CN102276244A - Alcohol-heating method for preparing cobalt nickel ferrite / graphene magnetic nano composite powder - Google Patents
Alcohol-heating method for preparing cobalt nickel ferrite / graphene magnetic nano composite powder Download PDFInfo
- Publication number
- CN102276244A CN102276244A CN2011101348244A CN201110134824A CN102276244A CN 102276244 A CN102276244 A CN 102276244A CN 2011101348244 A CN2011101348244 A CN 2011101348244A CN 201110134824 A CN201110134824 A CN 201110134824A CN 102276244 A CN102276244 A CN 102276244A
- Authority
- CN
- China
- Prior art keywords
- graphene
- nano composite
- ferrite
- cobalt
- magnetic nano
- 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
Images
Abstract
The invention relates to an alcohol-heating method for preparing cobalt nickel ferrite / graphene magnetic nano composite powder. The method comprises steps of (1) dispersing graphite oxide and metal salts respectively to a glycol solution at a room temperature; after dissolving, adding polyethylene glycol and anhydrous sodium acetate into the metal salting liquid, stirring and mixing the graphite oxide solution and the metal salting liquid to form a reaction solution; (2) pouring the reaction solution into a reaction kettle, heating to 180-220 DEG C and reacting for 8-16h; after the reaction, cooling to a room temperature, collecting a product with a magnet, washing respectively with deionized water and absolute ethyl alcohol and drying to finish. A technology of the invention is simple, has low requirement of production equipment and is apt to industrialized production; besides, the prepared cobalt nickel ferrite / graphene magnetic nano composite powder compounds well with graphene, has good dispersibility on a graphene surface and in graphene layers, small resistivity, high magnetization intensity and promising application prospects.
Description
Technical field
The invention belongs to the preparation field of ferrite/Graphene magnetic Nano composite granule, the hot legal system of particularly a kind of alcohol is equipped with the method for cobalt Ni ferrite/Graphene magnetic Nano composite granule.
Background technology
Ferrite is the magneticsubstance of forming as some kinds of oxide compounds of main positive ion composition with ferric ion, and the ferrite of Fa Xianing is a magnetite the earliest, shows ferromagnetism.And utilize methods such as substitutional ion to improve ferritic light, electricity and magnetic property and the exploration novel material is the new problem of current investigation of materials.At present Chinese scholars is controlled the composition of Ferrite Material by modes such as doping, has obtained the Ferrite Material of different qualities, satisfies the different application requirement, for the Ferrite Material of studying novel extraordinary characteristic is laid a good foundation.And ferrite nano particles has physical influences such as surface effects, small-size effect, quantum size effect and macro quanta tunnel effect because of it, and the excellent magnetism energy, becomes the research focus.
The carbon material of the bi-dimensional cellular shape crystalline network that Graphene is made up of the monolayer carbon atom is a thinnest known material at present.Graphene has huge specific surface area (2630m
2g
-1), higher intrinsic mobility (200000cm
2v
-1s
-1), higher Young's modulus (～1.0TPa) and thermal conductivity (～5000Wm
-1K
-1), its light transmission rate is about 97.7%, and has outstanding electric property.In addition, Graphene also has some particular performances, as Hall effect, ferromegnetism, supraconductivity, quantum tunneling effect etc.Character that these are excellent and special two-dirnentional structure make Graphene become hot research in recent years, are expected to obtain widespread use in fields such as nano electron device, matrix material, energy storage and biomedicines.
Graphene functional composite material wherein combines the performance of Graphene and mixture, is a kind of novel multifunctional matrix material, has caused widely and has paid close attention to.Therefore ferrite/graphene nano the composite granule of ferrite and the compound preparation gained of Graphene also receives much concern.
