Highly uniform zinc oxide submicrospheres with controllable particle size and preparation method thereof

A kind of zinc oxide, submicron technology, applied in the field of highly uniform zinc oxide submicron ball and its preparation

Active Publication Date: 2021-05-11
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no report on the one-step synthesis of zinc oxide submicron spheres using al

Method used

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  • Highly uniform zinc oxide submicrospheres with controllable particle size and preparation method thereof
  • Highly uniform zinc oxide submicrospheres with controllable particle size and preparation method thereof
  • Highly uniform zinc oxide submicrospheres with controllable particle size and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The monodisperse zinc oxide submicron spheres with a particle size of 460±10nm are prepared by a multi-step growth method of precisely controlling the particle size. The specific preparation method is:

[0029] 1) Weigh 6.00g of polyvinylpyrrolidone with an average molecular weight of 40000, measure 450ml of ethanol, and stir and disperse the polyvinylpyrrolidone in the ethanol solution at room temperature;

[0030] 2) Weigh 1.08g of zinc acetate dihydrate, measure 50ml of ethylene glycol, and disperse the zinc acetate dihydrate in the ethylene glycol solution with ultrasonic stirring at room temperature;

[0031] 3) Mix the solutions obtained in steps 1) and 2), heat to 75°C, and stir for 2-4h;

[0032] 4) Measure 15ml of deionized water, add the deionized water into the solution obtained in step 3) and stir rapidly for 2 minutes;

[0033] 5) Stir and react in an oil bath at 75°C for 1.5h;

[0034] 6) The obtained zinc oxide submicron spheres are washed with ethanol...

Embodiment 2

[0039] The monodisperse zinc oxide submicron spheres with a particle size of 150±10nm are prepared through a multi-step growth method of precisely controlling the particle size. The specific preparation method is:

[0040] 1) Weigh 6.00g of polyvinylpyrrolidone with an average molecular weight of 40000, measure 450ml of ethanol, and stir and disperse the polyvinylpyrrolidone in the ethanol solution at room temperature;

[0041] 2) Weigh 0.54g of zinc acetate dihydrate, measure 50ml of ethylene glycol, and disperse the zinc acetate dihydrate in the ethylene glycol solution with ultrasonic stirring at room temperature;

[0042] 3) Mix the solutions obtained in steps 1) and 2), heat to 75°C, and stir for 2-4h;

[0043] 4) Measure 15ml of deionized water, add the deionized water into the solution obtained in step 3) and stir rapidly for 2 minutes;

[0044] 5) Stir and react in an oil bath at 75°C for 1.5h;

[0045] 6) The obtained zinc oxide submicron spheres are washed with et...

Embodiment 3

[0048] The monodisperse zinc oxide submicron spheres with a particle size of 320±10nm are prepared through a multi-step growth method of precisely controlling the particle size. The specific preparation method is:

[0049] 1) Weigh 6.00g of polyvinylpyrrolidone with an average molecular weight of 40000, measure 450ml of ethanol, and stir and disperse the polyvinylpyrrolidone in the ethanol solution at room temperature;

[0050] 2) Weigh 0.81g of zinc acetate dihydrate, measure 50ml of ethylene glycol, and disperse the zinc acetate dihydrate in the ethylene glycol solution with ultrasonic stirring at room temperature;

[0051] 3) Mix the solutions obtained in steps 1) and 2), heat to 75°C, and stir for 2-4h;

[0052] 4) Measure 15ml of deionized water, add the deionized water into the solution obtained in step 3) and stir rapidly for 2 minutes;

[0053] 5) Stir and react in an oil bath at 75°C for 1.5h;

[0054] 6) The obtained zinc oxide submicron spheres are washed with et...

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Abstract

The invention discloses highly uniform zinc oxide submicrospheres with controllable particle size and a preparation method thereof, which belong to the field of preparation of photonic crystal materials. According to the method, an alcohol-water system is adopted, so that the temperature and pressure required by synthesis of the zinc oxide microspheres are reduced, and the zinc oxide polycrystalline submicrospheres with good monodispersity are synthesized more cleanly. In the nucleation process, the temperature, the initial rotating speed, the zinc source and the deionized water amount are regulated and controlled, so that the nucleation process is rapidly carried out. In the growth process, mass transfer is further controlled by introducing polyhydric alcohol to control the viscosity of a system, and zinc oxide submicrospheres with stable particle sizes can be obtained through one-step reaction. According to the synthetic method, the zinc oxide submicrospherewith the specific target particle size can be obtained only by changing the amount of the zinc source and the variety and amount of the polyhydric alcohols. The adjustable particle size range of the zinc oxide submicrospheres prepared by the method is obviously enlarged, the adjustable range is 100-800 nm, and the monodispersity of the zinc oxide submicrospheres is good.

Description

technical field [0001] The invention relates to a highly uniform zinc oxide submicron sphere with controllable particle size and a preparation method thereof, belonging to the field of preparation of photonic crystal materials. Background technique [0002] ZnO is a II-VI semiconductor material with a theoretical refractive index of 2.1, a direct bandgap of about 3.4eV, and an exciton binding energy of about 60meV, which makes it thermally stable at room temperature. ZnO has been widely used in the fields of photo-splitting water, nanogenerators, high-sensitivity sensors, and photonic crystals. Studies have found that semiconductor materials at the micro-nano scale exhibit many unique physical and chemical phenomena, such as quantum effects, nonlinear optical effects, and so on. Monodisperse microspheres eliminate the influence of shape on material properties, and the controllable particle size of microspheres can further study the influence of material size on properties. ...

Claims

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Application Information

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IPC IPC(8): C01G9/02B82Y30/00B82Y40/00
CPCC01G9/02B82Y30/00B82Y40/00C01P2004/62C01P2004/32
Inventor 武素丽任杰
Owner DALIAN UNIV OF TECH
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