CN113462356B - Preparation method of binary composite wave-absorbing material - Google Patents
Preparation method of binary composite wave-absorbing material Download PDFInfo
- Publication number
- CN113462356B CN113462356B CN202110666165.2A CN202110666165A CN113462356B CN 113462356 B CN113462356 B CN 113462356B CN 202110666165 A CN202110666165 A CN 202110666165A CN 113462356 B CN113462356 B CN 113462356B
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- porous carbon
- doped porous
- absorbing material
- binary composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000011358 absorbing material Substances 0.000 title claims abstract description 30
- 239000011218 binary composite Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 239000000243 solution Substances 0.000 claims abstract description 19
- 239000013154 zeolitic imidazolate framework-8 Substances 0.000 claims abstract description 15
- MFLKDEMTKSVIBK-UHFFFAOYSA-N zinc;2-methylimidazol-3-ide Chemical compound [Zn+2].CC1=NC=C[N-]1.CC1=NC=C[N-]1 MFLKDEMTKSVIBK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 239000002243 precursor Substances 0.000 claims abstract description 12
- 238000001291 vacuum drying Methods 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000000725 suspension Substances 0.000 claims abstract description 8
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000011259 mixed solution Substances 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 6
- 235000015393 sodium molybdate Nutrition 0.000 claims abstract description 6
- 239000011684 sodium molybdate Substances 0.000 claims abstract description 6
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims abstract description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000012153 distilled water Substances 0.000 claims abstract description 4
- 239000012299 nitrogen atmosphere Substances 0.000 claims abstract description 4
- 239000012265 solid product Substances 0.000 claims abstract description 4
- 238000000967 suction filtration Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 15
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 15
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 12
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 claims description 11
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- XIOUDVJTOYVRTB-UHFFFAOYSA-N 1-(1-adamantyl)-3-aminothiourea Chemical compound C1C(C2)CC3CC2CC1(NC(=S)NN)C3 XIOUDVJTOYVRTB-UHFFFAOYSA-N 0.000 claims description 5
- 239000003575 carbonaceous material Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 239000000463 material Substances 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000002441 X-ray diffraction Methods 0.000 description 4
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 3
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical group Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 2
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to a preparation method of a binary composite wave-absorbing material, which comprises the steps of firstly preparing a ZIF-8 precursor, then placing the ZIF-8 precursor into a tube furnace, heating to 800-900 ℃ under a nitrogen atmosphere, preserving heat for 1-5 h, then cooling to room temperature to obtain nitrogen-doped porous carbon, adding the nitrogen-doped porous carbon into distilled water, stirring uniformly to obtain nitrogen-doped porous carbon suspension, sequentially adding sodium molybdate and thiourea into the nitrogen-doped porous carbon suspension, stirring uniformly, transferring the mixed solution into a reaction kettle, placing the reaction kettle into a drying oven, preserving heat for 12-36 h at 190-220 ℃, taking out the reaction kettle, naturally cooling at room temperature, carrying out suction filtration on the reaction solution, washing a solid product, and then carrying out vacuum drying to constant weight to obtain the binary composite wave-absorbing material. The method has the advantages of simple preparation flow, easy control and low production cost, and the prepared wave-absorbing material has the advantages of low density, wide wave-absorbing frequency and excellent wave-absorbing performance.
Description
Technical Field
The invention belongs to the technical field of wave-absorbing materials, and particularly relates to a preparation method of a nitrogen-doped porous carbon/molybdenum disulfide binary composite wave-absorbing material.
Background
With the advent of the 5G age, electronic products are rapidly updated, and a certain amount of electromagnetic radiation is released in the use process of the electronic products, so that electromagnetic pollution is generated for a long time. Prolonged exposure to electromagnetic radiation can lead to reduced immunity and increased morbidity. Therefore, research into an absorbing material for preventing and eliminating electromagnetic waves has been focused on by researchers.
The material has the wave absorbing effect and needs to meet two conditions: impedance matching and attenuation matching. However, it is generally difficult to satisfy impedance matching for a single material, so it is often considered to perform multiple compounding or form a special structure on different dielectric materials to obtain a suitable impedance matching, so that more electromagnetic waves can smoothly enter the material to be attenuated. In addition, with the development of the wave-absorbing material, the 'thin, light, wide and strong' is four requirements of future research of the material, and the traditional wave-absorbing material such as a carbon-based material has strong wave-absorbing performance, but has narrow frequency band, so that the application of the wave-absorbing material in a wider range is limited to a certain extent.
