CN101172664A - Ultrasound wave auxiliary hydrothermal synthesis technique for magnetic magnetic iron oxide nano ultra-tiny grain - Google Patents
Ultrasound wave auxiliary hydrothermal synthesis technique for magnetic magnetic iron oxide nano ultra-tiny grain Download PDFInfo
- Publication number
- CN101172664A CN101172664A CN 200610016424 CN200610016424A CN101172664A CN 101172664 A CN101172664 A CN 101172664A CN 200610016424 CN200610016424 CN 200610016424 CN 200610016424 A CN200610016424 A CN 200610016424A CN 101172664 A CN101172664 A CN 101172664A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- oxide nano
- fecl
- distilled water
- ultra
- 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 discloses an ultrasonic assistant hydro-thermal synthesis process for magnetic Fe3O4 nanometer super fine grain. The invention solves the problems of impure products and large grain diameter. The invention has the technical proposal that the form of Fe3O4 crystal nucleus is promoted in the cavitation effect of ultrasonic; cavitation gas bubble is produced in mediums; the pH value of strong ammonia is adjusted to 11 to 13; and the nanometer grain diameter size and the magnetic characteristics are controlled by controlling the hydro-thermal synthesis temperature within range from 140 DEG C to 160 DEG C and within time of 3 to 5 hours, and by changing the micro environment of the air bubble chamber, so as to obtain the dry product which is black magnetic Fe3O4 nanometer powder after being milled. The invention comprises no organic solvent, belonging to full green environmental protection which is a break in the field, and the invention is also the first to use the ultrasonic technology for assistant hydro-thermal synthesis. The invention has the advantages of simple technology, low cost, small powder granularity and even grain diameter. The powder not only can be used as duplicate ink powder, but also can be board used in aspects such as medical, biological technology, magnetic immunocyte separation, DNA separation, nucleic acid hybridization, and preparation for magnetic butt directional medicine carrying micron ball.
Description
Technical field
The present invention relates to a kind ofly prepare the technology of magnetic material nano particulate with ultramicrotechnique, particularly a kind of preparation technology of inferior straight iron oxide compound super-fine magnetic powder nano material belongs to B82B3/00; B82B1/00; The H01F1/10C01G49/08 technical field.
Technical background
The nano magnetic material Z 250 is a kind of important inverse spinel type ferrite, works as magnetic Fe
3O
4Mean particle dia produces superparamagnetism during less than certain critical size.This material is very easily magnetization under external magnetic field, and still, when external magnetic field was cancelled, very easily demagnetization did not have hysteresis, and coercive force is zero, makes that nanoparticle can be by permanent magnetization in magnetic field.Because its special magnetics and electrology characteristic make it in fields such as magnetic fluid, magnetic recording, magnetic refrigeration, catalyzer, medicine, pigment wide application prospect be arranged.Aspect magnetic recording material, magnetic nanoparticle can replace traditional micron order magnetic, is used for the preparation of high density magnetic recording material; In biotechnology, magnetic nanoparticle all is widely used at aspects such as magnetic immuno cellular segregation, immobilized enzyme, immunodiagnosis, DAN separation, nucleic acid hybridizations, can also utilize the magnetic responsiveness of nano-magnetic Z 250, ferromagnetic particle and medicine wrapped into jointly make the magnetic drug-carrying microballoon in the polymer substance, after said preparation enters human body, outside under the guiding of magnetic, but magnetic drug-carrying microballoon target site of pathological change, and can the long period be detained the location, can bring into play the systemic side effects of the local maximum effect and the minimizing medicine of medicine.Therefore, the nano-magnetic Z 250 has the better application prospect at field of medicaments.
At present, the method that is used to prepare the nano-magnetic Z 250 is a lot, and common has, as the precipitator method: carry out under nitrogen protection, with Fe
2+And Fe
3+The molysite mixed solution of (mol ratio is 1: 2) is added in the alkali lye, and reaction precipitation becomes Fe
3O
4Oxidation reduction process for another example: be under liquid phase state, the Fe in the divalent iron salt solution under alkaline condition, is used KNO
3Partial oxidation and generate Fe
3O
4The shortcoming of these two kinds of method maximums is to be difficult to control fully Fe
2+Oxidation or Fe
2+Oxidized process and ratio generate dephasign easily, make product impure.Also have is raw material with iron carbonyl and ferrocene exactly, adopt dry method such as high-temperature calcination, flame decomposition, LASER HEAT decomposition synthetic, these class methods are because the temperature of using is too high, and it is inevitable making grain growing excessive, therefore, cause the formation of lattice imperfection and the introducing of impurity.
