CN110002414A - A kind of preparation method of nitride porous carbon nanotube - Google Patents
A kind of preparation method of nitride porous carbon nanotube Download PDFInfo
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- CN110002414A CN110002414A CN201910220874.0A CN201910220874A CN110002414A CN 110002414 A CN110002414 A CN 110002414A CN 201910220874 A CN201910220874 A CN 201910220874A CN 110002414 A CN110002414 A CN 110002414A
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- carbon nanotube
- presoma
- supermolecule
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 150000004767 nitrides Chemical class 0.000 title claims abstract description 38
- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 37
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 45
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 29
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 9
- 238000005406 washing Methods 0.000 claims abstract description 7
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 36
- 229910052799 carbon Inorganic materials 0.000 claims description 25
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 15
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- 238000003756 stirring Methods 0.000 claims description 14
- 229920000877 Melamine resin Polymers 0.000 claims description 12
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 12
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 8
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- 238000006731 degradation reaction Methods 0.000 claims description 4
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 4
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- BNWPUUZJGBXAFM-UHFFFAOYSA-N azane oxalonitrile Chemical compound N.N#CC#N BNWPUUZJGBXAFM-UHFFFAOYSA-N 0.000 claims description 3
- 239000002957 persistent organic pollutant Substances 0.000 claims description 3
- 239000011941 photocatalyst Substances 0.000 claims description 3
- 239000002243 precursor Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
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- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 abstract description 19
- 230000001699 photocatalysis Effects 0.000 abstract description 14
- 229910002804 graphite Inorganic materials 0.000 abstract description 13
- 239000010439 graphite Substances 0.000 abstract description 13
- 238000007146 photocatalysis Methods 0.000 abstract description 13
- 239000002071 nanotube Substances 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 4
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- 238000006243 chemical reaction Methods 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
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- 238000006068 polycondensation reaction Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000001338 self-assembly Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 238000004108 freeze drying Methods 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- 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 2
- 229940043267 rhodamine b Drugs 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- FIDRAVVQGKNYQK-UHFFFAOYSA-N 1,2,3,4-tetrahydrotriazine Chemical group C1NNNC=C1 FIDRAVVQGKNYQK-UHFFFAOYSA-N 0.000 description 1
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- KVBCYCWRDBDGBG-UHFFFAOYSA-N azane;dihydrofluoride Chemical compound [NH4+].F.[F-] KVBCYCWRDBDGBG-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229910052571 earthenware Inorganic materials 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012456 homogeneous solution Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000002127 nanobelt Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000002077 nanosphere Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 230000015843 photosynthesis, light reaction Effects 0.000 description 1
- 125000004193 piperazinyl group Chemical group 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- 150000003839 salts Chemical class 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
-
- B01J35/39—
-
- B01J35/40—
-
- B01J35/61—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
- C01B21/0605—Binary compounds of nitrogen with carbon
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
- C01P2004/13—Nanotubes
Abstract
The invention discloses a kind of preparation methods of nitride porous carbon nanotube, preparation process includes: using nitrogen-rich organic object as raw material, the supermolecule presoma being scattered in mixed liquor is obtained after acidified hydro-thermal process, it will be put into alumina crucible with cover after supermolecule presoma mixed liquor washing and drying, crucible is placed in Muffle furnace furnace chamber center, obtains nitride porous carbon nanotube through high-temperature process.The diameter of nanotube is about 3-8 μm, and surface is dispersed with many micropores.It is this porous tubular structured effectively to increase its specific surface area, more active sites are provided, the quick separating of photo-generated carrier is conducive to and improve the utilization rate to visible light compared to body phase graphite phase carbon nitride.This nitride porous carbon nanotube shows excellent photocatalysis performance under the conditions of radiation of visible light.Cost of material involved in this method is cheap and experimental implementation is simple, can be applied to the nitride porous carbon nanotube that extensive actual production preparation has excellent photocatalysis performance.
Description
Technical field
The invention belongs to the technology of preparing scope of graphite phase carbon nitride, and in particular to a kind of high efficiency photocatalyst that can be used for
The preparation method of nitride porous carbon nanotube.
