CN108526482A - A kind of magnetic alloy hollow microsphere and preparation method thereof - Google Patents
A kind of magnetic alloy hollow microsphere and preparation method thereof Download PDFInfo
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- CN108526482A CN108526482A CN201810338114.5A CN201810338114A CN108526482A CN 108526482 A CN108526482 A CN 108526482A CN 201810338114 A CN201810338114 A CN 201810338114A CN 108526482 A CN108526482 A CN 108526482A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
- B22F1/0549—Hollow particles, including tubes and shells
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/065—Spherical particles
- B22F1/0655—Hollow particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/07—Metallic powder characterised by particles having a nanoscale microstructure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
Abstract
The present invention is a kind of magnetic alloy hollow microsphere and preparation method thereof.The group of the microballoon is divided into cobalt and nickel, structural formula CoxNi1‑x, wherein：0.14≤x≤1；With hollow structure, a diameter of 0.32~3.35 μm, wall thickness is 4~370nm；Its saturation magnetization is 80.4~152.89emug–1.The microballoon is made of mixed solvent High temperature solution phase reduction method：First organic solvent, water and surfactant are added in three-necked flask according to a certain ratio, stirred 10 minutes；Add metal salt electric stirring 2 hours, 1 hour of reducing agent electric stirring be added dropwise, then in 34 hours of 170 197 DEG C of condensing refluxes, it is cooling after with the multiple magnetic separation separating, washing of ethyl alcohol, most afterwards through being dried to obtain required magnetic alloy hollow microsphere.Raw material of the present invention is cheap and easy to get, at low cost, simple for process, efficient, easy to spread；Magnetic ball chain has size and forms the characteristics such as adjustable, can be in the application in magnetorheological, Magneto separate, catalysis, electrode material, microwave absorption or high density magnetic recording material.
Description
Technical field
The present invention relates to field of nanometer technology, and in particular to a kind of simple and easy method preparing magnetic alloy hollow microsphere.
Background technology
Magnetic metal nanometer material in nuclear-magnetism due to unique electricity, optics, magnetics and excellent chemical property, being total to
Shake imaging, optical nano device, targeted drug, magnetic storage, catalyst etc. has it to be widely applied.Wherein, hollow magnetic
Micro-nano material is concerned due to possessing low-density, high-specific surface area, low thermal coefficient of expansion and refractive index the features such as.In preparation
The method of empty microballoon includes mainly traditional hard template method, sacrifices template synthesis method, soft template the preparation method and template-free method.Mesh
Before, the preparation of magnetic metal/alloy hollow microsphere of only a small amount of document and patent report.Chinese patent literature
(CN201510083390.8) it discloses a kind of hard template method and prepares nickel-base amorphous tiny balloon alloy catalyst.Chinese patent
Document (CN105206373A) discloses one kind in tiny balloon surface-assembled magnetic metal nano array structure, obtains with more
The preparation method of the magnetic composite microsphere of level structure.Chinese patent literature (CN102319903A) discloses a kind of tiny balloon
Preparation method, this method are divided into AxB (1-x) (0.4≤x using group<1) microspheroidal alloy powder is raw material, first by pre-
Oxidation processes form one layer of oxide mems thin film, evaporate component A therein to calcining, component B is deposited on ball wall surface, forms packet
Compound hollow microballoon containing metal and metal oxide.Further metallic hollow microsphere can be obtained after reduction or dissolving.Chinese patent
Document (CN101294055) discloses a kind of being coated on tiny balloon using the preparation method of chemical plating process by the coat of metal
Surface.Chinese patent literature (CN101941076A) discloses a kind of multilayer hollow metal microspheres for electromagnetic wave absorbent material
Preparation method, this method use from facilitate reduction reaction acquisition the hollow Ni balls of internal layer；Single-layer or multi-layer Co, Fe metal or
Co1-xFex alloy firms are coated in the hollow ball surfaces of Ni by chemical plating, and thickness is adjustable.The above method is using hard template, height
Temperature calcining or chemical plating process, thus there are complicated multistep, high temperature energy consumption is big, has that special requirement, period be long, condition to equipment
The shortcomings of harsh.Therefore developing an easy pot template-free method becomes the new direction of researcher research.
