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Flower-like nanometer cobalt hydroxide material and preparation method thereof

A technology of cobalt hydroxide and morphology, which is applied in the field of nanomaterials and can solve the problems of few three-dimensional structure reports

Inactive Publication Date: 2012-12-05
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few reports on the three-digit structure
Although self-assembled hollow spheres and cobalt hydroxide multidimensional structures of various shapes have to be reported, these multidimensional structures are all in the microscopic scale, and self-assembled nanoscale cobalt hydroxide multidimensional structures are rarely reported.

Method used

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  • Flower-like nanometer cobalt hydroxide material and preparation method thereof
  • Flower-like nanometer cobalt hydroxide material and preparation method thereof
  • Flower-like nanometer cobalt hydroxide material and preparation method thereof

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Embodiment 1

[0019] The preparation of embodiment 1 material A

[0020] Mix 5g of Np-12, 5g of cyclohexane and 3g of n-octanol to obtain solution A; dissolve 1g of cobalt acetate in 3g of deionized water; Add 2g of water to A to obtain oil-water two-component system C. Slowly drip solution C into B under stirring, and age for 2 hours; then, centrifuge to obtain a solid; add 30mL of ethanol to the solid, heat and stir for 10min, and centrifuge; repeat this process The steps are repeated until the surfactant is completely removed; the final nanomaterial is obtained by drying at 80°C. The composition and structure of material A was confirmed by powder X-ray diffraction (XRD) as α-Co(OH) 2 pure phase ( figure 1 ). From the transmission electron microscope image ( figure 2 ) and SEM ( image 3 ), it can be seen that the multidimensional structure of cobalt hydroxide is formed by the aggregation of cobalt hydroxide nanosheets, and the whole aggregate presents a flower-like morphology, abou...

Embodiment 2

[0021] The preparation of embodiment 2 material B

[0022] Mix 1g sodium dodecylbenzenesulfonate, 6g toluene, and 2g n-hexanol to obtain solution A; dissolve 1g cobalt nitrate in 2g deionized water to obtain solution B, add it to A to obtain oil-water system B, and add 0.03g hydrogen Sodium oxide was dissolved in 2g of water and added to A to obtain oil-water system C. Under stirring, slowly drop solution C into B and age for 10 hours; then, centrifuge to obtain a solid; add 30ml of ethanol to this solid, heat and stir for 10 minutes , centrifuge; repeat this step several times until the surfactant is completely removed; dry at 80°C to obtain the final nanomaterial.

Embodiment 3

[0023] The preparation of embodiment 3 material C

[0024] Take 4g of cetyltrimethylammonium bromide, 12g of n-hexane, and 4g of n-hexanol and mix to obtain solution A; dissolve 1g of cobalt chloride in 3g of deionized water to obtain solution B; add it to A to obtain oil-water system B, 0.4 g n-butylamine was dissolved in 3 g n-hexane to obtain solution D. Under stirring, slowly drop solution D into B, and age for 1 hour; then, centrifuge to obtain a solid; add 30ml of ethanol to the solid, heat and stir for 10 minutes, and centrifuge; repeat this step several times until the surfactant is completely removed; Dry at 80°C to obtain the final nanomaterial.

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Abstract

Disclosed are a flower-like nanometer cobalt hydroxide material and a preparation method thereof. The material is synthesized by the self-assembling method. The preparation method includes that metallic cobalt is reacted with alkali in an oil and water double-phase system at the room temperature, and the flower-like nanometer cobalt hydroxide material is prepared under a guiding effect and a wrapping effect of a soft template with the participation of the soft template. The preparation method is simple to operate and easy to control. The size of a multi-dimensional structure a prepared cobalt hydroxide nanoflower ranges from 300 nanometers to 500 nanometers approximately, the multi-dimensional structure of the nanoflower is self-assembled by cobalt hydroxide plates, and the nanoflower is high in specific surface area and pore volume, and can be applied to fields of battery materials, catalytic materials and the like.

Description

technical field [0001] The invention belongs to nanometer materials, in particular to a nanometer metal cobalt hydroxide material with a flower shape and its preparation. Background technique [0002] In recent years, the synthesis of multidimensional structural materials by self-assembly is a hot spot in material synthesis, and morphology control is a key issue in the synthesis of functional materials. Because cobalt hydroxide has unique physical and chemical properties, such as layered structure and good electrochemical redox performance, it has a wide range of applications in the fields of catalysis, electrochemical and gas phase sensors, and has aroused widespread interest. The morphology of cobalt hydroxide has an important influence on its properties and applications. The morphology of cobalt hydroxide has been extensively studied, and one-dimensional structures such as nanosheets, nanowires, nanorods, and nanotubes have been successfully synthesized. However, there ...

Claims

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Application Information

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IPC IPC(8): C01G51/04B82Y40/00
Inventor 徐杰王敏马继平陈晨高进苗红
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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