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Method for manufacturing zinc oxide material with coralliform macropore - mesoporous structure

A technology of mesoporous structure and zinc oxide, applied in the direction of zinc oxide/zinc hydroxide, nanotechnology, etc., can solve the problems of cumbersome preparation process and long time, and achieve the effect of simple preparation process and short time

Inactive Publication Date: 2012-07-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the preparation process of these methods is all cumbersome and takes a long time.

Method used

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  • Method for manufacturing zinc oxide material with coralliform macropore - mesoporous structure
  • Method for manufacturing zinc oxide material with coralliform macropore - mesoporous structure
  • Method for manufacturing zinc oxide material with coralliform macropore - mesoporous structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1.250 g of Zn(NO 3 ) 2 ?6H 2 O, 1.250 g of Zn(CH 3 COO) 2 ?2H 2 O, 2.654 g of N 2 h 4 ?H 2 O and 0.250 g of C 2 h 5 NO 2 It was completely dissolved in 15 mL of distilled water to obtain a transparent solution, and then the crucible containing the above solution was placed in a muffle furnace and heated at 400 °C. The solution undergoes boiling, foaming, drying and self-propagating combustion to obtain coral-like macroporous-mesoporous structure ZnO materials.

[0016] figure 1 and figure 2 The low-magnification and high-magnification field emission scanning electron microscope photos of the obtained product are respectively, and it can be seen that the product has a structure similar to coral, and has a macropore-mesoporous multi-level pore structure. image 3 It is the X-ray diffraction pattern of the product, and it can be seen that the phase of the obtained product is ZnO through comparison with the standard card. Figure 4 It is a transmission electr...

Embodiment 2

[0018] 1.250 g of Zn(NO 3 ) 2 ?6H 2 O, 1.250 g of Zn(CH 3 COO) 2 ?2H 2 O, 5.308 g of N 2 h 4 ?H 2 O and 0.500 g of C 2 h 5 NO 2 Completely dissolved in 15 mL of distilled water to obtain a transparent solution, and then the crucible containing the above solution was placed in a muffle furnace and heated at 450 °C. The solution undergoes boiling, foaming, drying and self-propagating combustion to obtain a ZnO material with a coral-like macroporous-mesoporous structure.

[0019] Figure 5 The field emission scanning electron micrograph of the product shows that the product has a macropore-mesoporous structure.

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Abstract

The invention discloses a method for manufacturing a zinc oxide material with a coralliform macropore - mesoporous structure. The method provided by the invention comprises the following steps: using a mixture of hydrazine hydrate and glycine as fuel, using zinc nitrate as an oxidizing agent, dissolving the mixed fuel, the zinc nitrate and the zinc acetate in distilled water completely to obtain mixed solution, and performing auto-combustion on the mixed solution to obtain the zinc oxide material with the coralliform macropore - mesoporous structure. Compared with the prior art, the method provided by the invention needs no template or surface activator, and has very simple process, low energy consumption and short manufacturing period.

Description

technical field [0001] The invention relates to a preparation method of a coral-like macroporous-mesoporous structure zinc oxide material. Background technique [0002] ZnO is a direct bandgap semiconductor material (with a bandgap of 3.37 eV), which has important applications in the fields of gas sensing, luminescence, photocatalysis, and solar cells. Compared with dense materials, porous materials have a larger specific surface area, so they show excellent performance in many application fields. According to the pore size, porous materials can be divided into: microporous materials (< 2 nm), mesoporous materials (2-50 nm) and macroporous materials (> 50 nm). So far, most methods for preparing macroporous materials (or macroporous-mesoporous materials) require template assistance. Moreover, the preparation processes of these methods are relatively cumbersome and require a long time. Contents of the invention [0003] Aiming at the deficiencies in the prior art, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/03B82Y40/00
Inventor 文伟吴进明
Owner ZHEJIANG UNIV