CN115155644A - Increase g-C 3 N 4 Method for catalytic activation of photocatalytic fiber membrane - Google Patents
Increase g-C 3 N 4 Method for catalytic activation of photocatalytic fiber membrane Download PDFInfo
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- 239000012528 membrane Substances 0.000 title claims abstract description 59
- 239000000835 fiber Substances 0.000 title claims abstract description 58
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 7
- 230000004913 activation Effects 0.000 title claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 125000001622 2-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C(*)C([H])=C([H])C2=C1[H] 0.000 claims abstract 2
- BLFVVZKSHYCRDR-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-2-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-2-amine Chemical compound C1=CC=CC=C1N(C=1C=C2C=CC=CC2=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C3C=CC=CC3=CC=2)C=C1 BLFVVZKSHYCRDR-UHFFFAOYSA-N 0.000 claims description 12
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000013033 photocatalytic degradation reaction Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- BGBCYDVLLQOGEI-UHFFFAOYSA-N 4-(4-aminophenyl)-3-naphthalen-2-ylaniline Chemical compound C1=CC(N)=CC=C1C1=CC=C(N)C=C1C1=CC=C(C=CC=C2)C2=C1 BGBCYDVLLQOGEI-UHFFFAOYSA-N 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 229920002239 polyacrylonitrile Polymers 0.000 description 8
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 229960000907 methylthioninium chloride Drugs 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 238000009987 spinning Methods 0.000 description 4
- 229920000877 Melamine resin Polymers 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000010041 electrostatic spinning Methods 0.000 description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 3
- 239000011941 photocatalyst Substances 0.000 description 3
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000013068 control sample Substances 0.000 description 2
- 238000002329 infrared spectrum Methods 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- JIHQDMXYYFUGFV-UHFFFAOYSA-N 1,3,5-triazine Chemical group C1=NC=NC=N1 JIHQDMXYYFUGFV-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003647 oxidation 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
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- -1 superoxide radicals Chemical class 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
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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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
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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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
- B01J31/0235—Nitrogen containing compounds
- B01J31/0237—Amines
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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
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/58—Fabrics or filaments
- B01J35/59—Membranes
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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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
- B01J37/0219—Coating the coating containing organic compounds
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
- C01B15/01—Hydrogen peroxide
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/30—Treatment of water, waste water, or sewage by irradiation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- 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
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Abstract
The invention discloses a method for improving g-C 3 N 4 The method for catalytic activation of the photocatalytic fiber membrane is carried out at g-C 3 N 4 Spraying N, N '-diphenyl-N, N' -di on the surface of the photocatalytic fiber membrane(2-naphthyl) -1,1 '-biphenyl-4,4' -diamine. Compared with the prior art, the method of the invention has simple operation and can effectively improve g-C 3 N 4 Photocatalytic activity of the photocatalytic fiber membrane.
Description
Technical Field
The invention belongs to the field of catalysts, and particularly relates to a method for improving g-C 3 N 4 A method for catalytically activating a photocatalytic fiber membrane.
Background
Graphite phase carbon nitride (g-C) 3 N 4 ) Has the advantages of good chemical stability, good photoresponse capability and the like, and the C, N atom in the structure is sp 2 The hybrid forms a highly delocalized pi conjugated system, has a stacked structure of graphene, and is considered as a photocatalyst with attractive force and application potential.
g-C 3 N 4 The preparation method has been reported more, for example, the preparation method is obtained by taking organic matters such as melamine and the like as precursors and carrying out high-temperature polycondensation, and a certain amount of sodium chloride auxiliary agent such as CN104108688A, CN113828345A, CN107746710A, CN110327872A and the like can be added in the process.
g-C 3 N 4 During the photocatalytic oxidation process, high-activity free radical species such as superoxide radicals and cavities can be generated, and the degradation of organic dye molecules is promoted. While g-C 3 N 4 The surface of the material is formed with 1,4 endoperoxide, and H can be prepared by photocatalytic two-electron oxygen reduction (ORR) 2 O 2 And simultaneously suppress H 2 O 2 Decomposition of (2). However, in practical use, the photocatalyst is generally prone to agglomeration and influence catalytic performance, and is not easy to recycle. g-C is prepared by electrostatic spinning technology by utilizing the supporting effect of a fiber membrane 3 N 4 Compounding into fiber membrane to obtain g-C 3 N 4 The photocatalytic fiber membrane can effectively solve the problems, such as CN110694661A, CN113186655A, CN112076785A, CN110227554A, CN105561806A.
