CN107399738A - A kind of method that magnetic field modulation Kinkendal Effect prepares hollow/mesoporous nanostructured materials - Google Patents
A kind of method that magnetic field modulation Kinkendal Effect prepares hollow/mesoporous nanostructured materials Download PDFInfo
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- CN107399738A CN107399738A CN201710684802.2A CN201710684802A CN107399738A CN 107399738 A CN107399738 A CN 107399738A CN 201710684802 A CN201710684802 A CN 201710684802A CN 107399738 A CN107399738 A CN 107399738A
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- magnetic field
- nanostructured materials
- hollow
- mesoporous nanostructured
- kinkendal effect
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/02—Silicon
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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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
Abstract
The invention discloses a kind of method that magnetic field modulation Kinkendal Effect prepares hollow/mesoporous nanostructured materials, during hollow/mesoporous nanostructured materials are prepared using Kinkendal Effect, hydro-thermal reaction step therein is carried out under additional magnetic field condition.The present invention is substantially reduced using Kinkendal Effect from solid nanostructures material to the transformation time of hollow/mesoporous nanostructured materials at a lower temperature using externally-applied magnetic field; there is huge Benefit Value for reducing reaction preparation cost, meet the current saving energy and the development topic of environmental protection.
Description
Technical field
The present invention relates to field of nanometer technology, more particularly to a kind of magnetic field modulation Kinkendal Effect prepare it is hollow/mesoporous
The method of nano structural material.
Background technology
Ke Kendaer（Kirkendall）Effect is a kind of classical method for synthesizing hollow/meso-porous nano structure,
It is widely used in the synthesis of various hollow nano/Mesoporous Spheres.The various hollow nano structures synthesized by this method are widely used,
It is widely applied in neighborhoods such as nanocatalyst, nano-reactor, drug delivery, electrode material, optical materials.Current system
Standby this method generally requires high temperature again, reacts for a long time.This undoubtedly improves business and prepares cost.And magnetic field is as a species
The thermodynamic parameter of temperature, pressure etc. is similar to, substantial amounts of physics and chemical process are all had a major impact.And magnetic field is to material
Effect be by a kind of contactless mode, it is simple to operate.In addition with the fast development of society, shortage of resources and ring
Border problem becomes increasingly conspicuous, and by shortening the reaction time, reduces reaction cost, increasingly becomes industrial active demand.
Generally, hollow/meso-porous nano structure function material is accordingly synthesized using Ke Kendaer to be required in high temperature,
React for a long time.Ke Kendaer（Kirkendall）Effect relates generally to the diffusion couple with different diffusion coefficients, is mutually expanding
In scattered process, internal core layer material is more than the speed that outside Shell Materials inwardly spread to the speed of external diffusion, is expanding
Internal in scattered process to gradually form hole, last hole polymerize to form a big internal cavities.The present invention is to be based on nanometer
Structural material passes through Ke Kendaer（Kirkendall）During effect is converted into hollow/mesoporous nanostructured materials, pass through
The auxiliary of externally-applied magnetic field, promote above-mentioned conversion process.
The content of the invention
The defects of the object of the invention is exactly to make up prior art, there is provided prepared by a kind of magnetic field modulation Kinkendal Effect
The method of hollow/mesoporous nanostructured materials.
The present invention is achieved by the following technical solutions：
A kind of method that magnetic field modulation Kinkendal Effect prepares hollow/mesoporous nanostructured materials, it is characterised in that utilizing
During Kinkendal Effect prepares hollow/mesoporous nanostructured materials, reactions steps therein are in additional magnetic field condition
Lower progress.
The method that described magnetic field modulation Kinkendal Effect prepares hollow/mesoporous nanostructured materials, including following tool
Body step：
（1）Nano structural material is pre-processed to form precursors or nano structural material directly is dispersed in into liquid phase reactor
In thing, formation can form hollow or mesoporous nanostructured materials reaction systems using Kinkendal Effect；
（2）Hollow or mesoporous nanostructured materials reaction systems can be formed by what is obtained outside using Kinkendal Effect
Add and synthetic reaction is carried out in magnetic field, obtain hollow/mesoporous nanostructured materials.
