CN107879379A - Preparation method of carbon coating ferric oxide nano pipe and products thereof and application - Google Patents
Preparation method of carbon coating ferric oxide nano pipe and products thereof and application Download PDFInfo
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- CN107879379A CN107879379A CN201711086340.0A CN201711086340A CN107879379A CN 107879379 A CN107879379 A CN 107879379A CN 201711086340 A CN201711086340 A CN 201711086340A CN 107879379 A CN107879379 A CN 107879379A
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- carbon coating
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- nano pipe
- ferric oxide
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 48
- 238000000576 coating method Methods 0.000 title claims abstract description 40
- 239000011248 coating agent Substances 0.000 title claims abstract description 39
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title claims abstract description 29
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 17
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims abstract description 11
- 229930006000 Sucrose Natural products 0.000 claims abstract description 11
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims abstract description 11
- 235000019837 monoammonium phosphate Nutrition 0.000 claims abstract description 11
- 239000005720 sucrose Substances 0.000 claims abstract description 11
- 238000005516 engineering process Methods 0.000 claims abstract description 10
- 230000005291 magnetic effect Effects 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 8
- 238000013019 agitation Methods 0.000 claims abstract description 7
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical class [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 6
- 239000010935 stainless steel Substances 0.000 claims abstract description 6
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical group [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 6
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 6
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical group [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims description 4
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 4
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 4
- 235000011151 potassium sulphates Nutrition 0.000 claims description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims description 2
- 239000002250 absorbent Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 239000011258 core-shell material Substances 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 239000002071 nanotube Substances 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000001241 arc-discharge method Methods 0.000 description 1
- 238000005899 aromatization reaction Methods 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
- 238000003763 carbonization Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000005446 dissolved organic matter Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- ZKEYULQFFYBZBG-UHFFFAOYSA-N lanthanum carbide Chemical compound [La].[C-]#[C] ZKEYULQFFYBZBG-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide [Fe2O3]
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/009—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked
-
- 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
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Textile Engineering (AREA)
- Electromagnetism (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Compounds Of Iron (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention provides a kind of preparation method of carbon coating ferric oxide nano pipe and products thereof and application, soluble ferric iron salt, sulfate, ammonium dihydrogen phosphate and sucrose are configured to solution, magnetic agitation certain time by finite concentration；Solution is transferred to stainless steel cauldron, regulation temperature, pressure, carbon coating ferric oxide nano pipe is prepared using supercritical methanol technology reaction certain time.Preparation method is simple, effectively reduces the flow of carbon coating technique, and the simultaneous reactions time is short, and temperature is low, the process of easily controllable reaction.Using the inventive method efficiently, be quickly prepared for carbon coating ferric oxide nano pipe, the material possesses the core shell structure and peculiar electricity, magnetics, optics and mechanical property of uniqueness, thus is expected to be widely applied to the fields such as catalyst, battery material and wave shield material.
Description
Technical field
The present invention relates to field of material preparation, specially a kind of preparation method of carbon coating ferric oxide nano pipe and products thereof
And application.
Background technology
Since 1993 find the structure of carbon-coated nano lanthanum carbide first in arc evaporation graphite cigarette ash, carbon coating
Nano material has turned into one of study hotspot of world wide clinical practice worker with its unique morphosis and property, as
A kind of new type functional composite, has a wide range of applications in many fields.Due to the presence of carbon shell, environment can be avoided
Influence to nano material, while be expected to improve the compatibility between some materials and organism, thus have in terms of medical science
Wide application prospect.
At present, the main preparation methods of Carbon en capsulated nanomaterials have arc discharge method, chemical vapour deposition technique, pyrolysismethod,
Liquid-phase impregnation process and explosion method etc..Carbon coating processing is carried out by raw material of organic matter, undergoes carbonisation.Organic matter is in indifferent gas
When being heated to higher temperature under atmosphere, the constituent content such as a series of chemical reaction, contained H, O, N will occur and constantly reduce, carbon
Constantly enrichment, ultimately forms pure carbon.In general, in generation low molecular compound（Such as CO, CO2、H2O, alcohol and a small amount of tar）'s
Meanwhile also there occurs the condensation of aromatisation and aromatic rings, polymerization process.The reaction of this two class is often overlapped or intersects progress, its
Process depends on the composition structure and environmental condition of raw material.In the temperature range that carbon coating is commonly used（600~800℃）It is interior, these carbon
Orderly graphite-structure will not be formed, is generally existed with amorphous form.