In addition, the irradiation chemical technology prepares nano ferriferrous oxide becomes a kind of novel method, in its technological process, is the source of iron particle with the iron trichloride, is precipitation agent with ammoniacal liquor, is the free scavenging agent of oxidisability in the aqueous solution with Virahol (UPA); And by hydrophilic surface active agent polyvinyl alcohol (PVA), control the speed of growth of nucleus, in order to the control particle size, and the electron beam that utilizes rumbatron to produce carries out radiation treatment, with the solution behind the irradiation through wash, centrifugation, oven dry can obtain the nano ferriferrous oxide powder of black at last, particle diameter is still bigger, and its scope is 76.94～126.77nm.There are two defectives in the novel method that this irradiation chemical technology prepares nano ferriferrous oxide, one, be because of particle diameter is big, the product that makes the preparation of this novel method, the application at the aspects such as preparation of magnetic immuno cellular segregation, DAN separation, nucleic acid hybridization and magnetic target medicine carrying microballoons is restricted; They are two years old, be owing to used the organic compound Virahol as the free scavenging agent of oxidisability in the aqueous solution, and select for use surface active agent polyvinyl alcohol (PVA) to control the speed of growth of nucleus with the control particle size, this method is in preparation process, organic compound is difficult to controlled fully, whether meet 12 principles of Green Chemistry, await further investigating checking.
Summary of the invention
The object of the present invention is to provide a kind of production technique simple, preparation cost is low, product purity is higher and grain fineness number is more even, need not any organic solvent, the ultrasonic wave auxiliary water process for thermosynthesizing of the magnetic magnetic iron oxide nano ultra-tiny grain of environmental protection technology fully.
The ultrasound wave auxiliary hydrothermal synthesis technique of magnetic magnetic iron oxide nano ultra-tiny grain of the present invention is characterized in that adding any organic solvent, utilizes the thermal synthesis of ultrasonic wave auxiliary water, promotes Fe by means of cavitation effect of ultrasonic waves
3O
4The formation of nucleus specifically may further comprise the steps:
(1). at first with N
2Gas feeds in the distilled water, gets rid of in the distilled water behind the air, again with FeCl
36H
2O and FeCl
24H
2O is dissolved in the distilled water, obtains mixing solutions under magnetic agitation;
(2). change step (1) gained mixing solutions over to the ground there-necked flask, feed N flatly
2Gas, another mouthful installation fills the dropping funnel of strong aqua, and residue is good with the grinding port plug plug flatly, put into constant temperature magnetic agitation electric mantle, under the constant temperature magnetic agitation, slowly drip strong aqua and transfer pH value of solution=11～13, place it in the numerical control supersonic vibrator, ultra-sonic oscillation make Fe again
3O
4Precursor;
(3). the Fe that step (2) is made
3O
4Precursor is transferred in the autoclave, puts it in the electric oven again, and setting temperature of reaction is 140～160 ℃, and the reaction times is 3～5h, reaction back distilled water wash, whizzer separates, and removes supernatant liquid, repeat 4～5 times, being washed till clear liquid pH value is 7, obtains product; With the product that makes loft drier dry 7h under 60 ℃, put into mortar to grind, obtain black magnetic ferriferrous oxide nano powder.
The ultrasound wave auxiliary hydrothermal synthesis technique of magnetic magnetic iron oxide nano ultra-tiny grain of the present invention is characterized in that FeCl
36H
2O and FeCl
24H
2O is dissolved in distilled water, is dissolved in distilled water by the ratio of amount of substance, and its ratio is FeCl
36H
2O: FeCl
24H
2O=1.75: 1.
The ultrasound wave auxiliary hydrothermal synthesis technique of magnetic magnetic iron oxide nano ultra-tiny grain of the present invention, it is characterized in that constant temperature magnetic agitation temperature is 60 ℃, numerical control supersonic vibrator design temperature is 60 ℃, and the ultra-sonic oscillation time is 1h, and hunting power is set to 70KHz.
