CN103771543A - Foam-like cobaltous oxide nano material and preparation method thereof - Google Patents
Foam-like cobaltous oxide nano material and preparation method thereof Download PDFInfo
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- CN103771543A CN103771543A CN201410041050.4A CN201410041050A CN103771543A CN 103771543 A CN103771543 A CN 103771543A CN 201410041050 A CN201410041050 A CN 201410041050A CN 103771543 A CN103771543 A CN 103771543A
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Abstract
The invention belongs to the technical field of nano materials, and particularly relates to a foam-like cobaltous oxide nano material and a preparation method thereof. Cobaltous thiocyanate is used as a precursor to synthesize the foam-like cobaltous oxide nano material. The method has the advantages of simple technique and mild conditions, and is easy for production. The foam-like cobaltous oxide nano material can be used as an advanced functional material.
Description
Technical field
The invention belongs to technical field of nano material, be specifically related to a kind of class A foam A cobaltous oxide nano material and preparation method thereof.
Background technology
Cobaltous oxide (CoO), owing to having special structure and performance, has caused that people study widely.Cobaltous oxide is the important source material of manufacturing various function alloys and extraordinary cobalt salt, has important effect at wide spectrums such as Aeronautics and Astronautics, electrical equipment, machinofacture, chemistry and ceramic industries.As a kind of high-melting-point and the magnetic metal oxide having good stability, cobaltous oxide status in the research of magneticsubstance is important.In recent years, cobaltous oxide is also widely used in rechargeable battery and sensor field.
Cobaltous oxide nano material has better performance compared with bulk material.The preparation method of cobaltous oxide nano material is existing a lot, comprising: sol-gel method, microemulsion method, liquid-phase precipitation-thermal decomposition method and electrolytic process etc., but processing method that can suitability for industrialized production is at present also seldom.Therefore it is significant that, low cost is prepared cobaltous oxide nano material.[(1) Dong Chengyong, profound cyanines, Zhang Chuanfu, Wu Jianhui, Wimet, 2005,22(2): 117]
Recently, contriver finds that thiocyanate-system is different from general chemical system, has special character.Such as: cuprous thiocyanate can be easy to same sodium hydroxide reaction, and directly generates nano cuprous oxide wire material.Wherein, both can adopt film morphology for the cuprous thiocyanate of chemosynthesis, also can adopt powder morphology.[(2) xuwei, Xiao Xingxing, Xia Peng, a kind of nano cuprous oxide wire porous membrane and its preparation method and application, application for a patent for invention number: 2014100140030; (3) xuwei, Xiao Xingxing, Xia Peng, Sun Qian, field fruit, a kind of nano cuprous oxide wire material and simple method for preparing thereof, application for a patent for invention number: 2014100188097; (4) xuwei, Xiao Xingxing, Xia Peng, Sun Qian, field fruit, a kind of preparation method of nano cuprous oxide wire material, application for a patent for invention number: 2014100314653]
The present invention finds, take the sub-cobalt of thiocyanic acid as presoma, under alkaline solution effect, also can synthesize fast cobaltous oxide nano material.
Summary of the invention
The object of the invention is to propose the preparation method of the class A foam A cobaltous oxide nano material that a kind of technique is simple, cost is low and easily mass-produced.
The preparation method who adopts the present invention to propose, the cobaltous oxide nano material making has special nanometer foam structure, has the gauffer of a large amount of nanoscales, comprises projection and the gap of nanoscale.This constitutional features can greatly improve the surface-area of material, and in inner embedded nano space.
The present invention proposes the preparation method of class A foam A cobaltous oxide nano material, is as precursor, by react to prepare cobaltous oxide nano material with alkaline solution take the sub-cobalt of thiocyanic acid.For easy to operate and reduce costs, the present invention prepares the sub-cobalt of thiocyanic acid with the mixed aqueous solution of solubility divalent cobalt and thiocyanate-, then reacts with alkaline solution, prepares class A foam A cobaltous oxide nano material.
In the present invention, described divalent cobalt can adopt cobalt dichloride; Thiocyanate-can adopt Sodium Thiocyanate 99; Alkaline solution can adopt aqueous sodium hydroxide solution.
Concrete preparation process of the present invention is as follows:
The cobalt dichloride aqueous solution and sodium thiocyanate water solution are mixed, stir; Add again in aqueous sodium hydroxide solution reaction for some time; Then suction filtration, washing, dry, obtain cobaltous oxide nano material;
The concentration of the described cobalt dichloride aqueous solution and sodium thiocyanate water solution is 0.1 ~ 1 mol/L; The concentration of described aqueous sodium hydroxide solution is 0.03 ~ 0.5 mol/L;
Reaction times is 1 ~ 48 hour.
In the present invention, in the process of described reaction, can adopt that ultrasonic wave is auxiliary synthetic, mechanical stirring, Stirring (containing stirrer) or mix after the reaction method such as leave standstill again.Specifically can select according to actual needs one kind of.
The nano material that powder x-ray diffraction (XRD) analytical proof makes is cobaltous oxide.Under some experiment condition, in product, can be mixed with the sub-cobalt of aqua oxidation, but can convert cobaltous oxide to by thermolysis.
Scanning electronic microscope (SEM) is observed and is shown that the cobaltous oxide making has special nanometer foam structure, has the gauffer of a large amount of nanoscales, comprises projection and the gap of nanoscale.This constitutional features can greatly improve the surface-area of material, and in inner embedded nano space.
