Cotton-mass-shaped cobalt phosphate sphere and preparation method thereof

A technology of cobalt phosphate balls and cobalt phosphate nanometers, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of cobalt phosphate and other problems, avoid poor dispersion, high yield, and low reaction temperature Effect

Active Publication Date: 2018-07-27
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Cotton-mass-shaped cobalt phosphate sphere and preparation method thereof
  • Cotton-mass-shaped cobalt phosphate sphere and preparation method thereof
  • Cotton-mass-shaped cobalt phosphate sphere and preparation method thereof

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Embodiment 1

[0029] 1.1 Add 10mL of water and 40mL of absolute ethanol to 4mmol of hexamethylenetetramine and 10mmol of sodium dihydrogen phosphate dihydrate, and stir well to obtain a uniform solution;

[0030] 1.2 Add 2 mmol of cobalt nitrate hexahydrate to the homogeneous solution in 1.1, and stir until the cobalt nitrate is completely dissolved to obtain a mixed solution;

[0031] 1.3 Move the mixed solution obtained in 1.2 into a polytetrafluoroethylene-lined autoclave for hydrothermal reaction, the temperature is 110°C, the hydrothermal time is 3h, and the reaction solution is obtained after the reaction;

[0032] 1.4 Centrifuge, wash and dry the reaction solution to obtain the precursor;

[0033] 1.5 Raise the temperature of the precursor to 400°C at a rate of 5°C / min and keep it warm for 1 hour to obtain cobalt phosphate spheres.

[0034] figure 1 is the X-ray diffraction pattern of the obtained sample, as can be seen from the figure, the obtained material is pure cobalt phosphat...

Embodiment 2

[0036] 2.1 Add 10mL of water and 40mL of absolute ethanol to 8mmol of hexamethylenetetramine and 10mmol of sodium dihydrogen phosphate dihydrate, and stir well to obtain a uniform solution;

[0037] 2.2 Add 2 mmol of cobalt nitrate hexahydrate to the homogeneous solution in 2.1, and stir until the cobalt nitrate is completely dissolved to obtain a mixed solution;

[0038] 2.3 Move the mixed solution obtained in 2.2 into a polytetrafluoroethylene-lined autoclave for hydrothermal reaction, the temperature is 110°C, the hydrothermal time is 3h, and the reaction solution is obtained after the reaction;

[0039] 2.4 Centrifuge, wash and dry the reaction solution to obtain the precursor;

[0040] 2.5 Raise the temperature of the precursor to 400°C at a rate of 5°C / min and keep it warm for 1 hour to obtain cobalt phosphate spheres.

[0041] The morphology of the obtained cobalt phosphate balls is as follows image 3 As can be seen from the figure, the structure of the product obtai...

Embodiment 3

[0043] 3.1 Add 10mL of water and 40mL of absolute ethanol to 6mmol of hexamethylenetetramine and 10mmol of sodium dihydrogen phosphate dihydrate, and stir evenly to obtain a uniform solution;

[0044] 3.2 Add 2 mmol of cobalt nitrate hexahydrate to the homogeneous solution in 3.1, and stir until the cobalt nitrate is completely dissolved to obtain a mixed solution;

[0045] 3.3 Move the mixed solution obtained in 3.2 into a polytetrafluoroethylene-lined autoclave for hydrothermal reaction, the temperature is 110° C., the hydrothermal time is 3 hours, and the reaction solution is obtained after the reaction;

[0046] 3.4 Centrifuge, wash and dry the reaction solution to obtain the precursor;

[0047] 3.5 Raise the temperature of the precursor to 400°C at a rate of 5°C / min and keep it warm for 1 hour to obtain cobalt phosphate spheres.

[0048] The morphology of the obtained cobalt phosphate balls is as follows Figure 4 As can be seen from the figure, the structure of the pro...

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Abstract

The invention discloses a cotton-mass-shaped cobalt phosphate sphere and a preparation method thereof. The cobalt phosphate sphere is composed of cobalt phosphate nanoribbons. The preparation method comprises the steps: mixing hexamethylene tetramine, phosphate, water and alcohol, and carrying out stirring to obtain a uniform solution; then, adding a cobalt salt, and carrying out uniform stirringto obtain a mixed solution; carrying out a hydrothermal reaction on the mixed solution to obtain a precursor; and calcining the precursor to obtain the cobalt phosphate sphere. The preparation methodis low in reaction temperature, simple in preparation process, high in yield and good in repeatability, the assistance of a surfactant and a template is not needed, and the obtained product is specialin shape, not only has the high reaction activity of a nanomaterial, but also avoids the defect of poor dispersibility of the nanomaterial due to agglomeration and has a wide application prospect infields such as lithium ion batteries, supercapacitors, gas sensing and catalysis.

Description

technical field [0001] The invention relates to a cobalt phosphate ball with a special shape, and relates to a cotton-like cobalt phosphate ball composed of cobalt phosphate nanobelts and a preparation method thereof, belonging to the technical field of inorganic materials. Background technique [0002] With the depletion of global fossil energy and the increasing environmental pollution, finding new alternative energy has become an urgent problem for all countries. Cobalt phosphate has a wide range of applications in lithium-ion batteries, supercapacitors, catalysis and other fields, and has become a promising phosphate. At present, there are many methods to prepare cobalt phosphate materials with various shapes. For example, CN201410453227.1 discloses a method for preparing cobalt phosphate powder materials. Materials; CN201510819184.9 discloses a preparation method and application of cobalt phosphate ultra-small nanodisks, ultra-thin nanosheets, and ultra-fine nanowires,...

Claims

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Application Information

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IPC IPC(8): C01B25/37B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00C01B25/37C01P2002/72C01P2004/03C01P2004/50C01P2004/61
Inventor 程新李举平张丽娜杨萍
Owner UNIV OF JINAN
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