CN106315684A - Preparation method of size-controllable spherical MnZn ferrite magnetic nanoparticles - Google Patents
Preparation method of size-controllable spherical MnZn ferrite magnetic nanoparticles Download PDFInfo
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Abstract
The invention discloses a preparation method of size-controllable spherical MnZn ferrite magnetic nanoparticles. The preparation method comprises the following steps: (1) respectively dissolving salts containing Fe<3+>, Mn<2+> and Zn<2+> into a solvent system taking ethylene glycol as a main ingredient, so as to form orange-yellow uniform mixed liquor; (2) adding a surface modifying agent and sodium acetate into the mixed liquor obtained in the step (1), carrying out magnetic stirring, then carrying out ultrasonic treatment, heating a reaction kettle at the temperature of 160-200 DEG C, and reacting for more than or equal to 12-20 hours; and (3) after the reaction kettle is cooled, cleaning products, and then drying in a vacuum drying oven, so that a black magnetic product is obtained. The preparation method disclosed by the invention has the advantages that a hydrothermal process is adopted, and the average particle size of the nanoparticles is controlled in a range of 30-350nm by adopting different solvent systems taking ethylene glycol as the main ingredient and different types and usage amounts of surface modifying agents; and the magnetic nanoparticles are regular in morphology and uniform in size distribution and have excellent magnetic property.
Description
Technical field
The invention belongs to field of nanometer technology, relate to the controlled spherical MnZn ferrite magnetic nano granule of a kind of size
Preparation method.
Background technology
In recent years, magnetic nanoparticle in terms of biomedical applications such as MRI, tumor thermotherapy, target drug-carrying, biological pass
Sense, the aspect research such as bio-separation is in widespread attention.This is primarily due to magnetic nanoparticle and has the thing of uniqueness and excellence
Reason, chemical property, as little in particle diameter, specific surface area is big, coupling capacity is high, has magnetic responsiveness and superparamagnetism, can be constant
Assemble under magnetic field and position, electromagnetic wave absorption heat production under alternating magnetic field.In all kinds of magnetic nanoparticles, Fe3O4It is to be so far
The only magnetic nanoparticle of Chinese scholars most study.Controlled, the Fe of good biocompatibility to preparation high dispersive, size3O4Magnetic
Property nano-particle has carried out substantial amounts of research.But due to Fe3O4In there is Fe2+It is in metastable state, it is easy to lose an electricity again
Son becomes Fe3+Reach most stable of oxidation state, thus cause the reduction of magnetic-particle magnetic property.In order to improve the anti-of magnetic-particle
Oxidation susceptibility, in recent years, a few studies person is substituted by Mn, Zn, Co, Ni etc., preliminary study MnFe2O4、MnxZn1-xFe2O4、
CoFe2O4Deng ferrite magnetic nano granule, there is higher saturation magnetization and more preferable temperature rise effect.
MnZn ferrite magnetic nano granule is the soft magnetic ferrite of a kind of widely used spinel structure, has
The advantageous properties such as saturation magnetization height, easy magnetization, low-coercivity, good biological activity, thus urge at biomedical, light
The fields such as change, aerospace flight technology have broad application prospects.Thus prepare the MnZn ferrimagnetism of different size and pattern
Nano-particle is current research emphasis to meet the application demand of different field.It addition, dimensional homogeneity can be to nano-particle
Performance such as magnetic, biocompatibility produce strong influence, therefore be also magnetic nanoparticle application in need consider a weight
Want factor.
Existing MnZn ferrite magnetic nano preparation method of granules is complex, and the MnZn ferrite magnetic prepared
The size heterogeneity of property nano-particle.Simple method how is used to prepare size MnZn ferrimagnetism controlled, uniform
Nano-particle remains the emphasis of everybody research.
Summary of the invention
It is an object of the present invention to provide the preparation method of the controlled spherical MnZn ferrite magnetic nano granule of a kind of size, solve
Certainly existing method prepares the controlled MnZn ferrite magnetic nano particle size heterogeneity of size, complicated the asking of operating process
Topic.
