CN103632796A - Method for preparing polyaniline coated CoFe2O4 nanoparticle magnetic liquid - Google Patents

Method for preparing polyaniline coated CoFe2O4 nanoparticle magnetic liquid Download PDF

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CN103632796A
CN103632796A CN201310636008.2A CN201310636008A CN103632796A CN 103632796 A CN103632796 A CN 103632796A CN 201310636008 A CN201310636008 A CN 201310636008A CN 103632796 A CN103632796 A CN 103632796A
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polyaniline
cofe
magnetic liquid
particle
water
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CN103632796B (en
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谢宇
潘建飞
乐长高
张秋根
黄彦
李凤
刘福明
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East China Institute of Technology
Nanchang Hangkong University
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Nanchang Hangkong University
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Abstract

The invention discloses a method for preparing polyaniline coated CoFe2O4 nanoparticle magnetic liquid. According to the method, CoFe2O4 particles are coated with polyaniline by a surface in-situ synthesis method, so as to reach the effect that CoFe2O4 nanoparticles are firmly wrapped by polyaniline; the method specifically comprises the steps of firstly preparing the CoFe2O4 nanoparticles by adopting a coprecipitation method, then, preparing CoFe2O4 ionic magnetic liquid from the prepared CoFe2O4 nanoparticles, then, carrying out in-situ polymerization by adding aniline monomers and an initiator into the CoFe2O4 ionic magnetic liquid so as to obtain CoFe2O4 magnetic nanoparticles which are excellently coated by polyaniline, and finally, preparing the polyaniline coated CoFe2O4 nanoparticle magnetic liquid from CoFe2O4/polyaniline composite particles. Compared with the ordinary magnetic liquid, the regular change of the magnetic liquid in the aspect of photoelectric properties is more obvious, so that the aim of controllably adjusting the performance index of the magnetic liquid in the aspect of photoelectricity through adjusting magnetic field strength is easier to reach finally.

Description

A kind of polyaniline-coated nano Co Fe 2o 4the preparation method of particle magnetic liquid
Technical field
The preparation method who the present invention relates to a kind of conducting polymer parcel nano magnetic particle magnetic liquid, relates in particular to a kind of polyaniline-coated nano Co Fe 2o 4the preparation method of particle magnetic liquid.
Background technology
Magnetic liquid refers to nano magnetic particle highly dispersed that size magnitude is less than single magnetic domain in liquid base load liquid and the colloidal solution of a kind of high stability forming, the dispersant of general magnetic liquid is organic polymer chain, do not possess special performance, once and superscribe after one deck organic semiconductor at original nano magnetic particle and dispersant joining place in magnetic liquid, a kind of novel organic inorganic hybridization magnetic liquid just arises at the historic moment, organic semiconductor is by after organically combining with magnetic liquid, organic semi-conductor performance just can change by regulating magnetic field intensity to make magnetic liquid possess regular photoelectric properties, this magnetic liquid is by selecting cobalt ferrite doped calcium to do magnetic-particle, magnetic behavior improves and the performance change that brings is more obvious again, therefore such Magnetic Fluids has great potential in the application in the fields such as micro-optic device and photonic crystal.
But the preparation of this class magnetic liquid need to overcome three difficult points: the one, and the optimum doping ratio of ferrite doped calcium; The 2nd, the size magnitude of conducting polymer integument is controlled; The 3rd, how stable dispersion is in base load liquid for the nano magnetic particle after parcel.Its magnetic-particle surface of magnetic liquid existing is at present all common organic long-chain molecules, except the essential characteristic that some magnetic liquids possess, there is no other unique features.