Disclosure of Invention
The invention aims to solve the problems of high density and narrow wave-absorbing frequency band of the wave-absorbing material in the prior art, and provides a preparation method of a binary composite wave-absorbing material, which has the advantages of simple preparation flow, easy control and low production cost, and the prepared wave-absorbing material has the advantages of low density, wide wave-absorbing frequency band and excellent wave-absorbing performance.
In order to solve the technical problems, the invention adopts the following technical scheme:
a preparation method of a binary composite wave-absorbing material comprises the following steps:
(1) Respectively adding 2-methylimidazole and zinc nitrate hexahydrate into methanol, stirring and dissolving at room temperature to obtain a zinc nitrate solution and a 2-methylimidazole solution, dropwise adding the zinc nitrate solution into the 2-methylimidazole solution, continuously stirring for 30-60 min, aging for 12-36 h at room temperature, filtering the reaction solution, washing filter residues with ethanol, and vacuum drying the filter residues to constant weight to obtain a ZIF-8 precursor;
(2) Putting the ZIF-8 precursor prepared in the step (1) into a tube furnace, heating to 800-900 ℃ in nitrogen atmosphere, preserving heat for 1-5 h, and then cooling to room temperature to obtain nitrogen-doped porous carbon;
(3) Adding nitrogen-doped porous carbon into distilled water, stirring uniformly to obtain nitrogen-doped porous carbon suspension, sequentially adding sodium molybdate and thiourea into the nitrogen-doped porous carbon suspension, and stirring uniformly to obtain a mixed solution;
(4) And (3) transferring the mixed solution to a reaction kettle, placing the reaction kettle in a drying oven, preserving heat for 12-36 h at 190-220 ℃, taking out the reaction kettle, naturally cooling the reaction kettle at room temperature, carrying out suction filtration on the reaction solution, washing the solid product, and then carrying out vacuum drying to constant weight to obtain the binary composite wave-absorbing material.
Further, in the step (1), the molar ratio of the zinc nitrate hexahydrate to the 2-methylimidazole is 1: (7-10).
Further, in the step (1), the drying temperature is 50-80 ℃.
Further, in the step (2), the heating rate is 2-4 ℃/min.
Further, in the step (3), the molar ratio of the sodium molybdate to the nitrogen-doped porous carbon is 1 (6 to 15).
Further, in the step (4), the temperature of the vacuum drying is 50-80 ℃.
The invention has the beneficial effects that: according to the invention, the nitrogen-doped porous carbon is compounded with molybdenum disulfide by utilizing the characteristics of good microwave absorption performance of the nitrogen-doped porous carbon at low frequency, good thermal stability, strong chemical stability and the like, so that the impedance matching of the material can be effectively improved, and more electromagnetic waves are promoted to enter the material; in addition, the nitrogen doped porous carbon and molybdenum disulfide have stronger interface combination, so that the effective wave-absorbing frequency band can be widened, and the wave-absorbing performance can be enhanced.
Drawings
FIG. 1 is an XRD pattern of the binary composite wave-absorbing material prepared in example 1;
FIG. 2 is an SEM image of a binary composite wave-absorbing material prepared in example 1;
FIG. 3 is a graph showing the wave-absorbing performance of the binary composite wave-absorbing material prepared in example 1.
Detailed Description
The present invention will be specifically described with reference to examples below in order to make the objects and advantages of the present invention more apparent. It should be understood that the following text is intended to describe only one or more specific embodiments of the invention and does not limit the scope of the invention strictly as claimed.