In order to overcome the problems, such as that the above method exists, in the present invention, we use a step mixed solvent high-temperature liquid-phase also
Former method prepares magnetic alloy hollow microsphere, and the formation of magnetic alloy hollow microsphere is attributed to corrasion and the Oswald that moral of water
Cure mechanism.Liquid reduction reaction process temperature, the reaction time, surfactant, the amount of water, cobalt and nickel metal salt rate of charge etc. can
Regulate and control the size and composition of particle.The magnetic alloy hollow microsphere of the present invention has a good dispersion, size and forms adjustable etc. special
Property, these materials magnetorheological, Magneto separate, catalysis, electrode material, high density magnetic recording material, microwave absorption, drug delivery and
The fields such as biological medicine imaging have broad application prospects.
Invention content
The technical problem to be solved by the present invention is to：A kind of size is provided and forms controllable magnetic alloy hollow microsphere
Simple and easy method, the magnetic alloy hollow microsphere obtained by this method have stronger magnetic responsiveness and excellent Microwave Absorption Properties.
The synthetic method preparation process is simple and practicable, temperature is low, energy consumption is small, raw material is cheap and easy to get, preparation flow is novel, formation mechenism is only
Spy is not necessarily to template, is at low cost, reproducible, easy to spread.
The present invention solves its technical problem and uses technical solution below：
Magnetic alloy hollow microsphere provided by the invention, active principle are Co and Ni, structural formula CoxNi1-x,
In：0.14≤x≤1；With hollow structure, a diameter of 0.32~3.35 μm, wall thickness is 4~370nm；Its saturation magnetization
For 80.4~152.89emug-1。
The preparation method of magnetism ball chain provided by the invention, uses mixed solvent High temperature solution phase reduction method to prepare, specifically
It is：First organic solvent, water and surfactant are added in three-necked flask according to a certain ratio, stirred 10 minutes；Add gold
Belong to salt electric stirring 2 hours, reducing agent, 1 hour of electric stirring, then in 170-197 DEG C of condensing reflux 3-4 is then added dropwise
Hour, it is cooling after with the multiple magnetic separation separating, washing of ethyl alcohol, most afterwards through being dried to obtain required magnetic alloy hollow microsphere.
In the above method, a concentration of 0.045~0.18 mole every liter of metal salt, the mass fraction of surfactant is 6
~12 gram per liters, the ratio between the volume of reducing agent and the amount of metal salt total material be 0.556~2.778 milliliter every mM, go from
The volume ratio of sub- water and organic solvent is 3.5:99~6.5:96.
The reducing agent uses anhydrous hydrazine hydrate or volume fraction for the hydrazine hydrate of 50%-85%.
The metal salt is using one kind in the villaumite and acetate of cobalt and nickel.
The organic solvent is ethylene glycol or glycerine.
The ratio between described amount of substance of cobalt salt and nickel salt is 1：(0~4).
The surfactant is polyvinylpyrrolidone (PVP).
In the above method, magnetic hollow microsphere is cured mechanism and is formed using induced by magnetic field and your moral of Oswald, is had hollow
Structure, a diameter of 0.32~3.35 μm, wall thickness is 4~370nm.
Magnetic hollow microsphere provided by the invention, saturation magnetization are 80.4~152.89emug-1, and size
It is controllable with composition.
Above-mentioned magnetic hollow microsphere provided by the invention is inhaled in magnetorheological, Magneto separate, catalysis, electrode material, microwave
Application in receipts or high density magnetic recording material.
The present invention due to the adoption of the above technical solution, is allowed to compared with prior art, have the following advantages that and accumulate
Pole effect：
(1) preparation process is simple and practicable, one-step synthesis, temperature is low, the time is short, energy consumption is small, reproducible；
(2) preparation flow is novel, formation mechenism is unique, is not necessarily to template；
(3) size of magnetic hollow microsphere and composition is controllable, good dispersion；
(4) raw material is cheap and easy to get, manufacturing cost is low, it is efficient, be easy to commercial Application popularization.