Summary of the invention
The object of this invention is to provide a kind of polyaniline-coated nano Co Fe 2o 4the preparation method of particle magnetic liquid, adopts coprecipitation first to prepare CoFe 2o 4nano particle, prepares CoFe with obtained nano particle subsequently 2o 4ionic ferrofluid, then at CoFe 2o 4in ionic ferrofluid, add aniline monomer and initator in-situ polymerization to obtain the good clad nano CoFe of polyaniline 2o 4magnetic particle, finally uses CoFe 2o 4/ polyaniline composite particles is prepared polyaniline-coated nano Co Fe 2o 4magnetic particle magnetic liquid.Overcome the optimum doping ratio of ferrite doped calcium, the size magnitude of conducting polymer integument is controlled, how stable dispersion is in three difficult points of base load liquid for the nano magnetic particle after parcel simultaneously.
A kind of polyaniline-coated nano Co Fe 2o 4the preparation method of particle magnetic liquid, concrete steps are as follows:
A, get Co (NO 3) 26H 2o adds water to after 10ml dissolving, adds 4.17ml12mol/L hydrochloric acid wiring solution-forming 1., gets NaOH and adds water to 500ml wiring solution-forming 2., gets Fe (NO 3) 39H 23. O adds water to 500ml wiring solution-forming, gets FeCl 36H 2after O adds water to 40ml and dissolves, join 1., after stirring, by 2. also adding wherein of preparing, water-bath boiling 3-7 minute, then magnetic is separated to the cooling 75-85 minute of nature, with deionized water, is washed till pH=7;
B, 3. solution joined in the washed wet-milling of upper step, after stirring, water-bath boiling 25-35 minute, then naturally cools to room temperature, removes after solution supernatant, with acetone, washes after three times, natural drying, finally obtains CoFe 2o 4product;
C, salpeter solution is joined to CoFe 2o 4in, rock it is uniformly dispersed, obtain magnetic liquid, sealing and standing slaking 14-16 days;
D, in 90-110ml deionized water, add the magnetic liquid of slaking to stir it is fully disperseed, add aniline monomer, add again 8% watery hydrochloric acid and the 10% PEG400 aqueous solution stirring reaction 5.5-6.5 hour that are dissolved with ammonium persulfate, purify the to obtain CoFe of polyaniline parcel of product removal of impurities 2o 4/ polyaniline composite particles.
E, get CoFe 2o 4/ polyaniline composite particles, adds 0-1ml absolute ethyl alcohol and 7-10ml deionized water, and vibration shakes up slaking, obtains polyaniline-coated nano Co Fe 2o 4particle magnetic liquid.
The mol ratio of above-mentioned each material is as follows: Co (NO 3) 26H 2o:Fe (NO 3) 39H 2o:FeCl 36H 2o: NaOH: nitric acid: aniline monomer: ammonium persulfate: PEG400=1:5:2:18.5:3:0.75:3:0.25.
A kind of polyaniline-coated nano Co Fe 2o 4the preparation method of particle magnetic liquid, the concrete steps of optimization are as follows:
A, get 5.88g Co (NO 3) 26H 2o adds water to after 10ml dissolving, adds 4.17ml12mol/L hydrochloric acid wiring solution-forming 1., gets 14.6gNaOH and adds water to 500ml wiring solution-forming 2., gets 41gFe (NO 3) 39H 23. O adds water to 500ml wiring solution-forming, gets 10.92g FeCl 36H 2after O adds water to 40ml and dissolves, join 1., after stirring, by 2. also adding wherein of preparing, water-bath boiling 3-7 minute, then magnetic is separated to the cooling 75-85 minute of nature, with deionized water, is washed till pH=7;
B, 3. solution joined in the washed wet-milling of upper step, after stirring, water-bath boiling 25-35 minute, then naturally cools to room temperature, removes after solution supernatant, with acetone, washes after three times, natural drying, finally obtains CoFe 2o 4product 4.8g;
C, take 3g CoFe 2o 4, the nitric acid 0.42ml that measures 15mol/L is made into 38ml salpeter solution and joins the CoFe weighing up 2o 4in, rock it is uniformly dispersed, obtain magnetic liquid, sealing and standing slaking 14-16 days;
D, in 90-110ml deionized water, add the magnetic liquid of slaking to stir it is fully disperseed, add 2ml aniline monomer, add again the 8% watery hydrochloric acid 60ml and the 10% PEG400 aqueous solution 10ml stirring reaction 5.5-6.5 hour that are dissolved with 14g ammonium persulfate, purify the to obtain CoFe of polyaniline parcel of product removal of impurities 2o 4/ polyaniline composite particles.