The technical scheme is that the preparation method of the controlled spherical MnZn ferrite magnetic nano granule of size, bag
Include following steps:
(1) preparation of precursor liquid is reacted
Fe will be contained respectively3+、Mn2+、Zn2+Salt be dissolved in the dicyandiamide solution based on ethylene glycol, under room temperature, magnetic force stirs
Mix, form orange-yellow uniform mixed liquor；
(2) generation of spherical MnZn ferrite magnetic nano granule
Coating material, sodium acetate are added in the mixed liquor that step (1) obtains, magnetic agitation, then carry out ultrasonic place
Reason, proceeds to after supersound process seal in reactor, is heated at 160-200 DEG C by reactor, react more than 12-20h；
(3) post processing of product
After the cooling of question response still, wash products, then dry in vacuum drying oven, obtain black magnetic product；
The described dicyandiamide solution based on ethylene glycol is for ethylene glycol and tetraethylene-glycol, ethylene glycol and a contracting diethyl two
One in alcohol, ethylene glycol and water.
Described coating material is in Polyethylene Glycol (PEG), polyvinylpyrrolidone (PVP), polymine (PEI)
A kind of mixing of the mixing of or Polyethylene Glycol and polyvinylpyrrolidone or Polyethylene Glycol and polymine.
Further, Fe3+、Mn2+、Zn2+, the mol ratio of sodium acetate be 0.5:0.5:2:8.
Further, in step (2), Polyethylene Glycol, polyvinylpyrrolidone, the relative molecular mass of polymine divide
It is not 6000,10000,10000, Mn2+It is respectively with the mol ratio of Polyethylene Glycol, polyvinylpyrrolidone, polymine
7.5-75、12.5-125、12.5-125。
Further, the volume ratio of ethylene glycol and tetraethylene-glycol is 1:1-3:1, ethylene glycol and diglycol
Volume ratio be: the volume ratio 1:1-3:1 of 1:1-3:1, ethylene glycol and water.
Further, in step (3), the method for wash products is: use ethanol and deionized water to clean 4-5 time.
Further, in step (3), the temperature of drying is 70 DEG C.
Further, in step (1), Fe3+、Mn2+、Zn2+Salt be respectively FeCl3.6H2O、MnCl2.4H2O、ZnCl2。
Further, when dicyandiamide solution is ethylene glycol and water, Mn2+When being 7.5 with the mol ratio of PEG, prepared nanometer
Mean particle size is 30nm；When dicyandiamide solution is ethylene glycol and tetraethylene-glycol, Mn2+When being 7.5 with the mol ratio of PEG,
Prepared nano-particle mean diameter is 120nm；When dicyandiamide solution is ethylene glycol and diglycol, Mn2+With rubbing of PEI
That is than when being 12.5, and prepared nano-particle mean diameter is 230nm；When dicyandiamide solution is ethylene glycol and a contracting diethyl two
Alcohol, Mn2+When being respectively 15,25 with the mol ratio of PEG and PEI, prepared nano-particle mean diameter is 240nm；Work as solvent
System is ethylene glycol and diglycol, Mn2+When being 12.5 with the mol ratio of PVP, prepared nano-particle mean diameter
For 280nm；When dicyandiamide solution is ethylene glycol and diglycol, Mn2+When being respectively 15,25 with the mol ratio of PEG and PVP,
Prepared nano-particle mean diameter is 330nm；When dicyandiamide solution is ethylene glycol and diglycol, Mn2+With rubbing of PEG
That is than when being 7.5, and prepared nano-particle mean diameter is 350nm.By using the different solvents based on ethylene glycol
System and variety classes, the coating material of consumption, mean diameter regulates and controls in the range of 30-350nm.
The present invention compared with prior art has the advantage that
The hydro-thermal method using the different solvents system based on ethylene glycol of present invention offer prepares MnZn magnetic Nano
Grain, it is possible to achieve to nano particle diameter in the regulation and control of 30-350nm scope.Prepared MnZn magnetic nanoparticle is spherical in shape,
Its pattern is uniform, and uniform particle diameter has good magnetic property；In ethylene glycol and tetraethylene-glycol system or ethylene glycol and a contracting
In diethylene glycol system, the nano-particle of synthesis has intensity of magnetization height, the advantages such as coercivity, Ms/Mr are low.The advantage of this method
Being that preparation process is simple, preparation condition is gentle；Preparation process is controlled, reproducible；Can control by controlling dicyandiamide solution
The particle diameter of nano-particle, magnetic property.The method has bright prospects in fields such as industry and biologic applications.