Description of the drawings
Fig. 1, Fig. 3, Fig. 8, Figure 10, Figure 12, Figure 14~19, Figure 21~26 respectively embodiment 1, embodiment 2, embodiment 3,
Embodiment 4, embodiment 5~10, the pattern that products therefrom is observed under scanning electron microscope in embodiment 11~16.
Fig. 2 is that Examples 1 to 4 products therefrom observes that Elemental Composition is analysed under scanning electron microscope.
Fig. 1, Figure 20 are respectively Examples 1 to 4, the XRD phase structure figures of the products therefrom of 10~11 products therefrom of embodiment.
Fig. 5~6 are respectively the electromagnetic parameter of Examples 1 to 4 products therefrom.
Fig. 4 is the electrostatic theory of Examples 1 to 4 products therefrom.
Fig. 7, Fig. 9, Figure 11, Figure 13 are respectively the Microwave Absorption Properties of Examples 1 to 4 products therefrom.
Specific implementation mode
Using the corrasion and Oswald of water, your moral curing mechanism is formed magnetic alloy hollow microsphere of the present invention.Pass through tune
Save feeding intake for mixed solvent high temperature solution phase reduction method reaction temperature, reaction time, surfactant, the amount of water, cobalt and nickel metal salt
Than etc. controllable particle size and composition.This method raw material is cheap and easy to get, at low cost, simple for process, and the requirement to equipment is not
Height, it is efficient, it is easy to spread.
For a better understanding of the present invention, with reference to the embodiment and attached drawing content that the present invention is furture elucidated, but this
The content of invention is not limited solely to the following examples.
Magnetic alloy hollow microsphere provided by the invention, group are divided into Co and Ni, structural formula CoxNi1-x, wherein：
0.14≤x≤1；With hollow structure, a diameter of 0.32~3.35 μm, wall thickness is 4~370nm；Its saturation magnetization is
80.4~152.89emug-1。
Above-mentioned magnetic alloy hollow microsphere provided by the invention has hollow or porous structure and size and composition
The characteristics such as adjustable can be made of following embodiment method.
Embodiment 1：
First by 1.2g (12g/L) surfactant [polyvinylpyrrolidone (PVP)] be dissolved in the pure ethylene glycol of 98mL and
It is stirred evenly in the mixed solution of 4.5mL deionized waters, adds 0.6424g (0.027M) CoCl2·6H2O and 0.4279g
(0.018M)NiCl2·6H2O electric power stirs 2h, and anhydrous hydrazine hydrate 2.5mL stirrings 1h is then added dropwise into solution.It then will mixing
Object is heated to 197 DEG C of boilings and four hours of condensing reflux, clear to solution with the multiple magnetic separation separating, washing of absolute ethyl alcohol after cooling
Clearly, most afterwards through being dried to obtain required magnetic alloy hollow microsphere.
The pattern that the object phase of products therefrom, element are formed and its observed under scanning electron microscope is as shown in Figures 1 to 3, particle
A diameter of 0.72~1.68 μm, wall thickness is 28~73nm；Energy spectrum analysis is as shown in Fig. 2, Co/Ni atomic ratios are 1.96；Static magnetization
It can be such as Fig. 4, saturation magnetization 110.03emug-1.Its electromagnetic parameter is as shown in Fig. 5~6, in 2~18GHz frequency ranges
Interior real part of permittivity and imaginary part increase separately 2.22~2.38 and 2.13~5.52 times relative to hollow Co balls, and magnetic conductivity is real
Portion and imaginary part are relative to increasing separately 0.79~0.94 and 0.22~0.75 times.Its two-dimentional reflectivity of paraffin as shown in fig. 7, make
Substrate, in 4.32GHz when mass fraction is 42%, reflectivity is -42.34dB when thickness of sample is 4.9mm.