The nano structural material is metal or inorganic non-metallic nano structural material.
The size of the nano structural material is 50-500nm.
Described externally-applied magnetic field is steady magnetic field or alternating magnetic field.
The intensity of the steady magnetic field is no more than 10T.
The nano structural material is nano silicon particles, and the liquid phase reactor thing is deionized water.
The preprocess method is that air atmosphere lower part aoxidizes at 800-1000 DEG C by nano silicon particles.
Described synthetic reaction condition is 180-200 DEG C, 5-10h.
It is an advantage of the invention that：
During hollow/mesoporous nanostructured materials are prepared using Kinkendal Effect, externally-applied magnetic field can promote nucleocapsid
The mutual diffusion process of material, so as to accelerate the formation of inner void.
The present invention is to utilize externally-applied magnetic field at a lower temperature, substantially reduces and is received using Kinkendal Effect from solid
Transformation time of the rice structural material to hollow/mesoporous nanostructured materials.This has huge effect for reducing reaction preparation cost
Benefit value.Meet the current saving energy and the development topic of environmental protection.
Brief description of the drawings
Fig. 1 is the schematic diagram for preparing hollow nano/mesoporous nanostructured materials using Kinkendal Effect under magnetic field.1
Represented respectively within the same reaction time with 2, during no magnetic field, obtained nano structural material structure microscopic appearance is shown in 1, has
During magnetic field, the obtained microcosmic appearance of nano structural material is shown in 2.
Fig. 2 is the equipment figure for preparing hollow nano/mesoporous nanostructured materials using Kinkendal Effect under magnetic field.
Wherein 1 represents superconducting magnet cold head, and 2 represent 10 T superconducting magnet, and 3 represent stainless steel autoclave, and 4 represent the water cooling of heating furnace
Layer, 5 represent the temperature control of heating furnace, and 6 represent whole heating furnace.
Fig. 3 is the transmission electron microscope of sample（TEM）Picture.
Embodiment
Embodiment
First by nano silicon particles in tube furnace in 800 DEG C, air atmosphere lower part oxidation, in the table of nano silicon particles
Face forms one layer of thin oxide layer, obtains predecessor of the nano silicon particles after partial oxidation as hydro-thermal reaction, then passes through
Supersound process is dispersed in deionized water by the nano silicon particles after the partial oxidation, adds and is served as a contrast with polytetrafluoroethylene (PTFE)
In the stainless steel autoclave at bottom, seal, then stainless steel autoclave is put into heater, finally equipped with stainless after packaged
The heater of steel autoclave is put into steady magnetic field under the conditions of 1T in 180 DEG C of hydro-thermal reaction 5h, and another preparation identical presoma is molten
Liquid reacts 5h and 24h respectively under without magnetic field, carries out TEM tests to obtained sample, as a result as shown in Figure 3.
Fig. 3 is transmission electron microscope (TEM) picture of sample.Left side figure and middle graph are the conditions in no magnetic field
Under in 180 DEG C respectively react 5h, 24h after sample topography.Right side figure be in steady magnetic field under the conditions of 1T 180
DEG C reaction 5h after sample topography.It can be seen that final result is all that of obtaining hollow shell structure, and in same temperature
Under degree, the mesopore size that reaction 5h is obtained in 1T steady magnetic fields is both greater than the nano structural material for being not added with magnetic field reaction 5h
Mesopore size.By Fig. 3 contrast, the Ke Kendaer that magnetic field accelerates mesoporous nanostructured materials is demonstrated from the real space
Effect.
By the way that the test result of above-described embodiment is analyzed, it is known that the presence in magnetic field is to meso-porous nano material
There is acceleration effect in Kinkendal Effect, help to shorten at a lower temperature using Kinkendal Effect from solid nano junction
Transformation time of the structure material to hollow/mesoporous nanostructured materials.
Claims (9)
1. a kind of method that magnetic field modulation Kinkendal Effect prepares hollow/mesoporous nanostructured materials, it is characterised in that in profit
During preparing hollow/mesoporous nanostructured materials with Kinkendal Effect, synthetic reaction step therein is in additional magnetic
Carried out under field condition.