Disclosure of Invention
The invention further provides a method for improving g-C on the basis of the prior art 3 N 4 A method for catalytically activating a photocatalytic fiber membrane.
In order to achieve the purpose, the invention adopts the following technical scheme:
increase g-C 3 N 4 The method for the catalytic activation of the photocatalytic fiber membrane is characterized by comprising the following steps: in g-C 3 N 4 The surface of the photocatalytic fiber membrane is sprayed with N, N '-diphenyl-N, N' -di (2-naphthyl) -1,1 '-biphenyl-4,4' -diamine.
Preferably, the N, N '-diphenyl-N, N' -di (2-naphthyl) -1,1 '-biphenyl-4,4' -diamine is used in an amount of g-C 3 N 4 1~5% of the mass of the photocatalytic fiber membrane.
The specific operation process comprises the following steps: firstly, N '-diphenyl-N, N' -di (2-naphthyl) -1,1 '-biphenyl-4,4' -diamine is dispersed in liquid medium and then sprayed on g-C 3 N 4 Photocatalytic fiber film and then dried.
Preferably, said g-C 3 N 4 g-C in photocatalytic fiber membrane 3 N 4 The content of (b) is 1 to 50 wt%.
More preferably, said g-C 3 N 4 g-C in photocatalytic fiber membrane 3 N 4 The content of (b) is 10 to 30 wt%.
g-C obtained according to the above method 3 N 4 A photocatalytic fiber membrane.
g-C obtained according to the above method 3 N 4 The application of the photocatalytic fiber membrane in photocatalytic degradation of organic pollution.
g-C obtained by the above method 3 N 4 The application of the photocatalytic fiber membrane in the photocatalytic production of hydrogen peroxide.
The application of N, N '-diphenyl-N, N' -di (2-naphthyl) -1,1 '-biphenyl-4,4' -diamine is characterized in that: the N, N '-diphenyl-N, N' -di (2-naphthyl) -1,1 '-biphenyl-4,4' -diamine is used as g-C 3 N 4 Or g-C 3 N 4 A cocatalyst for photocatalytic fiber membrane.
Compared with the prior art, the method of the invention has simple operation and can effectively improve g-C 3 N 4 Photocatalytic activity of the photocatalytic fiber membrane.
Drawings
FIG. 1 shows g-C 3 N 4 Infrared spectrum of the photocatalytic fiber film.
FIG. 2 shows g-C 3 N 4 The photocatalytic degradation performance of the photocatalytic fiber membrane is shown.
FIG. 3 is g-C 3 N 4 Photocatalytic production of H from photocatalytic fiber membranes 2 O 2 And (6) performance graphs.
FIG. 4 is g-C 3 SEM image of N.
FIG. 5 is g-C 3 N 4 SEM image of photocatalytic fiber membrane.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the following examples.
Example 1
1. Preparation of fibrous membranes
g-C 3 N 4 Photocatalytic fiber membrane
1) Grinding 6g of melamine and 30g of sodium chloride until the melamine and the sodium chloride are uniformly mixed, putting the mixture into a tube furnace, calcining the mixture in a nitrogen atmosphere at the flow rate of 60 mL/min, and calcining the mixture at 650 ℃ for 3h at the heating rate of 5 ℃/min;
2) After the tube furnace is cooled to the room temperature, the temperature is raised again (the speed is 5 ℃/min) in the nitrogen atmosphere with the flow rate of 60 mL/min, the calcination is carried out for 3h at 650 ℃, after the cooling, the sodium chloride is removed by using deionized water, and the g-C is prepared by freeze drying 3 N 4 A photocatalyst, designated PCN-5;
3) Taking 0.125g of g-C 3 N 4 Putting the mixture into 5g of N, N dimethylformamide, ultrasonically dispersing for 30min, adding 0.5g of polyacrylonitrile (molecular weight is 15 thousands), and stirring to form uniform spinning solution;
4) Adding the prepared spinning solution into an injector for electrostatic spinning, wherein the parameters are controlled to be 16kV, the flow rate is 0.5mL/h, the distance is 10cm, and the rotating speed is 200rpm;
5) Drying the composite membrane in a 60 ℃ oven for 12h to obtain the g-C 3 N 4 And (5) preparing a photocatalytic fiber membrane for later use.
g-C 3 N 4 And g-C 3 N 4 The preparation method of the photocatalytic fiber membrane is only illustrative, and the present invention is not limited to the above-mentioned method, and g-C prepared by other methods of the prior art 3 N 4 And g-C 3 N 4 Photocatalytic fiber membranes are also suitable for use in the present invention.