Embodiment 2：
It is identical as 1 step of embodiment, but 1.0706g (0.045M) CoCl is only added into solution2·6H2O, products therefrom
For the pattern observed under scanning electron microscope as shown in figure 8, particle diameter is 0.84~1.85 μm, wall thickness is 4~17nm.Static magnetization
It can be such as Fig. 5, saturation magnetization 152.89emug-1；Its two-dimentional reflectivity with paraffin as shown in figure 9, do substrate, quality point
In 2GHz when number is 50%, reflectivity is -18.08dB when thickness of sample is 7.9mm.
Embodiment 3：
It is identical as 1 step of embodiment, but 0.5353g (0.0225M) CoCl is added simultaneously into solution2·6H2O and
0.5348g(0.0225M)NiCl2·6H2O.The pattern that products therefrom observes under scanning electron microscope is as shown in Figure 10, and particle is straight
Diameter is 0.76~1.82 μm, and wall thickness is 47~78nm.Energy spectrum analysis is as shown in Fig. 2, Co/Ni atomic ratios are 1.69.Electrostatic theory
Such as Fig. 5, saturation magnetization 105.93emug-1；Its electromagnetic parameter is as shown in Fig. 5~6, in 2~18GHz frequency ranges
Real part of permittivity and imaginary part increase separately 0.75~1.39 and 0.21~0.79 times relative to hollow Co balls, magnetic conductivity real part
With imaginary part relative to increasing separately 0.98~1.02 and 0.11~0.96 times.Its two-dimentional reflectivity is as shown in figure 11, is made of paraffin
Substrate, in 5.44GHz when mass fraction is 50%, reflectivity is -51.5dB when thickness of sample is 3.9mm.
Embodiment 4：
It is identical as 1 step of embodiment, but 0.2141g (0.009M) CoCl is added simultaneously into solution2·6H2O and
0.8557g(0.036M)NiCl2·6H2O.The pattern that products therefrom observes under scanning electron microscope is as shown in figure 12, particle diameter
It it is 1.08~1.98 μm, wall thickness is 84~137nm.Energy spectrum analysis is as shown in Fig. 2, Co/Ni atomic ratios are 0.16.Electrostatic theory is such as
Fig. 5, saturation magnetization 80.4emug-1.Its electromagnetic parameter is as shown in Fig. 5~6, the dielectric in 2~18GHz frequency ranges
Constant real and imaginary parts increase separately 1.32~1.58 and 1.11~2.35 times relative to hollow Co balls, magnetic conductivity real part and void
Portion is relative to increasing separately 0.97~0.98 and 0.52~1.21 times.Its two-dimentional reflectivity is as shown in figure 13, and substrate is done with paraffin,
In 2GHz when mass fraction is 50%, reflectivity is -13.92dB when thickness of sample is 6.8mm.
Embodiment 5:
It is identical as 1 step of embodiment, but 1.2848g (0.054M) CoCl is added simultaneously into solution2·6H2O and
0.8557g(0.036M)NiCl2·6H2O, anhydrous hydrazine hydrate 5mL.The pattern that products therefrom observes under scanning electron microscope is as schemed
Shown in 14, particle diameter is 0.91~1.95 μm, and wall thickness is 34~57nm.
Embodiment 6：
It is identical as 1 step of embodiment, but 2.5696g (0.108M) CoCl is added simultaneously into solution2·6H2O and
1.7114g(0.072M)NiCl2·6H2O, anhydrous hydrazine hydrate 10mL.The pattern that products therefrom observes under scanning electron microscope is as schemed
Shown in 15, particle diameter is 1.88~3.35 μm, and wall thickness is 30~50nm.
Embodiment 7：
It is identical as 1 step of embodiment, but PVP 0.6g (6g/L) are added.The shape that products therefrom observes under scanning electron microscope
Looks are as shown in figure 16, and particle diameter is 1.19~1.66 μm, and wall thickness is 60~110nm.
Embodiment 8：
It is identical as 1 step of embodiment, but the condensing reflux reaction time is 3h.What products therefrom observed under scanning electron microscope
Pattern is as shown in figure 17, and particle diameter is 1.03~2.03 μm, and wall thickness is 60~170nm.