The critical-temperature of water is 374.2 DEG C, and pressure is 22.12 MPa.When temperature and pressure is above critical point, it is referred to as
Super critical condition.Temperature or pressure have one to be less than critical point, referred to as undercritical conditions.It is overcritical compared with the water under normality
The change of properties of water is huge.In supercritical water reaction, as temperature raises, dielectric constant and the viscosity of water reduce, dissolubility
Level off to organic solvent, and diffusion coefficient, mass transfer performances level off to high-temperature gas.This viscosity, dielectric constant, diffusion coefficient and molten
The change of solution ability is that the water under supercriticality turns into good solvent, can effectively dissolved organic matter and gas etc., make reaction
Carried out in homogeneous, improve the speed of reaction.
In view of currently used carbon coating method is complicated, flow is more, is unfavorable for extensive use.It is necessary to propose new technology side
Case.
The content of the invention
For overcome the deficiencies in the prior art, present invention aims at：It is proposed a kind of system of carbon coating ferric oxide nano pipe
Preparation Method.
Still a further object of the present invention is：Carbon coating ferric oxide nano pipe product prepared by the above method is provided.
Another object of the present invention is：The application of the said goods is provided.
The object of the invention is realized by following proposal：It is comprised the following steps that：A kind of system of carbon coating ferric oxide nano pipe
Preparation Method, comprise the following steps：
（1）Soluble ferric iron salt, sulfate, ammonium dihydrogen phosphate and sucrose are configured to solution by finite concentration, magnetic agitation is certain
Time；
（2）By step（1）Middle solution is transferred to stainless steel cauldron, regulation temperature, pressure, using the timing of supercritical methanol technology reaction one
Between carbon coating ferric oxide nano pipe is prepared.
Carbon coating ferric oxide nano pipe is prepared with the step of supercritical methanol technology one in the present invention, and method is simple, effectively reduces carbon
The flow of cladding process, the simultaneous reactions time is short, and temperature is low, the process of easily controllable reaction.
Wherein, step（1）Middle soluble ferric iron salt is iron chloride or ferric nitrate, and the concentration of soluble ferric iron salt in the solution is
0.08~0.1 mol/L；Sulfate is sodium sulphate or potassium sulfate, and the concentration formed added to solution is 6.0 × 10-4~1.0×10-3 mol/L；It is 6.0 × 10 that ammonium dihydrogen phosphate, which is added in solution the concentration formed,-4~1.0×10-3 mol/L；Sucrose is added to
The quality of solution is the 1% ~ 5% of molysite, and magnetic agitation speed is 100 ~ 1000 rpm, and mixing time is 0.5 ~ 5 hour.
Step（2）Reaction temperature prepared by middle supercritical methanol technology is 120 ~ 150 DEG C, and pressure is 5 ~ 40 MPa, and the time is 0.5 ~ 6
Hour.
The present invention provides a kind of carbon coating ferric oxide nano pipe, is prepared according to any of the above-described methods described.
The present invention is also provided a kind of carbon coating ferric oxide nano pipe obtained using the inventive method and can be widely applied to urge
Agent, battery material and electromagnetic shielding material field.Especially as the application of electromagnetic wave absorbent material.
The present invention compared with prior art, there is following benefit：（1）Technological process is few, and overcritical one-step method can obtain carbon
Coated iron oxide nanotube；（2）Reaction temperature is low, and the time is short, reduces energy loss, improves preparation efficiency；（3）To composite
Pattern control is more preferable, and carbon coating is evenly.
Brief description of the drawings
Fig. 1 is that the SEM of carbon coating ferric oxide nano pipe schemes.
