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Low-temperature preparation method of morphology-controllable zinc oxide nano materials

A zinc oxide nano and morphology technology, applied in the direction of zinc oxide/zinc hydroxide, nanotechnology, nanotechnology, etc., to achieve the effect of simple and easy preparation method, wide adjustable range of parameters and strong repeatability

Inactive Publication Date: 2014-12-24
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the same experimental system, by adjusting one experimental condition, a method for artificially and controllably obtaining multiple (four or more) zinc oxide nanomaterials with different morphologies has not been reported yet.

Method used

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  • Low-temperature preparation method of morphology-controllable zinc oxide nano materials
  • Low-temperature preparation method of morphology-controllable zinc oxide nano materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 0.01mol of cetyltrimethylammonium bromide and add it to 60ml of ethanol-water solution, stir rapidly at 20°C to mix evenly, then weigh 0.01mol of zinc nitrate and disperse it in the microemulsion; configure 0.1mol / Add L of sodium hydroxide solution into the zinc source microemulsion at a certain speed, and continue stirring at 20° C. for 20 minutes. After the reaction, the precipitated product was left to stand for 2 hours, washed and dried to obtain zinc hydroxide nanorods.

Embodiment 2

[0025] Weigh 0.01mol of sodium dodecylbenzenesulfonate and add it to 60ml of ethanol-water solution, stir rapidly at 30°C to mix evenly, then weigh 0.01mol of zinc nitrate and disperse it in the microemulsion; configure 0.1mol / L Ammonia solution was added to the zinc source microemulsion at a certain speed, and stirred continuously at 30° C. for 20 minutes. After the reaction was completed, it was left to stand for 2 hours, and the precipitated product was washed and dried.

[0026] X-ray powder diffraction characterization results show that the prepared material is zinc hydroxide; scanning electron microscope characterization results show that the prepared material is in the shape of nanorods, the diameter of nanorods is about 100 nanometers, and the length is between 3 and 5 microns. between.

Embodiment 3

[0028] Weigh 0.05mol of cetyltrimethylammonium bromide and add it to 60ml of ethanol-water solution, stir rapidly at 50°C to mix evenly, then weigh 0.05mol of zinc acetate and disperse it in the microemulsion; configure 0.3mol / L of ammonia solution was added to the zinc source microemulsion at a certain speed, and stirred continuously at 50° C. for 20 minutes. After the reaction was completed, it was left to stand for 2 hours, and the precipitated product was washed and dried.

[0029] X-ray powder diffraction characterization results show that the obtained material is zinc oxide in the wurtzite crystal form; scanning electron microscope characterization results show that the obtained material is a helical zinc oxide nanoflower, and the diameter of the nanorod is about 100 nanometers. The length is about 3 microns.

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Abstract

The invention relates to a preparation method of morphology-controllable zinc oxide nano materials. The preparation method comprises the following steps: adding 0.01-0.2mol / L of a surfactant into an alcohol-aqueous solution with a volume ratio of 5 to 1, quickly stirring the solution at 20-100 DEG C to uniformly mix the solution; then, weighing and dispersing 0-0.2mol / L of a stabilizer and a zinc source into micro emulsion respectively; preparing 0.1-0.6mol / L of alkali liquor, adding the alkali liquor into zinc source micro emulsion at a speed of 2-3 days / second, continuously stirring for 20 minutes at 20-100DEG C; standing for 2-12 hours after the reaction is ended, washing precipitation products and drying the washed precipitation products to obtain zinc oxide nano material products with different morphologies. According to the preparation method disclosed by the invention, the process and the flow are simple and convenient, the adjustable range of the parameters is wide, the product size is controllable, the dispersion is good, the repeatability is good, the cost is low, the calcination is not needed, low carbon and environment-friendliness can be achieved, and various nano zinc oxide products with different morphologies can be prepared at the normal temperature or a low temperature.

Description

technical field [0001] The invention relates to a low-temperature preparation method capable of controlling the morphology of zinc oxide nanomaterial products, and belongs to the technical field of inorganic nanomaterial preparation. Background technique [0002] ZnO is an important multifunctional semiconductor material, which has a wide energy gap (3.37 eV) and high exciton binding energy (60 meV) at room temperature, and its excitons can exist at room temperature and above. Zinc oxide is inexpensive, non-toxic, biodegradable and biocompatible. As an important semiconductor functional material, zinc oxide has excellent thermal stability and unique mechanical, optical, and electrical properties, so it has important applications in electronics, optics, optoelectronics, lasers, and light-emitting diodes. [0003] Zinc oxide possesses piezoelectric and pyroelectric properties, making it one of the most promising candidates for applications in sensors, transducers, generators,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B82Y30/00B82Y40/00
Inventor 何丹农林琳许晓玉
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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