Method for preparing sheet porous structural ZnO nano powder

A technology of porous structure and nanopowder, which is applied in the direction of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problem that the synthesis of nano-ZnO with two-dimensional porous structure has not been reported in the literature, and achieve low equipment requirements and uniform distribution of pores , the effect of stable performance

Inactive Publication Date: 2009-11-18
SHANDONG UNIV
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Problems solved by technology

[0006] So far, the synthesis of nano-ZnO with two-dimensional porous structure has not been reported in the literature

Method used

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  • Method for preparing sheet porous structural ZnO nano powder
  • Method for preparing sheet porous structural ZnO nano powder
  • Method for preparing sheet porous structural ZnO nano powder

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Dissolve the zinc acetate dihydrate raw material in water to prepare a 0.1M zinc acetate solution, take 25mL of the zinc acetate solution in a flask, and add 25mL of a 0.2M urea solution dropwise under magnetic stirring to obtain a mixed solution.

[0031] (2) Place the flask of the mixed solution obtained in step (1) in a microwave oven, react at a power of 650W for 45min, and the reaction temperature is 75°C to obtain a cloudy solution.

[0032] (3) The turbid liquid obtained in step (2) is filtered, washed, and dried to obtain a basic zinc carbonate precursor.

[0033] (4) The basic zinc carbonate precursor obtained in step (3) was placed in a muffle furnace at 450° C. for 2 h and calcined to obtain sheet-like porous ZnO nanopowder.

Embodiment 2

[0035] (1) Dissolve the zinc acetate dihydrate raw material in water to prepare a 0.3M zinc acetate solution, take 25mL of the zinc acetate solution in a flask, and add 25mL of a 0.4M urea solution dropwise under magnetic stirring to obtain a mixed solution.

[0036] (2) Place the flask of the mixed solution obtained in step (1) in a microwave oven, and react for 30 minutes at a power of 800W at a reaction temperature of 70° C. to obtain a cloudy solution.

[0037] (3) The turbid liquid obtained in step (2) is filtered, washed, and dried to obtain a basic zinc carbonate precursor.

[0038] (4) The basic zinc carbonate precursor in step (3) was placed in a muffle furnace at 500° C. for 2 h and calcined to obtain sheet-like porous ZnO nanopowder.

Embodiment 3

[0040] (1) Dissolve the zinc acetate dihydrate raw material in water to prepare a 0.5M zinc acetate solution, take 25mL of the zinc acetate solution in a flask, and add 30mL of a 0.6M urea solution dropwise under magnetic stirring to obtain a mixed solution.

[0041] (2) Place the flask of the mixed solution obtained in step (1) in a microwave oven, react for 30 minutes at a power of 850W, and the reaction temperature is 80° C. to obtain a cloudy solution.

[0042] (3) The turbid liquid obtained in step (2) is filtered, washed, and dried to obtain a basic zinc carbonate precursor.

[0043] (4) The basic zinc carbonate precursor in step (3) was placed in a muffle furnace at 550° C. for 2 h and calcined to obtain sheet-like porous ZnO nanopowder.

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Abstract

The invention relates to a preparation method of ZnO nanometer powder with a sheet-like porous structure. The mixed solution of zinc acetate solution and urea solution is placed in a microwave oven, and reacted for 30-60 minutes at a power of 500-900W, and the reaction temperature is 60-60 minutes. At 95°C, the resulting turbid solution was separated, washed and dried to obtain a basic zinc carbonate precursor. Calcining the basic zinc carbonate precursor at 400-600° C. for 1.5-3 hours to obtain porous ZnO nanometer powder. The nano ZnO product prepared by the method of the invention is a white powder, belongs to the hexagonal crystal system, has large specific surface area, high purity and good product quality.

Description

technical field [0001] The invention relates to a method for preparing inorganic nanometer materials, in particular to a method for preparing ZnO nanometer powder with sheet-like porous structure. Background technique [0002] Nano-zinc oxide (ZnO) is a typical wide bandgap semiconductor material with a large bandgap of 3.37eV and a large exciton binding energy of 60meV. It has a wide range of applications in the fields of piezoelectricity, optoelectronics, ferromagnetism, sensors and transparent electrodes. It has become one of the current research hotspots worldwide. Since these unique properties of nano-ZnO strongly depend on their morphology and size, the synthesis of nano-ZnO with different morphological structures has aroused great interest of researchers. According to literature reports, nanoparticles, nanorods, nanowires, nanotubes, nanoribbons and other morphology have been prepared by hydrothermal method, sol-gel method, template method, chemical precipitation met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02B82B3/00
Inventor 占金华景志红
Owner SHANDONG UNIV
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