E, get 1 gram of CoFe 2o 4/ polyaniline composite particles, adds 0-1ml absolute ethyl alcohol and 7-10ml deionized water, and vibration shakes up slaking, obtains polyaniline-coated nano Co Fe 2o 4particle magnetic liquid.
Advantage of the present invention is: the present invention passes through surface in situ synthetic method by nano Co Fe 2o 4particle polyaniline-coated, reaches polyaniline and well wraps up CoFe 2o 4the effect of nano particle, by mathematical computations aniline monomer quantity, is aided with polymerization inhibitor and accurately controls the degree of polymerization, and the size magnitude of conducting polymer integument is controlled at 10-20 nanometer, thereby reach, controls CoFe 2o 4the effect of/polyaniline composite particles particle diameter, obtains magnetic liquid, and the nano magnetic particle stable dispersion after parcel (is placed and do not sunk for six months) in base load liquid.
Embodiment
In conjunction with foregoing invention content, provide following case study on implementation.
Embodiment 1:
A kind of polyaniline-coated nano Co Fe 2o 4the preparation method of particle magnetic liquid, concrete steps are as follows:
A, get 5.88g Co (NO 3) 26H 2o adds water to after 10ml dissolving, adds 4.17ml12mol/L hydrochloric acid wiring solution-forming 1., gets 14.6gNaOH and adds water to 500ml wiring solution-forming 2., gets 41gFe (NO 3) 39H 23. O adds water to 500ml wiring solution-forming, gets 10.92g FeCl 36H 2after O adds water to 40ml and dissolves, join 1., after stirring, by 2. also adding wherein of preparing, water-bath boiling 3 minutes, then magnetic is separated to nature cooling 75 minutes, with deionized water, is washed till pH=7;
B, 3. solution joined in the washed wet-milling of upper step, after stirring, water-bath boiling 25 minutes, then naturally cools to room temperature, removes after solution supernatant, with acetone, washes after three times, natural drying, finally obtains CoFe 2o 4product 4.8g;
C, take 3g CoFe 2o 4, the nitric acid 0.42ml that measures 15mol/L is made into 38ml salpeter solution and joins the CoFe weighing up 2o 4in, rock it is uniformly dispersed, obtain magnetic liquid, sealing and standing slaking 14 days;
D, in 90-110ml deionized water, add the magnetic liquid of slaking to stir it is fully disperseed, add 2ml aniline monomer, add again and be dissolved with 8% watery hydrochloric acid 60ml of 14g ammonium persulfate and 10% PEG400 aqueous solution 10ml stirring reaction 5.5 hours, purify the to obtain CoFe of polyaniline parcel of product removal of impurities 2o 4/ polyaniline composite particles.
E, get 1 gram of CoFe 2o 4/ polyaniline composite particles, adds 7 deionized waters, and vibration shakes up slaking, obtains polyaniline-coated nano Co Fe 2o 4particle magnetic liquid.