Background technique
With the development of industrialization and urbanization, the problems such as environmental pollution and energy crisis, becomes increasingly conspicuous.How effectively
Using this green resource of solar energy, goes to solve environment and energy problem has become the hot spot of today's society.Conductor photocatalysis
The development of technology is that the solution of the above problem brings new hope.A kind of polymerization of the graphite phase carbon nitride as not metallic components
Object semiconductor material is urged by its stable physical and chemical performance, unique band structure, good biocompatibility and light
Change activity, it is made to be with a wide range of applications in fields such as photocatalysis, bio-imaging, sensors.
Currently, the main method of synthesis carbonitride has solvent-thermal method, electrochemical deposition method, magnetron sputtering method and thermal polycondensation process
Deng.Solvent-thermal method has many advantages, such as that synthesis condition is relatively mild, and nitrogen not easily runs off.But the crystallinity of obtained graphite phase carbon nitride
It is universal poor, and some toxic organic solvents are generally involved in reaction process, it is harmful to environment and experimenter.Electrification
It learns sedimentation to be generally used to prepare carbon nitride films or coating, obtained carbon nitride films are generally polycrystalline or amorphous state, uncomfortable
It shares to prepare nitridation toner body.Magnetron sputtering method is also a kind of method for preparing carbon nitride films, but product is generally
Polycrystalline coexistence state, and this method is higher to the purity requirement of target and reaction gas.Thermal polycondensation process is a kind of common system
The method of standby graphite phase carbon nitride has many advantages, such as that reaction process is direct, easy, at low cost and no pollution to the environment.However,
It is mostly body phase graphite phase carbon nitride by the product that thermal polycondensation nitrogen-rich organic object obtains, surface area is low, active site is few,
The disadvantages of photo-generated carrier recombination rate is high seriously limits the photocatalysis performance of product.Therefore, in order to improve graphite phase carbon nitride
Photocatalysis performance, researchers propose various improved methods, for example, element doping, with other semiconductors couplings, expensive
Metal surface deposition, fuel sensitization, and two-dimentional azotized carbon nano piece etc. is obtained by removing body phase carbon nitride.Above-mentioned modification side
Although method can improve its photocatalysis performance to a certain extent, general promotion effect is limited.In addition, above-mentioned experimentation one
As complicated for operation, the problems such as use of some metal salts can bring environmental pollution, and the addition of expensive noble metal
Seriously limit its large-scale practical application.
It is well known that the microscopic appearance of graphite phase carbon nitride plays vital work during light-catalyzed reaction
With.For example, the graphite phase carbon nitride with microscopic appearances structures such as nanosphere, nanotube, nanobelt and nanometer rods, light are urged
Change performance to be all significantly improved compared to body phase graphite phase carbon nitride.Correlative study shows that porous tubular structured carbonitride exists
Photocatalysis field possesses potential huge application prospect.Since it is with special one-dimensional porous tubular structured, photo-generated carrier
It can be along its radial dimension direction quick separating；Multiple reflections can occur in the inside of pipe with the time, therefore be also beneficial to
Improve the utilization rate of visible light.In addition, this porous tubular structured increase for facilitating its specific surface area and offer are more urged
Change active site, the advantage in these structures all will be helpful to the promotion of its photocatalysis performance.
The method for usually preparing azotized carbon nano pipe mainly has template, for example, king Xinchen, University of Fuzhou et al. is with cyanamide
Predecessor and Silica Nanotube be template prepare azotized carbon nano pipe (imaging science and photochemistry 2015,33 (5):
417-425).However, the experimental implementation is cumbersome, the period is longer, due to introducing template in reaction process, it is therefore desirable to react
After, using toxic and have the reagents such as corrosive ammonium acid fluoride to remove removing template, therefore not enough environmental protection is friendly.