PAN fiber membrane
1) 0.5g of polyacrylonitrile (molecular weight 15 ten thousand) is put into 5g of N, N dimethylformamide and stirred to form uniform spinning solution;
2) Adding the prepared spinning solution into an injector for electrostatic spinning, wherein the parameters are controlled to be 16kV, the flow rate is 0.5mL/h, the distance is 10cm, and the rotating speed is 200rpm;
3) And (3) drying in an oven at 60 ℃ for 12h to obtain a PAN fiber membrane as a control sample.
2. Treatment of the fiber membrane:
g to C 3 N 4 N, N '-diphenyl-N, N' -di (2-naphthyl) -1,1 '-biphenyl-4,4' -diamine (beta-NPB for short) with the mass fraction of 1~5 percent of the photocatalytic fiber membrane is dissolved and dispersed in tetrahydrofuran, and the solution is sprayed on g-C by a high-pressure spraying mode 3 N 4 Drying the fiber membrane on a photocatalytic fiber membrane at the temperature of 60 to 80 ℃ for 10 to 14h to obtain the beta-NPB-g-C 3 N 4 A photocatalytic fiber membrane.
The beta-NPB is sprayed on the PAN fibrous membrane by the same method and dosage to obtain the beta-NPB-PAN fibrous membrane as a control sample.
FIG. 1 shows g-C 3 N 4 Infrared spectrum of the photocatalytic fiber film. 806cm as shown in the figure -1 Has an absorption peak of g-C 3 N 4 Specific curvature of the S-triazine ring of (a). At 1239, 1336, and 1630cm -1 The absorption peaks at (b) are CN and C = N oscillations of aromatic CN heterocycles. 2239cm -1 The absorption peak at (A) is a characteristic peak of a cyano group. These results confirm g-C 3 N 4 The photocatalytic fiber membrane is successfully prepared.
FIG. 2 shows g-C 3 N 4 The photocatalytic degradation performance of the photocatalytic fiber membrane is shown. The initial mass concentration of methylene blue is 10mg/L. g-C as shown in the figure 3 N 4 The photocatalytic fiber membrane has trace adsorption of methylene blue under the condition of light-resistant reaction, the degradation rate is finally stabilized to be about 20.00%, and the degradation rate is 91.85% after illumination for 60 min.
FIG. 3 is g-C 3 N 4 Photocatalytic fiberPhotocatalytic production of H from membranes 2 O 2 And (6) performance graphs. g-C 3 N 4 H, after the photocatalytic fiber membrane is subjected to photocatalytic reaction for 60min 2 O 2 The equilibrium concentration of (a) reaches 279.76. Mu. Mol/L.
FIG. 4 and FIG. 5 are g-C, respectively 3 N 4 And g-C 3 N 4 SEM image of photocatalytic fiber membrane. The magnification is 2 ten thousand times. g-C 3 N 4 Is bound in the fiber membrane, thereby effectively overcoming powdery g-C 3 N 4 The catalyst is easy to agglomerate, and the dispersity of the catalyst is enhanced, so that the g-C is improved 3 N 4 The catalytic performance of (2).
TABLE 1 comparison of the photocatalytic degradation of methylene blue and the photocatalytic hydrogen peroxide production by different fiber membranes
| g-C 3 N 4 | PAN fiber membrane | β-NPB | g-C 3 N 4 Photocatalytic fiber membrane | β-NPB-g-C 3 N 4 Photocatalytic fiber membrane | beta-NPB-PAN fiber membrane | |
| Methylene blue degradation rate (%) | 90 | 0 | 0 | 91.85 | 99.8 | 0 |
| Yield of hydrogen peroxide (mu mol/L) | 214 | 0 | 0 | 279.76 | 356 | 0 |
Experiments have shown that beta-NPB, although not photocatalytically active, is not active against g-C 3 N 4 Has the function of promoting catalysis, and can effectively improve g-C 3 N 4 Photocatalytic activation.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. Increase g-C 3 N 4 The method for the catalytic activation of the photocatalytic fiber membrane is characterized by comprising the following steps: in g-C 3 N 4 The surface of the photocatalytic fiber membrane is sprayed with N, N '-diphenyl-N, N' -di (2-naphthyl) -1,1 '-biphenyl-4,4' -diamine.