Accompanying drawing explanation
The Fig. 1 different solvents system based on ethylene glycol, PEG is the magnetic obtained after coating material (1g) hydro-thermal reaction
The XRD figure spectrum of nano-particle.Dicyandiamide solution is respectively as follows: (a) ethylene glycol and water, (b) ethylene glycol and tetraethylene-glycol, (c) second
Glycol and diglycol；
Fig. 2 is as dicyandiamide solution with ethylene glycol and diglycol for solvent, uses variety classes, the surface of consumption to repair
The XRD figure spectrum of the magnetic nanoparticle obtained after decorations agent hydro-thermal reaction: (d) PEI-1g, (e) PVP-1g, (f) PEG/PVP-
0.5g/0.5g。
Fig. 3 be ethylene glycol be the magnetic obtained after main different solvents system (PEG is coating material: 1g) hydro-thermal reaction
The hysteresis curve figure of nano-particle.Dicyandiamide solution is respectively as follows: (a) ethylene glycol and water, (b) ethylene glycol and tetraethylene-glycol, (c)
Ethylene glycol and diglycol.
Fig. 4 is the different solvents system (PEG is coating material: 1g) based on ethylene glycol and variety classes, consumption
The magnetic nanoparticle scanning electricity obtained after coating material (ethylene glycol and diglycol are dicyandiamide solution) hydro-thermal reaction
Mirror SEM schemes.A () ethylene glycol and water, amplification is 160,000 times；B () ethylene glycol and tetraethylene-glycol, amplification is 160,000
Times；C () PEI-1g, amplification is 80,000 times；D () PVP-1g, amplification is 80,000 times；(e)PEG/PVP-0.5g/0.5g,
Amplification is 80,000 times；F () ethylene glycol and diglycol, amplification is 80,000 times.
Detailed description of the invention
Embodiment 1
Weigh 1.35g FeCl3.6H2O、0.247g MnCl2.4H2O、0.17g ZnCl2Be dissolved in 40mL ethylene glycol and
In the mixed solvent system of water, magnetic agitation 30min under room temperature, form orange-yellow uniform mixed liquor.By the Polyethylene Glycol of 1g
(PEG), 3.6g anhydrous sodium acetate join in the mixed liquor stirred, magnetic agitation about 30min, then mixed liquor is carried out
The supersound process of about 10min.Move to mixed liquor the teflon-lined reactor of 100ml seals.By reactor
Put to baking oven, react 12h at 200 DEG C.After the cooling of question response still, by ethanol and deionized water wash products 4-5 time, then exist
In vacuum drying oven 70 DEG C, dry under 8h, obtain black magnetic product.
Characterize: such as (a) and the nano-particle prepared in ethylene glycol and aqueous solvent shown in Fig. 4 (a) in Fig. 1
XRD figure spectrum and scanning electron microscope (SEM) photograph understand, and prepared MnZn ferrite nanometer particle is spinel-type, and crystallization degree is higher,
Crystal formation is good；Nano-particle prepared in this dicyandiamide solution does not occur that little nanoparticle agglomerates forms spherical nanoparticle
Phenomenon, and be all single scattered spherical nanoparticle, complete crystallization.Through nanomeasure particle diameter distribution software statistics meter
Calculating, its mean diameter is about 30nm, and the standard deviation of particle diameter is little, particle diameter narrow distribution, pattern rule.
Performance: the nano-particle of preparation in ethylene glycol and aqueous solvent as shown in (a) in Fig. 3 is under room temperature 300k
Hysteresis curve understand, this MnZn ferrite nanometer particle has soft magnetic characteristic.Remanent magnetism Mr is 19emu/g, and coercivity H is
162Oe.It addition, it is 0.32 that saturation magnetization Ms of sample reaches 59.45emu/g, Mr/Ms.
