CN105976971A - Graphene-ferroferric oxide-polyvinyl alcohol magnetic composite material and preparation method - Google Patents
Graphene-ferroferric oxide-polyvinyl alcohol magnetic composite material and preparation method Download PDFInfo
- Publication number
- CN105976971A CN105976971A CN201610431495.2A CN201610431495A CN105976971A CN 105976971 A CN105976971 A CN 105976971A CN 201610431495 A CN201610431495 A CN 201610431495A CN 105976971 A CN105976971 A CN 105976971A
- Authority
- CN
- China
- Prior art keywords
- graphene
- polyvinyl alcohol
- water
- magnetic composite
- ferroso
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/42—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of organic or organo-metallic materials, e.g. graphene
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a graphene-ferroferric oxide-polyvinyl alcohol magnetic composite material. The graphene-ferroferric oxide-polyvinyl alcohol magnetic composite material is prepared by taking PVA as the substrate; the water-soluble graphene with the patent number of ZL2013102963907, the FeCl<3>.6H<2>O ferric salt and (NH<4>)<2>Fe(SO<4>)<2>.6H<2>O ferrite are mixed; and then the mixture is subjected to a coprecipitation method under a water phase at the pH value of 10 to obtain the magnetic composite material. According to the composite material, the agglomeration of ferroferric oxide can be avoided, and the suspension effect is improved; in addition, the magnetic material which is compounded in a more uniform manner can be obtained; meanwhile, the material can be prepared in one step through the coprecipitation method under the water phase, so that adverse influences on the composition, the performance and the like of the material from additional suspension agent can be avoided; the preparation method for the magnetic composite material is low in cost, simple to operate and free of environmental pollution; and in addition, the magnetic composite material obtained by the invention has magnetic property and good mechanical performance, quite high magnetic response, and relatively high specific saturation magnetization and coercivity.
Description
Technical field
The present invention relates to a kind of Graphene magnetic composite and preparation method.
Background technology
Graphene is by sp2The carbon atom of orbital hybridization is arranged in the monolayer two of honeycomb crystal lattice with Hexagonal close
Dimensional plane structure, is to construct the sp such as zero dimension fullerene, one-dimensional CNT, said three-dimensional body phase graphite2Hydridization carbon is (i.e.
Carbon with double bond be connected or connect other atoms) basic structural unit.Graphene heat conductivility prominent (5000
W/m.K), mechanical performance excellence, Young's modulus reach 125GPa, room temperature up to 1100GPa, fracture strength
Under there is electron mobility at a high speed, be the multifunctional material being currently known in material most potentiality to be exploited.But
Its Graphene chemical inertness is strong and dissolubility is poor, greatly have impact on its composite effect and application.
Polyvinyl alcohol (PVA) is formed by polyvinyl acetate hydrolysis, containing hydroxyl in molecule, therefore has
There is good water solublity, film property, cohesion and emulsibility, be used for producing coating, emulsifying agent, dispersion
The product such as agent and adhesive, but it does not have magnetic and mechanical strength is poor, limits its application.Fe3O4Can
Giving its magnetic, Graphene can be greatly improved its mechanical strength, but their hydrophilic is the most weak, with water-soluble
Property PVA composite effect poor, and combination process is complicated, be difficult to control, the therefore development and application of associated materials
Less.
Summary of the invention
It is an object of the invention to provide a kind of Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite and
Preparation method.
The present invention is using PVA as substrate, by water-soluble graphene (patent No. ZL2013102963907),
With FeCl3·6H2O iron salt and (NH4)2Fe(SO4)2·6H2O ferrous salt mixes, and is the water of 10 at pH value
Under mutually, use Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite that coprecipitation obtains.
The preparation method of the present invention is specific as follows:
(1) by 0.02-1.60g FeCl3·6H2O and (NH4)2Fe(SO4)2·6H2(mass ratio is O mixture
1:0.8) join and 7mL water is made into mixed molysite solution.
(2) by mixed molysite solution prepared for step (1), the polyvinyl alcohol water of 13mL mass concentration 13%
After solution mixes with the water-soluble graphene solution that 0.25-2mL mass concentration is 15.7mg/mL, under stirring
Being slowly added dropwise the ammonia of 25%, the pH value making mixed liquor is 10, is then settled to 30mL with distilled water.