Numerator self-assembly technique is a kind of method of rising in recent years, is widely used in the microscopic appearance tune of nano material
Control.Raw molecule aggregates into supermolecule presoma under the action of hydrogen bond, since hydrogen bond has directionality and saturability,
To supermolecule presoma generally also there is specific microstructure.By directly being heat-treated to obtain to supermolecule presoma
Product generally also there is corresponding pattern.It is received currently, having there is scientist to prepare carbonitride by molecular self-assembling method
Mitron.Zou Zhigang academician such as Kunshan innovation research institute, Nanjing University et al. (Zhou Yong, Gao Jun, Zou Zhigang, a kind of self assembly nitridation
The preparation method of carbon nanotube and nanotube obtained by this method, publication number: CN102616757A) pass through self-assembling method
Obtain azotized carbon nano pipe.But the general obtained azotized carbon nano pipe of molecular self-assembling method does not all have porous structure, because
And also affect further increasing for its photocatalysis performance.
Summary of the invention
The problem to be solved in the present invention is: being directed to photocatalysis degradation organic contaminant, the neck such as photolysis water hydrogen, bio-imaging
The application demand in domain provides a kind of simple, effective method, prepares the nitride porous carbon nanometer with excellent photocatalytic activity
Pipe.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of preparation method of nitride porous carbon nanotube, its main feature is that preparation process includes: with nitrogen-rich organic powder
For raw material, the supermolecule presoma being scattered in mixed liquor is obtained after phosphoric acid and hydro-thermal process, by supermolecule forerunner
It is put into alumina crucible with cover after body mixed liquor washing and drying, crucible is then placed in Muffle furnace furnace chamber center, through height
Temperature processing, obtains nitride porous carbon nanotube.
Further, the nitrogen-rich organic object is one in melamine, dicyandiamide, thiocarbamide, cyanogen ammonia and cyanuric acid
Kind is several.
Further, it is 0.25 that the phosphoric acid process, which is by 1~3g nitrogen-rich organic powder addition 60mL concentration,
In the phosphoric acid solution of~1.0mol/L, stirring 10min obtains finely dispersed mixed liquor.
Further, the hydrothermal treatment process is that the mixed liquor that will be stirred evenly is transferred to 100mL pyroreaction kettle
In, 4~8h of hydro-thermal under the conditions of 160~180 DEG C, then cooled to room temperature is to get to the oversubscription being scattered in mixed liquor
Sub- presoma.
Further, the washing and drying process of the supermolecule presoma mixed liquor is more first with deionized water washing
It is secondary, until the ph value of mixture after last time is washed is neutrality, mixed liquor is dried under the conditions of 60 DEG C then and is surpassed
Molecular precursor.
Further, the high-temperature process is that supermolecule presoma is placed in Muffle furnace, with the liter of 3 DEG C/min
Warm rate keeps the temperature 4h after being warming up to 520~550 DEG C, the faint yellow collection of products that then will be obtained after cooled to room temperature, i.e.,
Obtain nitride porous carbon nanotube.
Its purposes of nitride porous carbon nanotube prepared according to the method described above is to prepare photochemical catalyst, specifically can be used as height
It imitates photochemical catalyst and is applied to light degradation organic pollutant field.
Having the beneficial effect that by adopting the above technical scheme:
(1) raw material is only the melamine and phosphoric acid of low cost, without using organic solvent or protective gas etc. it is expensive or
Environmentally harmful reagent.
(2) experimentation is simple, easy to operate.
(3) products pure does not introduce catalyst, template and substrate etc. in synthesis, greatly reduces the content of impurity,
Advantageously reduce influence of the impurity component to target product structure, property.
(4) product nitride porous carbon nanotube has excellent and stable photocatalysis performance.
Detailed description of the invention
Fig. 1 is the X-ray diffracting spectrum of 1 products therefrom of embodiment.
Fig. 2 is the scanning electron microscope image of 1 products therefrom of embodiment.
Fig. 3 is the photocatalytic degradation organic contamination of embodiment 1 products therefrom nitride porous carbon nanotube and body phase carbon nitride
Object rhodamine B effect contrast figure.
Specific embodiment
Below by specific embodiment, a kind of preparation method of nitride porous carbon nanotube of the present invention is made further detailed
Thin description.
