Nano micropore corundum film and preparation method thereof

A nano-microporous and corundum technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of poor stability of physical and chemical properties, complex preparation process, complex chemical composition, etc., and achieve crystallization Good chemical effect, simple process and low temperature requirement

Inactive Publication Date: 2012-08-01
FUZHOU UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In order to overcome the existing difficulties such as complex preparation process, complex chemical composition and poor stability of physical and chemical properties of the existing microporous film, the present invention provides a nano-microporous corundum film and a preparation method thereof, which can be prepared by a simple process with a single composition and form Microporous membrane with regular appearance and stable physical and chemical properties

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  • Nano micropore corundum film and preparation method thereof
  • Nano micropore corundum film and preparation method thereof
  • Nano micropore corundum film and preparation method thereof

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Embodiment Construction

[0018] In order to better understand the present invention, the content of the present invention will be further clarified in conjunction with specific examples below, but the content of the present invention is not limited to the following examples.

[0019] Such as figure 1 As shown, the thickness of the nanoporous corundum film in the embodiment of the present invention is about 70 microns, and the diameter of the nanopores is about 100 nm. The preparation process of the nano-microporous corundum film is described below:

[0020] 1. Preparation of porous anodized alumina template

[0021] 1. Pretreatment: high-purity 10cm 2 The aluminum sheet was annealed at 500° C. for 4 hours under nitrogen protection. The annealed aluminum sheet was ultrasonically cleaned with acetone and pure water respectively. Corrosion in 5% NaOH solution for 8 minutes to remove the oxide layer, followed by rinsing with water.

[0022] 2. Polishing: Electrochemical cross-flow polishing of alum...

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Abstract

The invention discloses a nano micropore corundum film and a preparation method thereof. The nano micropore aperture of the corundum film is 30 to 200 nanometers, the thickness of the corundum film is 5 to 100 microns, and the corundum film contains aluminum oxide serving as a main component. The nano micropore corundum film is prepared by the steps of preparing a porous anodic aluminum oxide template and thermally treating the porous anodic aluminum oxide template at a high temperature. The nano micropore corundum film is a film with a nano structure, can be widely applied in the fields of nano material extraction, preparation, synthesis and biotechnology, has single component, regular shape and stable performance, and is easy to prepare.

Description

technical field [0001] The invention relates to the field of preparation of micro-nano materials, in particular to a nano-microporous corundum film and a preparation method thereof. Background technique [0002] Due to its special material structure, corundum material usually has the characteristics of stable chemical properties, high temperature resistance, and high melting and boiling point. Corundum materials are widely used in many fields such as refractory materials, abrasives, flame retardants, fillers, and substrates for large-scale integrated circuits. Due to its special chemical and physical properties, corundum material has great application potential. The utilization and research of corundum materials at home and abroad are mostly in the aspect of bulk materials, but there are few researches on its micro-nano scale materials, especially in the aspect of nano-microporous corundum films, there is no research and application at present. Chinese patent CN02139252.8 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/04C25D11/18B82Y40/00B82Y30/00
Inventor 杨尊先郭太良李松徐胜张永爱庞海东
Owner FUZHOU UNIV
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