Example 1
A preparation method of a binary composite wave-absorbing material comprises the following steps:
(1) Adding 6.849g of 2-methylimidazole and 2.933g of zinc nitrate hexahydrate into 100mL of methanol respectively, stirring and dissolving at room temperature to obtain zinc nitrate solution and 2-methylimidazole solution, dropwise adding the zinc nitrate solution into the 2-methylimidazole solution, continuously stirring for 40min, aging at room temperature for 24h, filtering the reaction solution, washing filter residues with ethanol, and drying the filter residues in a vacuum drying oven at 70 ℃ for 12h to obtain a ZIF-8 precursor;
(2) Grinding the ZIF-8 precursor prepared in the step (1) into fine powder, then placing the fine powder into a tube furnace, heating to 800 ℃ at a heating rate of 2 ℃/min under a nitrogen atmosphere, preserving heat for 3 hours, and then cooling to room temperature to obtain nitrogen-doped porous carbon;
(3) Adding 0.64g of nitrogen-doped porous carbon into 40mL of distilled water, uniformly stirring to obtain nitrogen-doped porous carbon suspension, sequentially adding 0.9677g of sodium molybdate and 1.1418g of thiourea into the nitrogen-doped porous carbon suspension, and uniformly stirring to obtain a mixed solution;
(4) And (3) transferring the mixed solution to a reaction kettle, placing the reaction kettle in a drying oven, preserving heat at 200 ℃ for 24 hours, taking out the reaction kettle, naturally cooling at room temperature, carrying out suction filtration on the reaction solution, washing the solid product, and then carrying out vacuum drying at 60 ℃ for 12 hours to obtain the binary composite wave-absorbing material.
Performing phase structure analysis on the obtained sample by using an X-ray diffractometer (XRD) and a Fourier transform infrared spectrometer (FTIR); the microstructure of the sample is analyzed by a Scanning Electron Microscope (SEM), a Transmission Electron Microscope (TEM) and a corresponding Mapping graph, and electromagnetic parameters of the sample are analyzed by a Vector Network Analyzer (VNA), so that the wave absorbing performance of the sample is calculated. The test results are shown in FIGS. 1-3.
FIG. 1 is a nitrogen doped porous carbon/molybdenum disulfide (NPC/MoS) prepared in example 1 2 ) The XRD pattern of the binary composite wave-absorbing material is shown in the figure 1 (a), which is the XRD pattern of the ZIF-8, and the ZIF-8 can be found to have a plurality of diffraction peaks and sharp peaks, which indicates that the ZIF-8 precursor is successfully prepared in the experimental process; FIG. 1 (b) is a calcined nitrogen-doped porous carbon material from which it can be seen that the diffraction peak attributed to the ZIF-8 precursor disappeared, leaving only a broad diffraction peak around 2θ=25°, indicating that ZIF-8 has been completely converted to a nitrogen-doped porous carbon (NPC) material; FIG. 1 (c) is molybdenum disulfide (MoS 2 ) The XRD pattern of the (B) is compared with the corresponding standard card, and the peak positions are basically consistent; FIG. 1 (d) is a nitrogen doped porous carbon/molybdenum disulfide (NPC/MoS) 2 ) The diffraction peak of molybdenum disulfide is evident from the figure, whereas the diffraction peak of nitrogen-doped porous carbon is not evident, probably due to the diffraction of nitrogen-doped porous carbonThe intensity of the peak is weaker and is masked by the diffraction peak of molybdenum disulfide.
FIG. 2 is a nitrogen doped porous carbon/molybdenum disulfide (NPC/MoS) prepared in example 1 2 ) SEM image of binary composite wave-absorbing material. In FIG. 2, (a-1) and (a-2), (b-1) and (b-2), (c-1) and (c-2), (d-1) and (d-2) are ZIF-8 precursors, NPC, moS, respectively 2 And NPC/MoS 2 According to the SEM image of the (2), the ZIF-8 precursor is rhombic dodecahedron, the grain size is about 500nm, the calcined porous carbon material still maintains the shape of the rhombic dodecahedron, but the surface is slightly concave, the size is slightly contracted, the molybdenum disulfide is spherical, and the size is between 3 and 4 mu m; as can be clearly seen from FIGS. 2 (d-1) and (d-2), the nitrogen doped porous carbon material is inlaid on the surface of molybdenum disulfide.
FIG. 3 is a nitrogen doped porous carbon/molybdenum disulfide (NPC/MoS) prepared in example 1 2 ) And the reflectivity loss curve of the binary composite wave absorbing material is 1.0-5.5 mm thick. From the graph, it can be found that the minimum reflection loss value is-34.9 dB when the thickness is 3.0mm and the frequency is 12GHz, and the effective absorption frequency bands are 6.2GHz respectively.
While the embodiments of the present invention have been described in detail with reference to the examples, the present invention is not limited to the above embodiments, and it will be apparent to those skilled in the art that various equivalent changes and substitutions can be made therein without departing from the principles of the present invention, and such equivalent changes and substitutions should also be considered to be within the scope of the present invention.
