CN114471723A - Construction method of double-electron transfer channel photocatalyst - Google Patents
Construction method of double-electron transfer channel photocatalyst Download PDFInfo
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- 239000011941 photocatalyst Substances 0.000 title claims abstract description 16
- 238000012546 transfer Methods 0.000 title claims abstract description 13
- 238000010276 construction Methods 0.000 title claims abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000000243 solution Substances 0.000 claims abstract description 25
- 230000027756 respiratory electron transport chain Effects 0.000 claims abstract description 16
- 235000019441 ethanol Nutrition 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- GPNNOCMCNFXRAO-UHFFFAOYSA-N 2-aminoterephthalic acid Chemical compound NC1=CC(C(O)=O)=CC=C1C(O)=O GPNNOCMCNFXRAO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 7
- 238000001291 vacuum drying Methods 0.000 claims abstract description 7
- 230000005684 electric field Effects 0.000 claims abstract description 5
- 238000000227 grinding Methods 0.000 claims abstract description 4
- 239000011259 mixed solution Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 39
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 39
- 239000000725 suspension Substances 0.000 claims description 10
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 9
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 36
- 230000001699 photocatalysis Effects 0.000 abstract description 8
- 239000002131 composite material Substances 0.000 abstract description 3
- 238000005215 recombination Methods 0.000 abstract description 3
- 230000006798 recombination Effects 0.000 abstract description 3
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 abstract description 2
- 238000003760 magnetic stirring Methods 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000001228 spectrum Methods 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 7
- 229940043267 rhodamine b Drugs 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000007146 photocatalysis Methods 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000000026 X-ray photoelectron spectrum Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910003077 Ti−O Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/22—Organic complexes
- B01J31/2204—Organic complexes the ligands containing oxygen or sulfur as complexing atoms
- B01J31/2208—Oxygen, e.g. acetylacetonates
- B01J31/2226—Anionic ligands, i.e. the overall ligand carries at least one formal negative charge
- B01J31/2243—At least one oxygen and one nitrogen atom present as complexing atoms in an at least bidentate or bridging ligand
-
- 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
-
- 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
- B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
- B01J2531/40—Complexes comprising metals of Group IV (IVA or IVB) as the central metal
- B01J2531/46—Titanium
-
- 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
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Abstract
The invention provides a construction method of a double-electron transfer channel photocatalyst, which comprises the steps of adding CQDs (carbon quantum dots) into absolute ethyl alcohol to form a CQDs ethyl alcohol solution, and then adding g-C3N4(graphite-like phase carbon nitride) is added into absolute ethyl alcohol, CQDs ethanol solution is added into g-C3N4Adding a product obtained by magnetic stirring, sealing, constant-temperature heating, cooling, vacuum drying and grinding and 2-amino terephthalic acid into an ethanol solution, adding the mixed solution into a polytetrafluoroethylene reaction kettle, heating, naturally cooling, centrifuging and vacuum drying to obtain the dual-electron transfer channel photocatalyst CQDs/g-C3N4/NH2-MIL-125. By constructing the composite structure, an internal electric field and van der Waals dissimilarity are establishedThe texture junction constructs a double-channel electron transfer mode, improves the electron transfer efficiency, inhibits the recombination of photo-generated electron hole pairs, and further improves the photocatalytic activity.
Description
Technical Field
The invention relates to the technical field of photocatalysts, in particular to a construction method of a double-electron transfer channel photocatalyst.
Background
The photocatalysis technology is one of the commonly used advanced oxidation technologies and is an effective means for solving the problem of environmental pollution. The photocatalysis technology can utilize sunlight as energy, has no selectivity to reactants, can almost generate oxidation-reduction reaction with any organic pollutant and further finally oxidize the organic pollutant into CO2And H2Therefore, the photocatalysis technology has wide application prospect in the aspect of treating environmental pollution. The recombination of photo-generated electrons and holes is an important factor for restricting the photocatalytic efficiency, so that the improvement of the transfer and separation efficiency of the photo-generated electrons is the key research point of the photocatalytic technology.
