Method for repairing nano stick of zinc oxide in even diameter

A zinc oxide nanorod, uniform technology, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problem of difficulty in preparing zinc oxide nanorods, etc., and achieve the effects of easy operation, low reaction temperature and uniform diameter

Inactive Publication Date: 2005-10-26
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current sol-gel preparation method is difficult to prepare ZnO nanorods with uniform diameter.

Method used

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  • Method for repairing nano stick of zinc oxide in even diameter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The inventive method prepares the example of zinc oxide nanorod:

[0016] Dissolve zinc acetate in absolute ethanol, stir fully at 0°C to prepare a suspension with a concentration of 2%, and dissolve lithium hydroxide in absolute ethanol at room temperature to prepare a lithium hydroxide solution. The molar concentration Twice that of zinc acetate solution. An equal volume of lithium hydroxide solution was added dropwise to the stirred zinc acetate solution using a dropper, and the mixed solution was maintained at 0°C. Then the above mixed solution was sealed in a high-pressure reaction kettle, kept at 150°C for 10 hours, centrifuged to separate the reaction solution, fully washed with absolute ethanol, and dried to obtain zinc oxide nanorods with uniform diameters. The transmission electron microscope photo of the product See figure 1 .

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Abstract

The method for preparing zinc oxide nano rod with uniform diameter includes the following steps: (1) dissolving zinc acetate in absolute ethanol or absolute methanol, fully stirring them at zero deg.C to obtain suspended liquor whose concentration is 0.5-30%, dissolving lithium hydroxide in absolute ehtanol or absolute methanol at room temperature to obtain lithium hydroxide solution whose molar concentration is twice that of zinc acetate; (2). under the temperature of zero deg.C drop-by-drop adding isopyknic lithium hydroxide solution to stirring zinc acetate solution to obtain white colloidal mixed solution; (3) placing said colloidal solution into a hydrothermal reactor, sealing said reactor, heat-insulating for 5-24 hr, at 80-200 deg.C, and taking out reaction solution; and (4). centrifugally-separating reaction solution, fully washing separated material by using absolute ethanol, drying at room temp. so as to obtain the invented product.

Description

technical field [0001] The invention relates to a method for preparing zinc oxide nanorods with uniform diameters. Background technique [0002] Nano-zinc oxide is a multifunctional new inorganic material, and its particle size is about 1-100 nanometers. Due to the miniaturization of crystal grains, the surface electronic structure and crystal structure change, resulting in surface effects, volume effects, quantum size effects and macroscopic tunnel effects that macroscopic objects do not have, as well as high transparency and high dispersion. In recent years, it has been found that it exhibits many special functions in catalysis, optics, magnetism, mechanics, etc., making it have important application value in many fields such as ceramics, chemical industry, electronics, optics, biology, medicine, etc. Specificity and use of comparisons. Compared with ordinary zinc oxide, nano-zinc oxide products have higher activity and have the functions of shielding infrared, ultraviol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02
Inventor 程继鹏张孝彬叶瑛
Owner ZHEJIANG UNIV
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