Fig. 2 is that the TEM of carbon coating ferric oxide nano pipe schemes.
Fig. 3 is the electro-magnetic wave absorption performance figure of carbon coating ferric oxide nano pipe.
Embodiment
The embodiment of the present invention is explained with reference to embodiment, but the present invention can be with a lot
Implement different from other modes described here, therefore the present invention is not limited to the specific embodiments disclosed below.
Embodiment 1
Iron chloride, sodium sulphate, ammonium dihydrogen phosphate and sucrose are configured to solution by finite concentration, the wherein concentration of molysite is 0.08
Mol/L, the concentration of sulfate is 8.0 × 10-4 Mol/L, the concentration of ammonium dihydrogen phosphate is 6.0 × 10-4 Mol/L, sucrose add
Add 1% that quality is molysite, magnetic agitation speed is 1000 rpm, and mixing time is 0.5 hour；
The solution of above-mentioned preparation is transferred to stainless steel cauldron, carbon coating oxidation is prepared using supercritical methanol technology reaction certain time
Iron nanotube, specific reaction temperature are 120 DEG C, and pressure is 40 MPa, and the time is 6 hours, and washing, drying obtain carbon coating oxidation
Iron nanotube.Fig. 1 be carbon coating ferric oxide nano pipe SEM figure and
Fig. 2 is that the TEM of carbon coating ferric oxide nano pipe schemes.More preferable to the control of composite pattern, carbon coating is evenly
Obtained carbon coating ferric oxide nano pipe and solid paraffin are pressed into mass fraction 10:90 uniformly mixing, on particular manufacturing craft
The mm of external diameter 7.00, the mm of internal diameter 3.04, the mm of thickness 2.0 coaxial sample are pressed into, with model HP722ES vector networks point
Analyzer tests its absorbing property in 1-18 gigahertz frequency ranges.When the matching thickness of sample is 2.6 mm, 14.77
Reach the dB of minimum reflectance -20.73, corresponding RL at GHz<- 10 dB frequency range is 12.4 ~ 18 GHz, and bin width reaches
5.6 GHz, as shown in Figure 3.
Embodiment 2
Ferric nitrate, potassium sulfate, ammonium dihydrogen phosphate and sucrose are configured to solution by finite concentration, the wherein concentration of molysite is 0.1
Mol/L, the concentration of sulfate is 1.0 × 10-3 Mol/L, the concentration of ammonium dihydrogen phosphate is 1.0 × 10-3 Mol/L, sucrose add
Add 5% that quality is molysite, magnetic agitation speed is 800 rpm, and mixing time is 5 hours；
The solution of above-mentioned preparation is transferred to stainless steel cauldron, carbon coating oxidation is prepared using supercritical methanol technology reaction certain time
Iron nanotube, specific reaction temperature are 130 DEG C, and pressure is 5 MPa, and the time is 5 hours, and washing, drying obtain carbon coating oxidation
Iron nanotube.
Obtained carbon coating ferric oxide nano pipe and solid paraffin are pressed into mass fraction 10:90 uniformly mixing, in die for special purpose
The mm of external diameter 7.00, the mm of internal diameter 3.04, the mm of thickness 2.0 coaxial sample are pressed on tool, with model HP722ES vector nets
Network analyzer tests its absorbing property in 1-18 gigahertz frequency ranges.When the matching thickness of sample is 2.8 mm,
Reach the dB of minimum reflectance -20.08, corresponding RL at 13.92 GHz<- 10 dB frequency range is 11.5 ~ 17.2 GHz, and frequency range is wide
Degree reaches 5.7 GHz, as shown in Figure 3.
Embodiment 3
Iron chloride, potassium sulfate, ammonium dihydrogen phosphate and sucrose are configured to solution by finite concentration, the wherein concentration of molysite is 0.09
Mol/L, the concentration of sulfate is 6.0 × 10-4 Mol/L, the concentration of ammonium dihydrogen phosphate is 8.0 × 10-4 Mol/L, sucrose add
Add 3% that quality is molysite, magnetic agitation speed is 100 rpm, and mixing time is 4 hours；
The solution of above-mentioned preparation is transferred to stainless steel cauldron, carbon coating oxidation is prepared using supercritical methanol technology reaction certain time
Iron nanotube, specific reaction temperature are 150 DEG C, and pressure is 30 MPa, and the time is 0.5 hour, and washing, drying obtain carbon coating oxygen
Change iron nanotube.