The invention has the beneficial effects as follows: in the preparation of magnetic ferroferric oxide nanometer particulate, first, using ultrasonic technology.This ultrasonic wave auxiliary water thermal synthesis is used cavitation effect of ultrasonic waves and is promoted Fe
3O
4The formation of nucleus makes it can produce cavitation bubble in liquid medium, the N of remaining ammonia and feeding in the pH value process of this cavitation bubble and usefulness strong aqua regulator solution
2Gas is enclosed in the Fe of formation in the lump
3O
4Around the nucleus, in reaction ax, form bubble-chamber,, change the microenvironment of bubble-chamber in the reaction ax by control hydro-thermal synthetic temperature of reaction and reaction times, to reach the purpose of control Z 250 purity and size and magnetic property, this sintetics is the Fe of the inverse spinel structure of pure phase
3O
4The nano-magnetic ultrafine particulate, not having reunites takes place, the product purity height, grain fineness number is little more even, median size 12.4～41.4nm, preparation cost is low, has minimum magnetic saturation intensity and coercive force, and remanent magnetism is few, is good superparamagnetic material and soft magnetic material.Except doing the photocopy toner, can be more widely used at the aspects such as preparation of biotechnology, magnetic immuno cellular segregation, DAN separation, nucleic acid hybridization and magnetic target medicine carrying microballoons.In the ultrasonic wave auxiliary water thermal synthesis of magnetic ferroferric oxide nanometer particulate, need not any organic solvent, this is a breakthrough in this field, belongs to complete environmental protection technology.
Description of drawings
Fig. 1 is preparation technology's schema of the present invention.Fig. 2 A, a are the TEM photo and the magnetic hysteresis loop of the embodiment of the invention 1 prepared product; Fig. 2 B, b are the TEM photo and the magnetic hysteresis loop of the embodiment of the invention 2 prepared products; Fig. 2 C, c are the TEM photo and the magnetic hysteresis loop of the embodiment of the invention 3 prepared products; Fig. 2 D, d are the TEM photo and the magnetic hysteresis loop of the embodiment of the invention 4 prepared products; Fig. 2 E, e are the TEM photo and the magnetic hysteresis loop of the embodiment of the invention 5 prepared products; Fig. 2 F, f are the TEM photo and the magnetic hysteresis loop of the embodiment of the invention 6 prepared products.
Embodiment
Embodiment 1
According to technical process preparing product as shown in Figure 1.
The first step: with FeCl
36H
2O and FeCl
24H
2O is dissolved in the distilled water by the ratio of 1.75: 1 amount of substance, with N
2Gas feeds in the distilled water, gets rid of air in the water, obtains mixing solutions under the magnetic agitation;
Second step: the gained mixing solutions changes 250ml ground there-necked flask over to, feeds N flatly
2Gas, another mouthful installation fills the dropping funnel of strong aqua, residue is good with the grinding port plug plug flatly, in constant temperature magnetic agitation electric mantle, under 60 ℃ of magnetic agitation of constant temperature, slowly drip strong aqua and transfer pH value of solution=11, place it in numerical control supersonic vibrator (60 ℃ of design temperatures again, power setting 70KHz) in, ultra-sonic oscillation 1h makes Fe
3O
4Precursor;
The 3rd step: with the Fe that makes
3O
4Precursor is transferred in the teflon-lined autoclave, puts into DL-101-1 type electric oven, and carrying out the hydrothermal synthesis reaction temperature is 140 ℃, time 5h.Reaction back naturally cooling again with the product distilled water wash, separates with whizzer, removes supernatant liquid, repeat 4 times or 5 times all can, being washed till clear liquid pH value is about 7, the acquisition product; Loft drier dry 7h under 60 ℃ is put in the product taking-up that makes, put into mortar again to grind, obtain black magnetic ferriferrous oxide nano powder.Fig. 2 A, a are the TEM photo and the magnetic hysteresis loop of the embodiment of the invention 1 prepared product.
With X-ray diffraction analysis (XRD), can determine that prepared black powder is the Fe of the inverse spinel structure of pure phase
3O
4, choose the diffraction peak of (311) crystal face, survey its peak width at half height β, the median size of utilizing Scherrer (thank and rein in) formula to calculate product grains is 19.8nm.
