A kind of bird-nest-shaped Co for preparing
3O
4The auxiliary hydrothermal method of tensio-active agent
Technical field
The present invention relates to a kind of special appearance Co that has
3O
4The preparation method, relate to specifically and adopt the Co that has bird-nest-shaped take quadrol or amino dodecane as the hydrothermal method preparation of tensio-active agent
3O
4, belong to technical field of function materials.
Background technology
Co
3O
4Be a kind of important functional materials, be widely used in the fields such as electrochromic device, beramic color, catalysis, solid state sensor, magnetics, solar energy absorption plant and energy storage (intercalation compound of Li-Ion rechargeable battery).Therefore, to Co
3O
4The research work of synthetic method a lot.People have synthesized the Co of various patterns
3O
4, the nanometer ball of hollow (S.A.Makhlouf, J.Magn.Mater. for example, 2002,246:184-190), fibrous (B.B.Lakshmi, et al., Chem.Mater., 1997,9:2544-2550), nanometer rod, nanotube, nano-structure film (A.Gulino, et al., Chem.Mater., 2003,15:3748-3752) etc.The Co of nanometer wire
3O
4Can pass through porous Al
2O
3Or virus (K.T.Nam, et al., Science, 2006,312:885-888) prepare for template.Can obtain Co by the heating cobaltous hydroxide
3O
4Nanometer rod (E.Hosono, et al., J.Mater.Chem., 2005,15:1938-1945).Adopt the method for not adding tensio-active agent, by prepare the nano wire of hollow in different matrix (such as transparent conducting glass, silicon wafer, Copper Foil etc.).
Ren etc. (L.Ren, et al., Chem.Phys.Lett., 2009,476:78-83) take cetyl trimethylammonium bromide (CTAB) as tensio-active agent, through having prepared the cobaltosic oxide nano rod after hydrothermal treatment consists and the roasting.Jiang etc. (J.Jiang, et al., J.Phys.Chem.C, 2010,114:929-932) employing is not added the hydrothermal method of tensio-active agent and has been prepared cobalt oxide porous nano line through the roasting precursor.Zhuo etc. (L.H.Zhuo, et al., Cryst.Growth Des., 2009,9:1-6) mixing solutions take water and methyl alcohol has prepared Co as the alcohol-hydrothermal method of solvent and through the roasting precursor
3O
4Nanotube.The present invention reports that adopting quadrol or amino dodecane is the Co that the hydrothermal method preparation of tensio-active agent has bird-nest-shaped
3O
4Up to now, relevant bird-nest-shaped Co
3O
4The background technology of preparation aspect there is no bibliographical information.
Summary of the invention
The object of the present invention is to provide the auxiliary hydrothermal method preparation of a kind of tensio-active agent to have the Co of bird-nest-shaped
3O
4Novel method.
Preparation provided by the invention has bird-nest-shaped Co
3O
4The preparation method be under agitation condition, ammonia soln to be added drop-wise to contain Co (NO
3)
2Transparent aqueous solution in, Co (NO
3)
2The concentration of the aqueous solution is 0.33~0.34mol/L, controls its pH value between 9~10, and metal ion is precipitated fully.Then add a certain amount of quadrol or amino dodecane, quadrol and Co (NO
3)
2Mol ratio be 2: 3, amino dodecane and Co (NO
3)
2Mol ratio be 43: 100, again it is transferred in the stainless steel cauldron that liner is the 50mL tetrafluoroethylene, volume loading level 80%, put into thermostat container in 120 ℃ of constant temperature 24h, or put into thermostat container in 140 ℃ or 200 ℃ of constant temperature 12h, to be cooled to room temperature, with the turbid solution suction filtration that obtains, solids wash, 60 ℃ of dry 12h, grind after, in air atmosphere, be warming up to 300 ℃ and keep 4h at 300 ℃ with the speed of 1 ℃/min again, obtain bird-nest-shaped Co
3O
4Black powder.