In nearest research, Yu etc. have been reported to the method with high temperature reflux to prepare Graphene/Fe at Small 16 (2010) 169-173
3O
4Matrix material, Fe in this material
3O
4Particle diameter about 10nm, be evenly distributed in the graphene film surface.Its saturation magnetization can reach about 80 Gausses.Shen etc. have reported with the one kettle way solvent thermal synthetic on Journal of Alloys and Compounds506 (2010) 136-140, in GO and ferric acetyl acetonade, successively add ethylene glycol, hydrazine hydrate, in autoclave, heat, after the centrifuge washing drying, prepared Graphene/Fe
3O
4Szabo etc. by ion-exchange and calcining, have obtained the outstanding Graphene/Fe of electric property to three (2, the two pyridyl of 2-) iron (II) ion doping at the last report of Journalof Physics Chemistry 19 (2008) 14461-14469 in GO
3O
4Zhang etc. are after the last report of Journal of Materials Chemistry 20 (2010) 5538-5543 is peeled off the GO ultrasonic wave, with Fe (NO
3)
39H
2O, xitix, urea mix the back microwave radiation and reflux, and have obtained Fe
3O
4/ Graphene.
Yet the more and prepared Fe of method processing step for preparing ferrite/Graphene magnetic Nano composite granule at present
3O
4Easily reunite, still do not have the report of preparation multi-element doping ferrite/Graphene.Therefore seek a kind of simple and easy preparation crystalline phase pure, be difficult for reuniting, the method for multi-element doping ferrite/graphene nano composite granule that the specific magnetising moment is higher becomes the focus of research.Do not see at present and adopt pure hot legal system to be equipped with cobalt Ni ferrite (Co
1-xNi
xFe
2O
4The report of)/Graphene magnetic Nano composite granule.
Summary of the invention
Technical problem to be solved by this invention provides the method that the hot legal system of a kind of alcohol is equipped with cobalt Ni ferrite/Graphene magnetic Nano composite granule, and this method technology is simple, and is low to the production unit requirement, is easy to suitability for industrialized production; Prepared cobalt Ni ferrite/Graphene magnetic Nano composite granule and Graphene are compound good, good dispersity in Graphene surface and layer, and composite granule resistivity is little, specific magnetising moment height.
The hot legal system of a kind of alcohol of the present invention is equipped with the method for cobalt Ni ferrite/Graphene magnetic Nano composite granule, comprising:
(1) at room temperature, be distributed to 1: 1～1: 10 graphite oxide of mass ratio and metal-salt in the ethylene glycol solution respectively, wait to dissolve the back and in metal salt solution, add polyoxyethylene glycol and anhydrous sodium acetate, stir graphite oxide solution and metal salt solution and mixing, form reaction solution; Wherein, metal-salt is cobalt salt, nickel salt and molysite, Co
2+And Ni
2+Mol ratio be respectively Co 4: 1～1: 4
2+, Ni
2+Mole number sum and Fe
3+The ratio of mole number be 1: 2;
(2) above-mentioned reaction solution is poured in the reactor, be warming up to 180～220 ℃, reaction 8～16h; Reaction is cooled to room temperature after finishing, and collects product with magnet, uses deionized water and absolute ethanol washing respectively, and oven dry promptly.
Cobalt salt in the described step (1) is Co (NO
3)
26H
2O, nickel salt are Ni (NO
3)
26H
2O, molysite are FeCl
36H
2O.
The volume mass ratio of molysite is 200～500ml: 1g in ethylene glycol in the described step (1) and the metal-salt.
Molecular weight polyethylene glycol in the described step (1) is 200～1000, and add-on is 1/50～1/25 of an ethylene glycol volume.
The mol ratio of molysite is 8: 1～12: 1 in anhydrous sodium acetate in the described step (1) and the metal-salt.
Graphite oxide solution ultrasonic agitation in the described step (1), power is 200～400W, the time is 30～60min, the metal salt solution magnetic agitation, rotating speed is 300～600 commentaries on classics/min, and the time is 20～40min, and mixed solution is with 300～600 commentaries on classics/min magnetic agitation, 20～40min.
Bake out temperature in the described step (2) is 60～80 ℃, and the time is 12～24h.
By regulating the ratio of graphite oxide, metal-salt, obtain the different cobalt Ni ferrite (Co that form
1-xNi
xFe
2O
4)/Graphene magnetic Nano composite granule.