(3) under nitrogen protection, the mixed liquor obtained by heating steps (2) to 60-90 DEG C, insulated and stirred
After 0.5-4h, it is cooled to room temperature.
(4) by step (3) mixed liquor after cooling at rotating speed 2000r min-1Under be centrifuged 10min, in collection
Clear liquid, 35 DEG C are slowly dried to obtain Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite.
The present invention compared with prior art has the following advantages:
1, water-soluble graphene of the present invention (ZL201310296390.7) is that one has excellent water
The modified graphene of dissolubility, in aqueous good dispersion, and the reunion of ferroso-ferric oxide can be avoided, make
Its suspension effect increases, thus obtains compound more uniform magnetic material.
2, based on them good dissolubility and dispersibility, under enabling each component to be uniformly dispersed in water, one
Step co-precipitation prepares respective material, it is to avoid form at material because of additional other dispersant or suspending agent
The harmful effect that the aspect such as purity and composite performance causes.
3, the preparation method of material is simple, it is easy to operates and controls, and the product composition of preparation is evenly distributed, and produces
Quality is high, low cost and non-environmental-pollution.
4, Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite that the present invention obtains has magnetic, and
In paramagnetism, there are good magnetic responses, higher specific saturation magnetization and coercivity, have good simultaneously
Good mechanical performance, absorbs and can respectively reach 0.58J and 198.13MPa with ultimate tensile strength.
Accompanying drawing explanation
Fig. 1 is ferroso-ferric oxide-polyethylene obtained in the embodiment of the present invention 1,2,3,4,5,6 and 7
The infrared spectrum spectrogram of alcohol composite magnetic coating.
Fig. 2 is Graphene-ferroso-ferric oxide-polyvinyl alcohol composite magnetic coating obtained in the embodiment of the present invention 1
XRD figure.
Fig. 3 is obtained Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic obtained in the embodiment of the present invention 3
The XRD figure of property composite membrane.
Fig. 4 is Graphene-ferroso-ferric oxide-polyvinyl alcohol composite magnetic coating obtained in the embodiment of the present invention 5
XRD figure.
Fig. 5 is Graphene-ferroso-ferric oxide-polyvinyl alcohol composite magnetic coating obtained in the embodiment of the present invention 6
XRD figure.
Fig. 6 is Graphene-ferroso-ferric oxide-polyvinyl alcohol composite magnetic coating obtained in the embodiment of the present invention 1
SEM figure.
Fig. 7 is Graphene-ferroso-ferric oxide-polyvinyl alcohol composite magnetic coating obtained in the embodiment of the present invention 2
SEM figure.
Fig. 8 is Graphene-ferroso-ferric oxide-polyvinyl alcohol composite magnetic coating obtained in the embodiment of the present invention 3
SEM figure.
Fig. 9 is Graphene-ferroso-ferric oxide-polyvinyl alcohol composite magnetic coating obtained in the embodiment of the present invention 4
SEM figure.
Figure 10 is Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic coupling obtained in the embodiment of the present invention 5
The TEM figure of film.
Figure 11 is Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic coupling obtained in the embodiment of the present invention 6
The TEM figure of material.
Figure 12 is Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic coupling obtained in the embodiment of the present invention 7
The TEM figure of material
Figure 13 is Graphene-ferroso-ferric oxide-polyethylene obtained in the embodiment of the present invention 2,5,6 and 7
The hysteresis graph of alcohol composite magnetic coating.
Figure 14 is the Graphene-ferroso-ferric oxide obtained by the present invention obtains in embodiment 2,5,6 and 7-poly-
The stress-strain curve of vinyl alcohol composite magnetic coating.
In above figure: a, b, c, d, e, f and g represent embodiment 1,2,3,4,5,6 and 7 respectively
Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite obtained by.
In the infrared spectrum spectrogram of the Graphene-ferroso-ferric oxide-polyvinyl alcohol composite magnetic coating shown in Fig. 1,
At 3300-3500cm-1Stretching vibration for PVA hydroxyl；1236,1142 and 1094cm-1For water solublity stone
The S-phenyl peak of the S-O peak sum of sulfonic acid group in ink alkene；620cm-1For Fe3O4Fe-O characteristic absorption
Peak, illustrates that this composite membrane is PVA, water-soluble graphene and Fe3O4Product after Fu He.