Claims (5)
1. The preparation method of the binary composite wave-absorbing material is characterized by comprising the following steps of:
(1) Respectively adding 2-methylimidazole and zinc nitrate hexahydrate into methanol, stirring and dissolving at room temperature to obtain a zinc nitrate solution and a 2-methylimidazole solution, dropwise adding the zinc nitrate solution into the 2-methylimidazole solution, continuously stirring for 30-60 min, aging for 12-36 h at room temperature, filtering the reaction solution, washing filter residues with ethanol, and vacuum drying the filter residues to constant weight to obtain a ZIF-8 precursor;
(2) Grinding the ZIF-8 precursor prepared in the step (1) into fine powder, then placing the fine powder into a tube furnace, heating to 800-900 ℃ in a nitrogen atmosphere, preserving heat for 1-5 h, and then cooling to room temperature to obtain nitrogen-doped porous carbon;
(3) Adding nitrogen-doped porous carbon into distilled water, stirring uniformly to obtain nitrogen-doped porous carbon suspension, sequentially adding sodium molybdate and thiourea into the nitrogen-doped porous carbon suspension, and stirring uniformly to obtain a mixed solution;
(4) Transferring the mixed solution to a reaction kettle and placing the reaction kettle in a drying oven, preserving heat for 12-36 hours at 190-220 ℃, taking out the reaction kettle, naturally cooling the reaction kettle at room temperature, carrying out suction filtration on the reaction solution, washing a solid product, and then carrying out vacuum drying to constant weight to obtain a binary composite wave-absorbing material nitrogen-doped porous carbon/molybdenum disulfide, wherein the molybdenum disulfide is spherical, the size is 3-4 mu m, and the nitrogen-doped porous carbon material is embedded on the surface of the molybdenum disulfide;
in the step (3), the molar ratio of the sodium molybdate to the nitrogen-doped porous carbon is 1 (6-15).
2. The method for preparing a binary composite wave-absorbing material according to claim 1, wherein in the step (1), the molar ratio of the zinc nitrate hexahydrate to the 2-methylimidazole is 1: (7-10).
3. The method for producing a binary composite wave-absorbing material according to claim 1, wherein in the step (1), the drying temperature is 50 to 80 ℃.
4. The method for preparing a binary composite wave-absorbing material according to claim 1, wherein in the step (2), the heating rate is 2-4 ℃/min.
5. The method of producing a binary composite absorbing material according to any one of claims 1 to 4, wherein in the step (4), the temperature of the vacuum drying is 50 to 80 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110666165.2A CN113462356B (en) | 2021-06-16 | 2021-06-16 | Preparation method of binary composite wave-absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110666165.2A CN113462356B (en) | 2021-06-16 | 2021-06-16 | Preparation method of binary composite wave-absorbing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113462356A CN113462356A (en) | 2021-10-01 |
| CN113462356B true CN113462356B (en) | 2023-11-28 |
Family
ID=77870253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110666165.2A Active CN113462356B (en) | 2021-06-16 | 2021-06-16 | Preparation method of binary composite wave-absorbing material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113462356B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607510A (en) * | 2019-01-15 | 2019-04-12 | 广西大学 | ZIF base nitrogen-doped porous carbon material and preparation method thereof |
| CN109786682A (en) * | 2018-06-20 | 2019-05-21 | 信阳师范学院 | 12 face nucleome anode material of lithium-ion battery of a kind of two selenizing molybdenum@nitrogen-doped carbon and preparation method thereof, sodium-ion battery |
| CN110492083A (en) * | 2019-08-28 | 2019-11-22 | 青岛大学 | A kind of preparation method of molybdenum disulfide/graphene/carbon multistage hole composite material |
| CN110787814A (en) * | 2019-11-07 | 2020-02-14 | 汕头大学 | Layered hollow ZnCdS/MoS2Heterojunction cage and preparation and application thereof |
| CN112063365A (en) * | 2020-09-04 | 2020-12-11 | 山东大学 | Molybdenum disulfide nitrogen composite porous carbon material and preparation method and application thereof |
| CN112916861A (en) * | 2021-01-20 | 2021-06-08 | 昆明理工大学 | Fe2Mo/NC binary alloy nano catalyst and preparation method thereof |
-
2021
- 2021-06-16 CN CN202110666165.2A patent/CN113462356B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786682A (en) * | 2018-06-20 | 2019-05-21 | 信阳师范学院 | 12 face nucleome anode material of lithium-ion battery of a kind of two selenizing molybdenum@nitrogen-doped carbon and preparation method thereof, sodium-ion battery |