Embodiment 2
Weigh 1.35g FeCl3.6H2O、0.247g MnCl2.4H2O、0.17g ZnCl2Be dissolved in 40mL ethylene glycol and
In the mixed solvent system of tetraethylene-glycol, magnetic agitation 30min under room temperature, form orange-yellow uniform mixed liquor.By 1g
Polyethylene Glycol (PEG), 3.6g anhydrous sodium acetate join in the mixed liquor stirred, magnetic agitation about 30min, more right
Mixed liquor carries out the supersound process of about 10min.Mixed liquor is moved in the teflon-lined reactor of 100ml close
Envelope.Reactor is put to baking oven, reacts 12h at 200 DEG C.After the cooling of question response still, by ethanol and deionized water wash products
4-5 time, then in vacuum drying oven 70 DEG C, dry under 8h, obtain black magnetic product.
Characterize: such as Fig. 1 (b) and the receiving of preparation in the dicyandiamide solution of ethylene glycol and tetraethylene-glycol shown in Fig. 4 (b)
The XRD figure spectrum of rice grain and scanning electron microscope (SEM) photograph understand, and prepared MnZn ferrite nanometer particle is spinel-type, and crystallization journey
Spending higher, crystal formation is good；Minimum nanoparticle agglomerates forms the big nano-particle of uniform-spherical, and big nano-particle divides
Dissipate property preferable.Through nanomeasure particle diameter distribution software statistical computation, its mean diameter is about 120nm, and particle diameter distribution is all
One, pattern rule.
Performance: the nano-particle of preparation in ethylene glycol and tetraethylene-glycol dicyandiamide solution as shown in Fig. 3 (a) is in room
Hysteresis curve under Wen understands, and the remanent magnetism Mr of this MnZn ferrite nanometer particle is 23emu/g, and coercivity H is 111Oe, has
Soft magnetic characteristic.It addition, it is 0.329 that saturation magnetization Ms of sample reaches 70emu/g, Mr/Ms.
Embodiment 3
Weigh 1.35g FeCl3.6H2O、0.247g MnCl2.4H2O、0.17g ZnCl2Be dissolved in 40mL ethylene glycol and
In the dicyandiamide solution of diglycol, magnetic agitation 30min under room temperature, form orange-yellow uniform mixed liquor.Gathering 1g
Ethylene glycol (PEG), 3.6g anhydrous sodium acetate join in the mixed liquor stirred, magnetic agitation about 30min, then to mixing
Liquid carries out the supersound process of about 10min.Move to mixed liquor the teflon-lined reactor of 100ml seals.Will
Reactor is put to baking oven, reacts 16h at 180 DEG C.After the cooling of question response still, by ethanol and deionized water wash products 4-5 time,
Then in vacuum drying oven 70 DEG C, dry under 8h, obtain black magnetic product.
Characterize: such as (c) and the receiving of preparation in ethylene glycol and diglycol dicyandiamide solution shown in Fig. 4 (f) in Fig. 1
The XRD figure spectrum of rice grain and scanning electron microscope (SEM) photograph understand, and prepared MnZn ferrite nanometer particle is spinel-type, and crystallization journey
Spending higher, crystal formation is good；Minimum nanoparticle agglomerates forms the big nano-particle of uniform-spherical.Its mean diameter is about
350nm, particle diameter distribution is homogeneous, and the only grain diameter of only a few is 400nm, pattern rule, good dispersion.And this system is closed
The particle diameter of the little nano-particle become is than synthesis little in ethylene glycol and tetraethylene-glycol and ethylene glycol and aqueous solvent
The particle diameter of nano-particle is little.
Performance: the nano-particle of preparation in ethylene glycol and diglycol dicyandiamide solution as shown in (c) in Fig. 3 exists
Hysteresis curve under room temperature understands, and the remanent magnetism Mr of MnZn ferrite nanometer particle is 15emu/g, and coercivity H is 102Oe, has
Soft magnetic characteristic.It addition, it is 0.196 that saturation magnetization Ms of sample reaches 76.35emu/g, Mr/Ms.