Embodiment 2:
A kind of polyaniline-coated nano Co Fe 2o 4the preparation method of particle magnetic liquid, concrete steps are as follows:
A, get 5.88g Co (NO 3) 26H 2o adds water to after 10ml dissolving, adds 4.17ml12mol/L hydrochloric acid wiring solution-forming 1., gets 14.6gNaOH and adds water to 500ml wiring solution-forming 2., gets 41gFe (NO 3) 39H 23. O adds water to 500ml wiring solution-forming, gets 10.92g FeCl 36H 2after O adds water to 40ml and dissolves, join 1., after stirring, by 2. also adding wherein of preparing, water-bath boiling 5 minutes, then magnetic is separated to nature cooling 80 minutes, with deionized water, is washed till pH=7;
B, 3. solution joined in the washed wet-milling of upper step, after stirring, water-bath boiling 30 minutes, then naturally cools to room temperature, removes after solution supernatant, with acetone, washes after three times, natural drying, finally obtains CoFe 2o 4product 4.8g;
C, take 3g CoFe 2o 4, the nitric acid 0.42ml that measures 15mol/L is made into 38ml salpeter solution and joins the CoFe weighing up 2o 4in, rock it is uniformly dispersed, obtain magnetic liquid, sealing and standing slaking 15 days;
D, in 100ml deionized water, add the magnetic liquid of slaking to stir it is fully disperseed, add 2ml aniline monomer, add again and be dissolved with 8% watery hydrochloric acid 60ml of 14g ammonium persulfate and 10% PEG400 aqueous solution 10ml stirring reaction 6 hours, purify the to obtain CoFe of polyaniline parcel of product removal of impurities 2o 4/ polyaniline composite particles.
E, get 1 gram of CoFe 2o 4/ polyaniline composite particles, adds 0.5ml absolute ethyl alcohol and 8ml deionized water, and vibration shakes up slaking, obtains polyaniline-coated nano Co Fe 2o 4particle magnetic liquid.
Embodiment 3:
A kind of polyaniline-coated nano Co Fe 2o 4the preparation method of particle magnetic liquid, concrete steps are as follows:
A, get 5.88g Co (NO 3) 26H 2o adds water to after 10ml dissolving, adds 4.17ml12mol/L hydrochloric acid wiring solution-forming 1., gets 14.6gNaOH and adds water to 500ml wiring solution-forming 2., gets 41gFe (NO 3) 39H 23. O adds water to 500ml wiring solution-forming, gets 10.92g FeCl 36H 2after O adds water to 40ml and dissolves, join 1., after stirring, by 2. also adding wherein of preparing, water-bath boiling 7 minutes, then magnetic is separated to nature cooling 85 minutes, with deionized water, is washed till pH=7;
B, 3. solution joined in the washed wet-milling of upper step, after stirring, water-bath boiling 35 minutes, then naturally cools to room temperature, removes after solution supernatant, with acetone, washes after three times, natural drying, finally obtains CoFe 2o 4product 4.8g;
C, take 3g CoFe 2o 4, the nitric acid 0.42ml that measures 15mol/L is made into 38ml salpeter solution and joins the CoFe weighing up 2o 4in, rock it is uniformly dispersed, obtain magnetic liquid, sealing and standing slaking 16 days;
D, in 110ml deionized water, add the magnetic liquid of slaking to stir it is fully disperseed, add 2ml aniline monomer, add again and be dissolved with 8% watery hydrochloric acid 60ml of 14g ammonium persulfate and 10% PEG400 aqueous solution 10ml stirring reaction 6.5 hours, purify the to obtain CoFe of polyaniline parcel of product removal of impurities 2o 4/ polyaniline composite particles.
E, get 1 gram of CoFe 2o 4/ polyaniline composite particles, adds 1ml absolute ethyl alcohol and 10ml deionized water, and vibration shakes up slaking, obtains polyaniline-coated nano Co Fe 2o 4particle magnetic liquid.