Test by vibrating sample magnetometer (VSM), the specific saturation magnetization that obtains black magnetic ferriferrous oxide nano powder is 62emu/g, coercive force is 27.1Oe, and remanent magnetism is 2.7emu/g, can determine that prepared black magnetic ferriferrous oxide nano powder is superparamagnetic material preferably.
Embodiment 2
Add strong aqua and transfer pH value of solution=12; Carrying out the hydrothermal synthesis reaction temperature is 150 ℃, time 4h.All the other are with embodiment 1, obtain black magnetic ferriferrous oxide nano powder product at last, the median size of crystal grain is 20.2nm, specific saturation magnetization is 63emu/g, coercive force is 27.8Oe, remanent magnetism is 2.8emu/g, can determine that prepared black magnetic ferriferrous oxide nano powder is superparamagnetic material preferably.Its TEM photo and magnetic hysteresis loop are shown in Fig. 2 B, b.
Embodiment 3
Add strong aqua and transfer pH value of solution=13; Carrying out the hydrothermal synthesis reaction temperature is 140 ℃, time 4h.All the other are with embodiment 1, obtain black magnetic ferriferrous oxide nano powder product at last, the median size of crystal grain is 12.4nm, specific saturation magnetization is 64emu/g, coercive force is 20.4Oe, remanent magnetism is 1.8emu/g, can determine that prepared black magnetic ferriferrous oxide nano powder is superparamagnetic material preferably.Its TEM photo and magnetic hysteresis loop are shown in Fig. 2 C, c.
Embodiment 4
Add strong aqua and transfer pH value of solution=13; Carrying out the hydrothermal synthesis reaction temperature is 150 ℃, time 4h.All the other are with embodiment 1, obtain black magnetic ferriferrous oxide nano powder product at last, the median size of crystal grain is 19.6nm, specific saturation magnetization is 65emu/g, coercive force is 26.8Oe, remanent magnetism is 2.6emu/g, can determine that prepared black magnetic ferriferrous oxide nano powder is superparamagnetic material preferably.Its TEM photo and magnetic hysteresis loop are shown in Fig. 2 D, d.
Embodiment 5
Add strong aqua and transfer pH value of solution=13; Carrying out the hydrothermal synthesis reaction temperature is 160 ℃, time 3h.All the other are with embodiment 1, obtain black magnetic ferriferrous oxide nano powder product at last, the median size of crystal grain is 29.6nm, specific saturation magnetization is 62emu/g, coercive force is 57.5Oe, remanent magnetism is 5.2emu/g, can determine that prepared black magnetic ferriferrous oxide nano powder is superparamagnetic material preferably.Its TEM photo and magnetic hysteresis loop are shown in Fig. 2 E, e.
Add strong aqua and transfer pH value of solution=13; Carrying out the hydrothermal synthesis reaction temperature is 160 ℃, time 5h.All the other are with embodiment 1, obtain black magnetic ferriferrous oxide nano powder product at last, the median size of crystal grain is 41.4nm, specific saturation magnetization is 70emu/g, coercive force is 60.7Oe, remanent magnetism is 6.0emu/g, can determine that prepared black magnetic ferriferrous oxide nano powder is superparamagnetic material preferably.Its TEM photo and magnetic hysteresis loop are shown in Fig. 2 F, f.
Claims (3)
1. the ultrasound wave auxiliary hydrothermal synthesis technique of a magnetic magnetic iron oxide nano ultra-tiny grain is characterized in that adding any organic solvent, utilizes the thermal synthesis of ultrasonic wave auxiliary water, promotes Fe by means of cavitation effect of ultrasonic waves
3O
4The formation of nucleus specifically may further comprise the steps:
(1). at first with N
2Gas feeds in the distilled water, gets rid of in the distilled water behind the air, again with FeCl
36H
2O and FeCl
24H
2O is dissolved in the distilled water, obtains mixing solutions under magnetic agitation;
(2). change step (1) gained mixing solutions over to the ground there-necked flask, feed N flatly
2Gas, another mouthful installation fills the dropping funnel of strong aqua, and residue is good with the grinding port plug plug flatly, put into constant temperature magnetic agitation electric mantle, under the constant temperature magnetic agitation, slowly drip strong aqua and transfer pH value of solution=11～13, place it in the numerical control supersonic vibrator, ultra-sonic oscillation make Fe again
3O
4Precursor;
(3). the Fe that step (2) is made
3O
4Precursor is transferred in the autoclave, puts it in the electric oven again, and setting temperature of reaction is 140～160 ℃, and the reaction times is 3～5h, reaction back distilled water wash, whizzer separates, and removes supernatant liquid, repeat 4～5 times, being washed till clear liquid pH value is 7, obtains product; With the product that makes loft drier dry 7h under 60 ℃, put into mortar to grind, obtain black magnetic ferriferrous oxide nano powder.