Embodiment 9：
It is identical as 1 step of embodiment, but addition 98mL glycerine and 4.5mL deionized waters make solvent, and products therefrom is being swept
It is as shown in figure 18 to retouch the pattern observed under Electronic Speculum, particle diameter is 0.86~1.65 μm, and wall thickness is 56~162nm.
Embodiment 10：
It is identical as 1 step of embodiment, but condensing reflux reaction temperature is 170 DEG C.Products therefrom is observed under scanning electron microscope
For the pattern and Elemental Composition arrived not as shown in Figure 19,20, particle diameter is 0.32~0.68 μm, and wall thickness is 41~106nm.
Embodiment 11：
It is identical as 1 step of embodiment, but condensing reflux reaction temperature is 180 DEG C.Products therefrom is observed under scanning electron microscope
The pattern arrived is as shown in figure 21, and particle diameter is 0.94~2 μm, and wall thickness is 210~370nm.
Embodiment 12：
It is identical as 1 step of embodiment, 0.6725g (0.027M) C is added simultaneously into solution4H6CoO4·4H2O and
0.4279g(0.018M)C4H6NiO4·4H2O.The pattern that products therefrom observes under scanning electron microscope is as shown in figure 22, particle
A diameter of 0.96~1.66 μm, wall thickness is 48~91nm.
Embodiment 13：
By 1.2g (12g/L) surfactant be polyvinylpyrrolidone PVP be dissolved in 98mL ethylene glycol and 4.5mL go from
It is stirred evenly in the solution of sub- water, 0.6424g (0.027M) CoCl then is added simultaneously into solution2·6H2O and 0.4279g
(0.018M)NiCl2·6H2Then anhydrous hydrazine hydrate 5mL is added dropwise into solution and stirs a hour by O electric stirring 2h, then will
Mixture is heated to 197 DEG C of boilings and 4 hours of condensing reflux, clear to solution with the multiple magnetic separation separating, washing of ethyl alcohol after cooling
Clearly, most afterwards through being dried to obtain required magnetic alloy hollow microsphere.The pattern that products therefrom observes under scanning electron microscope is as schemed
Shown in 23, particle diameter is 1.22~2.18 μm, and wall thickness is 110~180nm
Embodiment 14：
By 1.2g (12g/L) surfactant be polyvinylpyrrolidone PVP be dissolved in 98mL ethylene glycol and 4.5mL go from
It is stirred evenly in the solution of sub- water, 0.6424g (0.027M) CoCl then is added simultaneously into solution2·6H2O and 0.4279g
(0.018M)NiCl2·6H2Then anhydrous hydrazine hydrate 12.5mL is added dropwise into solution and stirs a hour by O electric stirring 2h, with
After heat the mixture to 197 DEG C of boilings and 4 hours of condensing reflux, it is cooling after with the multiple magnetic separation separating, washing of ethyl alcohol to solution
Clarification, most afterwards through being dried to obtain required magnetic alloy hollow microsphere.The pattern that products therefrom observes under scanning electron microscope is such as
Shown in Figure 24, particle diameter is 1.14~2.32 μm.
Embodiment 15：
It is identical as 1 step of embodiment, but solvent group becomes 99mL ethylene glycol and 3.5mL deionized waters.Products therefrom is being swept
It retouches the pattern observed under Electronic Speculum and Elemental Composition is not as shown in figure 25, particle diameter is 0.86~1.87 μm, wall thickness 72
~148nm.
Embodiment 16：
It is identical as 1 step of embodiment, but solvent group becomes 96mL ethylene glycol and 6.5mL deionized waters.Products therefrom is being swept
It retouches the pattern observed under Electronic Speculum and Elemental Composition is not as shown in figure 26, particle diameter is 0.81~1.25 μm, wall thickness 34
~56nm.