| CN109607510A (en) * | 2019-01-15 | 2019-04-12 | 广西大学 | ZIF base nitrogen-doped porous carbon material and preparation method thereof |
| CN110492083A (en) * | 2019-08-28 | 2019-11-22 | 青岛大学 | A kind of preparation method of molybdenum disulfide/graphene/carbon multistage hole composite material |
| CN110787814A (en) * | 2019-11-07 | 2020-02-14 | 汕头大学 | Layered hollow ZnCdS/MoS2Heterojunction cage and preparation and application thereof |
| CN112063365A (en) * | 2020-09-04 | 2020-12-11 | 山东大学 | Molybdenum disulfide nitrogen composite porous carbon material and preparation method and application thereof |
| CN112916861A (en) * | 2021-01-20 | 2021-06-08 | 昆明理工大学 | Fe2Mo/NC binary alloy nano catalyst and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113462356A (en) | 2021-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112961650A (en) | Tri-metal organic framework derived iron-nickel alloy/porous carbon ultrathin wave absorber and preparation method thereof | |
| CN114195197B (en) | Magnetic porous carbon compound and preparation method and application thereof | |
| CN112047386A (en) | Heating modified MXene/ferroferric oxide composite wave-absorbing material and preparation method thereof | |
| CN112752496B (en) | Hollow nitrogen-doped nickel oxide/nickel/carbon composite material, preparation method and application | |
| CN111818785B (en) | Low-temperature foaming process for preparing thin-layer carbon-loaded nano ZnO wave-absorbing material in batches | |
| CN113825380A (en) | Cobalt/manganese oxide/porous graphitized carbon wave-absorbing material and preparation method thereof | |
| CN110746931B (en) | Method for preparing ITO/porous carbon composite wave-absorbing material by taking In-MOFs as template | |
| CN113735093A (en) | Porous N-doped Co @ C composite material and preparation method and application thereof | |
| CN113462356B (en) | Preparation method of binary composite wave-absorbing material | |
| CN113429933A (en) | Ferroferric oxide/biomass porous carbon composite wave-absorbing material and preparation method thereof | |
| CN112920774A (en) | Hexagonal Co @ C wave absorber, preparation method and application | |
| CN115332821A (en) | Preparation method of CoNi/NC wave-absorbing material | |
| CN115745627A (en) | SiCN ceramic wave absorbing agent and preparation method thereof | |
| CN115318210A (en) | Preparation method and application of cobalt disulfide/porous carbon/silicon carbide aerogel composite material for electromagnetic shielding | |
| CN114455630A (en) | Multi-band composite electromagnetic wave absorption material and preparation method and application thereof | |
| CN114614272A (en) | MXene/Co/C composite wave-absorbing material derived from MOF and preparation method thereof | |
| CN114206091A (en) | CoFe/C-CNT wave-absorbing material and preparation process and application thereof | |
| CN114314679A (en) | Polypyrrole-coated ferroferric oxide nanoflower wave-absorbing material, preparation method and application | |
| CN115340131B (en) | Preparation method of cobalt disulfide-polythiophene wave-absorbing material | |
| CN114875391B (en) | Preparation method of FeCo alloy coated foam nickel wave-absorbing material | |
| CN115926182B (en) | Preparation method of novel braided Ni-MOF wave-absorbing material | |
| CN117511501B (en) | Composite wave-absorbing material with core-shell structure and preparation method thereof | |
| CN116656317A (en) | MoS (MoS) 2 /Ti 2 CT x MXene composite wave-absorbing material and preparation method thereof | |
| CN113708086B (en) | Transition metal nano powder/carbon nano tube composite material and preparation method and application thereof | |
| CN118308068A (en) | Preparation method and application of multidimensional assembled hollow MOF derivative/molybdenum disulfide composite material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20211001 Assignee: DONGTAI GAOKE TECHNOLOGY INNOVATION PARK Co.,Ltd. Assignor: YANCHENG INSTITUTE OF TECHNOLOGY Contract record no.: X2024980001369 Denomination of invention: Preparation method of a binary composite absorbing material Granted publication date: 20231128 License type: Common License Record date: 20240124 |
|
| EC01 | Cancellation of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: DONGTAI GAOKE TECHNOLOGY INNOVATION PARK Co.,Ltd. Assignor: YANCHENG INSTITUTE OF TECHNOLOGY Contract record no.: X2024980001369 Date of cancellation: 20240407 |