This preparation method is with respect to common liquid phase method, and magnetic nanoparticle is more stable in organic phase, is difficult for generating the impurity phase.Because in liquid phase, magnetic nano-particle is very easily reunited because of the effect that is subjected to solion intensive electrostatic attraction, so present method selects electrostatic stabilization for use good anhydrous sodium acetate adds as alkaline reagents, to prevent Co
1-xNi
xFe
2O
4Extensive reunion.
Beneficial effect
(1) preparation method's technology of the present invention is simple, and is low to the production unit requirement, is easy to suitability for industrialized production;
(2) the prepared cobalt Ni ferrite (Co of the present invention
1-xNi
xFe
2O
4Co in the)/Graphene magnetic Nano composite granule
1-xNi
xFe
2O
4Crystalline phase is pure, be difficult for reuniting, and is compound good with Graphene, good dispersity in Graphene surface and layer, and composite granule resistivity is little, and specific magnetising moment height has a good application prospect.
Description of drawings
Fig. 1 is the stereoscan photograph of embodiment 1 synthetic cobalt Ni ferrite/Graphene magnetic Nano composite granule;
Fig. 2 is the X-ray diffractogram of embodiment 2 synthetic cobalt Ni ferrite/Graphene magnetic Nano composite granules;
Fig. 3 is the magnetic hysteresis loop figure of embodiment 5 synthetic cobalt Ni ferrite/Graphene magnetic Nano composite granules.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
Take by weighing the 55mg graphite oxide, put into the 50ml beaker, add 25ml ethylene glycol again, ultrasonic agitation power 200W stirred 30min after glass stick stirred.Take by weighing 15.4mg Cobaltous nitrate hexahydrate, 3.85mg Nickelous nitrate hexahydrate, 35.8mg six Ferric Chloride Hydrateds, put in the 50ml beaker, add 25ml ethylene glycol therein, add 146mg anhydrous sodium acetate, 1ml Macrogol 200 again, add magneton, magnetic agitation 300 commentaries on classics/min stir 40mim.After treating to dissolve fully graphite oxide solution and metal salt solution are mixed continuation magnetic agitation 300 commentaries on classics/min stirring 40min.After mixing, above-mentioned reaction solution is poured in the reactor, be warming up to 200 ℃, reaction 12h.Reaction is collected product with magnet after finishing, and with deionized water and dehydrated alcohol difference washed product, with product dry 12h under 60 ℃, obtains cobalt Ni ferrite (Co then
1-xNi
xFe
2O
4) (0＜x＜1)/Graphene magnetic Nano composite granule.The XRD test result shows: the nano particle in this composite granule is Co
0.8Ni
0.2Fe
2O
4Fig. 1 is a present embodiment synthetic stereoscan photograph, from this photo as can be seen: Co
0.8Ni
0.2Fe
2O
4The Nano microsphere particle diameter is at 50～100nm, a large amount of Co
0.8Ni
0.2Fe
2O
4Nano microsphere is evenly distributed on the Graphene lamella.Magnetic hysteresis loop figure test shows: this composite granule has good magnetic performance.Resistivity measurement is the result show: this composite granule resistivity is 0.620 Ω/m, and it has excellent conducting performance.
Embodiment 2
Take by weighing the 55mg graphite oxide, put into the 50ml beaker, add 18ml ethylene glycol again, ultrasonic agitation power was that 200W stirs 60min after glass stick stirred.Take by weighing 77.0mg Cobaltous nitrate hexahydrate, 19.2mg Nickelous nitrate hexahydrate, 179mg six Ferric Chloride Hydrateds, join in the 50ml beaker, add 18ml ethylene glycol, add 810mg anhydrous sodium acetate, 1ml poly(oxyethylene glycol) 400 again, add magneton, magnetic agitation 400 commentaries on classics/min stir 40mim.After treating to dissolve fully graphite oxide solution and metal salt solution are mixed continuation magnetic agitation 400 commentaries on classics/min stirring 40min.After mixing, above-mentioned reaction solution is poured in the reactor, be warming up to 220 ℃, reaction 8h.Reaction is collected product with magnet after finishing, and with deionized water and dehydrated alcohol difference washed product, with product dry 24h under 60 ℃, obtains cobalt Ni ferrite (Co then
1-xNi
xFe
2O
4) (0＜x＜1)/Graphene magnetic Nano composite granule.Fig. 2 is the X-ray diffractogram of present embodiment synthetic powder, and the diffraction peak among the figure shows: the nano particle in this composite granule is Co
0.8Ni
0.2Fe
2O
4Magnetic hysteresis loop figure test shows: this composite granule has good magnetic performance.Resistivity measurement is the result show: this composite granule has excellent conducting performance.