1 template of comparative example prepares azotized carbon nano pipe
The main method for preparing azotized carbon nano pipe at present is template, such as Chinese patent, publication number
CN107986247A (a kind of preparation method of graphite phase carbon nitride nanotube), this method is using aperture in 10~200nm range
Interior aluminium oxide is template, and alumina formwork is placed in above presoma, first passes through the low-temp reaction stage (100~200 DEG C) and makes
Presoma deposits in aluminium oxide duct, and then pyroreaction is pyrolyzed presoma inside aluminium oxide duct, most
Removing alumina formwork, which is handled, with acid afterwards obtains final azotized carbon nano pipe.This preparation process is drawn due to alumina formwork
Enter, subsequent removal template procedure is cumbersome, it is also possible to cause template that cannot completely remove clean and introduce in final product
Foreign ion.And only cold stage is just up to 10h and factor that can not ignore for the reaction.
In addition, Chinese patent, publication number CN105217584A (a kind of preparation method of azotized carbon nano pipe), this method benefit
With ethyl orthosilicate, in-situ hydrolysis obtains silica spheres in alkaline alcohol solution, and as template, synthesis obtains carbonitride
Nanotube.This method operating procedure is complicated, is difficult to control.Hydrolytic process condition is harsh, if control is improper will to directly affect dioxy
The size and microscopic appearance of SiClx ball, and then influence the microscopic appearance of product.It is subsequent go in template procedure to have used severe toxicity and
Mordant hydrofluoric acid to environment nocuousness, therefore also limits its large-scale practical application.
2 freeze-drying of comparative example prepares azotized carbon nano pipe
Chinese patent, publication number CN105883732A (a kind of azotized carbon nano pipe and preparation method thereof) is first by urea and carbon
Sour hydrogen sodium is made into homogeneous solution according to a certain percentage, it is then freezed white derived above for 24 hours under the conditions of -20~-80 DEG C
Blocks of solid.By white clumpy solid fast transfer into true hole freeze drying chamber, in true cell size≤above obtain white, cryogenic temperature
It is freeze-dried 20h white chunks object derived above under the conditions of≤freezing temperature DEG C, by white chunks object in nitrogen atmosphere stove
Calcining obtains pale yellow powder sample, and faint yellow sample is finally placed in free from admixture water standing 12h or more, then dialyses about 1~3
It, obtains azotized carbon nano pipe after dry.Although azotized carbon nano pipe can be prepared in this method, operate excessively cumbersome, real
Test condition harshness the high requirements on the equipment.In addition, entire experimental period is too long, production efficiency is seriously affected.
3 self-assembling method of comparative example prepares azotized carbon nano pipe
Chinese patent, a kind of CN102616757A (preparation method of self assembly azotized carbon nano pipe and by party's legal system
The nanotube obtained), melamine is dissolved in ethylene glycol forms saturated solution first by this method, is then added thereto
0.12mol/L nitric acid solution obtains a large amount of white precipitates, drying is washed with ethyl alcohol after obtained white precipitate is collected, after heating
Obtain azotized carbon nano pipe.However this method is needed during preparing azotized carbon nano pipe using plurality of raw materials and organic examination
Agent, the precipitation rate of white precipitate are difficult to control, and due under room temperature solubility of the melamine in ethylene glycol it is smaller, because
This is unfavorable for large batch of preparing azotized carbon nano pipe.Furthermore the obtained azotized carbon nano pipe of general molecular self-assembling method is all
Without porous structure, further increasing for photocatalysis performance is also limited.
Embodiment 1
1g melamine is put into the phosphoric acid solution that 60mL concentration is 0.25mol/L, stirring 10min divides it uniformly
It dissipates, is subsequently transferred in 100mL pyroreaction kettle and the hydro-thermal 4h at 160 DEG C, be scattered in its cooled to room temperature
Supermolecule presoma mixed liquor is washed with deionized water repeatedly supermolecule presoma in mixed liquor, until last time mixed liquor
It is then dry under the conditions of 60 DEG C until pH value is neutral；Supermolecule presoma after drying is put into aluminium oxide earthenware with cover
In crucible, it is placed in Muffle furnace furnace chamber center, 550 DEG C is to slowly warm up to the heating rate of 3 DEG C/min and keeps the temperature 4h, to nature
It is cooled to room temperature, nitride porous carbon nanotube can be obtained.
Using X-ray diffracting spectrum, scanning electron microscope and transmission electron microscope etc., structure and shape are carried out to obtained powdered product
Looks characterization, it was demonstrated that product is the graphite phase carbon nitride with perforated tubular, and products pure.