In the XRD figure of the Graphene-ferroso-ferric oxide-polyvinyl alcohol composite magnetic coating shown in Fig. 2-Fig. 5,
PVA has sharp-pointed characteristic peak, water-soluble graphene and Fe in 2 θ=19.52 °3O4Characteristic peak inconspicuous,
PVA is the main substance of material.
In the SEM figure of the Graphene-ferroso-ferric oxide-polyvinyl alcohol composite magnetic coating shown in Fig. 6-Fig. 9,
Fe3O4With water-soluble graphene uniformly in PVA substrate, Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic is multiple
The smooth surface closing film is smooth；Along with the increase of the mass fraction of water-soluble graphene, four oxidation on film surface
The pattern of three-iron is varied from, as spherical to bar-shaped transformation.
Scheme at the TEM of the Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite shown in Figure 10-Figure 12
In, due to the coating function of PVA film, Graphene layer structure is fuzzyyer, but profile is clearly visible.Wherein,
The pattern of magnetic particles of ferroferric oxide is different.
Graphene-ferroso-ferric oxide obtained by the embodiment of the present invention 2,5,6 and 7 shown in Figure 13-
In the hysteresis graph of polyvinyl alcohol composite magnetic coating, all Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic are multiple
The curve closing film is S type, for paramagnet, has good magnetic responses, higher ratio saturated magnetization
Intensity and coercivity, specific saturation magnetization is maximum up to 4.76emu g-1。
Graphene-ferroso-ferric oxide-polyvinyl alcohol in the embodiment of the present invention 2,5,6 and 7 shown in Figure 14
In the stress-strain curve of composite magnetic coating, the absorption energy of display composite magnetic coating and ultimate tensile strength can
Respectively reaching 0.58J and 198.13MPa, all Graphene-ferroso-ferric oxide-polyvinyl alcohol composite magnetic coating are equal
Belong to and be similar to soft and tough type.
Detailed description of the invention:
Embodiment 1
(1) by 0.02g FeCl3·6H2O and (NH4)2Fe(SO4)2·6H2O mixture (mass ratio is 1:0.8)
Join and 7mL water is made into mixed molysite solution.
(2) by mixed molysite solution prepared for step (1), the polyvinyl alcohol water of 13mL mass concentration 13%
After solution mixes with the water-soluble graphene solution that 0.25mL mass concentration is 15.7mg/mL, stirring is lower slow
The ammonia of slow dropping 25%, the pH value making mixed liquor is 10, is then settled to 30mL with distilled water.
(3) under nitrogen protection, the mixed liquor obtained by heating steps (2) to 80 DEG C, insulated and stirred 0.5
After h, it is cooled to room temperature.
(4) by step (3) mixed liquor after cooling at rotating speed 2000r min-1Under be centrifuged 10min, in collection
Clear liquid, 35 DEG C are slowly dried to obtain Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite.
Embodiment 2
(1) by 0.16g FeCl3·6H2O and (NH4)2Fe(SO4)2·6H2O mixture (mass ratio is 1:0.8)
Join and 7mL water is made into mixed molysite solution.
(2) by mixed molysite solution prepared for step (1), the polyvinyl alcohol water of 13mL mass concentration 13%
After solution mixes with the water-soluble graphene solution that 1mL mass concentration is 15.7mg/mL, stirring is lower slowly
The ammonia of dropping 25%, the pH value making mixed liquor is 10, is then settled to 30mL with distilled water.
(3) under nitrogen protection, the mixed liquor obtained by heating steps (2) to 60 DEG C, insulated and stirred 2h
After, it is cooled to room temperature.
(4) by step (3) mixed liquor after cooling at rotating speed 2000r min-1Under be centrifuged 10min, in collection
Clear liquid, 35 DEG C are slowly dried to obtain Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite.
Embodiment 3
(1) by 0.8g FeCl3·6H2O and (NH4)2Fe(SO4)2·6H2O mixture (mass ratio is 1:0.8)
Join and 7mL water is made into mixed molysite solution.
