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Preparation method of ultra-thin two-way titanium-dioxide nanopore-array film with adjustable aperture and thickness

A technology of nanoporous film and nanopore array, applied in the field of nanomaterials

Active Publication Date: 2014-03-26
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

Although there are many methods to realize the preparation of double-pass nanotube films, there are still great difficulties in the preparation of ultra-thin double-pass titanium dioxide nanoporous films.

Method used

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  • Preparation method of ultra-thin two-way titanium-dioxide nanopore-array film with adjustable aperture and thickness
  • Preparation method of ultra-thin two-way titanium-dioxide nanopore-array film with adjustable aperture and thickness

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Embodiment Construction

[0026] 1. Pre-treatment of titanium sheet

[0027] The high-purity titanium sheet (purity of 99.6%, purchased from Baoji Tianmai Titanium Industry Co., Ltd.) was ultrasonically cleaned with acetone, absolute ethanol, and deionized water for 10 minutes, and then dried in the air at 50°C.

[0028] 2. Preparation of ultra-thin double-pass titanium dioxide nanoporous film

[0029] The preparation process is as figure 1 As shown, it is specifically divided into four steps: two pre-oxidation, film-forming oxidation, and high-pressure vias. Firstly, the treated titanium sheet was pre-oxidized in an aqueous glycol electrolyte (0.3 wt% NH4F, 2 vol% H2O) at a constant pressure of 60V and a constant temperature of 15°C for 2 hours to obtain a titanium dioxide nanotube layer. Treatment, remove the formed titanium dioxide layer. Through the above-mentioned pre-oxidation, the scratches on the surface of the titanium sheet can be smoothed, and regularly arranged pits are formed on the surface of...

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Abstract

The invention discloses a preparation method for a preparation method of ultra-thin two-way titanium-dioxide nanopore-array film with an adjustable aperture and thickness. The preparation method adopts an electrochemical anodic oxidation method with four steps to prepare the integral ultra-thin two-way titanium-dioxide nanopore-array film with a large area; then the oxidation time and the pore broadening time of hydrofluoric acid are adjusted so as to adjust the aperture and thickness of the film. According to invention, two-time oxidation is adopted so as to effectively avoid generation of bifurcate pores in the surfaces of the film and ensure that the pore channels of the prepared nanopore film are straight. The preparation method is simple and low in cost.

Description

technical field [0001] The invention relates to a preparation method of an ultra-thin double-pass titanium dioxide nano-hole array film with adjustable aperture and thickness, and belongs to the technical field of nanometer materials. Background technique [0002] The preparation methods of hole array films mainly include ion beam etching, photolithography, molecular beam epitaxy, polymer template method and so on. However, these methods either grow and prepare in a certain harsh environment, or require large and expensive equipment, and the cost is relatively high. It is a simple and cheap way to prepare ultra-thin double-pass titanium dioxide nanoporous array films by electrochemical anodization. [0003] Ultrathin double-pass TiO2 nanotube films have been extensively studied for their applications in front-illuminated solar cells and their high catalytic performance. Although there are many methods to realize the preparation of double-pass nanotube films, the prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26B82Y40/00B82Y30/00
Inventor 高旭东费广涛欧阳浩淼易海丽李阿蕾
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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