Obtained carbon coating ferric oxide nano pipe and solid paraffin are pressed into mass fraction 10:90 uniformly mixing, in die for special purpose
The mm of external diameter 7.00, the mm of internal diameter 3.04, the mm of thickness 2.0 coaxial sample are pressed on tool, with model HP722ES vector nets
Network analyzer tests its absorbing property in 1-18 gigahertz frequency ranges.When the matching thickness of sample is 3.0 mm,
Reach the dB of minimum reflectance -19.23, corresponding RL at 13.24 GHz<- 10 dB frequency range is 11.2 ~ 16.5 GHz, and frequency range is wide
Degree reaches 5.3 GHz, as shown in Figure 3.
Claims (5)
1. a kind of preparation method of carbon coating ferric oxide nano pipe, it is characterised in that comprise the following steps：
（1）Soluble ferric iron salt, sulfate, ammonium dihydrogen phosphate and sucrose are configured to solution by finite concentration, magnetic agitation is certain
Time；
（2）By step（1）Middle solution is transferred to stainless steel cauldron, regulation temperature, pressure, using the timing of supercritical methanol technology reaction one
Between carbon coating ferric oxide nano pipe is prepared.
2. the preparation method of carbon coating ferric oxide nano pipe according to claim 1, it is characterised in that step（1）Middle solubility
Molysite is iron chloride or ferric nitrate, and the concentration of soluble ferric iron salt in the solution is 0.08 ~ 0.1 mol/L；Sulfate is sodium sulphate
Or potassium sulfate, the concentration formed added to solution are 6.0 × 10-4~1.0×10-3 mol/L；Ammonium dihydrogen phosphate is added in solution
The concentration of formation is 6.0 × 10-4~1.0×10-3 mol/L；Sucrose is the 1% ~ 5% of molysite added to the quality of solution, and magnetic force stirs
It is 100 ~ 1000 rpm to mix speed, and mixing time is 0.5 ~ 5 hour.
3. the preparation method of carbon coating ferric oxide nano pipe according to claim 1, it is characterised in that step（2）In it is overcritical
Reaction temperature prepared by method is 120 ~ 150 DEG C, and pressure is 5 ~ 40 MPa, and the time is 0.5 ~ 6 hour.
4. a kind of carbon coating ferric oxide nano pipe, it is characterised in that be prepared according to any methods describeds of claim 1-3.
5. application of the carbon coating ferric oxide nano pipe as electromagnetic wave absorbent material according to claim 4.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108502932A (en) * | 2018-06-06 | 2018-09-07 | 江苏大学 | A kind of FeOOH microns of octahedral preparation method |
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| CN103715427A (en) * | 2013-12-25 | 2014-04-09 | 天津斯特兰能源科技有限公司 | Preparation method for lithium iron phosphate nano single-crystal material |
| CN104269536A (en) * | 2014-09-25 | 2015-01-07 | 天津大学 | Graphene-loaded spherical carbon-cladded iron oxide composite material and preparation method of composite material |
| CN105633404A (en) * | 2016-03-18 | 2016-06-01 | 王海峰 | Method for preparing carbon-coated lithium iron phosphate from modified ferric oxide |
| CN106848301A (en) * | 2017-03-10 | 2017-06-13 | 三峡大学 | A kind of Fe2O3Nano-bar array electrode is In-situ sulphiding and preparation method and applications of carbon coating |
| CN107275624A (en) * | 2017-07-24 | 2017-10-20 | 扬州大学 | The preparation method of carbon coating spindle shape iron oxide composite material of core-shell structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108502932A (en) * | 2018-06-06 | 2018-09-07 | 江苏大学 | A kind of FeOOH microns of octahedral preparation method |
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