(2) by mixed molysite solution prepared for step (1), the polyvinyl alcohol water of 13mL mass concentration 13%
After solution mixes with the water-soluble graphene solution that 1.5mL mass concentration is 15.7mg/mL, stirring is lower slowly
The ammonia of dropping 25%, the pH value making mixed liquor is 10, is then settled to 30mL with distilled water.
(3) under nitrogen protection, the mixed liquor obtained by heating steps (2) to 60 DEG C, insulated and stirred 4h
After, it is cooled to room temperature.
(4) by step (3) mixed liquor after cooling at rotating speed 2000r min-1Under be centrifuged 10min, in collection
Clear liquid, 35 DEG C are slowly dried to obtain Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite.
Embodiment 4
(1) by 1.60g FeCl3·6H2O and (NH4)2Fe(SO4)2·6H2O mixture (mass ratio is 1:0.8)
Join and 7mL water is made into mixed molysite solution.
(2) by mixed molysite solution prepared for step (1), the polyvinyl alcohol water of 13mL mass concentration 13%
After solution mixes with the water-soluble graphene solution that 0.75mL mass concentration is 15.7mg/mL, stirring is lower slow
The ammonia of slow dropping 25%, the pH value making mixed liquor is 10, is then settled to 30mL with distilled water.
(3) under nitrogen protection, the mixed liquor obtained by heating steps (2) to 85 DEG C, insulated and stirred 0.5
After h, it is cooled to room temperature.
(4) by step (3) mixed liquor after cooling at rotating speed 2000r min-1Under be centrifuged 10min, in collection
Clear liquid, 35 DEG C are slowly dried to obtain Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite.
Embodiment 5
(1) by 0.16g FeCl3·6H2O and (NH4)2Fe(SO4)2·6H2O mixture (mass ratio is 1:0.8)
Join and 7mL water is made into mixed molysite solution.
(2) by mixed molysite solution prepared for step (1), the polyvinyl alcohol water of 13mL mass concentration 13%
After solution mixes with the water-soluble graphene solution that 0.25mL mass concentration is 15.7mg/mL, stirring is lower slow
The ammonia of slow dropping 25%, the pH value making mixed liquor is 10, is then settled to 30mL with distilled water.
(3) under nitrogen protection, the mixed liquor obtained by heating steps (2) to 85 DEG C, insulated and stirred 4h
After, it is cooled to room temperature.
(4) by step (3) mixed liquor after cooling at rotating speed 2000r min-1Under be centrifuged 10min, in collection
Clear liquid, 35 DEG C are slowly dried to obtain Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite.
Embodiment 6
(1) by 0.16g FeCl3·6H2O and (NH4)2Fe(SO4)2·6H2O mixture (mass ratio is 1:0.8)
Join and 7mL water is made into mixed molysite solution.
(2) by mixed molysite solution prepared for step (1), the polyvinyl alcohol water of 13mL mass concentration 13%
After solution mixes with the water-soluble graphene solution that 2mL mass concentration is 15.7mg/mL, stirring is lower slowly
The ammonia of dropping 25%, the pH value making mixed liquor is 10, is then settled to 30mL with distilled water.
(3) under nitrogen protection, the mixed liquor obtained by heating steps (2) to 90 DEG C, insulated and stirred 0.5
After h, it is cooled to room temperature.
(4) by step (3) mixed liquor after cooling at rotating speed 2000r min-1Under be centrifuged 10min, in collection
Clear liquid, 35 DEG C are slowly dried to obtain Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite.
Embodiment 7
(1) by 0.2g FeCl3·6H2O and (NH4)2Fe(SO4)2·6H2O mixture (mass ratio is 1:0.8)
Join and 7mL water is made into mixed molysite solution.
(2) by mixed molysite solution prepared for step (1), the polyvinyl alcohol water of 13mL mass concentration 13%
After solution mixes with the water-soluble graphene solution that 1mL mass concentration is 15.7mg/mL, stirring is lower slowly
The ammonia of dropping 25%, the pH value making mixed liquor is 10, is then settled to 30mL with distilled water.
(3) under nitrogen protection, the mixed liquor obtained by heating steps (2) to 70 DEG C, insulated and stirred 4h
After, it is cooled to room temperature.
(4) by step (3) mixed liquor after cooling at rotating speed 2000r min-1Under be centrifuged 10min, in collection
Clear liquid, 35 DEG C are slowly dried to obtain Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite.