Embodiment 4:
A kind of polyaniline-coated nano Co Fe 2o 4the preparation method of particle magnetic liquid, concrete steps are as follows:
A, get 5.88g Co (NO 3) 26H 2o adds water to after 10ml dissolving, adds 4.17ml12mol/L hydrochloric acid wiring solution-forming 1., gets 14.6gNaOH and adds water to 500ml wiring solution-forming 2., gets 41gFe (NO 3) 39H 23. O adds water to 500ml wiring solution-forming, gets 10.92g FeCl 36H 2after O adds water to 40ml and dissolves, join 1., after stirring, by 2. also adding wherein of preparing, water-bath boiling 2 minutes, then magnetic is separated to nature cooling 70 minutes, with deionized water, is washed till pH=7;
B, 3. solution joined in the washed wet-milling of upper step, after stirring, water-bath boiling 20 minutes, then naturally cools to room temperature, removes after solution supernatant, with acetone, washes after three times, natural drying, finally obtains CoFe 2o 4product 4.8g;
C, take 3g CoFe 2o 4, the nitric acid 0.42ml that measures 15mol/L is made into 38ml salpeter solution and joins the CoFe weighing up 2o 4in, rock it is uniformly dispersed, obtain magnetic liquid, sealing and standing slaking 12 days;
D, in 85ml deionized water, add the magnetic liquid of slaking to stir it is fully disperseed, add 2ml aniline monomer, add again and be dissolved with 8% watery hydrochloric acid 60ml of 14g ammonium persulfate and 10% PEG400 aqueous solution 10ml stirring reaction 5 hours, purify the to obtain CoFe of polyaniline parcel of product removal of impurities 2o 4/ polyaniline composite particles.
E, get 1 gram of CoFe 2o 4/ polyaniline composite particles, adds 6ml deionized water, and vibration shakes up slaking, obtains polyaniline-coated nano Co Fe 2o 4particle magnetic liquid.
Embodiment 5:
A kind of polyaniline-coated nano Co Fe 2o 4the preparation method of particle magnetic liquid, the concrete steps of optimization are as follows:
A, get 5.88g Co (NO 3) 26H 2o adds water to after 10ml dissolving, adds 4.17ml12mol/L hydrochloric acid wiring solution-forming 1., gets 14.6gNaOH and adds water to 500ml wiring solution-forming 2., gets 41gFe (NO 3) 39H 23. O adds water to 500ml wiring solution-forming, gets 10.92g FeCl 36H 2after O adds water to 40ml and dissolves, join 1., after stirring, by 2. also adding wherein of preparing, water-bath boiling 8 minutes, then magnetic is separated to nature cooling 90 minutes, with deionized water, is washed till pH=7;
B, 3. solution joined in the washed wet-milling of upper step, after stirring, water-bath boiling 40 minutes, then naturally cools to room temperature, removes after solution supernatant, with acetone, washes after three times, natural drying, finally obtains CoFe 2o 4product 4.8g;
C, take 3g CoFe 2o 4, the nitric acid 0.42ml that measures 15mol/L is made into 38ml salpeter solution and joins the CoFe weighing up 2o 4in, rock it is uniformly dispersed, obtain magnetic liquid, sealing and standing slaking 17 days;
D, in 120ml deionized water, add the magnetic liquid of slaking to stir it is fully disperseed, add 2ml aniline monomer, add again and be dissolved with 8% watery hydrochloric acid 60ml of 14g ammonium persulfate and 10% PEG400 aqueous solution 10ml stirring reaction 7 hours, purify the to obtain CoFe of polyaniline parcel of product removal of impurities 2o 4/ polyaniline composite particles.
E, get 1 gram of CoFe 2o 4/ polyaniline composite particles, adds 2ml absolute ethyl alcohol and 11ml deionized water, and vibration shakes up slaking, obtains polyaniline-coated nano Co Fe 2o 4particle magnetic liquid.