Embodiment 4
Weigh 1.35g FeCl3.6H2O、0.247g MnCl2.4H2O、0.17g ZnCl2Be dissolved in 40mL ethylene glycol and
In the dicyandiamide solution of diglycol, magnetic agitation 30min under room temperature, form orange-yellow uniform mixed liquor.Gathering 1g
Aziridine (PEI), 3.6g anhydrous sodium acetate join in the mixed liquor stirred, magnetic agitation about 30min, then to mixed
Close liquid and carry out the supersound process of about 10min.Move to mixed liquor the teflon-lined reactor of 100ml seals.
Reactor is put to baking oven, reacts 12h at 200 DEG C.After the cooling of question response still, by ethanol and deionized water wash products 4-5
Secondary, then in vacuum drying oven 70 DEG C, dry under 8h, obtain black magnetic product.
Characterize: as in Fig. 2 (d) and shown in Fig. 4 (c) in ethylene glycol and diglycol dicyandiamide solution with PEI-1g
The XRD figure spectrum of the nano-particle prepared for coating material and scanning electron microscope (SEM) photograph understand, prepared MnZn ferrite nano
Grain is spinel-type, and crystallization degree is higher, and crystal formation is good；Minimum nanoparticle agglomerates forms the big nanometer of uniform-spherical
Granule.Through nanomeasure particle diameter distribution software statistical computation, its mean diameter is about 230nm, the standard deviation of particle diameter distribution
Difference is less, pattern rule, good dispersion.
Embodiment 5
Weigh 1.35g FeCl3.6H2O、0.247g MnCl2.4H2O、0.17g ZnCl2Be dissolved in 40mL ethylene glycol and
In the dicyandiamide solution of diglycol, magnetic agitation 30min under room temperature, form orange-yellow uniform mixed liquor.Gathering 1g
Vinylpyrrolidone (PVP), 3.6g anhydrous sodium acetate join in the mixed liquor stirred, magnetic agitation about 30min, then
Mixed liquor is carried out the supersound process of about 10min.Mixed liquor is moved in the teflon-lined reactor of 100ml close
Envelope.Reactor is put to baking oven, reacts 12h at 200 DEG C.After the cooling of question response still, by ethanol and deionized water wash products
4-5 time, then in vacuum drying oven 70 DEG C, dry under 8h, obtain black magnetic product.
Characterize: as in Fig. 2 (e) and shown in Fig. 4 (d) in ethylene glycol and diglycol dicyandiamide solution with PVP-1g
The XRD figure spectrum of the nano-particle prepared for coating material and scanning electron microscope (SEM) photograph understand, prepared MnZn ferrite nano
Grain is spinel-type, and crystallization degree is higher, and crystal formation is good；Minimum nanoparticle agglomerates forms the big nanometer of uniform-spherical
Granule.Through nanomeasure particle diameter distribution software statistical computation, its mean diameter is about 280nm, and particle diameter distribution is homogeneous, shape
Looks rule, good dispersion.
Embodiment 6
Weigh 1.35g FeCl3.6H2O、0.247g MnCl2.4H2O、0.17g ZnCl2Be dissolved in 40mL ethylene glycol and
In the dicyandiamide solution of diglycol, magnetic agitation 30min under room temperature, form orange-yellow uniform mixed liquor.By 0.5g's
The Polyethylene Glycol (PEG) of polymine (PEI) and 0.5g, 3.6g anhydrous sodium acetate join in the mixed liquor stirred,
Magnetic agitation about 30min, then mixed liquor is carried out the supersound process of about 10min.Mixed liquor is moved to the polytetrafluoro of 100ml
The reactor of ethylene liner seals.Reactor is put to baking oven, reacts 12h at 200 DEG C.After the cooling of question response still, use wine
Essence and deionized water wash products 4-5 time, then 70 DEG C, drying under 8h in vacuum drying oven, obtain black magnetic product.
Embodiment 7
Weigh 1.35g FeCl3.6H2O、0.247g MnCl2.4H2O、0.17g ZnCl2Be dissolved in 40mL ethylene glycol and
In the dicyandiamide solution of diglycol, magnetic agitation 30min under room temperature, form orange-yellow uniform mixed liquor.By 0.5g's
The Polyethylene Glycol (PEG) of polyvinylpyrrolidone (PVP) and 0.5g, 3.6g anhydrous sodium acetate join the mixed liquor stirred
In, magnetic agitation about 30min, then mixed liquor is carried out the supersound process of about 10min.Mixed liquor is moved to the poly-of 100ml
The reactor of tetrafluoroethene liner seals.Reactor is put to baking oven, reacts 12h at 200 DEG C.After the cooling of question response still,
By ethanol and deionized water wash products 4-5 time, then in vacuum drying oven 70 DEG C, dry under 8h, obtain black magnetic and produce
Thing.
Characterize: as in Fig. 2 (f) and shown in Fig. 4 (e) in ethylene glycol and diglycol dicyandiamide solution with PEG/
PVP-0.5g/0.5g is that the XRD figure spectrum of nano-particle prepared by coating material understands with scanning electron microscope (SEM) photograph, prepared MnZn
Ferrite nanometer particle is spinel-type, and crystallization degree is higher, and crystal formation is good；Minimum nanoparticle agglomerates forms uniform ball
The big nano-particle of shape.Through nanomeasure particle diameter distribution software statistical computation, its mean diameter is about 330nm, particle diameter
It is distributed homogeneous, pattern rule, good dispersion.
Conclusion
The bright different dicyandiamide solution based on ethylene glycol of XRD figure stave and variety classes, consumption coating material not
The crystalline phase of target product can be affected, be spinel-type magnetic iron ore phase MnZn ferrite nanometer particle (Fig. 1, Fig. 2).
Can be seen that can be main different dicyandiamide solution and not with ethylene glycol by using different from scanning electron microscope (SEM) photograph
Same kind, the coating material of consumption regulate and control the size of MnZn ferrite magnetic nano granule, and this invention successfully realizes
Mean diameter is regulated and controled at 30-350nm scope (Fig. 4).
Embodiment described above only have expressed the detailed description of the invention of the application, and it describes more concrete and detailed, but also
Therefore the restriction to the application protection domain can not be interpreted as.It should be pointed out that, for those of ordinary skill in the art
For, on the premise of conceiving without departing from technical scheme, it is also possible to make some deformation and improvement, these broadly fall into this
The protection domain of application.
Claims (8)
1. the preparation method of the spherical MnZn ferrite magnetic nano granule that size is controlled, it is characterised in that comprise the steps:
(1) preparation of reaction precursor liquid:
Fe will be contained respectively3+、Mn2+、Zn2+Salt be dissolved in the dicyandiamide solution based on ethylene glycol, magnetic agitation under room temperature, shape
Become orange-yellow uniform mixed liquor；
(2) generation of spherical MnZn ferrite magnetic nano granule:
Coating material, sodium acetate are added in the mixed liquor that step (1) obtains, magnetic agitation, then carry out supersound process, super
Proceed to after sonication reactor seals, reactor is heated at 160-200 DEG C, reacts more than 12-20h；
(3) post processing of product:
After the cooling of question response still, wash products, then dry in vacuum drying oven, obtain black magnetic product；
The described dicyandiamide solution based on ethylene glycol is for ethylene glycol and tetraethylene-glycol, ethylene glycol and diglycol, second
One in two alcohol and waters；
Described coating material is the one in Polyethylene Glycol (PEG), polyvinylpyrrolidone (PVP), polymine (PEI)
Or the mixing of the mixing of Polyethylene Glycol and polyvinylpyrrolidone or Polyethylene Glycol and polymine.
The preparation method of the spherical MnZn ferrite magnetic nano granule that size the most according to claim 1 is controlled, it is special
Levy and be, Fe3+、Mn2+、Zn2+, the mol ratio of sodium acetate be 0.5:0.5:2:8.
The preparation method of the spherical MnZn ferrite magnetic nano granule that size the most according to claim 1 is controlled, it is special
Levy and be, Polyethylene Glycol in step (2), polyvinylpyrrolidone, the relative molecular mass of polymine be respectively 6000,
10000,10000, Mn2+It is respectively 7.5-75,12.5-with Polyethylene Glycol, polyvinylpyrrolidone, the mol ratio of polymine
125、12.5-125。
The preparation method of the spherical MnZn ferrite magnetic nano granule that size the most according to claim 1 is controlled, it is special
Levying and be, the volume ratio of ethylene glycol and tetraethylene-glycol is the volume ratio of 1:1-3:1, ethylene glycol and diglycol
For: the volume ratio 1:1-3:1 of 1:1-3:1, ethylene glycol and water.
The preparation method of the spherical MnZn ferrite magnetic nano granule that size the most according to claim 1 is controlled, it is special
Levying and be, in step (3), the method for wash products is: use ethanol and deionized water to clean 4-5 time.
The preparation method of the spherical MnZn ferrite magnetic nano granule that size the most according to claim 1 is controlled, it is special
Levying and be, in step (3), the temperature of drying is 70 DEG C.
The preparation method of the spherical MnZn ferrite magnetic nano granule that size the most according to claim 1 is controlled, it is special
Levy and be, in step (1), Fe3+、Mn2+、Zn2+Salt be respectively FeCl3.6H2O、MnCl2.4H2O、ZnCl2。
The preparation method of the spherical MnZn ferrite magnetic nano granule that size the most according to claim 1 is controlled, it is special
Levy and be, when dicyandiamide solution is ethylene glycol and water, Mn2+When being 7.5 with the mol ratio of PEG, prepared nano-particle average particle
Footpath is 30nm；When dicyandiamide solution is ethylene glycol and tetraethylene-glycol, Mn2+When being 7.5 with the mol ratio of PEG, prepared receives
Rice grain mean diameter is 120nm；When dicyandiamide solution is ethylene glycol and diglycol, Mn2+It is 12.5 with the mol ratio of PEI
Time, prepared nano-particle mean diameter is 230nm；When dicyandiamide solution is ethylene glycol and diglycol, Mn2+With PEG
When being respectively 15,25 with the mol ratio of PEI, prepared nano-particle mean diameter is 240nm；When dicyandiamide solution is ethylene glycol
And diglycol, Mn2+When being 12.5 with the mol ratio of PVP, prepared nano-particle mean diameter is 280nm；When molten
Agent system is ethylene glycol and diglycol, Mn2+When being respectively 15,25 with the mol ratio of PEG and PVP, prepared nanometer
Mean particle size is 330nm；When dicyandiamide solution is ethylene glycol and diglycol, Mn2+When being 7.5 with the mol ratio of PEG,
Prepared nano-particle mean diameter is 350nm；By using the different dicyandiamide solution based on ethylene glycol and the most of the same race
Class, the coating material of consumption, mean diameter regulates and controls in the range of 30-350nm.
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| CN109331836A (en) * | 2018-10-10 | 2019-02-15 | 重庆大学 | It is a kind of to prepare β-Bi2O3/MnxZn1-xFe2O4The new method of composite magnetic catalysis material |
| CN115176816A (en) * | 2022-08-30 | 2022-10-14 | 河北科技师范学院 | Fe 3 O 4 @CuO x Composite material and preparation method and application thereof |
| CN115430443A (en) * | 2022-09-18 | 2022-12-06 | 重庆文理学院 | SrFe 12 O 19 Mxene composite catalyst and preparation method and application thereof |
| CN117838874A (en) * | 2024-03-07 | 2024-04-09 | 山东第一医科大学(山东省医学科学院) | Preparation method and application of gadolinium-platinum radiotherapy sensitizer |
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| CN115430443A (en) * | 2022-09-18 | 2022-12-06 | 重庆文理学院 | SrFe 12 O 19 Mxene composite catalyst and preparation method and application thereof |
| CN117838874A (en) * | 2024-03-07 | 2024-04-09 | 山东第一医科大学(山东省医学科学院) | Preparation method and application of gadolinium-platinum radiotherapy sensitizer |
| CN117838874B (en) * | 2024-03-07 | 2024-06-11 | 山东第一医科大学(山东省医学科学院) | Preparation method and application of gadolinium-platinum radiotherapy sensitizer |
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