Gained black powder product is characterized with technology such as X-ray diffraction (XRD) instrument, high resolution scanning electron microscopes (HRSEM), and sample is the nest like structure that the surface has laminate structure, and it is the Co of pure phase as can be known by the XRD test
3O
4The Co of nest like structure
3O
4Has important use at aspects such as electrochromic device, beramic color, catalysis, solid state sensor, magnetics, solar energy absorption plant and energy storage.
Description of drawings
Fig. 1 is Co
3O
4XRD spectra
Wherein curve (a) is embodiment 1, and curve (b) is embodiment 2, and curve (c) is embodiment 3;
Fig. 2 is Co
3O
4The HRSEM photo
Wherein (a) is embodiment 1, (b) is embodiment 2, and curve (c) is embodiment 3.
Embodiment
Be further to understand the present invention, the below elaborates with embodiment, and provides accompanying drawing and describe the bird-nest-shaped Co that the present invention obtains
3O
4, but the invention is not restricted to following examples.
Embodiment 1: under the magnetic agitation condition, ammonia soln slowly is added drop-wise to contains 10mmol Co (NO
3)
2The transparent aqueous solution of 30mL in, control its pH value between 9~10, metal ion is precipitated fully.The quadrol that adds again 1mL, then mixed solution is transferred to (80% volume loading level) in the stainless steel cauldron that the 50mL liner is tetrafluoroethylene, put into again thermostat container in 140 ℃ of insulation 12h, afterwards at room temperature cooling, with (60 ℃ of the turbid solution suction filtration, washing, the dryings that obtain, 12h), grind evenly, obtain the target product precursor, again it is placed retort furnace to be warming up to 300 ℃ and keep 4h at 300 ℃ at air atmosphere with the speed of 1 ℃/min, namely get single-phase cubic spinel type Co
3O
4Powder, pattern are the bird-nest-shaped that has more uniformly the scale surface, and diameter is about 36 μ m, and its XRD spectra is seen Fig. 1 (a), and the HRSEM photo is seen Fig. 2 (a).
Embodiment 2: under the magnetic agitation condition, ammonia soln slowly is added drop-wise to contains 10mmol Co (NO
3)
2The transparent aqueous solution of 30mL in, control its pH value between 9~10, metal ion is precipitated fully.The amino dodecane that adds again 1mL, then it is transferred to (80% volume loading level) in the stainless steel cauldron that the 50mL liner is tetrafluoroethylene, put into again in the thermostat container in 120 ℃ of insulation 24h, afterwards at room temperature cooling, with (60 ℃ of the turbid solution suction filtration, washing, the dryings that obtain, 12h), grinding evenly obtains the target product presoma, place retort furnace to be warming up to 300 ℃ and at 300 ℃ of lower 4h of maintenance at air atmosphere with the speed of 1 ℃/min, namely get single-phase cubic spinel type Co
3O
4Powder, pattern are more uniform ganoid bird-nest-shaped, and diameter is about 42 μ m, and its XRD spectra is seen Fig. 1 (b), and the HRSEM photo is seen Fig. 2 (b).
Embodiment 3: under the magnetic agitation condition, ammonia soln slowly is added drop-wise to contains 10mmol Co (NO
3)
2The transparent aqueous solution of 30mL in, control its pH value between 9~10, metal ion is precipitated fully.The quadrol that adds again 1mL, then it is transferred to (80% volume loading level) in the stainless steel cauldron that the 50mL liner is tetrafluoroethylene, put into again in the thermostat container in 200 ℃ of insulation 12h, afterwards at room temperature cooling, with (60 ℃ of the turbid solution suction filtration, washing, the dryings that obtain, 12h), grinding evenly obtains the target product presoma, place retort furnace to be warming up to 300 ℃ and at 300 ℃ of lower 4h of maintenance at air atmosphere with the speed of 1 ℃/min, namely get single-phase cubic spinel type Co
3O
4Powder, pattern are the bird-nest-shaped with scale surface, and diameter is about 30 μ m, and its XRD spectra is seen Fig. 1 (c), and the HRSEM photo is seen Fig. 2 (c).