2015-11-11 | 沈阳大学 | Preparation method of iron and nitrogen doped carbon nanoparticle photocatalyst |
| CN105597807A (en) * | 2015-09-21 | 2016-05-25 | 江苏华天通纳米科技有限公司 | Preparation method of carbon nitride photocatalyst with sheet-shaped structure embedded with carbon nano particles |
| CN106497560A (en) * | 2016-08-29 | 2017-03-15 | 北京化工大学 | Controllable carbon point based compound nano material of luminescent properties and preparation method and application |
| CN107597165A (en) * | 2017-09-25 | 2018-01-19 | 兰州大学 | A kind of preparation method of quantum dot carboritride composite |
| CN108706559A (en) * | 2018-05-30 | 2018-10-26 | 安徽大学 | A kind of preparation method of graphite phase carbon nitride material |
| CN109395763A (en) * | 2018-12-14 | 2019-03-01 | 山东大学 | A kind of sulfur doping g-C3N4Porous composite photo-catalyst of/C-dot and the preparation method and application thereof |
| CN109395763B (en) * | 2018-12-14 | 2021-11-09 | 山东大学 | Sulfur-doped g-C3N4C-dot porous composite photocatalyst and preparation method and application thereof |
| CN110898781A (en) * | 2019-12-09 | 2020-03-24 | 青海师范大学 | Photocatalytic reaction tank based on up-conversion material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104117375B (en) | 2017-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104117375B (en) | Preparation method of synthesized carbon quantum dot-carbon nitrogen macromolecule composite infrared light catalyst | |
| CN102895965B (en) | Er<3+>: Y3Al5O12/TiO2 composite membrane and application thereof in catalytic degradation of organic dye | |
| CN103480353A (en) | Method for synthesis of carbon quantum dot solution by hydrothermal process to prepare composite nano-photocatalyst | |
| CN107008467A (en) | The preparation method and purposes of a kind of heterojunction photocatalyst | |
| CN107774294A (en) | A kind of novel photochemical catalyst K g C3N4And its prepare and apply | |
| CN105195195A (en) | Photocatalyst CN-ZnO and preparation method and application thereof | |
| CN108855131A (en) | A kind of preparation and application of silver-nickel bimetal doping titanium dioxide nano composite material | |
| CN113019867A (en) | Method for preparing photo-thermal film based on spraying method | |
| CN105664993A (en) | Fluorescent doped carbon nanometer photocatalyst and preparation method and application thereof | |
| CN105478153B (en) | A kind of CeVO4/Ag/g‑C3N4Composite photo-catalyst and preparation method thereof | |
| Guo et al. | Photocatalysis of NaYF 4: Yb, Er/CdSe composites under 1560 nm laser excitation | |
| Roy et al. | Covalently interconnected layers in g-C3N4: toward high mechanical stability, catalytic efficiency and sustainability | |
| CN105771953A (en) | Preparation method of zinc titanate and titanium dioxide composite nano material | |
| Li et al. | Exploration of long afterglow luminescent materials composited with graphitized carbon nitride for photocatalytic degradation of basic fuchsin | |
| Yan et al. | Microwave hydrothermal synthesis of lanthanum oxyfluoride nanorods for photocatalytic nitrogen fixation: Effect of Pr doping | |
| CN108014850B (en) | Preparation method and application of tetracarboxyphenyl porphyrin supramolecular photocatalyst | |
| Fang et al. | Optical and photocatalytic properties of Er 3+ and/or Yb 3+ doped TiO 2 photocatalysts | |
| CN108079990B (en) | Titanium dioxide coated copper nano composite material and preparation method and application thereof | |
| CN106732726B (en) | A kind of photochemical catalyst CNB-BA and preparation method thereof | |
| Ding et al. | The “photons storage pool” effect of long afterglow phosphor for r'ound-the-clock photocatalytic clean energy evolution | |
| CN107442144A (en) | A kind of adjustable black phosphorus quantum dot light catalyst of band gap with and its preparation method and application | |
| CN104941651B (en) | A kind of zinc oxide of cupric/graphene quantum dot catalyst and preparation method | |
| CN107597100B (en) | Preparation method of carbon-point-modified two-dimensional sodium tungstate/tungsten oxide photocatalytic material | |
| CN107626300B (en) | Thermally driven catalyst and application thereof | |
| CN115784363A (en) | Membrane self-cleaning method based on in-situ activation of persulfate on photothermal membrane interface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |