CN102872775A - Method for preparing hollow material - Google Patents
Method for preparing hollow material Download PDFInfo
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- CN102872775A CN102872775A CN2012103906574A CN201210390657A CN102872775A CN 102872775 A CN102872775 A CN 102872775A CN 2012103906574 A CN2012103906574 A CN 2012103906574A CN 201210390657 A CN201210390657 A CN 201210390657A CN 102872775 A CN102872775 A CN 102872775A
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Abstract
The invention provides a method for preparing a hollow material. The method comprises the following steps of: dispersing 1 to 5g of bacterium powder in 100ml of water; adding 3 to 10mmol of one or more kinds of metal salts of Ag, Al, Fe, Ni, Zn, Mn, Sn, Co, V, W, Mo, Cu, Mg, Ca and Ti into the bacterium solution, and uniformly stirring; adding a precipitating agent, separating, and cleaning to obtain precipitates; and calcining the obtained precipitates at the temperature of between 300 and 800 DEG C for 1 to 7 hours, and thus obtaining the hollow material. The method is low in template price and environment-friendly, and the problems of high price, difficulty in acquisition and environmental pollution of the conventional template are solved. The preparation method is simple in process, contributes to large-scale production and is extremely high in practical value.
Description
Technical field:
The invention belongs to technical field of nano material, relate to a kind of preparation method of hollow material, relate in particular to a kind of method for preparing hollow material with the bacterium template.
Background technology:
Because hollow material has the advantage of low-density and high-specific surface area, in field extensive application such as medicine carrying, sensing, catalysis, optics, lithium ion battery, ultracapacitors.Template is the method commonly used of preparation hollow ball shell material, and template commonly used has soft template (micella, emulsion droplet, micro-capsule etc.) and hard template, and (metal colloid particles is such as Ag, Au etc.; Inorganic compound particles such as SiO2 ball, carbon ball etc.).Detailed process is: at first coat the thin layer of one deck target material on the surface of template, form the nucleocapsid structure material, and then remove template by chemolysis and high temperature sintering, obtain hollow spherical shell material (Wei Meiying, Chinese powder technology, 2008,14,45.).Yet no matter be stone template or soft nuclear template, all exist serious shortcoming: soft nuclear template is very responsive to solution environmental, need to strictly control synthetic condition; Hard template needs that then it is carried out finishing just can make nuclear-shell connect closely, and the removal complicated condition of template, controls badly also to pollute the environment.These shortcomings of conventional template are restricting seriously that it is synthetic in the laboratory, the particularly application of industry in synthetic.
In the technology of existing preparation hollow material, provide a kind of preparation method of hollow Ni-Zn ferrite among patent 102408231 A, the method adopts the carbon ball as template, adopts hydrothermal condition reaction 8 hours.The required carbon ball template of the method needs special synthetic, and the removal process of carbon ball template needs high-temperature calcination usually, and it is higher to consume energy.Patent 101306832 A provide a kind of preparation method of hollow multilevel copper oxide nano, the method is take fatty alcohol-water termination system as reaction medium, the bubble that produces take reactant hydrolysis adopts Microwave Radiation in Manufacturing to prepare the hollow nano cupric oxide as template.This synthetic method is had relatively high expectations to the precursor solution environmental, need to strictly control synthesis condition.Patent 101314182 A provide a kind of method for preparing hollow metal nanometer particle take aluminium oxide particles as template.The required aluminium oxide of the method is received particle need to be synthetic in advance, and need to modify it, and the removal process need of aluminium oxide is used the hazardous agents hydrofluoric acid of high concentration.Therefore, not only cost is higher for the method synthetic, and pollutes the environment.The present invention adopts bacterium to overcome the deficiency of above synthetic method as the template of synthetic hollow material: bacterial origin is extensive, low price; The removal process of bacterium is simple, does not need to use toxic reagent; The bacterium template can be used for synthetic multiple hollow material, and the method has blanket advantage.
Summary of the invention:
The object of the present invention is to provide a kind of preparation method of hollow material.The present invention adopts bacterium as the template of preparation hollow material, and preparation process is simple, is convenient to large-scale production.The bacterium template has environmental friendliness, be easy to obtain, cheap advantage, can solve that conventional template is expensive, the problem of contaminated environment.
The invention provides a kind of preparation method of hollow material, may further comprise the steps:
1) gets 1 ~ 5g Bacteria powder, be scattered in 100ml water.
2) in bacterium liquid, add one or more of 3 ~ 10mmol Ag, Al, Fe, Ni, Zn, Mn, Sn, Co, V, W, Mo, Cu, Mg, Ca, Ti slaine, stir.
3) add alkaline precipitating agent, the gained precipitation is separated, cleaned in regulator solution pH to 9 ~ 13.
4) 300 ~ 800 ℃ of hollow material that arrive of calcining 1 ~ 7h.
The present invention has following gain effect:
Bacterium template environmental friendliness, cheap and easy to get.
Preparation process is simple.
Manufacturing cycle is short.
Production cost is low.
Description of drawings
Fig. 1 is for amplifying the scanning electron microscope diagram of 3000 times hollow ZnO.
Fig. 2 is for amplifying the scanning electron microscope diagram of 4500 times hollow SnO2.
The specific embodiment
Below by by example the present invention being described in further detail, but following instance only is illustrative, and protection scope of the present invention is not subjected to the restriction of these embodiment.
Below in conjunction with specific embodiment technical scheme of the present invention is further described:
Embodiment 1
Get 1 g saccharomycete bacterium powder, be scattered in 100 ml water.In bacterium liquid, add the 3mmol zinc acetate, stir.Add NaOH, regulator solution pH to 9.Separate, clean the gained precipitation.500 ℃ of hollow material that arrive of calcining 3h.Fig. 1 is for amplifying the scanning electron microscope diagram of 3000 times hollow ZnO ball.Can see obviously that damaged ball presents hollow form.
Embodiment 2
Get 5g saccharomycete bacterium powder, be scattered in 100ml water.In bacterium liquid, add the 3mmol zinc acetate, stir.Add NaOH, regulator solution pH to 9.Separate, clean the gained precipitation.500 ℃ of hollow material that arrive of calcining 3h.This scheme is used the bacterium template of higher weight, and other are not all changed.Resulting hollow ball ball wall is thin than the sample among the embodiment 1.
Embodiment 3
Get 1g saccharomycete bacterium powder, be scattered in 100ml water.In bacterium liquid, add the 5mmol zinc acetate, stir.Add NaOH, regulator solution pH to 9.Separate, clean the gained precipitation.500 ℃ of hollow material that arrive of calcining 3h.This scheme is used the bacterium template of higher weight, and other are not all changed.Resulting hollow ball ball wall is thick than the sample among the embodiment 1.
Embodiment 4
Get 1g saccharomycete bacterium powder, be scattered in 100ml water.In bacterium liquid, add the 3mmol zinc acetate, stir.Add NaOH, regulator solution pH to 9.Separate, clean the gained precipitation.700 ℃ of hollow material that arrive of calcining 3h.This scheme is used higher calcining heat, and other are not all changed.Resulting material forms the particle of hollow ball ball wall and wants large than embodiment 1.
Embodiment 5
Get 1g saccharomycete bacterium powder, be scattered in 100ml water.In bacterium liquid, add the 3mmol zinc acetate, stir.Add 3mmol vulcanized sodium.Separate, clean the gained precipitation.The lower 500 ℃ of hollow material that arrive of calcining 3h of protection gas.This scheme uses vulcanized sodium as precipitating reagent, and calcining is carried out under protection gas, and other are not all changed.Resulting material is the hollow zinc sulfide ball.
Embodiment 6
Get 1g Escherichia coli bacterium powder, be scattered in 100ml water.In bacterium liquid, add the 3mmol stannous sulfate, stir.Add NaOH, regulator solution pH to 12.Separate, clean the gained precipitation.500 ℃ of hollow material that arrive of calcining 3h.This scheme uses Escherichia coli to do template, and precursor uses stannous sulfate, and pH is adjusted into 12.Fig. 2 is for amplifying the scanning electron microscope diagram of 4500 times SnO2.Resulting hollow tin ash is rod shaped structure.
The present invention not only is confined to the above-mentioned specific embodiment; persons skilled in the art are according to content disclosed by the invention; can adopt other multiple specific embodiment to implement the present invention; therefore; every employing project organization of the present invention and thinking; do some simple designs that change or change, all fall into the scope of protection of the invention.
Claims (3)
1. the preparation method of a hollow material comprises the steps:
1) gets 1 ~ 5g Bacteria powder, be scattered in 100ml water.
2) in bacterium liquid, add one or more of 3 ~ 10mmol Ag, Al, Fe, Ni, Zn, Mn, Sn, Co, V, W, Mo, Cu, Mg, Ca, Ti slaine, stir.
3) add alkaline precipitating agent, the gained precipitation is separated, cleaned in regulator solution pH to 9 ~ 13.
4) 300 ~ 800 ℃ of hollow material that arrive of calcining 1 ~ 7h.
2. the preparation method of a kind of hollow material as claimed in claim 1 is characterized in that, adopts bacterium as template, and the pH of bacterium and metal salt solution is 9 ~ 13.
3. the preparation method of a kind of hollow material as claimed in claim 1 is characterized in that, calcining heat is 300 ~ 800 ℃, and calcination time is 1 ~ 7h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103906574A CN102872775A (en) | 2012-10-16 | 2012-10-16 | Method for preparing hollow material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103906574A CN102872775A (en) | 2012-10-16 | 2012-10-16 | Method for preparing hollow material |
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| CN102872775A true CN102872775A (en) | 2013-01-16 |
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| CN2012103906574A Pending CN102872775A (en) | 2012-10-16 | 2012-10-16 | Method for preparing hollow material |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101012067A (en) * | 2007-02-01 | 2007-08-08 | 郑州大学 | Method for preparing stannic oxide hollow sphere |
| CN101372357A (en) * | 2008-09-27 | 2009-02-25 | 燕山大学 | Method for controlling micrometre zinc sulphide morphology by Escherichia coli biological template |
| CN101905330A (en) * | 2010-08-20 | 2010-12-08 | 上海交通大学 | Hollow silver microballoon and preparation thereof as well as application method thereof in Raman detection |
| WO2011149996A2 (en) * | 2010-05-24 | 2011-12-01 | Siluria Technologies, Inc. | Nanowire catalysts |
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2012
- 2012-10-16 CN CN2012103906574A patent/CN102872775A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101012067A (en) * | 2007-02-01 | 2007-08-08 | 郑州大学 | Method for preparing stannic oxide hollow sphere |
| CN101372357A (en) * | 2008-09-27 | 2009-02-25 | 燕山大学 | Method for controlling micrometre zinc sulphide morphology by Escherichia coli biological template |
| WO2011149996A2 (en) * | 2010-05-24 | 2011-12-01 | Siluria Technologies, Inc. | Nanowire catalysts |
| CN101905330A (en) * | 2010-08-20 | 2010-12-08 | 上海交通大学 | Hollow silver microballoon and preparation thereof as well as application method thereof in Raman detection |
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Application publication date: 20130116 |