Fig. 1 is the X-ray diffracting spectrum of products therefrom, and (100) diffraction occur in 13.1 figure left-right positions in figure
Peak, corresponding is carbonitride duplicate seven piperazines ring element structure in the same plane, it is understood that repeat in 5-triazine units
Distance between the adjacent hole N.It offs normal to set 27.4 and apparent (002) diffraction maximum has occurred, be that the interlayer accumulation of aromatic substance is special
Levy peak, it was demonstrated that product is the layer structure carbonitride with similar graphite.
Fig. 2 is the stereoscan photograph of products therefrom, and the product that can see synthesis in figure is essentially nitride porous carbon and receives
Mitron, length are 3-8 product, and diameter is mostly 500nm or so, and pattern is uniform.
Fig. 3 be product nitride porous carbon nanotube and body phase carbon nitride under the conditions of radiation of visible light to organic pollutant sieve
The degradation rate curve of red bright B, should be apparent that nitride porous carbon nanotube is obvious to the photocatalytic degradation efficiency of rhodamine B
Better than body phase carbon nitride.
Embodiment 2
1g melamine being put into the phosphoric acid solution that 60mL concentration is 0.5mol/L, stirring 10min keeps its evenly dispersed,
It is subsequently transferred in 100mL pyroreaction kettle and the hydro-thermal 4h at 160 DEG C, to its cooled to room temperature；Collected by suction obtains
Supermolecule presoma is washed with deionized water repeatedly supermolecule presoma, until last time ph value of mixture is neutral, so
It is dry under the conditions of 60 DEG C afterwards；Supermolecule presoma after drying is put into alumina crucible with cover, Muffle furnace furnace is placed in
Chamber center is to slowly warm up to 550 DEG C with the heating rate of 3 DEG C/min and keeps the temperature 4h, after naturally cool to room temperature, can obtain
To nitride porous carbon nanotube.
Embodiment 3
1g melamine being put into the phosphoric acid solution that 60mL concentration is 1.0mol/L, stirring 10min keeps its evenly dispersed,
It is subsequently transferred in 100mL pyroreaction kettle and the hydro-thermal 4h at 170 DEG C, to its cooled to room temperature；Collected by suction obtains
Supermolecule presoma is washed with deionized water repeatedly supermolecule presoma, until last time ph value of mixture is neutral, so
It is dry under the conditions of 60 DEG C afterwards；Supermolecule presoma after drying is put into alumina crucible with cover, Muffle furnace furnace is placed in
Chamber center is to slowly warm up to 520 DEG C with the heating rate of 3 DEG C/min and keeps the temperature 4h, after naturally cool to room temperature, can obtain
To nitride porous carbon nanotube.
Embodiment 4
1g melamine is put into the phosphoric acid solution that 60mL concentration is 0.25mol/L, stirring 10min divides it uniformly
It dissipates, is subsequently transferred in 100mL pyroreaction kettle and the hydro-thermal 8h at 180 DEG C, to its cooled to room temperature；Collected by suction obtains
To supermolecule presoma, supermolecule presoma is washed with deionized water repeatedly, until last time ph value of mixture is neutral,
Then dry under the conditions of 60 DEG C；Supermolecule presoma after drying is put into alumina crucible with cover, Muffle furnace is placed in
Furnace chamber center is to slowly warm up to 550 DEG C with the heating rate of 3 DEG C/min and keeps the temperature 4h, after naturally cool to room temperature
Obtain nitride porous carbon nanotube.
Embodiment 5
2g melamine is put into the phosphoric acid solution that 60mL concentration is 0.25mol/L, stirring 10min divides it uniformly
It dissipates, is subsequently transferred in 100mL pyroreaction kettle and the hydro-thermal 4h at 160 DEG C, to its cooled to room temperature；Collected by suction obtains
To supermolecule presoma, supermolecule presoma is washed with deionized water repeatedly, until last time ph value of mixture is neutral,
Then dry under the conditions of 60 DEG C；Supermolecule presoma after drying is put into alumina crucible with cover, Muffle furnace is placed in
Furnace chamber center is to slowly warm up to 520 DEG C with the heating rate of 3 DEG C/min and keeps the temperature 4h, after naturally cool to room temperature
Obtain nitride porous carbon nanotube.