The polyaniline-coated nano Co Fe that each embodiment makes 2o 4particle magnetic liquid performance is as shown in the table:
? The size magnitude of conducting polymer integument Nano magnetic particle stability after parcel
Embodiment 1 17 nanometers Place and do not sink for six months
Embodiment 2 15 nanometers Place and do not sink for six months
Embodiment 3 12 nanometers Place and do not sink for six months
Embodiment 4 24 nanometers Place sinking in five months
Embodiment 5 29 nanometers Place sinking in four months
As can be seen from the above data, the embodiment 1-3 in processing range of the present invention makes polyaniline-coated nano Co Fe 2o 4particle magnetic liquid performance is obviously better than the embodiment 4,5 outside processing range of the present invention, especially with the best results of embodiment 2, and the polyaniline-coated nano Co Fe that has adopted as seen the present invention to prepare 2o 4particle magnetic liquid performance has good size magnitude and stability, has important using value.

Claims (3)

1. a polyaniline-coated nano Co Fe 2o 4the preparation method of particle magnetic liquid, is characterized by: by surface in situ synthetic method by CoFe 2o 4particle polyaniline-coated, reaches polyaniline and firmly wraps up CoFe 2o 4the effect of nano particle, specifically adopts coprecipitation first to prepare CoFe 2o 4nano particle, prepares CoFe with obtained nano particle subsequently 2o 4ionic ferrofluid, then at CoFe 2o 4in ionic ferrofluid, add aniline monomer and initator in-situ polymerization to obtain the good clad nano CoFe of polyaniline 2o 4magnetic particle, finally uses CoFe 2o 4/ polyaniline composite particles is prepared polyaniline-coated nano Co Fe 2o 4magnetic particle magnetic liquid.
2. a polyaniline-coated nano Co Fe 2o 4the preparation method of particle magnetic liquid, is characterized by: concrete steps are as follows:
A, get Co (NO 3) 26H 2o adds water to after 10ml dissolving, adds 4.17ml12mol/L hydrochloric acid wiring solution-forming 1., gets NaOH and adds water to 500ml wiring solution-forming 2., gets Fe (NO 3) 39H 23. O adds water to 500ml wiring solution-forming, gets FeCl 36H 2after O adds water to 40ml and dissolves, join 1., after stirring, by 2. also adding wherein of preparing, water-bath boiling 3-7 minute, then magnetic is separated to the cooling 75-85 minute of nature, with deionized water, is washed till pH=7;
B, 3. solution joined in the washed wet-milling of upper step, after stirring, water-bath boiling 25-35 minute, then naturally cools to room temperature, removes after solution supernatant, with acetone, washes after three times, natural drying, finally obtains CoFe 2o 4product;
C, salpeter solution is joined to CoFe 2o 4in, rock it is uniformly dispersed, obtain magnetic liquid, sealing and standing slaking 14-16 days;
D, in 90-110ml deionized water, add the magnetic liquid of slaking to stir it is fully disperseed, add aniline monomer, add again 8% watery hydrochloric acid and the 10% PEG400 aqueous solution stirring reaction 5.5-6.5 hour that are dissolved with ammonium persulfate, purify the to obtain CoFe of polyaniline parcel of product removal of impurities 2o 4/ polyaniline composite particles;
E, get CoFe 2o 4/ polyaniline composite particles, adds 0-1ml absolute ethyl alcohol and 7-10ml deionized water, and vibration shakes up slaking, obtains polyaniline-coated nano Co Fe 2o 4particle magnetic liquid;
The mol ratio of above-mentioned each material is as follows: Co (NO 3) 26H 2o:Fe (NO 3) 39H 2o:FeCl 36H 2o: NaOH: nitric acid: aniline monomer: ammonium persulfate: PEG400=1:5:2:18.5:3:0.75:3:0.25.
