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Method for preparing monodisperse zinc oxide ultrathin nanosheets

A monodisperse, zinc oxide technology, applied in the direction of zinc oxide/zinc hydroxide, nanotechnology, etc., can solve the problems that affect the excellent characteristics of ZnO, reduce the specific surface area, etc., and achieve adjustable shape, simple process, and short reaction cycle Effect

Inactive Publication Date: 2013-02-20
JIUJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the thickness of the ZnO nanosheets prepared by them is more than 20nm, which greatly reduces its specific surface area, thus affecting many excellent properties of ZnO.

Method used

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  • Method for preparing monodisperse zinc oxide ultrathin nanosheets
  • Method for preparing monodisperse zinc oxide ultrathin nanosheets
  • Method for preparing monodisperse zinc oxide ultrathin nanosheets

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Weigh zinc acetate (Zn(CH 3 COO) 3 ×2H 2 O) 0.11g, sodium nitrate (NaNO 3 ) 0.17g in a three-necked bottle, add 10ml of absolute ethanol, place the three-necked bottle on a magnetic stirrer, and stir at room temperature until it is completely dissolved and becomes a colorless transparent clear solution. Measure 4ml of oleic acid, 3ml of oleylamine and 5ml of 1-octadecene into a three-necked flask, stir continuously with magnetic force, heat to 70~80°C with an electric heating mantle, and remove absolute ethanol. Access to N 2 gas, heat the solution to 120°C, and remove the moisture. Under magnetic stirring and N 2 Under protection, the solution was rapidly heated to 280° C., kept for 45 minutes, and then naturally cooled to room temperature. Add absolute ethanol to the reaction product, centrifuge to obtain a filter cake, wash with absolute ethanol again, centrifuge, and then uniformly disperse the filter cake in n-hexane to obtain long strip ZnO nanosheets with a...

Embodiment 2

[0026] Weigh zinc acetate (Zn(CH 3 COO) 3 ×2H 2 O) 0.11g, sodium nitrate (NaNO 3 ) 0.17g in a three-necked bottle, add 10ml of absolute ethanol, place the three-necked bottle on a magnetic stirrer, and stir at room temperature until it is completely dissolved and becomes a colorless transparent clear solution. Measure 3ml of oleic acid, 2ml of oleylamine and 7ml of 1-octadecene into a three-necked flask, stir continuously with magnetic force, and heat to 70~80°C with an electric heating mantle to remove absolute ethanol. Access to N 2 gas, heat the solution to 120°C, and remove the moisture. Under magnetic stirring and N 2 Under protection, the solution was rapidly heated to 280° C., kept for 45 minutes, and then naturally cooled to room temperature. Add absolute ethanol to the reaction product, centrifuge to obtain a filter cake, wash with absolute ethanol again, centrifuge, and then uniformly disperse the filter cake in n-hexane to obtain nearly circular ZnO nanosheets...

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Abstract

The invention relates to a method for preparing monodisperse zinc oxide ultrathin nanosheets, belonging to the field of inorganic nanometer material preparation technologies. The method comprises the steps of: by taking zinc acetate as a precursor, taking oleic acid as a surfactant and taking high-boiling point organic reagents such as oleylamine and 1-octadecene as solvents, adding a mineralizer, carrying out N2 protection, and magnetically stirring and heating under a temperature of 270-290 DEG C for 30-60min to prepare zinc oxide ultrathin nanosheets with various shapes such as strip shape and circular shape, wherein the thickness is 1.1nm. The method is simple in process, short in reaction period, adjustable and uniform in shapes, and free of high-temperature thermal treatment. The prepared ZnO nanosheets have relatively large specific surface area and have wide application prospect in the field of photocatalysis, solar cells, photoelectronic devices, sensors and the like.

Description

[0001] technical field [0002] The invention relates to a method for preparing monodisperse zinc oxide ultrathin nanosheets, belonging to the technical field of inorganic nanomaterial preparation. [0003] Background technique [0004] Zinc oxide (ZnO) is an important II-VI wide bandgap semiconductor with many excellent properties. Compared with traditional materials, nano-ZnO exhibits many special properties in magnetism, electricity, light, mechanics, etc. due to quantum size effects, surface interface effects, etc., and can be widely used in photocatalysis, solar cells, optoelectronic devices, sensors, etc. and other fields, has broad application prospects. [0005] In recent years, researchers have tried to use different raw materials and different preparation methods in order to synthesize high-quality ZnO nanomaterials with unique morphology, good dispersion, and uniform particle size. Due to their more remarkable optical and catalytic properties, one-dimensional Z...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B82Y40/00
Inventor 王殿元
Owner JIUJIANG UNIVERSITY
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