Embodiment 6
3g melamine is put into the phosphoric acid solution that 60mL concentration is 0.25mol/L, stirring 10min divides it uniformly
It dissipates, is subsequently transferred in 100mL pyroreaction kettle and the hydro-thermal 6h at 170 DEG C, to its cooled to room temperature；Collected by suction obtains
To supermolecule presoma, supermolecule presoma is washed with deionized water repeatedly, until last time ph value of mixture is neutral,
Then dry under the conditions of 60 DEG C；Supermolecule presoma after drying is put into alumina crucible with cover, Muffle furnace is placed in
Furnace chamber center is to slowly warm up to 550 DEG C with the heating rate of 3 DEG C/min and keeps the temperature 4h, after naturally cool to room temperature
Obtain nitride porous carbon nanotube.
Embodiment 7
1g dicyandiamide being put into the phosphoric acid solution that 60mL concentration is 0.25mol/L, stirring 10min keeps its evenly dispersed,
It is subsequently transferred in 100mL pyroreaction kettle and the hydro-thermal 4h at 160 DEG C, to its cooled to room temperature；Collected by suction obtains
Supermolecule presoma is washed with deionized water repeatedly supermolecule presoma, until last time ph value of mixture is neutral, so
It is dry under the conditions of 60 DEG C afterwards；Supermolecule presoma after drying is put into alumina crucible with cover, Muffle furnace furnace is placed in
Chamber center is to slowly warm up to 550 DEG C with the heating rate of 3 DEG C/min and keeps the temperature 4h, after naturally cool to room temperature, can obtain
To nitride porous carbon nanotube.
Embodiment 8
1g thiocarbamide being put into the phosphoric acid solution that 60mL concentration is 0.25mol/L, stirring 10min keeps its evenly dispersed, with
After be transferred in 100mL pyroreaction kettle and the hydro-thermal 4h at 160 DEG C, to its cooled to room temperature；Collected by suction is surpassed
Supermolecule presoma is washed with deionized water repeatedly molecular precursor, until last time ph value of mixture is neutral, then
It is dry under the conditions of 60 DEG C；Supermolecule presoma after drying is put into alumina crucible with cover, Muffle furnace furnace chamber is placed in
Center is to slowly warm up to 550 DEG C with the heating rate of 3 DEG C/min and keeps the temperature 4h, after naturally cool to room temperature, can be obtained
Nitride porous carbon nanotube.
Embodiment 9
1g cyanogen ammonia is put into the phosphoric acid solution that 60mL concentration is 0.5mol/L, stirring 10min keeps its evenly dispersed, then
It is transferred in 100mL pyroreaction kettle and the hydro-thermal 4h at 180 DEG C, to its cooled to room temperature；Collected by suction obtains oversubscription
Supermolecule presoma is washed with deionized water repeatedly sub- presoma, until last time ph value of mixture is neutral, then exists
It is dry under the conditions of 60 DEG C；Supermolecule presoma after drying is put into alumina crucible with cover, is placed in Muffle furnace furnace chamber
Heart position is to slowly warm up to 550 DEG C with the heating rate of 3 DEG C/min and keeps the temperature 4h, after naturally cool to room temperature, can be obtained more
Hole azotized carbon nano pipe.
Embodiment 10
3g cyanuric acid is put into the phosphoric acid solution that 60mL concentration is 0.25mol/L, stirring 10min divides it uniformly
It dissipates, is subsequently transferred in 100mL pyroreaction kettle and the hydro-thermal 6h at 160 DEG C, to its cooled to room temperature；Collected by suction obtains
To supermolecule presoma, supermolecule presoma is washed with deionized water repeatedly, until last time ph value of mixture is neutral,
Then dry under the conditions of 60 DEG C；Supermolecule presoma after drying is put into alumina crucible with cover, Muffle furnace is placed in
Furnace chamber center is to slowly warm up to 550 DEG C with the heating rate of 3 DEG C/min and keeps the temperature 4h, after naturally cool to room temperature
Obtain nitride porous carbon nanotube.