2. the ultrasound wave auxiliary hydrothermal synthesis technique of magnetic magnetic iron oxide nano ultra-tiny grain according to claim 1 is characterized in that FeCl
36H
2O and FeCl
24H
2O is dissolved in distilled water, is dissolved in distilled water by the ratio of amount of substance, and its ratio is FeCl
36H
2O: FeCl
24H
2O=1.75: 1.
3. the ultrasound wave auxiliary hydrothermal synthesis technique of magnetic magnetic iron oxide nano ultra-tiny grain according to claim 2, it is characterized in that constant temperature magnetic agitation temperature is 60 ℃, numerical control supersonic vibrator design temperature is 60 ℃, and the ultra-sonic oscillation time is 1h, and hunting power is set to 70KHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610016424 CN101172664A (en) | 2006-11-01 | 2006-11-01 | Ultrasound wave auxiliary hydrothermal synthesis technique for magnetic magnetic iron oxide nano ultra-tiny grain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610016424 CN101172664A (en) | 2006-11-01 | 2006-11-01 | Ultrasound wave auxiliary hydrothermal synthesis technique for magnetic magnetic iron oxide nano ultra-tiny grain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101172664A true CN101172664A (en) | 2008-05-07 |
Family
ID=39421453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610016424 Pending CN101172664A (en) | 2006-11-01 | 2006-11-01 | Ultrasound wave auxiliary hydrothermal synthesis technique for magnetic magnetic iron oxide nano ultra-tiny grain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101172664A (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559984B (en) * | 2009-05-27 | 2010-09-01 | 山东大学 | Preparation method of superparamagnetic Fe3O4 nano-particles |
| CN101875508A (en) * | 2010-05-31 | 2010-11-03 | 沈阳药科大学 | Preparation method of Fe3O4 nano-magnetic powder lymphatic tracer and application thereof |
| CN102001712A (en) * | 2010-12-16 | 2011-04-06 | 苏州康立达纳米生物工程有限公司 | Method for preparing superparamagnetic Fe3O4 nano particle based on thermal decomposition of template |
| CN101445277B (en) * | 2008-11-14 | 2011-05-25 | 东北大学 | Nano-crystalline Fe3O4 particles with high absorption capacity and preparation method thereof |
| CN102464358A (en) * | 2010-11-05 | 2012-05-23 | 中国科学院生态环境研究中心 | Ultrasonic auxiliary hydrothermal synthesizing water-soluble square ferrite magnetic nano-material method |
| CN102502879A (en) * | 2011-11-02 | 2012-06-20 | 华东师范大学 | Fe3O4 nano-microsphere and preparation method thereof |
| CN102653621A (en) * | 2011-03-03 | 2012-09-05 | 宁波大学 | Composite material with high dielectric constant and preparation method for composite material |
| CN102850599A (en) * | 2012-09-18 | 2013-01-02 | 厦门大学 | Magnetic chitosan/nano Fe3O4 composite and preparation method and application thereof |
| CN104163919A (en) * | 2014-07-25 | 2014-11-26 | 北京科技大学 | Polyaniline/oxidized graphene/ferriferrous oxide absorbing material and preparation method |
| CN104511270A (en) * | 2013-10-07 | 2015-04-15 | 财团法人工业技术研究院 | Ferrite adsorption material for adsorbing rare earth elements and adsorption method thereof |
| CN105502513A (en) * | 2015-12-23 | 2016-04-20 | 淮北师范大学 | Preparation method of hollow ferroferric oxide wave-absorbing material |
| CN105502514A (en) * | 2015-12-27 | 2016-04-20 | 同济大学 | Preparation method of superparamagnetic ferroferric oxide nanometer material |
| CN106927511A (en) * | 2017-04-17 | 2017-07-07 | 吉林大学 | A kind of high-energy ball milling preparation method of magnetic ferroferric oxide nanometer powder |
| CN108130589A (en) * | 2016-12-01 | 2018-06-08 | 北京理工大学 | It is a kind of to prepare the controllable hydro-thermal method of monocrystalline |