Disclosure of Invention
The invention aims to provide a construction method of a double-electron transfer channel photocatalyst, which specifically comprises the following steps:
a. weighing a certain amount of CQDs (carbon quantum dots) and adding the CQDs into absolute ethyl alcohol to form a CQDs ethyl alcohol solution;
b. a certain amount of g-C3N4Adding (graphite-like carbon nitride) into absolute ethyl alcohol, performing ultrasonic treatment for 30-60 min, and adding CQDs ethanol solution into g-C3N4Forming suspension in the ethanol solution, and magnetically stirring for 1 h;
c. b, putting the suspension liquid in the step b into a polytetrafluoroethylene reaction kettle, sealing, heating for 2 hours at the temperature of 60-100 ℃ in a thermostat, cooling to room temperature, and carrying out vacuum drying for 2 hours at the temperature of 60-100 ℃ on the obtained product;
d. grinding the dried product in the step c to obtainCQDs/g-C3N4Powder;
e. the CQDs/g-C obtained in the step d3N4Adding 2-amino terephthalic acid into the N, N-dimethylformamide and methanol solution, uniformly mixing, adding tetrabutyl titanate, and stirring at room temperature for 30-60 min;
f. putting the mixed solution into a polytetrafluoroethylene reaction kettle, heating for 24 hours at 120-180 ℃, naturally cooling, centrifugally separating, washing with N, N-dimethylformamide and methanol respectively, and vacuum drying for 6-10 hours at 80 ℃ to obtain the dual-electron transfer channel photocatalyst CQDs/g-C3N4/NH2-MIL-125。
Preferably, in step a, the ratio of the mass of CQDs to the volume of absolute ethanol may be: (5-10) mg: 10ml, and the optimal mass and volume ratio is 9 mg: 10 ml.
Preferably, in said step b, the mass of CQDs, g-C3N4The mass of (2) to the volume of the suspension can be (5-10) mg: (80-100) mg: mass of CQDs, g-C, in the range of 40ml3N4The optimal ratio of mass to suspension volume is 9 mg: 90 mg: 40 ml.
Preferably, in said step e, CQDs/g-C3N4The mass of (2-20) mg, the mass of 2-aminoterephthalic acid, and the volume ratio of the N, N-dimethylformamide and methanol solution to tetrabutyl titanate may be: (1000-2000) mg: 27 ml: (0.2-1.0) ml, and the optimal ratio is 5.4 mg: 1087 mg: 27 ml: 0.52 ml.
Preferably, in the step e, the volume ratio of the N, N-dimethylformamide to the methanol is 9: 1.
preferably, in the step f, the number of washing times with the N, N-dimethylformamide and methanol solution is 3.
Preferably, CQDs/g-C obtained3N4/NH2MIL-125 has a two-channel electron transfer through g-C3N4And NH2-electron transfer by built-in electric field of MIL-125 configuration; by CQDs with g-C3N4The van der waals heterojunction formed therebetween performs electron transfer.
Compared with the prior art, the invention has the advantages and effects that:
the invention couples g-C3N4The characteristics of proper energy band position and CQDs for promoting electron transfer, CQDs/g-C are developed3N4/NH2The MIL-125 composite photocatalyst establishes an internal electric field and a Van der Waals heterojunction through constructing a composite structure, constructs a dual-channel electron transfer mode, improves the electron transfer efficiency, inhibits the recombination of photo-generated electron hole pairs, and further improves the photocatalytic activity;
CQDs/g-C3N4/NH2degradation removal capability of MIL-125 on dye pollutant rhodamine B (RhB) in water is higher than that of NH2-MIL-125 and g-C3N4Can be improved by about 38.8 percent and 71.0 percent respectively.
Drawings
In order to clearly illustrate the embodiments or technical solutions of the present invention in the prior art, the drawings used in the description of the embodiments or prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a diagram of CQDs/g-C prepared in the examples of the present invention3N4/NH2SEM picture of MIL-125;
FIG. 2 is a diagram of CQDs/g-C prepared in the example of the present invention3N4/NH2-XPS spectrum of MIL-125, wherein graph a is the binding energy full spectrum of C, N, Ti, O elements, graph b is the binding energy spectrum of C elements, graph C is the binding energy spectrum of N elements, graph d is the binding energy spectrum of Ti elements, and graph e is the binding energy spectrum of O elements;
FIG. 3 is a diagram of CQDs/g-C obtained in the example of the present invention3N4/NH2-MIL-125 two-channel electron transfer schematic;
FIG. 4 is a diagram of CQDs/g-C obtained in example of the present invention3N4/NH2Comparison graph of effect of MIL-125 degrading rhodamine B dye in water.
Detailed Description
The drawings are for illustration purposes only and are not to be construed as limiting the invention; for a better understanding of the present embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; some well-known structures in the drawings and descriptions thereof may be omitted for those skilled in the art.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Examples
9mg of CQDs was weighed out and added to 10mL of absolute ethanol to form an ethanol solution of CQDs. 90mg g-C3N4Adding into anhydrous ethanol, and performing ultrasonic treatment for 60 min. Adding CQDs ethanol solution to g-C3N4A40 mL suspension was formed in ethanol solution and stirred magnetically for 1 h. The suspension is put into a 100mL polytetrafluoroethylene reaction kettle, sealed and heated in a thermostat at 90 ℃ for 2 h. Cooled to room temperature and the resulting product was dried under vacuum at 90 ℃ for 2 h. Grinding to obtain CQDs/g-C3N4And (3) powder.