Claims (2)
1. Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite, it is characterised in that: it be with
PVA is as substrate, by the water-soluble graphene of patent No. ZL2013102963907, with FeCl3·6H2O
Iron salt and (NH4)2Fe(SO4)2·6H2O ferrous salt mixes, and under the aqueous phase that pH value is 10, uses coprecipitated
The magnetic composite that shallow lake method obtains.
2. the preparation method of the Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite of claim 1,
It is characterized in that:
(1) by 0.02-1.60g FeCl3·6H2O and (NH4)2Fe(SO4)2·6H2O mixture, wherein
FeCl3·6H2O and (NH4)2Fe(SO4)2·6H2The mass ratio of O is 1:0.8, joins in 7mL water and joins
Become mixed molysite solution.
(2) by mixed molysite solution prepared for step (1), the polyvinyl alcohol water of 13mL mass concentration 13%
After solution mixes with the water-soluble graphene solution that 0.25-2mL mass concentration is 15.7mg/mL, under stirring
Being slowly added dropwise the ammonia of 25%, the pH value making mixed liquor is 10, is then settled to 30mL with distilled water.
(3) under nitrogen protection, the mixed liquor obtained by heating steps (2) to 60-90 DEG C, insulated and stirred
After 0.5-4h, it is cooled to room temperature.
(4) by step (3) mixed liquor after cooling at rotating speed 2000r min-1Under be centrifuged 10min, in collection
Clear liquid, 35 DEG C are slowly dried to obtain Graphene-ferroso-ferric oxide-polyvinyl alcohol magnetic composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610431495.2A CN105976971A (en) | 2016-06-17 | 2016-06-17 | Graphene-ferroferric oxide-polyvinyl alcohol magnetic composite material and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610431495.2A CN105976971A (en) | 2016-06-17 | 2016-06-17 | Graphene-ferroferric oxide-polyvinyl alcohol magnetic composite material and preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105976971A true CN105976971A (en) | 2016-09-28 |
Family
ID=57022754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610431495.2A Pending CN105976971A (en) | 2016-06-17 | 2016-06-17 | Graphene-ferroferric oxide-polyvinyl alcohol magnetic composite material and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105976971A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108940256A (en) * | 2018-07-30 | 2018-12-07 | 燕山大学 | A kind of hydrophilic graphene and the nanocomposite of zinc oxide and preparation method thereof |
| CN109192550A (en) * | 2018-09-11 | 2019-01-11 | 上海应用技术大学 | A kind of redox graphene self-supporting film of inorganic nanoparticles load, preparation method and application |
| CN111370575A (en) * | 2020-03-19 | 2020-07-03 | 华东师范大学 | Giant magneto-impedance effect composite material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337695A (en) * | 2008-08-07 | 2009-01-07 | 上海交通大学 | Method for preparing nanometer ferroferric oxide microballoons with particle diameter adjustable by microwave |
| CN102583315A (en) * | 2012-02-15 | 2012-07-18 | 西北工业大学 | Method for preparing ferroferric oxide/ carbon nano tube composite material |
| CN102674476A (en) * | 2012-05-17 | 2012-09-19 | 哈尔滨工业大学 | Chemical preparation method of magnetic graphene |
| CN103435031A (en) * | 2013-07-16 | 2013-12-11 | 燕山大学 | Preparation method of water soluble graphene |
| CN104744713A (en) * | 2015-03-06 | 2015-07-01 | 西安理工大学 | Preparation method of polyvinyl alcohol-oxidized graphite-Fe3O4 composite film |
-
2016
- 2016-06-17 CN CN201610431495.2A patent/CN105976971A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337695A (en) * | 2008-08-07 | 2009-01-07 | 上海交通大学 | Method for preparing nanometer ferroferric oxide microballoons with particle diameter adjustable by microwave |
| CN102583315A (en) * | 2012-02-15 | 2012-07-18 | 西北工业大学 | Method for preparing ferroferric oxide/ carbon nano tube composite material |
| CN102674476A (en) * | 2012-05-17 | 2012-09-19 | 哈尔滨工业大学 | Chemical preparation method of magnetic graphene |
| CN103435031A (en) * | 2013-07-16 | 2013-12-11 | 燕山大学 | Preparation method of water soluble graphene |