2. The method of claim 1, wherein: the N, N ' -diphenyl-N, N ' -di (2-naphthyl) -1,1' -biThe amount of benzene-4,4' -diamine used is g-C 3 N 4 1~5% of the mass of the photocatalytic fiber membrane.
3. The method of claim 1, wherein: firstly, N '-diphenyl-N, N' -di (2-naphthyl) -1,1 '-biphenyl-4,4' -diamine is dispersed in liquid medium and then sprayed on g-C 3 N 4 Photocatalytic fiber film and then dried.
4. The method of claim 1, wherein: the g to C 3 N 4 g-C in photocatalytic fiber membrane 3 N 4 The content of (b) is 1 to 50 wt%.
5. The method of claim 1, wherein: the g to C 3 N 4 g-C in photocatalytic fiber membrane 3 N 4 The content of (b) is 10 to 30 wt%.
6. g-C obtained by the process according to any one of claims 1 to 5 3 N 4 A photocatalytic fiber membrane.
7. g-C as claimed in claim 6 3 N 4 The application of the photocatalytic fiber membrane in photocatalytic degradation of organic pollution.
8. g-C as claimed in claim 6 3 N 4 The application of the photocatalytic fiber membrane in the photocatalytic production of hydrogen peroxide.
Use of N, N '-diphenyl-N, N' -bis (2-naphthyl) -1,1 '-biphenyl-4,4' -diamine characterized by: the N, N '-diphenyl-N, N' -di (2-naphthyl) -1,1 '-biphenyl-4,4' -diamine is used as g-C 3 N 4 Or g-C 3 N 4 A cocatalyst for photocatalytic fiber membrane.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075923A (en) * | 2019-04-30 | 2019-08-02 | 江苏大学 | A kind of g-C3N4The bionical construction method and application thereof of/BiOI-pDA@PVDF photocatalysis membrana |
| CN111229282A (en) * | 2020-03-04 | 2020-06-05 | 中国科学院生态环境研究中心 | Nonmetal PI-g-C3N4Fiber membrane photocatalyst and preparation method thereof |
| CN113399002A (en) * | 2021-05-31 | 2021-09-17 | 南京林业大学 | Photocatalytic nanofiber membrane for dye degradation and preparation method thereof |
| CN113908855A (en) * | 2021-10-18 | 2022-01-11 | 四川大学 | Preparation method of supported porous photocatalytic fiber membrane |
| CN114797985A (en) * | 2022-03-25 | 2022-07-29 | 哈尔滨工程大学 | Flexible and recyclable C 3 N 4 ZIF-8 composite nanofiber photocatalytic film and preparation method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075923A (en) * | 2019-04-30 | 2019-08-02 | 江苏大学 | A kind of g-C3N4The bionical construction method and application thereof of/BiOI-pDA@PVDF photocatalysis membrana |
| CN111229282A (en) * | 2020-03-04 | 2020-06-05 | 中国科学院生态环境研究中心 | Nonmetal PI-g-C3N4Fiber membrane photocatalyst and preparation method thereof |
| CN113399002A (en) * | 2021-05-31 | 2021-09-17 | 南京林业大学 | Photocatalytic nanofiber membrane for dye degradation and preparation method thereof |
| CN113908855A (en) * | 2021-10-18 | 2022-01-11 | 四川大学 | Preparation method of supported porous photocatalytic fiber membrane |
| CN114797985A (en) * | 2022-03-25 | 2022-07-29 | 哈尔滨工程大学 | Flexible and recyclable C 3 N 4 ZIF-8 composite nanofiber photocatalytic film and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| TAMER T. EL-IDREESY ET AL.: ""Synthesis and Characterization of Pyrylogens Possessing Low Excitation Energies – Substituent Modification in Order to Improve Solar Energy Collection"" * |
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