5.4mg of CQDs/g-C was taken3N4And 1.087g of 2-aminoterephthalic acid were added to a solution of N, N-dimethylformamide and methanol (volume ratio: 9:1) in a volume of 27mL, and after mixing, 0.52mL of tetrabutyl titanate was added and stirred at room temperature for 30 min. And (3) putting the mixed solution into a polytetrafluoroethylene reaction kettle, and heating at 150 ℃ for 24 h. Naturally cooling, centrifuging, washing with N, N-dimethylformamide and methanol for 3 times, vacuum drying at 80 deg.C for 6 hr to obtain dual electron transfer channel photocatalyst CQDs/g-C3N4/NH2MIL-125, as shown in FIG. 1, CQDs/g-C obtained for the examples3N4/NH2SEM image of MIL-125.
As shown in FIG. 2, CQDs/g-C were obtained3N4/NH2XPS spectrum of MIL-125, surface chemistry mainly C, N, O, Ti four elements. In the b diagram, the spectrum of C1s contains four peaks, and the binding energies are 284.54eV and 285.08eV respectively286.24eV and 288.79eV, wherein 284.54eV corresponds to C-C, C ═ C, C-H. The other bond energies correspond to C-N, C-O, C ═ O. In the spectrum of N1s in the c diagram, there are three bond energies of 399.3eV, 399.9eV and 402.1eV, which correspond to NH respectively2-NH of-MIL-1252-、g-C3N4N- (C)3Nitrogen (N) with positive charge+/-NH+-). In the d diagram, Ti 2p mainly has two bonding energies of 458.8eV and 464.5eV, which correspond to Ti 2p3/2And Ti 2p1/2It is shown that the Ti in the titanium clusters remains in the IV oxidation state after the titanium is combined with oxygen. In panel e, the spectrum represents O1s, where 530.1eV corresponds to NH2The bond energies of-MIL-125 ligand Ti-O, C ═ O and-OH are 531.5eV and 532.3eV, respectively.
FIG. 3 is a schematic diagram of the two-channel electron transfer obtained in the example, channel one, via g-C3N4And NH2-electron transfer by built-in electric field of MIL-125 configuration; channel two, by CQDs and g-C3N4The van der waals heterojunction formed therebetween performs electron transfer.
The obtained double electron transfer channel photocatalyst CQDs/g-C3N4/NH2-MIL-125、NH2-MIL-125、g-C3N4Respectively degrading a representative dye pollutant rhodamine B (RhB) under the same condition. Preparing the solution with the concentration of 5mg/L and the volume of 100mL, adding 20mg of photocatalyst, after dark reaction for 60min, illuminating by adopting a 35W xenon lamp, setting the distance between a light source and a reactor to be 14cm, carrying out photocatalytic treatment for 2h, extracting a small amount of liquid at the same interval time point, centrifuging (4000rpm for 10min), and collecting the supernatant. The RhB concentration in the solution was measured by uv-vis spectrophotometer.
As shown in FIG. 4, the results of the experiments showed that CQDs/g-C3N4/NH2Degradation removal capability of MIL-125 to dye contaminant RhB in water than NH2-MIL-125 and g-C3N4The improvement is about 38.8 percent and 71.0 percent respectively, which is the optimal scheme.