Embodiment 3
Take by weighing the 55mg graphite oxide, put into the 50ml beaker, add 36ml ethylene glycol again, ultrasonic agitation power was that 300W stirs 60min after glass stick stirred.Take by weighing 38.5mg Cobaltous nitrate hexahydrate, 57.7mg Nickelous nitrate hexahydrate, 179mg six Ferric Chloride Hydrateds, put in the 50ml beaker, add 36ml ethylene glycol, add 1.1g anhydrous sodium acetate, 0.6ml Polyethylene Glycol-600 again, add magneton, magnetic agitation 500 commentaries on classics/min stir 30mim.After treating to dissolve fully graphite oxide solution and metal salt solution are mixed continuation magnetic agitation 500 commentaries on classics/min stirring 30min.After mixing, above-mentioned reaction solution is poured in the reactor, be warming up to 180 ℃, reaction 16h.Reaction is collected product with magnet after finishing, and with deionized water and dehydrated alcohol difference washed product, with product dry 18h under 70 ℃, obtains cobalt Ni ferrite (Co then
1-xNi
xFe
2O
4) (0＜x＜1)/Graphene magnetic Nano composite granule.The XRD test result shows: the nano particle in this composite granule is Co
0.4Ni
0.6Fe
2O
4Magnetic hysteresis loop figure test shows: this composite granule has good magnetic performance.Resistivity measurement is the result show: this composite granule has excellent conducting performance.
Embodiment 4
Take by weighing the 55mg graphite oxide, put into the 100ml beaker, add 45ml ethylene glycol again, ultrasonic agitation power was that 400W stirs 50min after glass stick stirred.Take by weighing 19.3mg Cobaltous nitrate hexahydrate, 77.0mg Nickelous nitrate hexahydrate, 179mg six Ferric Chloride Hydrateds, put in the 100ml beaker, add 45ml ethylene glycol, add 1.2mg anhydrous sodium acetate, 1.5ml polyoxyethylene glycol 800 again, add magneton, magnetic agitation 400 commentaries on classics/min stir 30mim.After treating to dissolve fully graphite oxide solution and metal salt solution are mixed continuation magnetic agitation 400 commentaries on classics/min stirring 30min.After mixing, above-mentioned reaction solution is poured in the reactor, be warming up to 200 ℃, reaction 14h.Reaction is collected product with magnet after finishing, and with deionized water and dehydrated alcohol difference washed product, with product dry 12h under 80 ℃, obtains cobalt Ni ferrite (Co then
1-xNi
xFe
2O
4) (0＜x＜1)/Graphene magnetic Nano composite granule.The XRD test result shows: the nano particle in this composite granule is Co
0.2Ni
0.8Fe
2O
4Magnetic hysteresis loop figure test shows: this composite granule has good magnetic performance.Resistivity measurement is the result show: this composite granule has excellent conducting performance.
Embodiment 5
Take by weighing the 55mg graphite oxide, put into the 100ml beaker, add 35ml ethylene glycol again, ultrasonic agitation power was that 400W stirs 60min after glass stick stirred.Take by weighing 154mg Cobaltous nitrate hexahydrate, 38.5mg Nickelous nitrate hexahydrate, 356mg six Ferric Chloride Hydrateds, put in the 100ml beaker, add 35ml ethylene glycol, add 1.4g anhydrous sodium acetate, 2ml cetomacrogol 1000 again, add magneton, magnetic agitation 600 commentaries on classics/min stir 40mim.After treating to dissolve fully graphite oxide solution and metal salt solution are mixed continuation magnetic agitation 600 commentaries on classics/min stirring 40min.After mixing, above-mentioned reaction solution is poured in the reactor, be warming up to 220 ℃, reaction 12h.Reaction is collected product with magnet after finishing, and with deionized water and dehydrated alcohol difference washed product, with product dry 12h under 80 ℃, obtains cobalt Ni ferrite (Co then
1-xNi
xFe
2O
4) (0＜x＜1)/Graphene magnetic Nano composite granule.The XRD test result shows: the nano particle in this composite granule is Co
0.8Ni
0.2Fe
2O
4Fig. 3 is the magnetic hysteresis loop figure of present embodiment synthetic powder, and as can be seen: the specific magnetising moment of this composite granule is higher, reaches 52.5emu/g.Resistivity measurement is the result show: this composite granule has excellent conducting performance.