Embodiment 11
1g melamine and 1g cyanuric acid are put into the phosphoric acid solution that 60mL concentration is 0.25mol/L, stir 10min
Keep its evenly dispersed, be subsequently transferred in 100mL pyroreaction kettle and the hydro-thermal 4h at 180 DEG C, to its cooled to room temperature；
Collected by suction obtains supermolecule presoma, and supermolecule presoma is washed with deionized water repeatedly, until last time ph value of mixture
It is then dry under the conditions of 60 DEG C until for neutrality；Supermolecule presoma after drying is put into alumina crucible with cover,
It is placed in Muffle furnace furnace chamber center, be to slowly warm up to 550 DEG C with the heating rate of 3 DEG C/min and keeps the temperature 4h, to natural cooling
To room temperature, nitride porous carbon nanotube can be obtained.
Embodiment 12
1g dicyandiamide and 2g thiocarbamide are put into the phosphoric acid solution that 60mL concentration is 1.0mol/L, stirring 10min makes it
Even dispersion, is subsequently transferred in 100mL pyroreaction kettle and the hydro-thermal 8h at 160 DEG C, to its cooled to room temperature；It filters and receives
Collection obtains supermolecule presoma, and supermolecule presoma is washed with deionized water repeatedly, until last time ph value of mixture is neutrality
Until, it is then dry under the conditions of 60 DEG C；Supermolecule presoma after drying is put into alumina crucible with cover, horse is placed in
Not furnace furnace chamber center is to slowly warm up to 550 DEG C with the heating rate of 3 DEG C/min and keeps the temperature 4h, after naturally cool to room temperature,
Nitride porous carbon nanotube can be obtained.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of preparation method of nitride porous carbon nanotube, it is characterised in that preparation process includes: with nitrogen-rich organic object for original
Expect, obtains being scattered in the supermolecule presoma in mixed liquor after acidified hydro-thermal process, by supermolecule presoma mixed liquor
It is put into after washing and drying in alumina crucible with cover, crucible is then placed in Muffle furnace furnace chamber center, after high-temperature process
Obtain nitride porous carbon nanotube.
2. a kind of preparation method of nitride porous carbon nanotube according to claim 1, it is characterised in that: the richness nitrogen has
Machine object is one or more of melamine, dicyandiamide, thiocarbamide, cyanogen ammonia and cyanuric acid.
3. a kind of preparation method of nitride porous carbon nanotube according to claim 1 or 2, it is characterised in that: described
Phosphoric acid process is to be by 1~3g nitrogen-rich organic powder addition 60mL concentration in the phosphoric acid solution of 0.25~1.0mol/L,
Stirring 10min obtains finely dispersed mixed liquor.
4. a kind of nitride porous preparation method of carbon nano-tube according to claim 1 or 2, it is characterised in that: the water
Heat treatment process is that the mixed liquor that will be stirred evenly is transferred in 100mL pyroreaction kettle, the hydro-thermal 4 under the conditions of 160~180 DEG C
~8h, then cooled to room temperature is to get to the supermolecule presoma being scattered in mixed liquor.
5. a kind of nitride porous preparation method of carbon nano-tube according to claim 1 or 2, it is characterised in that: described is super
The washing and drying process of molecular precursor mixed liquor is to wash first with deionized water repeatedly, until mixing after last time washing
Closing liquid pH value is neutrality, then dries mixed liquor under the conditions of 60 DEG C and obtains supermolecule presoma.
6. a kind of nitride porous preparation method of carbon nano-tube according to claim 1 or 2, it is characterised in that: the height
Temperature processing is that supermolecule presoma is placed in Muffle furnace, is kept the temperature after being warming up to 520~550 DEG C with the heating rate of 3 DEG C/min
4h, then after cooled to room temperature by obtained faint yellow collection of products to get to can be used as the porous of high efficiency photocatalyst
Azotized carbon nano pipe.
7. a kind of nitride porous carbon nanotube according to the preparation of any one of such as claim 1-6 the method is in photochemical catalyst
Purposes, a kind of nitride porous carbon nanotube prepared according to such as claim 1-6 the method, can be used as high efficiency photocatalyst and
Applied to light degradation organic pollutant field.
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