| CN109336187A (en) * | 2018-12-12 | 2019-02-15 | 于晓峰 | A kind of preparation method of ferriferrous oxide nano-particle |
| CN110726759A (en) * | 2019-10-31 | 2020-01-24 | 大连海事大学 | Preparation method of tin dioxide quantum dots, gas sensor and preparation method of gas sensor |
| CN111261400A (en) * | 2020-03-31 | 2020-06-09 | 哈尔滨学院 | Preparation method of magnetic nano material |
| CN111757928A (en) * | 2017-12-01 | 2020-10-09 | 环球生命科技咨询美国有限责任公司 | Methods for cell enrichment and isolation |
| CN112266026A (en) * | 2020-10-30 | 2021-01-26 | 常州大学 | Method for preparing cobaltate perovskite material |
| CN115947379A (en) * | 2022-12-30 | 2023-04-11 | 江苏理工学院 | Paramagnetic micron material and preparation method thereof |
-
2006
- 2006-11-01 CN CN 200610016424 patent/CN101172664A/en active Pending
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101445277B (en) * | 2008-11-14 | 2011-05-25 | 东北大学 | Nano-crystalline Fe3O4 particles with high absorption capacity and preparation method thereof |
| CN101559984B (en) * | 2009-05-27 | 2010-09-01 | 山东大学 | Preparation method of superparamagnetic Fe3O4 nano-particles |
| CN101875508A (en) * | 2010-05-31 | 2010-11-03 | 沈阳药科大学 | Preparation method of Fe3O4 nano-magnetic powder lymphatic tracer and application thereof |
| CN101875508B (en) * | 2010-05-31 | 2013-07-31 | 沈阳药科大学 | Preparation method of Fe3O4 nano-magnetic powder lymphatic tracer and application thereof |
| CN102464358A (en) * | 2010-11-05 | 2012-05-23 | 中国科学院生态环境研究中心 | Ultrasonic auxiliary hydrothermal synthesizing water-soluble square ferrite magnetic nano-material method |
| CN102001712A (en) * | 2010-12-16 | 2011-04-06 | 苏州康立达纳米生物工程有限公司 | Method for preparing superparamagnetic Fe3O4 nano particle based on thermal decomposition of template |
| CN102653621A (en) * | 2011-03-03 | 2012-09-05 | 宁波大学 | Composite material with high dielectric constant and preparation method for composite material |
| CN102653621B (en) * | 2011-03-03 | 2014-06-04 | 宁波大学 | Composite material with high dielectric constant and preparation method for composite material |
| CN102502879A (en) * | 2011-11-02 | 2012-06-20 | 华东师范大学 | Fe3O4 nano-microsphere and preparation method thereof |
| CN102850599A (en) * | 2012-09-18 | 2013-01-02 | 厦门大学 | Magnetic chitosan/nano Fe3O4 composite and preparation method and application thereof |
| CN104511270A (en) * | 2013-10-07 | 2015-04-15 | 财团法人工业技术研究院 | Ferrite adsorption material for adsorbing rare earth elements and adsorption method thereof |
| CN104163919A (en) * | 2014-07-25 | 2014-11-26 | 北京科技大学 | Polyaniline/oxidized graphene/ferriferrous oxide absorbing material and preparation method |
| CN105502513A (en) * | 2015-12-23 | 2016-04-20 | 淮北师范大学 | Preparation method of hollow ferroferric oxide wave-absorbing material |
| CN105502514A (en) * | 2015-12-27 | 2016-04-20 | 同济大学 | Preparation method of superparamagnetic ferroferric oxide nanometer material |
| CN108130589A (en) * | 2016-12-01 | 2018-06-08 | 北京理工大学 | It is a kind of to prepare the controllable hydro-thermal method of monocrystalline |
| CN106927511A (en) * | 2017-04-17 | 2017-07-07 | 吉林大学 | A kind of high-energy ball milling preparation method of magnetic ferroferric oxide nanometer powder |
| CN111757928A (en) * | 2017-12-01 | 2020-10-09 | 环球生命科技咨询美国有限责任公司 | Methods for cell enrichment and isolation |
| CN109336187A (en) * | 2018-12-12 | 2019-02-15 | 于晓峰 | A kind of preparation method of ferriferrous oxide nano-particle |
| CN109336187B (en) * | 2018-12-12 | 2021-05-04 | 于晓峰 | Preparation method of ferroferric oxide nanoparticles |
| CN110726759A (en) * | 2019-10-31 | 2020-01-24 | 大连海事大学 | Preparation method of tin dioxide quantum dots, gas sensor and preparation method of gas sensor |