3. a polyaniline-coated nano Co Fe 2o 4the preparation method of particle magnetic liquid, is characterized by:
Concrete steps are as follows:
A, get 5.88g Co (NO 3) 26H 2o adds water to after 10ml dissolving, adds 4.17ml12mol/L hydrochloric acid wiring solution-forming 1., gets 14.6gNaOH and adds water to 500ml wiring solution-forming 2., gets 41gFe (NO 3) 39H 23. O adds water to 500ml wiring solution-forming, gets 10.92g FeCl 36H 2after O adds water to 40ml and dissolves, join 1., after stirring, by 2. also adding wherein of preparing, water-bath boiling 3-7 minute, then magnetic is separated to the cooling 75-85 minute of nature, with deionized water, is washed till pH=7;
B, 3. solution joined in the washed wet-milling of upper step, after stirring, water-bath boiling 25-35 minute, then naturally cools to room temperature, removes after solution supernatant, with acetone, washes after three times, natural drying, finally obtains CoFe 2o 4product 4.8g;
C, take 3g CoFe 2o 4, the nitric acid 0.42ml that measures 15mol/L is made into 38ml salpeter solution and joins the CoFe weighing up 2o 4in, rock it is uniformly dispersed, obtain magnetic liquid, sealing and standing slaking 14-16 days;
D, in 90-110ml deionized water, add the magnetic liquid of slaking to stir it is fully disperseed, add 2ml aniline monomer, add again the 8% watery hydrochloric acid 60ml and the 10% PEG400 aqueous solution 10ml stirring reaction 5.5-6.5 hour that are dissolved with 14g ammonium persulfate, purify the to obtain CoFe of polyaniline parcel of product removal of impurities 2o 4/ polyaniline composite particles;
E, get 1 gram of CoFe 2o 4/ polyaniline composite particles, adds 0-1ml absolute ethyl alcohol and 7-10ml deionized water, and vibration shakes up slaking, obtains polyaniline-coated nano Co Fe 2o 4particle magnetic liquid.
CN201310636008.2A 2013-12-03 2013-12-03 A kind of polyaniline-coated nano Co Fe 2o 4the preparation method of particle magnetic liquid Expired - Fee Related CN103632796B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104934186A (en) * 2015-07-14 2015-09-23 南昌航空大学 Binary ferromagnetic mixed ionic type magnetic liquid preparation method
CN105023693A (en) * 2015-07-28 2015-11-04 南昌航空大学 Preparation method of polyaniline-coated nano-composite magnetic liquid
CN106745297A (en) * 2016-11-17 2017-05-31 西北工业大学 A kind of monodisperse porous magnetic microsphere and preparation method with photonic crystal response

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Publication number Priority date Publication date Assignee Title
CN1413945A (en) * 2002-09-29 2003-04-30 西南师范大学 Preparation method of water-base acid Co ferrite CoFe2O4 magnetic solution
US20090022974A1 (en) * 2006-01-27 2009-01-22 Nanodynamics, Inc. Treated articles and methods of treating articles
CN103012786A (en) * 2012-11-12 2013-04-03 南昌航空大学 Preparation method of graphene/CoFe2O4/polyaniline composite absorbing material
CN103159953A (en) * 2013-04-02 2013-06-19 东华大学 Method for preparing conductive polymer based electromagnetic composite material

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Publication number Priority date Publication date Assignee Title
CN1413945A (en) * 2002-09-29 2003-04-30 西南师范大学 Preparation method of water-base acid Co ferrite CoFe2O4 magnetic solution
US20090022974A1 (en) * 2006-01-27 2009-01-22 Nanodynamics, Inc. Treated articles and methods of treating articles
CN103012786A (en) * 2012-11-12 2013-04-03 南昌航空大学 Preparation method of graphene/CoFe2O4/polyaniline composite absorbing material
CN103159953A (en) * 2013-04-02 2013-06-19 东华大学 Method for preparing conductive polymer based electromagnetic composite material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104934186A (en) * 2015-07-14 2015-09-23 南昌航空大学 Binary ferromagnetic mixed ionic type magnetic liquid preparation method
CN105023693A (en) * 2015-07-28 2015-11-04 南昌航空大学 Preparation method of polyaniline-coated nano-composite magnetic liquid
CN106745297A (en) * 2016-11-17 2017-05-31 西北工业大学 A kind of monodisperse porous magnetic microsphere and preparation method with photonic crystal response

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