Claims (10)
1. a kind of magnetic alloy hollow microsphere, it is characterised in that the active principle of the microballoon is Co and Ni, and structural formula is
CoxNi1-x, wherein：0.14≤x≤1；With hollow structure, a diameter of 0.32~3.35 μm, wall thickness is 4~370nm；It is full
It is 80.4~152.89emug with the intensity of magnetization-1。
2. a kind of preparation method of magnetic alloy hollow microsphere, it is characterised in that use mixed solvent High temperature solution phase reduction method, tool
Body is：Metal salt, surfactant, reducing agent, organic solvent, water are pressed into certain stoichiometric ratio dispensing.It first will be organic molten
Agent, water and surfactant are added in three-necked flask according to a certain ratio, stir 10 minutes；Add metal salt electric stirring 2
Hour, 1 hour of reducing agent electric stirring is then added dropwise, then in 3-4 hour of 170-197 DEG C of condensing reflux, is used after cooling
The multiple magnetic separation separating, washing of ethyl alcohol, most afterwards through being dried to obtain required magnetic alloy hollow microsphere.
3. the preparation method of magnetic alloy hollow microsphere as claimed in claim 2, it is characterised in that the dosage of each raw material：Metal
The mass fraction of a concentration of 0.045~0.18 mole every liter of salt, surfactant is 6~12 gram per liters, the volume of reducing agent
It it is 0.556~2.778 milliliter every mM with the ratio between the amount of metal salt total material, the volume ratio of deionized water and organic solvent is
3.5:99~6.5:96.
4. the preparation method of magnetic alloy hollow microsphere as claimed in claim 3, it is characterised in that reducing agent uses anhydrous water
Hydrazine or volume fraction are closed as the hydrazine hydrate of 50%-85%.
5. the preparation method of magnetic alloy hollow microsphere as claimed in claim 3, it is characterised in that metal salt uses cobalt and nickel
Villaumite, one kind in acetate.
6. the preparation method of magnetic alloy hollow microsphere as claimed in claim 3, it is characterised in that organic solvent is ethylene glycol
Or glycerine.
7. the preparation method of magnetic alloy hollow microsphere as claimed in claim 3, it is characterised in that the substance of cobalt salt and nickel salt
The ratio between amount be 1:(0~4).
8. the preparation method of magnetic alloy hollow microsphere as claimed in claim 3, it is characterised in that the surfactant
For polyvinylpyrrolidone.
9. the preparation method of the magnetic alloy hollow microsphere as described in claim requires 3, it is characterised in that the hollow conjunction
Using corrasion and the Oswald of water, your moral curing mechanism is formed gold microsphere, with hollow structure, a diameter of 0.32~
3.35μm；Wall thickness is 4~370nm.
10. the magnetic alloy hollow microsphere that in claim 2 to 9 prepared by any the method, it is characterised in that the magnetic alloy
Hollow microsphere answering in magnetorheological, Magneto separate, catalysis, electrode material, drug delivery, biological medicine imaging or microwave absorption
With.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261984A (en) * | 2018-11-23 | 2019-01-25 | 陕西科技大学 | A kind of preparation method of Ni nano-hollow ball |
| CN111014649A (en) * | 2019-10-31 | 2020-04-17 | 浙江师范大学 | Magnetic hollow micro-nano material and preparation method and application thereof |
| CN112296350A (en) * | 2020-09-27 | 2021-02-02 | 浙江师范大学 | Magnetic hollow microsphere and preparation method and application thereof |
| CN112341992A (en) * | 2020-11-16 | 2021-02-09 | 浙江师范大学 | Composite wave-absorbing material and preparation method and application thereof |
| CN114210993A (en) * | 2021-12-18 | 2022-03-22 | 兰州大学 | Method for preparing hollow gold nanospheres by rapid sintering |
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| CN112341992B (en) * | 2020-11-16 | 2023-03-21 | 浙江师范大学 | Composite wave-absorbing material and preparation method and application thereof |
| CN114210993A (en) * | 2021-12-18 | 2022-03-22 | 兰州大学 | Method for preparing hollow gold nanospheres by rapid sintering |
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