The preparation method that the present invention proposes is very simple, easily produces.In actual production process, can amplify as the case may be industrial scale, comprise raising strength of solution.
The thiocyanate-of using in the present invention can reclaim and recycle in actual production process, both cost-saving, also reduces quantity discharged.Compared with other synthetic methods, synthetic method of the present invention not only cost is low, and the impact of environment is also reduced greatly.
This class A foam A cobaltous oxide nano material that the present invention makes has been widely used, and can be used as the important source material of manufacturing various function alloys and extraordinary cobalt salt, also can be applied to the fields such as magneticsubstance, rechargeable battery, sensor and absorption.
Accompanying drawing explanation
Fig. 1 is the SEM image of class A foam A cobaltous oxide nano material.
Fig. 2 is under high resolving power more, the SEM image of class A foam A cobaltous oxide nano material.
Embodiment
The preparation method of the class A foam A cobaltous oxide nano material that the invention is further illustrated by the following examples proposes.
In reaction flask, add 100 milliliters of cobalt dichloride aqueous solution (concentration: 0.1 mol/L), add again 40 milliliters of sodium thiocyanate water solutions (concentration: 0.5 mol/L), stir after 10 minutes, again this mixing solutions is added in the aqueous sodium hydroxide solution (concentration: 0.05 mol/L) that fills 400 milliliters, with ul-trasonic irradiation 1 hour, suction filtration, washing, dry, obtain cobaltous oxide nano material.
Powder x-ray diffraction (XRD) analytical results is consistent with the analytical results of known cobaltous oxide, proves that product is cobaltous oxide.But in product, be also mixed with the sub-cobalt of aqua oxidation.
In Fig. 1, Fig. 2, show the gauffer that has a large amount of nanoscales, comprise projection and the gap of nanoscale.
embodiment 2
In reaction flask, add 100 milliliters of cobalt dichloride aqueous solution (concentration: 0.1 mol/L), add again 40 milliliters of sodium thiocyanate water solutions (concentration: 0.5 mol/L), stir after 10 minutes, again this mixing solutions is added in the aqueous sodium hydroxide solution (concentration: 0.1 mol/L) that fills 400 milliliters, react suction filtration, washing 2 hours, dry, obtain cobaltous oxide nano material.
Structural analysis confirms that product is cobaltous oxide.
The result of typical SEM image similar embodiment 1.
Claims (5)
1. a preparation method for class A foam A cobaltous oxide nano material, is characterized in that, take the sub-cobalt of thiocyanic acid as presoma, and synthetic class A foam A cobaltous oxide nano material; Specifically prepare the sub-cobalt of thiocyanic acid with the mixed aqueous solution of divalent cobalt and thiocyanate-, then mix with alkaline solution, prepare cobaltous oxide nano material by chemical reaction.
2. the preparation method of class A foam A cobaltous oxide nano material according to claim 1, is characterized in that, described divalent cobalt adopts cobalt dichloride; Described thiocyanate-adopts Sodium Thiocyanate 99; Described alkaline solution adopts aqueous sodium hydroxide solution.
3. according to the preparation method of the class A foam A cobaltous oxide nano material described in claim 2, it is characterized in that concrete preparation process is as follows:
The cobalt dichloride aqueous solution and sodium thiocyanate water solution are mixed, stir; Add again in aqueous sodium hydroxide solution reaction for some time; Then suction filtration, washing, dry, obtain cobaltous oxide nano material;
The concentration of the described cobalt dichloride aqueous solution and sodium thiocyanate water solution is 0.1 ~ 1 mol/L; The concentration of described aqueous sodium hydroxide solution is 0.03 ~ 0.5 mol/L;
Reaction times is 1 ~ 48 hour.
4. the preparation method of class A foam A cobaltous oxide nano material according to claim 3, is characterized in that in the process of described reaction, adopt that ultrasonic wave is auxiliary synthetic, mechanical stirring, Stirring or mix after standing reaction method again.
5. the cobaltous oxide nano material being obtained by preparation method described in claim 1.
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| CN201410041050.4A CN103771543A (en) | 2014-01-28 | 2014-01-28 | Foam-like cobaltous oxide nano material and preparation method thereof |
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| CN201410041050.4A CN103771543A (en) | 2014-01-28 | 2014-01-28 | Foam-like cobaltous oxide nano material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408694A (en) * | 2018-03-01 | 2018-08-17 | 复旦大学 | The environment-friendly preparation method thereof of metal oxide nano-material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962462A (en) * | 2006-11-23 | 2007-05-16 | 南京大学 | Process for preparing nanometer cobalt oxide |
| US20110052896A1 (en) * | 2009-08-27 | 2011-03-03 | Shrisudersan Jayaraman | Zinc Oxide and Cobalt Oxide Nanostructures and Methods of Making Thereof |
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- 2014-01-28 CN CN201410041050.4A patent/CN103771543A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962462A (en) * | 2006-11-23 | 2007-05-16 | 南京大学 | Process for preparing nanometer cobalt oxide |
| US20110052896A1 (en) * | 2009-08-27 | 2011-03-03 | Shrisudersan Jayaraman | Zinc Oxide and Cobalt Oxide Nanostructures and Methods of Making Thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王世华等: "《无机化学教程》", 30 September 2000, article "液相法", pages: 336 - 17-19 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408694A (en) * | 2018-03-01 | 2018-08-17 | 复旦大学 | The environment-friendly preparation method thereof of metal oxide nano-material |
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Application publication date: 20140507 |