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Process of preparing nanometer hexagonal oxide sheet

A technology for hexagonal sheets and oxides, which is applied in the field of preparing oxide nano hexagonal sheets, can solve the problems of less research, lack of preparation methods and mechanisms, etc., and achieve the effect of simple preparation process

Inactive Publication Date: 2007-06-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the preparation of oxide one-dimensional nanostructures such as nanowires, nanorods and nanotubes is relatively mature, but there are few studies on the preparation and application of equally important oxide two-dimensional nanostructures, especially regular sheet nanostructures. , lack of general preparation method and mechanism

Method used

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  • Process of preparing nanometer hexagonal oxide sheet
  • Process of preparing nanometer hexagonal oxide sheet
  • Process of preparing nanometer hexagonal oxide sheet

Examples

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Effect test

Embodiment 1

[0017] Dissolve 6 mmol of ferric chloride in 40 ml of water, then add 0.6 mmol of citric acid, stir for 10 minutes, then add 30 ml of 2M sodium hydroxide, put the above prepared solution in an autoclave, and heat at 200 °C After treatment for 20 hours, the treated solution was centrifuged and dried to obtain nanometer hexagonal sheets of ferric oxide. Figure 1 and Figure 2 are scanning electron micrographs and transmission electron micrographs of ferric oxide nano-hexagonal sheets. It can be seen from the figure that the size of the nano-hexagonal sheet is 100 nanometers and the thickness is 20 nanometers.

Embodiment 2

[0019] 40 millimoles ferric chloride is dissolved in 40 milliliters of water, then add 40 millimoles of citric acid, after stirring for 10 minutes, add 2 milliliters of 2 moles / liter of potassium hydroxide again, put the above-mentioned prepared solution into the autoclave, Treat at 100° C. for 48 hours, centrifuge the treated solution, and dry to obtain nanometer hexagonal sheets of ferric oxide. The result was similar to Example 1.

Embodiment 3

[0021] Dissolve 2 millimoles of cobalt acetate in 80 milliliters of water, then add 0.2 millimoles of citric acid, stir for 10 minutes, then add 10 milliliters of 2 mol / liter sodium hydroxide, and put the above-mentioned prepared solution into an autoclave. Treat at 160° C. for 12 hours, centrifuge the treated solution, and dry to obtain nanometer hexagonal sheets of cobalt tetraoxide. Fig. 3 and Fig. 4 are scanning electron micrographs and transmission electron micrographs of nano-hexagonal sheets of cobalt trioxide.

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Abstract

The present invention discloses process of preparing nanometer hexagonal oxide flake. The process includes the following steps: dissolving metal chloride in deionized water, adding citric acid and alkali source into the solution, treating the solution in a high pressure kettle at 100-200 deg.c for 1-48 hr, centrifuging and drying. The process is simple, can obtain nanometer hexagonal oxide flake in special 2D nanometer structure, and lays foundation for the deep research and application in photoelectronic field.

Description

technical field [0001] The invention relates to a method for preparing oxide nanometer hexagonal sheets. Background technique [0002] Oxide is an important class of semiconductor materials, which are widely used in optoelectronic fields such as sensors, light-emitting diodes, and detectors. Recently, due to the development of nanotechnology, many properties different from bulk oxides have been discovered, such as the laser emission of arrayed ZnO. The discovery of these new physical phenomena prompts people to explore new, large-scale, effective, and low-cost methods for preparing nanomaterials. At present, the preparation of oxide one-dimensional nanostructures such as nanowires, nanorods and nanotubes is relatively mature, but there are few studies on the preparation and application of equally important oxide two-dimensional nanostructures, especially regular sheet nanostructures. , lack of general preparation method and mechanism. Contents of the invention [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/04C01G49/02C01B13/14B82B3/00
Inventor 杨德仁张辉邬剑波马向阳
Owner ZHEJIANG UNIV
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