Claims (7)
1. the hot legal system of alcohol is equipped with the method for cobalt Ni ferrite/Graphene magnetic Nano composite granule, comprising:
(1) at room temperature, be distributed to 1: 1～1: 10 graphite oxide of mass ratio and metal-salt in the ethylene glycol solution respectively, wait to dissolve the back and in metal salt solution, add polyoxyethylene glycol and anhydrous sodium acetate, stir graphite oxide solution and metal salt solution and mixing, form reaction solution; Wherein, metal-salt is cobalt salt, nickel salt and molysite, Co
2+And Ni
2+Mol ratio be respectively Co 4: 1～1: 4
2+, Ni
2+Mole number sum and Fe
3+The ratio of mole number be 1: 2;
(2) above-mentioned reaction solution is poured in the reactor, be warming up to 180～220 ℃, reaction 8～16h; Reaction is cooled to room temperature after finishing, and collects product with magnet, uses deionized water and absolute ethanol washing respectively, and oven dry promptly.
2. the hot legal system of a kind of alcohol according to claim 1 is equipped with the method for cobalt Ni ferrite/Graphene magnetic Nano composite granule, it is characterized in that: the cobalt salt in the described step (1) is Co (NO
3)
26H
2O, nickel salt are Ni (NO
3)
26H
2O, molysite are FeCl
36H
2O.
3. the hot legal system of a kind of alcohol according to claim 1 is equipped with the method for cobalt Ni ferrite/Graphene magnetic Nano composite granule, it is characterized in that: the volume mass ratio of molysite is 200～500ml: 1g in the ethylene glycol in the described step (1) and the metal-salt.
4. the hot legal system of a kind of alcohol according to claim 1 is equipped with the method for cobalt Ni ferrite/Graphene magnetic Nano composite granule, it is characterized in that: the molecular weight polyethylene glycol in the described step (1) is 200～1000, and add-on is 1/50～1/25 of an ethylene glycol volume.
5. the hot legal system of a kind of alcohol according to claim 1 is equipped with the method for cobalt Ni ferrite/Graphene magnetic Nano composite granule, it is characterized in that: the mol ratio of molysite is 8: 1～12: 1 in anhydrous sodium acetate in the described step (1) and the metal-salt.
6. the hot legal system of a kind of alcohol according to claim 1 is equipped with the method for cobalt Ni ferrite/Graphene magnetic Nano composite granule, it is characterized in that: graphite oxide solution ultrasonic agitation in the described step (1), power is 200～400W, time is 30～60min, the metal salt solution magnetic agitation, rotating speed is 300～600 commentaries on classics/min, and the time is 20～40min, and mixed solution is with 300～600 commentaries on classics/min magnetic agitation, 20～40min.