| CN104744713A (en) * | 2015-03-06 | 2015-07-01 | 西安理工大学 | Preparation method of polyvinyl alcohol-oxidized graphite-Fe3O4 composite film |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108940256A (en) * | 2018-07-30 | 2018-12-07 | 燕山大学 | A kind of hydrophilic graphene and the nanocomposite of zinc oxide and preparation method thereof |
| CN109192550A (en) * | 2018-09-11 | 2019-01-11 | 上海应用技术大学 | A kind of redox graphene self-supporting film of inorganic nanoparticles load, preparation method and application |
| CN111370575A (en) * | 2020-03-19 | 2020-07-03 | 华东师范大学 | Giant magneto-impedance effect composite material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Designable synthesis of reduced graphene oxide modified using CoFe2O4 nanospheres with tunable enhanced microwave absorption performances between the whole X and Ku bands | |
| CN107949266B (en) | A kind of three-dimensional porous flower-like structure cobalt/carbon nano composite electromagnetic wave absorption material and preparation method thereof | |
| Yang et al. | Facile synthesis of ZnFe2O4/reduced graphene oxide nanohybrids for enhanced microwave absorption properties | |
| Ding et al. | 3D architectures of iron molybdate: phase selective synthesis, growth mechanism, and magnetic properties | |
| Tong et al. | Morphology dependence of static magnetic and microwave electromagnetic characteristics of polymorphic Fe 3 O 4 nanomaterials | |
| CN102745675A (en) | Preparation method of spinel-type magnetic MFe2O4/graphene composite material | |
| Shang et al. | One-pot in situ molten salt synthesis of octahedral Fe 3 O 4 for efficient microwave absorption application | |
| Sivakumar et al. | Study of CoFe 2 O 4 particles synthesized with various concentrations of PVP polymer | |
| CN105399987B (en) | Surface-modified silicon dioxide/graphene oxide nano composite material and preparation method thereof | |
| CN101320610A (en) | Silicium-Iron mixed oxide powder | |
| CN105976971A (en) | Graphene-ferroferric oxide-polyvinyl alcohol magnetic composite material and preparation method | |
| CN105161246B (en) | Nickel-zinc ferrite/polyacrylic acid nano-composite material and preparation method thereof | |
| Chen et al. | One-pot template-free synthesis of water-dispersive Fe 3 O 4@ C nanoparticles for adsorption of bovine serum albumin | |
| WO2017004893A1 (en) | One-dimensional fe3o4/fibroin composite nanochain and preparation method thereof | |
| CN109665565B (en) | Nano Fe3O4Preparation method of composite graphene and nano Fe3O4Composite graphene | |
| Ma et al. | Synthesis of reduced graphene oxide/zinc ferrite/nickel nanohybrids: as a lightweight and high-performance microwave absorber in the low frequency | |
| Chen et al. | Exchange-coupling behavior in soft/hard Li 0.3 Co 0.5 Zn 0.2 Fe 2 O 4/SrFe 12 O 19 core/shell composite synthesized by the two-step ball-milling-assisted ceramic process | |
| CN106745305A (en) | A kind of α Fe2O3The preparation method of magnetic nano powder material | |
| CN104045336A (en) | Preparation method of nickel ferrite magnetic nanofiber material | |
| CN103151129B (en) | Preparation method of multiwalled carbon nanotube (MWCNT)/ ferroferric oxide (Fe3O4)/zinc oxide (ZnO) ternary heterogeneous nanocomposite | |
| CN105047346B (en) | Preparation method of ferroferric oxide/carbon magnetic nanocomposite material | |
| CN108404867A (en) | A kind of lignin-base carbon magnetic Nano material and preparation method and the application in adsorbing methyl orange | |
| Si et al. | In situ anchoring of Fe3O4/CNTs hybrids on basalt fiber for efficient electromagnetic wave absorption | |
| CN105148837B (en) | A kind of by core, ferroso-ferric oxide of CNT is composite of shell and preparation method thereof | |
| KR101701447B1 (en) | Method for preparing plate-shaped magnetic iron oxide and plate-shaped magnetic iron oxide prepared by the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160928 |