| CN111261400A (en) * | 2020-03-31 | 2020-06-09 | 哈尔滨学院 | Preparation method of magnetic nano material |
| CN112266026A (en) * | 2020-10-30 | 2021-01-26 | 常州大学 | Method for preparing cobaltate perovskite material |
| CN112266026B (en) * | 2020-10-30 | 2024-01-26 | 常州大学 | Method for preparing cobaltate perovskite material |
| CN115947379A (en) * | 2022-12-30 | 2023-04-11 | 江苏理工学院 | Paramagnetic micron material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101172664A (en) | Ultrasound wave auxiliary hydrothermal synthesis technique for magnetic magnetic iron oxide nano ultra-tiny grain | |
| Xie et al. | One-pot synthesis of monodisperse iron oxide nanoparticles for potential biomedical applications | |
| Sabale et al. | Superparamagnetic MFe 2 O 4 (M= Ni, Co, Zn, Mn) nanoparticles: Synthesis, characterization, induction heating and cell viability studies for cancer hyperthermia applications | |
| Sivakumar et al. | Nanophase formation of strontium hexaferrite fine powder by the sonochemical method using Fe (CO) 5 | |
| Wang et al. | Facile synthesis and magnetic properties of Fe3C/C nanoparticles via a sol–gel process | |
| Chen et al. | A microwave-triggered controllable drug delivery system based on hollow-mesoporous cobalt ferrite magnetic nanoparticles | |
| Xie et al. | Shape evolution of “multibranched” Mn–Zn ferrite nanostructures with high performance: a transformation of nanocrystals into nanoclusters | |
| CN101723655B (en) | Preparation method of Mn-Zn ferrite cobalt-doped nano material | |
| CN102936050B (en) | Preparation method of ferroferric oxide nano sheet | |
| Wu et al. | One-pot reaction and subsequent annealing to synthesis hollow spherical magnetite and maghemite nanocages | |
| CN105802579A (en) | Nano Fe3O4/graphene composite material with high saturation magnetization and electromagnetic shielding function as well as preparation method of composite material | |
| Kumar et al. | Synthesis and characterization of iron oxide nanoparticles (Fe2O3, Fe3O4): a brief review | |
| Thakur et al. | Cobalt nanoferrites: a review on synthesis, characterization, and applications | |
| Hoghoghifard et al. | Influence of annealing temperature on structural, magnetic, and dielectric properties of NiFe2O4 nanorods synthesized by simple hydrothermal method | |
| CN102616863A (en) | Method for compositing Fe3O4 nanorod by utilizing magnetic induction gas-liquid interface method | |
| Monisha et al. | Role of Zn dopant on superparamagnetic property of CoFe2O4 nanoparticles | |
| CN101885512B (en) | Hydrothermal synthesis process of magnetic ferroferric oxide nanometer ultrafine particles in non-N2 atomosphere | |
| CN102464358A (en) | Ultrasonic auxiliary hydrothermal synthesizing water-soluble square ferrite magnetic nano-material method | |
| Sui et al. | Enhance room-temperature ferromagnetism of α-Fe2O3 nanomaterials by easy and scalable method | |
| Ali et al. | Size and shape control synthesis of iron oxide–based nanoparticles: current status and future possibility | |
| Haneef et al. | Investigation of magnetic and dielectric properties of cobalt cubic spinel ferrite nanoparticles synthesized by CTAB-assisted co-precipitation method | |
| CN102583567B (en) | Superfine high-dispersion super-paramagnetism ferrate nano particles and preparation method thereof | |
| El-Okr et al. | Structural and magnetic analysis on spinel (NiFe2O4) prepared by sol gel process at different calcinations temperatures | |
| Ge et al. | Co 2 GeO 4 nanoplates and nano-octahedrons from low-temperature controlled synthesis and their magnetic properties | |
| CN106380896B (en) | A kind of preparation method of vortex magnetic nano-rings colloidal sol |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080507 |