7. the hot legal system of a kind of alcohol according to claim 1 is equipped with the method for cobalt Ni ferrite/Graphene magnetic Nano composite granule, it is characterized in that: the bake out temperature in the described step (2) is 60～80 ℃, and the time is 12～24h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101348244A CN102276244A (en) | 2011-05-19 | 2011-05-19 | Alcohol-heating method for preparing cobalt nickel ferrite / graphene magnetic nano composite powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101348244A CN102276244A (en) | 2011-05-19 | 2011-05-19 | Alcohol-heating method for preparing cobalt nickel ferrite / graphene magnetic nano composite powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102276244A true CN102276244A (en) | 2011-12-14 |
Family
ID=45102040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101348244A Pending CN102276244A (en) | 2011-05-19 | 2011-05-19 | Alcohol-heating method for preparing cobalt nickel ferrite / graphene magnetic nano composite powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102276244A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103571432A (en) * | 2013-11-22 | 2014-02-12 | 北京理工大学 | Ferrite hollow sphere-graphene composite wave-absorbing material and preparation method thereof |
| CN104240972A (en) * | 2014-09-11 | 2014-12-24 | 江苏大学 | Method for manufacturing porous flaky NiCo2O4 and grapheme composite capacitive material |
| CN104941543A (en) * | 2015-06-19 | 2015-09-30 | 电子科技大学 | Method for preparing graphene/ferrite composite nanometer microspheres having high magnetic-electric performances |
| CN105295832A (en) * | 2014-07-25 | 2016-02-03 | 南京理工大学 | Preparation method for reduced graphene oxide/Ni-Co ternary composite wave-absorbing material |
| CN105329851A (en) * | 2015-11-02 | 2016-02-17 | 杭州电子科技大学 | Preparation method of nano iron oxide-multilayered graphene composite material |
| CN109364925A (en) * | 2018-09-27 | 2019-02-22 | 中国科学院广州能源研究所 | A kind of catalysis phenolic compound hydrogenation deoxidation prepares catalyst of cycloalkane and preparation method thereof |
| CN109936974A (en) * | 2019-04-03 | 2019-06-25 | 厦门大学 | A kind of synthetic method of sandwich structure CoFe@C/ graphene electromagnetic wave absorbent material |
| CN110828788A (en) * | 2019-10-09 | 2020-02-21 | 中国科学院福建物质结构研究所 | Porous NiFe2O4Graphene composite material and preparation method and application thereof |
| CN111069591A (en) * | 2018-10-22 | 2020-04-28 | 哈尔滨工业大学（威海） | Preparation method of nickel-cobalt alloy particle modified graphene micro-sheet wave-absorbing composite powder |
| CN111099663A (en) * | 2019-11-28 | 2020-05-05 | 山西大学 | Nickel-cobalt oxide-graphene compound and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101837971A (en) * | 2010-05-14 | 2010-09-22 | 东华大学 | Method for preparing graphene/Fe3O4 composite powder by alcohol thermal method |
| CN101891483A (en) * | 2010-07-09 | 2010-11-24 | 东华大学 | Method for preparing Co1-xNixFe2O4 magnetic nano-powder by solvothermal method |
-
2011
- 2011-05-19 CN CN2011101348244A patent/CN102276244A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101837971A (en) * | 2010-05-14 | 2010-09-22 | 东华大学 | Method for preparing graphene/Fe3O4 composite powder by alcohol thermal method |
| CN101891483A (en) * | 2010-07-09 | 2010-11-24 | 东华大学 | Method for preparing Co1-xNixFe2O4 magnetic nano-powder by solvothermal method |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103571432A (en) * | 2013-11-22 | 2014-02-12 | 北京理工大学 | Ferrite hollow sphere-graphene composite wave-absorbing material and preparation method thereof |
| CN105295832A (en) * | 2014-07-25 | 2016-02-03 | 南京理工大学 | Preparation method for reduced graphene oxide/Ni-Co ternary composite wave-absorbing material |
| CN104240972B (en) * | 2014-09-11 | 2018-12-14 | 江苏大学 | A kind of porous flake NiCo2O4The preparation method of/graphene complex capacitance material |
| CN104240972A (en) * | 2014-09-11 | 2014-12-24 | 江苏大学 | Method for manufacturing porous flaky NiCo2O4 and grapheme composite capacitive material |
| CN104941543A (en) * | 2015-06-19 | 2015-09-30 | 电子科技大学 | Method for preparing graphene/ferrite composite nanometer microspheres having high magnetic-electric performances |