2. a kind of magnetic field modulation Kinkendal Effect according to claim 1 prepares hollow/mesoporous nanostructured materials
Method, it is characterised in that including step in detail below：
（1）Nano structural material is pre-processed to form precursors or nano structural material directly is dispersed in into liquid phase reactor
In thing, formation can form hollow or mesoporous nanostructured materials reaction systems using Kinkendal Effect；
（2）Hollow or mesoporous nanostructured materials reaction systems can be formed by what is obtained outside using Kinkendal Effect
Add and synthetic reaction is carried out in magnetic field, obtain hollow/mesoporous nanostructured materials.
3. a kind of magnetic field modulation Kinkendal Effect according to claim 2 prepares hollow/mesoporous nanostructured materials
Method, it is characterised in that the nano structural material is metal or inorganic nonmetallic nanometer material.
4. a kind of magnetic field modulation Kinkendal Effect according to claim 2 prepares hollow/mesoporous nanostructured materials
Method, it is characterised in that the size of the nano structural material is 50-500nm.
5. a kind of magnetic field modulation Kinkendal Effect according to claim 2 prepares hollow/mesoporous nanostructured materials
Method, it is characterised in that described externally-applied magnetic field is steady magnetic field or alternating magnetic field.
6. a kind of magnetic field modulation Kinkendal Effect according to claim 5 prepares hollow/mesoporous nanostructured materials
Method, it is characterised in that the intensity of the steady magnetic field is not more than 10T.
7. a kind of magnetic field modulation Kinkendal Effect according to claim 2-6 prepares hollow/mesoporous nanostructured materials
Method, it is characterised in that the nano structural material is nano silicon particles, and the liquid phase reactor thing is deionized water.
8. a kind of magnetic field modulation Kinkendal Effect according to claim 7 prepares hollow/mesoporous nanostructured materials
Method, it is characterised in that the preprocess method is that air atmosphere lower part aoxidizes at 800-1000 DEG C by nano silicon particles.
9. a kind of magnetic field modulation Kinkendal Effect according to claim 7 prepares hollow/mesoporous nanostructured materials
Method, it is characterised in that described synthetic reaction condition is 180-200 DEG C, 5-10h.
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| CN201710684802.2A CN107399738B (en) | 2017-08-11 | 2017-08-11 | Method for preparing hollow/mesoporous nano-structure material by magnetic field modulation Cokendall effect |
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| CN201710684802.2A CN107399738B (en) | 2017-08-11 | 2017-08-11 | Method for preparing hollow/mesoporous nano-structure material by magnetic field modulation Cokendall effect |
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| CN107399738A true CN107399738A (en) | 2017-11-28 |
| CN107399738B CN107399738B (en) | 2020-04-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620737A (en) * | 2022-01-19 | 2022-06-14 | 中国科学院深圳先进技术研究院 | Hollow silicon dioxide and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105839146A (en) * | 2016-04-01 | 2016-08-10 | 宁夏邦鼎材料与环保科技有限公司 | Silicon-germanium solid solution and preparation method and application thereof |
| KR20160136550A (en) * | 2015-05-20 | 2016-11-30 | 고려대학교 산학협력단 | Method of manufacturing a nano metal oxide particle having a hollow structure |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160136550A (en) * | 2015-05-20 | 2016-11-30 | 고려대학교 산학협력단 | Method of manufacturing a nano metal oxide particle having a hollow structure |
| CN105839146A (en) * | 2016-04-01 | 2016-08-10 | 宁夏邦鼎材料与环保科技有限公司 | Silicon-germanium solid solution and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
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| 李东刚: "异质金属体系扩散行为和界面反应的强磁场控制研究", 《中国博士学位论文全文数据库工程科技I辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620737A (en) * | 2022-01-19 | 2022-06-14 | 中国科学院深圳先进技术研究院 | Hollow silicon dioxide and preparation method and application thereof |
| CN114620737B (en) * | 2022-01-19 | 2023-09-15 | 深圳先进电子材料国际创新研究院 | Hollow silicon dioxide and preparation method and application thereof |
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