Controllable double-layer prismatic-disc-shaped micron zinc oxide and preparation method thereof

Abstract

The invention discloses controllable double-layer prismatic-disc-shaped micron zinc oxide and a preparation method thereof, and belongs to the technical field of preparation of micro-nano materials. The preparation method comprises the steps of uniformly dispersing a zinc source in a solvent, dropwise adding an alkali solution, and carrying out double decomposition reaction to obtain a reactant solution; carrying out hydrothermal reaction on the reactant solution, and naturally cooling after the hydrothermal reaction is finished to obtain a product solution; and after the obtained product solution is subjected to centrifugal treatment, reserving a solid product, washing the obtained solid product, and then drying to obtain the controllable double-layer prismatic-disc-shaped micron zinc oxide. The solvent is a mixed solvent of an alcohol solvent and water, and by adjusting the mixing ratio of the alcohol solvent and the water, the controllable adjustment of the size of the side length of the double-layer prismatic disc-shaped micron zinc oxide prismatic disc and the height of the double-layer prismatic disc is realized. The controllable double-layer prismatic-disc-shaped micron zinc oxide with high purity and good crystallinity is prepared through the preparation method with a simple process and has excellent ultraviolet light absorption performance.

Description

technical field

[0001] The invention belongs to the technical field of preparation of micro-nano materials, and relates to a controllable double-layer prism-shaped micron zinc oxide and a preparation method thereof. Background technique

[0002] Zinc oxide (ZnO), as a commonly used chemical additive, is widely used in plastics, silicate products, synthetic rubber, lubricants, paint coatings, ointments, adhesives, food, batteries, flame retardants and other products in the making. At the same time, as an important wide-bandgap semiconductor oxide, the bandgap width is 3.37eV, and it has many excellent physical and chemical properties such as electroluminescence and photocatalysis, making it widely used in photonic devices, gas sensors, photocatalysts and dye-sensitized solar energy. Batteries and other aspects are widely used. The growth mode, growth orientation and morphology of ZnO crystals have an important impact on its physical and chemical properties, so the study of ...

Examples

specific Embodiment approach 1

[0036] Specific embodiment one: present embodiment a kind of preparation method of controllable double-layer prismatic disk micron zinc oxide. The preparation method described in this embodiment can prepare double-layer hexagonal prismatic disc-shaped micron zinc oxide with special structure and properties, which is specifically completed in the following steps:

[0037]1. Prepare a uniform reactant solution: Disperse the zinc source in a mixed solvent of alcohol and water under magnetic stirring, then slowly add the prepared alkali solution to the zinc source solution dropwise, and after the dropwise addition, place it at room temperature (5~40°C) react for a period of time, keep stirring during the dropping process and the reaction process; 2. Hydrothermal reaction: pour the mixed solution into the lining of the hydrothermal reaction kettle, then put it into the hydrothermal reaction kettle and put it in a heating oven Wait for heating in the heating equipment, the reaction ...

Embodiment 1

[0050] A method for preparing controllable double-layer prismatic micron zinc oxide, which is specifically completed according to the following steps:

[0051] 1. Prepare a uniform reactant solution: Dissolve 6mmol of zinc acetate in a mixed solution of 80mL of water and ethanol, including 50mL of water and 30mL of ethanol, and ultrasonically disperse it for 10 minutes, then move it to a magnetic stirring table with a speed of 500rpm , at 25°C, slowly add sodium hydroxide solution (0.25mol / L, 10mL) dropwise to the above solution for metathesis reaction, the rate of addition is 1min / mL, during the process of adding, the solution changes from transparent to milky white After the turbid liquid is added dropwise, continue to stir for 5 minutes; wherein, the mass ratio of zinc acetate to sodium hydroxide is 2.4:1; the reactant solution is obtained after the double decomposition reaction; 2. Hydrothermal treatment: pour the obtained reactant solution Put it into a 100mL hydrothermal...

Embodiment 2

[0056] A method for preparing controllable double-layer prismatic micron zinc oxide, which is specifically completed according to the following steps:

[0057] 1. Prepare a uniform reactant solution: Take 6 mmol of zinc acetate dihydrate and dissolve it in a mixed solution of 30 mL of water and ethanol, including 20 mL of water and 10 mL of ethanol, and ultrasonically disperse it evenly for 10 minutes, then move to a magnetic stirrer with a speed of 500 rpm On the platform, at 25°C, slowly add sodium hydroxide solution (0.15mol / L, 10mL) to the above solution for metathesis reaction. It is a milky white turbid liquid. After the dropwise addition, continue to stir for 5 minutes; wherein, the mass ratio of zinc acetate dihydrate to sodium hydroxide is 4:1; the reactant solution is obtained after the double decomposition reaction; 2. Hydrothermal treatment: the obtained Pour the reactant solution into the lining of a 50mL hydrothermal reaction kettle, put it into the hydrothermal ...

technical field

[0001] The invention belongs to the technical field of preparation of micro-nano materials, and relates to a controllable double-layer prism-shaped micron zinc oxide and a preparation method thereof. Background technique

[0002] Zinc oxide (ZnO), as a commonly used chemical additive, is widely used in plastics, silicate products, synthetic rubber, lubricants, paint coatings, ointments, adhesives, food, batteries, flame retardants and other products in the making. At the same time, as an important wide-bandgap semiconductor oxide, the bandgap width is 3.37eV, and it has many excellent physical and chemical properties such as electroluminescence and photocatalysis, making it widely used in photonic devices, gas sensors, photocatalysts and dye-sensitized solar energy. Batteries and other aspects are widely used. The growth mode, growth orientation and morphology of ZnO crystals have an important impact on its physical and chemical properties, so the study of ...

Examples

specific Embodiment approach 1

[0036] Specific embodiment one: present embodiment a kind of preparation method of controllable double-layer prismatic disk micron zinc oxide. The preparation method described in this embodiment can prepare double-layer hexagonal prismatic disc-shaped micron zinc oxide with special structure and properties, which is specifically completed in the following steps:

[0037]1. Prepare a uniform reactant solution: Disperse the zinc source in a mixed solvent of alcohol and water under magnetic stirring, then slowly add the prepared alkali solution to the zinc source solution dropwise, and after the dropwise addition, place it at room temperature (5~40°C) react for a period of time, keep stirring during the dropping process and the reaction process; 2. Hydrothermal reaction: pour the mixed solution into the lining of the hydrothermal reaction kettle, then put it into the hydrothermal reaction kettle and put it in a heating oven Wait for heating in the heating equipment, the reaction ...

Embodiment 1

[0050] A method for preparing controllable double-layer prismatic micron zinc oxide, which is specifically completed according to the following steps:

[0051] 1. Prepare a uniform reactant solution: Dissolve 6mmol of zinc acetate in a mixed solution of 80mL of water and ethanol, including 50mL of water and 30mL of ethanol, and ultrasonically disperse it for 10 minutes, then move it to a magnetic stirring table with a speed of 500rpm , at 25°C, slowly add sodium hydroxide solution (0.25mol / L, 10mL) dropwise to the above solution for metathesis reaction, the rate of addition is 1min / mL, during the process of adding, the solution changes from transparent to milky white After the turbid liquid is added dropwise, continue to stir for 5 minutes; wherein, the mass ratio of zinc acetate to sodium hydroxide is 2.4:1; the reactant solution is obtained after the double decomposition reaction; 2. Hydrothermal treatment: pour the obtained reactant solution Put it into a 100mL hydrothermal...

Embodiment 2

[0056] A method for preparing controllable double-layer prismatic micron zinc oxide, which is specifically completed according to the following steps:

[0057] 1. Prepare a uniform reactant solution: Take 6 mmol of zinc acetate dihydrate and dissolve it in a mixed solution of 30 mL of water and ethanol, including 20 mL of water and 10 mL of ethanol, and ultrasonically disperse it evenly for 10 minutes, then move to a magnetic stirrer with a speed of 500 rpm On the platform, at 25°C, slowly add sodium hydroxide solution (0.15mol / L, 10mL) to the above solution for metathesis reaction. It is a milky white turbid liquid. After the dropwise addition, continue to stir for 5 minutes; wherein, the mass ratio of zinc acetate dihydrate to sodium hydroxide is 4:1; the reactant solution is obtained after the double decomposition reaction; 2. Hydrothermal treatment: the obtained Pour the reactant solution into the lining of a 50mL hydrothermal reaction kettle, put it into the hydrothermal ...

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