| CN105329851A (en) * | 2015-11-02 | 2016-02-17 | 杭州电子科技大学 | Preparation method of nano iron oxide-multilayered graphene composite material |
| CN105329851B (en) * | 2015-11-02 | 2017-02-01 | 杭州电子科技大学 | Preparation method of nano iron oxide-multilayered graphene composite material |
| CN109364925A (en) * | 2018-09-27 | 2019-02-22 | 中国科学院广州能源研究所 | A kind of catalysis phenolic compound hydrogenation deoxidation prepares catalyst of cycloalkane and preparation method thereof |
| CN109364925B (en) * | 2018-09-27 | 2021-08-10 | 中国科学院广州能源研究所 | Catalyst for catalyzing phenol compound to prepare cycloparaffin through hydrodeoxygenation and preparation method thereof |
| CN111069591A (en) * | 2018-10-22 | 2020-04-28 | 哈尔滨工业大学（威海） | Preparation method of nickel-cobalt alloy particle modified graphene micro-sheet wave-absorbing composite powder |
| CN109936974A (en) * | 2019-04-03 | 2019-06-25 | 厦门大学 | A kind of synthetic method of sandwich structure CoFe@C/ graphene electromagnetic wave absorbent material |
| CN110828788A (en) * | 2019-10-09 | 2020-02-21 | 中国科学院福建物质结构研究所 | Porous NiFe2O4Graphene composite material and preparation method and application thereof |
| CN111099663A (en) * | 2019-11-28 | 2020-05-05 | 山西大学 | Nickel-cobalt oxide-graphene compound and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102276244A (en) | Alcohol-heating method for preparing cobalt nickel ferrite / graphene magnetic nano composite powder | |
| CN101837971B (en) | Method for preparing graphene/Fe3O4 composite powder by alcohol thermal method | |
| CN102515284B (en) | Preparation method for Fe3O4/graphene composite powder | |
| CN102173411B (en) | Preparation method of water-dispersible graphene/ferroferric oxide (Fe3O4) composite powder | |
| CN103117389B (en) | Nickel-cobalt oxide/graphene composite material as well as preparation method and application thereof | |
| CN101337695B (en) | Method for preparing grain size adjustable nanometer ferroferric oxide microballoons by microwave | |
| CN101481107B (en) | Preparation of nickel-zine ferrite (Ni1-xZnxFe2O4) coated carbon nano-tube magnetic nano composite material | |
| Li et al. | Mn3O4 nanocrystals: facile synthesis, controlled assembly, and application | |
| Xu et al. | γ-Fe2O3 and Fe3O4 magnetic hierarchically nanostructured hollow microspheres: Preparation, formation mechanism, magnetic property, and application in water treatment | |
| CN102161764B (en) | Method for preparing cobalt-zinc ferrite/polypyrrole nano composite material | |
| CN104659359B (en) | A kind of lithium ion cell nano piece is overlapped piles up cube Mn(3‑x)CoxO4The preparation method of negative material | |
| CN101800105A (en) | Method for preparing MWCNTs/Co1-xZnxFe2O4 magnetic nanocomposite material | |
| CN105060351B (en) | Flower-like cobaltosic oxide material composed of nanoparticles and preparation method thereof | |
| CN101891483B (en) | Method for preparing Co1-xNixFe2O4 magnetic nano-powder by solvothermal method | |
| CN101499341A (en) | Preparation of carbon nano-tube(MWCNTs)/manganese-zinc ferrite(Mn1-xZnxFe2O4) magnetic nano material by alcohol-thermal method | |
| CN108461727A (en) | A kind of graphene containing transition metal oxalates lithium ion battery negative material and preparation method thereof | |
| CN102229425B (en) | Method for preparing cobalt/graphene composite material by alcohol thermal method | |
| Chen et al. | Preparation of NiO and CoO nanoparticles using M2+-oleate (M= Ni, Co) as precursor | |
| CN101560101A (en) | Method for preparing cobalt zinc ferrite (CoxZn1-xFe2O4) magnetic nano powder by using alcohol thermal method | |
| CN108440766A (en) | A kind of cobalt metal-organic framework materials and its preparation method and application | |
| Li | Glycol-assisted autocombustion synthesis of spinel ferrite CoFe 2 O 4 nanoparticles: magnetic and electrochemical performances | |
| CN102786075B (en) | Preparation method of flower-like nanometer copper oxide powder | |
| CN103183343A (en) | Preparation method of aminated magnetic graphene | |
| Zhang et al. | A facile strategy of constructing composite form-stable phase change materials with superior high thermal conductivity using silicagel industrial wastes | |
| CN101367541A (en) | Synthesis of nano- copper sulfide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111214 |