Rapid and simple preparation method of nano-zinc oxide

Abstract

The invention relates to a rapid and simple preparation method of nano-zinc oxide, which takes zinc chloride and sodium hydroxide as raw materials, takes the sodium hydroxide as a strong alkaline regulator, takes oleic acid as a precipitant, takes anhydrous ethanol as a solvent and a centrifugal separating agent, takes deionized water as the solvent and a cleaning agent and takes argon as protective gas. The rapid and simple preparation method comprises the steps of firstly preparing zinc chloride and sodium hydroxide water solution, then mixing with the oleic acid and the anhydrous ethanol for forming solution, carrying out chemical reaction and grain growth under the state of 20 DEG C, carrying out high-speed centrifugal separation, washing and vacuum drying, and finally preparing the white, granular, petal-shaped and single crystal nano-zinc oxide. The preparation method is rapid and simple and can be completed within 4-5 hours without the need of heating, the product has regular and clear appearance, the diameter of single crystal is 2-4mu m, the thickness of single flake is 4-5nm, the chemical and physical performances are stable, the prepration cost is low, the yield can be as high as 92.5%, the product has high purity which can achieve 99.7%, so that the preparation method is the ideal rapid and simple preparation method of the nano-zinc oxide.

Description

technical field [0001] The invention relates to a quick and simple preparation method of nanometer zinc oxide, which belongs to the technical field of preparation methods and applications of inorganic semiconductor light-emitting materials. Background technique [0002] Zinc oxide, commonly known as zinc white, belongs to hexagonal wurtzite structure, its appearance is white or light yellow crystal or powder, non-toxic, odorless, amphoteric oxide, insoluble in water and ethanol, soluble in strong acid And strong alkali, easy to absorb carbon dioxide and water in the air, especially active zinc oxide. [0003] Zinc oxide is a wide-bandgap semiconductor luminescent material, which can produce ultraviolet light with a wavelength of 370-400nm after being excited by photons and electrons, as well as visible light with different wavelengths of blue, green and yellow, so it has a wide application prospect in the field of luminescence. [0004] Nano-zinc oxide is a kind of high-pur...

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Problems solved by technology

[0004] Nano-zinc oxide is a kind of high-purity zinc oxide. Its preparation method has complex processes, such as solid-phase method, liquid-phase method, and gas-phase method; the solid-phase method is to grind the raw materials, dry them, and decompose them by heat treatment, but the subsequent processing is complicated. ; The liquid phase method includes chemical precipitation method and sol-gel method, which mainly dissolves, precipitates and heat treats the raw materials, but the process is long and the yield is low; the gas phase method is to sublimate the raw materials at high temperature, convert and reduce the form, and produce zinc oxide , but the process is long, requiring high equipment and high cost

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