It should be noted that the illustrated embodiment of the present invention is the best embodiment in the experiments, and the inventors have performed experiments on the amount, volume and ratio of various raw materials one by one through a large number of single experiments to finally obtain the best scheme. Other non-optimal solutions are too numerous and will not be described in detail in this description. Some of the embodiments may be practiced using or with reference to conventional techniques.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. A construction method of a double-electron transfer channel photocatalyst is characterized by specifically comprising the following steps:
a. weighing a certain amount of CQDs and adding the CQDs into absolute ethyl alcohol to form CQDs ethyl alcohol solution;
b. a certain amount of g-C3N4Adding the mixture into absolute ethyl alcohol, performing ultrasonic treatment for 30-60 min, and adding a CQDs ethanol solution into g-C3N4Forming suspension in the ethanol solution, and magnetically stirring for 1 h;
c. b, putting the suspension liquid in the step b into a polytetrafluoroethylene reaction kettle, sealing, heating for 2 hours at the temperature of 60-100 ℃ in a thermostat, cooling to room temperature, and carrying out vacuum drying for 2 hours at the temperature of 60-100 ℃ on the obtained product;
d. grinding the product dried in step C to obtain CQDs/g-C3N4Powder;
e. the CQDs/g-C obtained in the step d3N4Adding 2-amino terephthalic acid into the N, N-dimethylformamide and methanol solution, uniformly mixing, adding tetrabutyl titanate, and stirring at room temperature for 30-60 min;
f. putting the mixed solution into a polytetrafluoroethylene reaction kettle, heating for 24 hours at 120-180 ℃, naturally cooling, centrifugally separating, washing with N, N-dimethylformamide and methanol respectively, and vacuum drying for 6-10 hours at 80 ℃ to obtain the dual-electron transfer channel photocatalyst CQDs/g-C3N4/NH2-MIL-125。
2. The method for constructing a photocatalyst with two electron transfer channels as claimed in claim 1, wherein in step a, the ratio of the mass of CQDs to the volume of absolute ethyl alcohol is (5-10) mg: 10 ml.
3. The method as claimed in claim 2, wherein in step a, the ratio of the mass of CQDs to the volume of absolute ethanol is 9 mg: 10 ml.
4. The method as claimed in claim 1, wherein the CQDs in step b have a mass g-C3N4The mass to volume ratio of the suspension is (5-10) mg: (80-100) mg: 40 ml.
5. The method as claimed in claim 4, wherein the CQDs mass g-C in step b3N49mg mass to volume of suspension: 90 mg: 40 ml.
6. The method as claimed in claim 1, wherein in step e, CQDs/g-C3N4The mass of the compound, the mass of the 2-aminoterephthalic acid, the volume of the N, N-dimethylformamide and methanol solution and the volume ratio of the tetrabutyl titanate are (2-20) mg: (1000-2000) mg: 27 ml: (0.2-1.0) ml.
7. The method as claimed in claim 6, wherein CQDs/g-C3N4The mass of 2-aminoterephthalic acid, the volume of the solution of N, N-dimethylformamide and methanol to the volume of tetrabutyl titanate were in a ratio of 5.4 mg: 1087 mg: 27 ml: 0.52 ml.
8. The method for constructing a dual electron transfer channel photocatalyst as claimed in claim 6, wherein in the step e, the volume ratio of N, N-dimethylformamide to methanol is 9: 1.
9. the method as claimed in claim 1, wherein the number of washing with N, N-dimethylformamide and methanol solution in step f is 3.
10. The method of claim 1, wherein the CQDs/g-C are obtained3N4/NH2MIL-125 has a two-channel electron transfer through g-C3N4And NH2-electron transfer by built-in electric field of MIL-125 configuration; by CQDs with g-C3N4The van der waals heterojunction formed therebetween performs electron transfer.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104722335A (en) * | 2015-01-30 | 2015-06-24 | 湖南大学 | Graphite type carbon nitride-metal organic frame composite photocatalyst as well as preparation method and application of graphite type carbon nitride-metal organic frame composite photocatalyst |
| CN104841470A (en) * | 2015-04-17 | 2015-08-19 | 浙江工业大学 | Composite titanium dioxide nano-sheet photocatalyst, preparation method and applications thereof |
| CN109550049A (en) * | 2018-12-03 | 2019-04-02 | 浙江大学 | Application of the carbon quantum dot-class graphite phase carbon nitride catalysis material in preparation sterilization and the drug for promoting skin scar healing |
| US20200378018A1 (en) * | 2020-04-16 | 2020-12-03 | Chinese Research Academy Of Environmental Sciences | Carbon dots-based photocatalytic electrode for simultaneous organic matter degradation and heavy metal reduction and use thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104722335A (en) * | 2015-01-30 | 2015-06-24 | 湖南大学 | Graphite type carbon nitride-metal organic frame composite photocatalyst as well as preparation method and application of graphite type carbon nitride-metal organic frame composite photocatalyst |
| CN104841470A (en) * | 2015-04-17 | 2015-08-19 | 浙江工业大学 | Composite titanium dioxide nano-sheet photocatalyst, preparation method and applications thereof |
| CN109550049A (en) * | 2018-12-03 | 2019-04-02 | 浙江大学 | Application of the carbon quantum dot-class graphite phase carbon nitride catalysis material in preparation sterilization and the drug for promoting skin scar healing |
| US20200378018A1 (en) * | 2020-04-16 | 2020-12-03 | Chinese Research Academy Of Environmental Sciences | Carbon dots-based photocatalytic electrode for simultaneous organic matter degradation and heavy metal reduction and use thereof |
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